qeth_core_main.c 151.7 KB
Newer Older
F
Frank Blaschka 已提交
1
/*
2
 *    Copyright IBM Corp. 2007, 2009
F
Frank Blaschka 已提交
3 4 5 6 7 8
 *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
 *		 Frank Pavlic <fpavlic@de.ibm.com>,
 *		 Thomas Spatzier <tspat@de.ibm.com>,
 *		 Frank Blaschka <frank.blaschka@de.ibm.com>
 */

9 10 11
#define KMSG_COMPONENT "qeth"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt

F
Frank Blaschka 已提交
12 13 14 15 16 17 18 19 20
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/mii.h>
#include <linux/kthread.h>
21
#include <linux/slab.h>
22
#include <net/iucv/af_iucv.h>
F
Frank Blaschka 已提交
23

24 25
#include <asm/ebcdic.h>
#include <asm/io.h>
26
#include <asm/sysinfo.h>
27
#include <asm/compat.h>
F
Frank Blaschka 已提交
28 29 30

#include "qeth_core.h"

31 32 33 34 35 36 37 38 39 40 41
struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
	/* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
	/*                   N  P  A    M  L  V                      H  */
	[QETH_DBF_SETUP] = {"qeth_setup",
				8, 1,   8, 5, &debug_hex_ascii_view, NULL},
	[QETH_DBF_MSG]   = {"qeth_msg",
				8, 1, 128, 3, &debug_sprintf_view,   NULL},
	[QETH_DBF_CTRL]  = {"qeth_control",
		8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
};
EXPORT_SYMBOL_GPL(qeth_dbf);
F
Frank Blaschka 已提交
42 43 44

struct qeth_card_list_struct qeth_core_card_list;
EXPORT_SYMBOL_GPL(qeth_core_card_list);
45 46
struct kmem_cache *qeth_core_header_cache;
EXPORT_SYMBOL_GPL(qeth_core_header_cache);
47
static struct kmem_cache *qeth_qdio_outbuf_cache;
F
Frank Blaschka 已提交
48 49

static struct device *qeth_core_root_dev;
50
static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
F
Frank Blaschka 已提交
51
static struct lock_class_key qdio_out_skb_queue_key;
52
static struct mutex qeth_mod_mutex;
F
Frank Blaschka 已提交
53 54 55 56 57 58 59 60

static void qeth_send_control_data_cb(struct qeth_channel *,
			struct qeth_cmd_buffer *);
static int qeth_issue_next_read(struct qeth_card *);
static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
static void qeth_free_buffer_pool(struct qeth_card *);
static int qeth_qdio_establish(struct qeth_card *);
61
static void qeth_free_qdio_buffers(struct qeth_card *);
62 63 64 65
static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
		struct qeth_qdio_out_buffer *buf,
		enum iucv_tx_notify notification);
static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
66 67 68
static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
		struct qeth_qdio_out_buffer *buf,
		enum qeth_qdio_buffer_states newbufstate);
69
static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
F
Frank Blaschka 已提交
70 71 72 73 74

static inline const char *qeth_get_cardname(struct qeth_card *card)
{
	if (card->info.guestlan) {
		switch (card->info.type) {
75
		case QETH_CARD_TYPE_OSD:
F
Frank Blaschka 已提交
76 77 78
			return " Guest LAN QDIO";
		case QETH_CARD_TYPE_IQD:
			return " Guest LAN Hiper";
79 80 81 82
		case QETH_CARD_TYPE_OSM:
			return " Guest LAN QDIO - OSM";
		case QETH_CARD_TYPE_OSX:
			return " Guest LAN QDIO - OSX";
F
Frank Blaschka 已提交
83 84 85 86 87
		default:
			return " unknown";
		}
	} else {
		switch (card->info.type) {
88
		case QETH_CARD_TYPE_OSD:
F
Frank Blaschka 已提交
89 90 91 92 93
			return " OSD Express";
		case QETH_CARD_TYPE_IQD:
			return " HiperSockets";
		case QETH_CARD_TYPE_OSN:
			return " OSN QDIO";
94 95 96 97
		case QETH_CARD_TYPE_OSM:
			return " OSM QDIO";
		case QETH_CARD_TYPE_OSX:
			return " OSX QDIO";
F
Frank Blaschka 已提交
98 99 100 101 102 103 104 105 106 107 108 109
		default:
			return " unknown";
		}
	}
	return " n/a";
}

/* max length to be returned: 14 */
const char *qeth_get_cardname_short(struct qeth_card *card)
{
	if (card->info.guestlan) {
		switch (card->info.type) {
110
		case QETH_CARD_TYPE_OSD:
F
Frank Blaschka 已提交
111 112 113
			return "GuestLAN QDIO";
		case QETH_CARD_TYPE_IQD:
			return "GuestLAN Hiper";
114 115 116 117
		case QETH_CARD_TYPE_OSM:
			return "GuestLAN OSM";
		case QETH_CARD_TYPE_OSX:
			return "GuestLAN OSX";
F
Frank Blaschka 已提交
118 119 120 121 122
		default:
			return "unknown";
		}
	} else {
		switch (card->info.type) {
123
		case QETH_CARD_TYPE_OSD:
F
Frank Blaschka 已提交
124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147
			switch (card->info.link_type) {
			case QETH_LINK_TYPE_FAST_ETH:
				return "OSD_100";
			case QETH_LINK_TYPE_HSTR:
				return "HSTR";
			case QETH_LINK_TYPE_GBIT_ETH:
				return "OSD_1000";
			case QETH_LINK_TYPE_10GBIT_ETH:
				return "OSD_10GIG";
			case QETH_LINK_TYPE_LANE_ETH100:
				return "OSD_FE_LANE";
			case QETH_LINK_TYPE_LANE_TR:
				return "OSD_TR_LANE";
			case QETH_LINK_TYPE_LANE_ETH1000:
				return "OSD_GbE_LANE";
			case QETH_LINK_TYPE_LANE:
				return "OSD_ATM_LANE";
			default:
				return "OSD_Express";
			}
		case QETH_CARD_TYPE_IQD:
			return "HiperSockets";
		case QETH_CARD_TYPE_OSN:
			return "OSN";
148 149 150 151
		case QETH_CARD_TYPE_OSM:
			return "OSM_1000";
		case QETH_CARD_TYPE_OSX:
			return "OSX_10GIG";
F
Frank Blaschka 已提交
152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195
		default:
			return "unknown";
		}
	}
	return "n/a";
}

void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
			 int clear_start_mask)
{
	unsigned long flags;

	spin_lock_irqsave(&card->thread_mask_lock, flags);
	card->thread_allowed_mask = threads;
	if (clear_start_mask)
		card->thread_start_mask &= threads;
	spin_unlock_irqrestore(&card->thread_mask_lock, flags);
	wake_up(&card->wait_q);
}
EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);

int qeth_threads_running(struct qeth_card *card, unsigned long threads)
{
	unsigned long flags;
	int rc = 0;

	spin_lock_irqsave(&card->thread_mask_lock, flags);
	rc = (card->thread_running_mask & threads);
	spin_unlock_irqrestore(&card->thread_mask_lock, flags);
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_threads_running);

int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
{
	return wait_event_interruptible(card->wait_q,
			qeth_threads_running(card, threads) == 0);
}
EXPORT_SYMBOL_GPL(qeth_wait_for_threads);

void qeth_clear_working_pool_list(struct qeth_card *card)
{
	struct qeth_buffer_pool_entry *pool_entry, *tmp;

C
Carsten Otte 已提交
196
	QETH_CARD_TEXT(card, 5, "clwrklst");
F
Frank Blaschka 已提交
197 198 199 200 201 202 203 204 205 206 207 208 209
	list_for_each_entry_safe(pool_entry, tmp,
			    &card->qdio.in_buf_pool.entry_list, list){
			list_del(&pool_entry->list);
	}
}
EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);

static int qeth_alloc_buffer_pool(struct qeth_card *card)
{
	struct qeth_buffer_pool_entry *pool_entry;
	void *ptr;
	int i, j;

C
Carsten Otte 已提交
210
	QETH_CARD_TEXT(card, 5, "alocpool");
F
Frank Blaschka 已提交
211
	for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
212
		pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
F
Frank Blaschka 已提交
213 214 215 216 217
		if (!pool_entry) {
			qeth_free_buffer_pool(card);
			return -ENOMEM;
		}
		for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
218
			ptr = (void *) __get_free_page(GFP_KERNEL);
F
Frank Blaschka 已提交
219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236
			if (!ptr) {
				while (j > 0)
					free_page((unsigned long)
						  pool_entry->elements[--j]);
				kfree(pool_entry);
				qeth_free_buffer_pool(card);
				return -ENOMEM;
			}
			pool_entry->elements[j] = ptr;
		}
		list_add(&pool_entry->init_list,
			 &card->qdio.init_pool.entry_list);
	}
	return 0;
}

int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
{
C
Carsten Otte 已提交
237
	QETH_CARD_TEXT(card, 2, "realcbp");
F
Frank Blaschka 已提交
238 239 240 241 242 243 244 245 246 247 248 249

	if ((card->state != CARD_STATE_DOWN) &&
	    (card->state != CARD_STATE_RECOVER))
		return -EPERM;

	/* TODO: steel/add buffers from/to a running card's buffer pool (?) */
	qeth_clear_working_pool_list(card);
	qeth_free_buffer_pool(card);
	card->qdio.in_buf_pool.buf_count = bufcnt;
	card->qdio.init_pool.buf_count = bufcnt;
	return qeth_alloc_buffer_pool(card);
}
250
EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
F
Frank Blaschka 已提交
251

252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338
static inline int qeth_cq_init(struct qeth_card *card)
{
	int rc;

	if (card->options.cq == QETH_CQ_ENABLED) {
		QETH_DBF_TEXT(SETUP, 2, "cqinit");
		memset(card->qdio.c_q->qdio_bufs, 0,
		       QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
		card->qdio.c_q->next_buf_to_init = 127;
		rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
			     card->qdio.no_in_queues - 1, 0,
			     127);
		if (rc) {
			QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
			goto out;
		}
	}
	rc = 0;
out:
	return rc;
}

static inline int qeth_alloc_cq(struct qeth_card *card)
{
	int rc;

	if (card->options.cq == QETH_CQ_ENABLED) {
		int i;
		struct qdio_outbuf_state *outbuf_states;

		QETH_DBF_TEXT(SETUP, 2, "cqon");
		card->qdio.c_q = kzalloc(sizeof(struct qeth_qdio_q),
					 GFP_KERNEL);
		if (!card->qdio.c_q) {
			rc = -1;
			goto kmsg_out;
		}
		QETH_DBF_HEX(SETUP, 2, &card->qdio.c_q, sizeof(void *));

		for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
			card->qdio.c_q->bufs[i].buffer =
				&card->qdio.c_q->qdio_bufs[i];
		}

		card->qdio.no_in_queues = 2;

		card->qdio.out_bufstates = (struct qdio_outbuf_state *)
			kzalloc(card->qdio.no_out_queues *
				QDIO_MAX_BUFFERS_PER_Q *
				sizeof(struct qdio_outbuf_state), GFP_KERNEL);
		outbuf_states = card->qdio.out_bufstates;
		if (outbuf_states == NULL) {
			rc = -1;
			goto free_cq_out;
		}
		for (i = 0; i < card->qdio.no_out_queues; ++i) {
			card->qdio.out_qs[i]->bufstates = outbuf_states;
			outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
		}
	} else {
		QETH_DBF_TEXT(SETUP, 2, "nocq");
		card->qdio.c_q = NULL;
		card->qdio.no_in_queues = 1;
	}
	QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
	rc = 0;
out:
	return rc;
free_cq_out:
	kfree(card->qdio.c_q);
	card->qdio.c_q = NULL;
kmsg_out:
	dev_err(&card->gdev->dev, "Failed to create completion queue\n");
	goto out;
}

static inline void qeth_free_cq(struct qeth_card *card)
{
	if (card->qdio.c_q) {
		--card->qdio.no_in_queues;
		kfree(card->qdio.c_q);
		card->qdio.c_q = NULL;
	}
	kfree(card->qdio.out_bufstates);
	card->qdio.out_bufstates = NULL;
}

339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362
static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
	int delayed) {
	enum iucv_tx_notify n;

	switch (sbalf15) {
	case 0:
		n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
		break;
	case 4:
	case 16:
	case 17:
	case 18:
		n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
			TX_NOTIFY_UNREACHABLE;
		break;
	default:
		n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
			TX_NOTIFY_GENERALERROR;
		break;
	}

	return n;
}

363 364 365
static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
	int bidx, int forced_cleanup)
{
366 367 368
	if (q->card->options.cq != QETH_CQ_ENABLED)
		return;

369 370 371 372 373 374 375 376 377 378 379
	if (q->bufs[bidx]->next_pending != NULL) {
		struct qeth_qdio_out_buffer *head = q->bufs[bidx];
		struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;

		while (c) {
			if (forced_cleanup ||
			    atomic_read(&c->state) ==
			      QETH_QDIO_BUF_HANDLED_DELAYED) {
				struct qeth_qdio_out_buffer *f = c;
				QETH_CARD_TEXT(f->q->card, 5, "fp");
				QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
380 381 382 383 384
				/* release here to avoid interleaving between
				   outbound tasklet and inbound tasklet
				   regarding notifications and lifecycle */
				qeth_release_skbs(c);

385 386 387 388 389 390 391 392 393 394 395
				c = f->next_pending;
				BUG_ON(head->next_pending != f);
				head->next_pending = c;
				kmem_cache_free(qeth_qdio_outbuf_cache, f);
			} else {
				head = c;
				c = c->next_pending;
			}

		}
	}
396 397 398 399 400 401 402
	if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
					QETH_QDIO_BUF_HANDLED_DELAYED)) {
		/* for recovery situations */
		q->bufs[bidx]->aob = q->bufstates[bidx].aob;
		qeth_init_qdio_out_buf(q, bidx);
		QETH_CARD_TEXT(q->card, 2, "clprecov");
	}
403 404 405 406 407 408 409
}


static inline void qeth_qdio_handle_aob(struct qeth_card *card,
		unsigned long phys_aob_addr) {
	struct qaob *aob;
	struct qeth_qdio_out_buffer *buffer;
410
	enum iucv_tx_notify notification;
411 412 413 414 415 416 417 418 419

	aob = (struct qaob *) phys_to_virt(phys_aob_addr);
	QETH_CARD_TEXT(card, 5, "haob");
	QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
	buffer = (struct qeth_qdio_out_buffer *) aob->user1;
	QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);

	BUG_ON(buffer == NULL);

420 421 422 423 424 425 426 427 428 429 430 431 432 433 434
	if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
			   QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
		notification = TX_NOTIFY_OK;
	} else {
		BUG_ON(atomic_read(&buffer->state) != QETH_QDIO_BUF_PENDING);
		atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
		notification = TX_NOTIFY_DELAYED_OK;
	}

	if (aob->aorc != 0)  {
		QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
		notification = qeth_compute_cq_notification(aob->aorc, 1);
	}
	qeth_notify_skbs(buffer->q, buffer, notification);

435 436
	buffer->aob = NULL;
	qeth_clear_output_buffer(buffer->q, buffer,
437 438
				 QETH_QDIO_BUF_HANDLED_DELAYED);

439 440 441 442 443 444 445 446 447 448 449 450 451
	/* from here on: do not touch buffer anymore */
	qdio_release_aob(aob);
}

static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
{
	return card->options.cq == QETH_CQ_ENABLED &&
	    card->qdio.c_q != NULL &&
	    queue != 0 &&
	    queue == card->qdio.no_in_queues - 1;
}


F
Frank Blaschka 已提交
452 453 454 455 456
static int qeth_issue_next_read(struct qeth_card *card)
{
	int rc;
	struct qeth_cmd_buffer *iob;

C
Carsten Otte 已提交
457
	QETH_CARD_TEXT(card, 5, "issnxrd");
F
Frank Blaschka 已提交
458 459 460 461
	if (card->read.state != CH_STATE_UP)
		return -EIO;
	iob = qeth_get_buffer(&card->read);
	if (!iob) {
462 463 464 465
		dev_warn(&card->gdev->dev, "The qeth device driver "
			"failed to recover an error on the device\n");
		QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
			"available\n", dev_name(&card->gdev->dev));
F
Frank Blaschka 已提交
466 467 468
		return -ENOMEM;
	}
	qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
C
Carsten Otte 已提交
469
	QETH_CARD_TEXT(card, 6, "noirqpnd");
F
Frank Blaschka 已提交
470 471 472
	rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
			      (addr_t) iob, 0, 0);
	if (rc) {
473 474
		QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
			"rc=%i\n", dev_name(&card->gdev->dev), rc);
F
Frank Blaschka 已提交
475
		atomic_set(&card->read.irq_pending, 0);
476
		card->read_or_write_problem = 1;
F
Frank Blaschka 已提交
477 478 479 480 481 482 483 484 485 486 487 488 489 490 491
		qeth_schedule_recovery(card);
		wake_up(&card->wait_q);
	}
	return rc;
}

static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
{
	struct qeth_reply *reply;

	reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
	if (reply) {
		atomic_set(&reply->refcnt, 1);
		atomic_set(&reply->received, 0);
		reply->card = card;
492
	}
F
Frank Blaschka 已提交
493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508
	return reply;
}

static void qeth_get_reply(struct qeth_reply *reply)
{
	WARN_ON(atomic_read(&reply->refcnt) <= 0);
	atomic_inc(&reply->refcnt);
}

static void qeth_put_reply(struct qeth_reply *reply)
{
	WARN_ON(atomic_read(&reply->refcnt) <= 0);
	if (atomic_dec_and_test(&reply->refcnt))
		kfree(reply);
}

509
static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
F
Frank Blaschka 已提交
510 511 512
		struct qeth_card *card)
{
	char *ipa_name;
513
	int com = cmd->hdr.command;
F
Frank Blaschka 已提交
514
	ipa_name = qeth_get_ipa_cmd_name(com);
515
	if (rc)
516 517 518 519 520
		QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
				"x%X \"%s\"\n",
				ipa_name, com, dev_name(&card->gdev->dev),
				QETH_CARD_IFNAME(card), rc,
				qeth_get_ipa_msg(rc));
521
	else
522 523 524
		QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
				ipa_name, com, dev_name(&card->gdev->dev),
				QETH_CARD_IFNAME(card));
F
Frank Blaschka 已提交
525 526 527 528 529 530 531
}

static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
		struct qeth_cmd_buffer *iob)
{
	struct qeth_ipa_cmd *cmd = NULL;

C
Carsten Otte 已提交
532
	QETH_CARD_TEXT(card, 5, "chkipad");
F
Frank Blaschka 已提交
533 534 535
	if (IS_IPA(iob->data)) {
		cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
		if (IS_IPA_REPLY(cmd)) {
536 537 538 539
			if (cmd->hdr.command != IPA_CMD_SETCCID &&
			    cmd->hdr.command != IPA_CMD_DELCCID &&
			    cmd->hdr.command != IPA_CMD_MODCCID &&
			    cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
540 541
				qeth_issue_ipa_msg(cmd,
						cmd->hdr.return_code, card);
F
Frank Blaschka 已提交
542 543 544 545
			return cmd;
		} else {
			switch (cmd->hdr.command) {
			case IPA_CMD_STOPLAN:
546 547 548
				dev_warn(&card->gdev->dev,
					   "The link for interface %s on CHPID"
					   " 0x%X failed\n",
F
Frank Blaschka 已提交
549 550 551 552 553 554 555
					   QETH_CARD_IFNAME(card),
					   card->info.chpid);
				card->lan_online = 0;
				if (card->dev && netif_carrier_ok(card->dev))
					netif_carrier_off(card->dev);
				return NULL;
			case IPA_CMD_STARTLAN:
556 557 558
				dev_info(&card->gdev->dev,
					   "The link for %s on CHPID 0x%X has"
					   " been restored\n",
F
Frank Blaschka 已提交
559 560 561
					   QETH_CARD_IFNAME(card),
					   card->info.chpid);
				netif_carrier_on(card->dev);
562
				card->lan_online = 1;
563 564
				if (card->info.hwtrap)
					card->info.hwtrap = 2;
F
Frank Blaschka 已提交
565 566 567 568 569
				qeth_schedule_recovery(card);
				return NULL;
			case IPA_CMD_MODCCID:
				return cmd;
			case IPA_CMD_REGISTER_LOCAL_ADDR:
C
Carsten Otte 已提交
570
				QETH_CARD_TEXT(card, 3, "irla");
F
Frank Blaschka 已提交
571 572
				break;
			case IPA_CMD_UNREGISTER_LOCAL_ADDR:
C
Carsten Otte 已提交
573
				QETH_CARD_TEXT(card, 3, "urla");
F
Frank Blaschka 已提交
574 575
				break;
			default:
576
				QETH_DBF_MESSAGE(2, "Received data is IPA "
F
Frank Blaschka 已提交
577 578 579 580 581 582 583 584 585 586 587 588 589
					   "but not a reply!\n");
				break;
			}
		}
	}
	return cmd;
}

void qeth_clear_ipacmd_list(struct qeth_card *card)
{
	struct qeth_reply *reply, *r;
	unsigned long flags;

C
Carsten Otte 已提交
590
	QETH_CARD_TEXT(card, 4, "clipalst");
F
Frank Blaschka 已提交
591 592 593 594 595 596 597 598 599 600 601

	spin_lock_irqsave(&card->lock, flags);
	list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
		qeth_get_reply(reply);
		reply->rc = -EIO;
		atomic_inc(&reply->received);
		list_del_init(&reply->list);
		wake_up(&reply->wait_q);
		qeth_put_reply(reply);
	}
	spin_unlock_irqrestore(&card->lock, flags);
602
	atomic_set(&card->write.irq_pending, 0);
F
Frank Blaschka 已提交
603 604 605
}
EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);

606 607
static int qeth_check_idx_response(struct qeth_card *card,
	unsigned char *buffer)
F
Frank Blaschka 已提交
608 609 610 611
{
	if (!buffer)
		return 0;

612
	QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
F
Frank Blaschka 已提交
613
	if ((buffer[2] & 0xc0) == 0xc0) {
614
		QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
F
Frank Blaschka 已提交
615 616 617 618
			   "with cause code 0x%02x%s\n",
			   buffer[4],
			   ((buffer[4] == 0x22) ?
			    " -- try another portname" : ""));
C
Carsten Otte 已提交
619 620 621
		QETH_CARD_TEXT(card, 2, "ckidxres");
		QETH_CARD_TEXT(card, 2, " idxterm");
		QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
622 623 624 625 626 627
		if (buffer[4] == 0xf6) {
			dev_err(&card->gdev->dev,
			"The qeth device is not configured "
			"for the OSI layer required by z/VM\n");
			return -EPERM;
		}
F
Frank Blaschka 已提交
628 629 630 631 632 633 634 635 636 637 638
		return -EIO;
	}
	return 0;
}

static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
		__u32 len)
{
	struct qeth_card *card;

	card = CARD_FROM_CDEV(channel->ccwdev);
C
Carsten Otte 已提交
639
	QETH_CARD_TEXT(card, 4, "setupccw");
F
Frank Blaschka 已提交
640 641 642 643 644 645 646 647 648 649 650 651
	if (channel == &card->read)
		memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
	else
		memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
	channel->ccw.count = len;
	channel->ccw.cda = (__u32) __pa(iob);
}

static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
{
	__u8 index;

C
Carsten Otte 已提交
652
	QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
F
Frank Blaschka 已提交
653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672
	index = channel->io_buf_no;
	do {
		if (channel->iob[index].state == BUF_STATE_FREE) {
			channel->iob[index].state = BUF_STATE_LOCKED;
			channel->io_buf_no = (channel->io_buf_no + 1) %
				QETH_CMD_BUFFER_NO;
			memset(channel->iob[index].data, 0, QETH_BUFSIZE);
			return channel->iob + index;
		}
		index = (index + 1) % QETH_CMD_BUFFER_NO;
	} while (index != channel->io_buf_no);

	return NULL;
}

void qeth_release_buffer(struct qeth_channel *channel,
		struct qeth_cmd_buffer *iob)
{
	unsigned long flags;

C
Carsten Otte 已提交
673
	QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
F
Frank Blaschka 已提交
674 675 676 677 678 679
	spin_lock_irqsave(&channel->iob_lock, flags);
	memset(iob->data, 0, QETH_BUFSIZE);
	iob->state = BUF_STATE_FREE;
	iob->callback = qeth_send_control_data_cb;
	iob->rc = 0;
	spin_unlock_irqrestore(&channel->iob_lock, flags);
680
	wake_up(&channel->wait_q);
F
Frank Blaschka 已提交
681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722
}
EXPORT_SYMBOL_GPL(qeth_release_buffer);

static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
{
	struct qeth_cmd_buffer *buffer = NULL;
	unsigned long flags;

	spin_lock_irqsave(&channel->iob_lock, flags);
	buffer = __qeth_get_buffer(channel);
	spin_unlock_irqrestore(&channel->iob_lock, flags);
	return buffer;
}

struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
{
	struct qeth_cmd_buffer *buffer;
	wait_event(channel->wait_q,
		   ((buffer = qeth_get_buffer(channel)) != NULL));
	return buffer;
}
EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);

void qeth_clear_cmd_buffers(struct qeth_channel *channel)
{
	int cnt;

	for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
		qeth_release_buffer(channel, &channel->iob[cnt]);
	channel->buf_no = 0;
	channel->io_buf_no = 0;
}
EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);

static void qeth_send_control_data_cb(struct qeth_channel *channel,
		  struct qeth_cmd_buffer *iob)
{
	struct qeth_card *card;
	struct qeth_reply *reply, *r;
	struct qeth_ipa_cmd *cmd;
	unsigned long flags;
	int keep_reply;
723
	int rc = 0;
F
Frank Blaschka 已提交
724 725

	card = CARD_FROM_CDEV(channel->ccwdev);
C
Carsten Otte 已提交
726
	QETH_CARD_TEXT(card, 4, "sndctlcb");
727 728 729 730 731
	rc = qeth_check_idx_response(card, iob->data);
	switch (rc) {
	case 0:
		break;
	case -EIO:
F
Frank Blaschka 已提交
732
		qeth_clear_ipacmd_list(card);
733
		qeth_schedule_recovery(card);
734
		/* fall through */
735
	default:
F
Frank Blaschka 已提交
736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799
		goto out;
	}

	cmd = qeth_check_ipa_data(card, iob);
	if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
		goto out;
	/*in case of OSN : check if cmd is set */
	if (card->info.type == QETH_CARD_TYPE_OSN &&
	    cmd &&
	    cmd->hdr.command != IPA_CMD_STARTLAN &&
	    card->osn_info.assist_cb != NULL) {
		card->osn_info.assist_cb(card->dev, cmd);
		goto out;
	}

	spin_lock_irqsave(&card->lock, flags);
	list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
		if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
		    ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
			qeth_get_reply(reply);
			list_del_init(&reply->list);
			spin_unlock_irqrestore(&card->lock, flags);
			keep_reply = 0;
			if (reply->callback != NULL) {
				if (cmd) {
					reply->offset = (__u16)((char *)cmd -
							(char *)iob->data);
					keep_reply = reply->callback(card,
							reply,
							(unsigned long)cmd);
				} else
					keep_reply = reply->callback(card,
							reply,
							(unsigned long)iob);
			}
			if (cmd)
				reply->rc = (u16) cmd->hdr.return_code;
			else if (iob->rc)
				reply->rc = iob->rc;
			if (keep_reply) {
				spin_lock_irqsave(&card->lock, flags);
				list_add_tail(&reply->list,
					      &card->cmd_waiter_list);
				spin_unlock_irqrestore(&card->lock, flags);
			} else {
				atomic_inc(&reply->received);
				wake_up(&reply->wait_q);
			}
			qeth_put_reply(reply);
			goto out;
		}
	}
	spin_unlock_irqrestore(&card->lock, flags);
out:
	memcpy(&card->seqno.pdu_hdr_ack,
		QETH_PDU_HEADER_SEQ_NO(iob->data),
		QETH_SEQ_NO_LENGTH);
	qeth_release_buffer(channel, iob);
}

static int qeth_setup_channel(struct qeth_channel *channel)
{
	int cnt;

800
	QETH_DBF_TEXT(SETUP, 2, "setupch");
F
Frank Blaschka 已提交
801
	for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
802
		channel->iob[cnt].data =
803
			kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
F
Frank Blaschka 已提交
804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893
		if (channel->iob[cnt].data == NULL)
			break;
		channel->iob[cnt].state = BUF_STATE_FREE;
		channel->iob[cnt].channel = channel;
		channel->iob[cnt].callback = qeth_send_control_data_cb;
		channel->iob[cnt].rc = 0;
	}
	if (cnt < QETH_CMD_BUFFER_NO) {
		while (cnt-- > 0)
			kfree(channel->iob[cnt].data);
		return -ENOMEM;
	}
	channel->buf_no = 0;
	channel->io_buf_no = 0;
	atomic_set(&channel->irq_pending, 0);
	spin_lock_init(&channel->iob_lock);

	init_waitqueue_head(&channel->wait_q);
	return 0;
}

static int qeth_set_thread_start_bit(struct qeth_card *card,
		unsigned long thread)
{
	unsigned long flags;

	spin_lock_irqsave(&card->thread_mask_lock, flags);
	if (!(card->thread_allowed_mask & thread) ||
	      (card->thread_start_mask & thread)) {
		spin_unlock_irqrestore(&card->thread_mask_lock, flags);
		return -EPERM;
	}
	card->thread_start_mask |= thread;
	spin_unlock_irqrestore(&card->thread_mask_lock, flags);
	return 0;
}

void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
{
	unsigned long flags;

	spin_lock_irqsave(&card->thread_mask_lock, flags);
	card->thread_start_mask &= ~thread;
	spin_unlock_irqrestore(&card->thread_mask_lock, flags);
	wake_up(&card->wait_q);
}
EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);

void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
{
	unsigned long flags;

	spin_lock_irqsave(&card->thread_mask_lock, flags);
	card->thread_running_mask &= ~thread;
	spin_unlock_irqrestore(&card->thread_mask_lock, flags);
	wake_up(&card->wait_q);
}
EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);

static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
{
	unsigned long flags;
	int rc = 0;

	spin_lock_irqsave(&card->thread_mask_lock, flags);
	if (card->thread_start_mask & thread) {
		if ((card->thread_allowed_mask & thread) &&
		    !(card->thread_running_mask & thread)) {
			rc = 1;
			card->thread_start_mask &= ~thread;
			card->thread_running_mask |= thread;
		} else
			rc = -EPERM;
	}
	spin_unlock_irqrestore(&card->thread_mask_lock, flags);
	return rc;
}

int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
{
	int rc = 0;

	wait_event(card->wait_q,
		   (rc = __qeth_do_run_thread(card, thread)) >= 0);
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_do_run_thread);

void qeth_schedule_recovery(struct qeth_card *card)
{
C
Carsten Otte 已提交
894
	QETH_CARD_TEXT(card, 2, "startrec");
F
Frank Blaschka 已提交
895 896 897 898 899 900 901 902 903
	if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
		schedule_work(&card->kernel_thread_starter);
}
EXPORT_SYMBOL_GPL(qeth_schedule_recovery);

static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
{
	int dstat, cstat;
	char *sense;
C
Carsten Otte 已提交
904
	struct qeth_card *card;
F
Frank Blaschka 已提交
905 906

	sense = (char *) irb->ecw;
907 908
	cstat = irb->scsw.cmd.cstat;
	dstat = irb->scsw.cmd.dstat;
C
Carsten Otte 已提交
909
	card = CARD_FROM_CDEV(cdev);
F
Frank Blaschka 已提交
910 911 912 913

	if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
		     SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
		     SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
C
Carsten Otte 已提交
914
		QETH_CARD_TEXT(card, 2, "CGENCHK");
915 916
		dev_warn(&cdev->dev, "The qeth device driver "
			"failed to recover an error on the device\n");
917
		QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
918
			dev_name(&cdev->dev), dstat, cstat);
F
Frank Blaschka 已提交
919 920 921 922 923 924 925 926
		print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
				16, 1, irb, 64, 1);
		return 1;
	}

	if (dstat & DEV_STAT_UNIT_CHECK) {
		if (sense[SENSE_RESETTING_EVENT_BYTE] &
		    SENSE_RESETTING_EVENT_FLAG) {
C
Carsten Otte 已提交
927
			QETH_CARD_TEXT(card, 2, "REVIND");
F
Frank Blaschka 已提交
928 929 930 931
			return 1;
		}
		if (sense[SENSE_COMMAND_REJECT_BYTE] &
		    SENSE_COMMAND_REJECT_FLAG) {
C
Carsten Otte 已提交
932
			QETH_CARD_TEXT(card, 2, "CMDREJi");
933
			return 1;
F
Frank Blaschka 已提交
934 935
		}
		if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
C
Carsten Otte 已提交
936
			QETH_CARD_TEXT(card, 2, "AFFE");
F
Frank Blaschka 已提交
937 938 939
			return 1;
		}
		if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
C
Carsten Otte 已提交
940
			QETH_CARD_TEXT(card, 2, "ZEROSEN");
F
Frank Blaschka 已提交
941 942
			return 0;
		}
C
Carsten Otte 已提交
943
		QETH_CARD_TEXT(card, 2, "DGENCHK");
F
Frank Blaschka 已提交
944 945 946 947 948 949 950 951
			return 1;
	}
	return 0;
}

static long __qeth_check_irb_error(struct ccw_device *cdev,
		unsigned long intparm, struct irb *irb)
{
C
Carsten Otte 已提交
952 953 954 955
	struct qeth_card *card;

	card = CARD_FROM_CDEV(cdev);

F
Frank Blaschka 已提交
956 957 958 959 960
	if (!IS_ERR(irb))
		return 0;

	switch (PTR_ERR(irb)) {
	case -EIO:
961 962
		QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
			dev_name(&cdev->dev));
C
Carsten Otte 已提交
963 964
		QETH_CARD_TEXT(card, 2, "ckirberr");
		QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
F
Frank Blaschka 已提交
965 966
		break;
	case -ETIMEDOUT:
967 968
		dev_warn(&cdev->dev, "A hardware operation timed out"
			" on the device\n");
C
Carsten Otte 已提交
969 970
		QETH_CARD_TEXT(card, 2, "ckirberr");
		QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
F
Frank Blaschka 已提交
971 972 973 974 975 976 977 978
		if (intparm == QETH_RCD_PARM) {
			if (card && (card->data.ccwdev == cdev)) {
				card->data.state = CH_STATE_DOWN;
				wake_up(&card->wait_q);
			}
		}
		break;
	default:
979 980
		QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
			dev_name(&cdev->dev), PTR_ERR(irb));
C
Carsten Otte 已提交
981 982
		QETH_CARD_TEXT(card, 2, "ckirberr");
		QETH_CARD_TEXT(card, 2, "  rc???");
F
Frank Blaschka 已提交
983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999
	}
	return PTR_ERR(irb);
}

static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
		struct irb *irb)
{
	int rc;
	int cstat, dstat;
	struct qeth_cmd_buffer *buffer;
	struct qeth_channel *channel;
	struct qeth_card *card;
	struct qeth_cmd_buffer *iob;
	__u8 index;

	if (__qeth_check_irb_error(cdev, intparm, irb))
		return;
1000 1001
	cstat = irb->scsw.cmd.cstat;
	dstat = irb->scsw.cmd.dstat;
F
Frank Blaschka 已提交
1002 1003 1004 1005 1006

	card = CARD_FROM_CDEV(cdev);
	if (!card)
		return;

C
Carsten Otte 已提交
1007 1008
	QETH_CARD_TEXT(card, 5, "irq");

F
Frank Blaschka 已提交
1009 1010
	if (card->read.ccwdev == cdev) {
		channel = &card->read;
C
Carsten Otte 已提交
1011
		QETH_CARD_TEXT(card, 5, "read");
F
Frank Blaschka 已提交
1012 1013
	} else if (card->write.ccwdev == cdev) {
		channel = &card->write;
C
Carsten Otte 已提交
1014
		QETH_CARD_TEXT(card, 5, "write");
F
Frank Blaschka 已提交
1015 1016
	} else {
		channel = &card->data;
C
Carsten Otte 已提交
1017
		QETH_CARD_TEXT(card, 5, "data");
F
Frank Blaschka 已提交
1018 1019 1020
	}
	atomic_set(&channel->irq_pending, 0);

1021
	if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
F
Frank Blaschka 已提交
1022 1023
		channel->state = CH_STATE_STOPPED;

1024
	if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
F
Frank Blaschka 已提交
1025 1026 1027 1028 1029 1030 1031 1032
		channel->state = CH_STATE_HALTED;

	/*let's wake up immediately on data channel*/
	if ((channel == &card->data) && (intparm != 0) &&
	    (intparm != QETH_RCD_PARM))
		goto out;

	if (intparm == QETH_CLEAR_CHANNEL_PARM) {
C
Carsten Otte 已提交
1033
		QETH_CARD_TEXT(card, 6, "clrchpar");
F
Frank Blaschka 已提交
1034 1035 1036 1037
		/* we don't have to handle this further */
		intparm = 0;
	}
	if (intparm == QETH_HALT_CHANNEL_PARM) {
C
Carsten Otte 已提交
1038
		QETH_CARD_TEXT(card, 6, "hltchpar");
F
Frank Blaschka 已提交
1039 1040 1041 1042 1043 1044 1045
		/* we don't have to handle this further */
		intparm = 0;
	}
	if ((dstat & DEV_STAT_UNIT_EXCEP) ||
	    (dstat & DEV_STAT_UNIT_CHECK) ||
	    (cstat)) {
		if (irb->esw.esw0.erw.cons) {
1046 1047 1048 1049 1050 1051
			dev_warn(&channel->ccwdev->dev,
				"The qeth device driver failed to recover "
				"an error on the device\n");
			QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
				"0x%X dstat 0x%X\n",
				dev_name(&channel->ccwdev->dev), cstat, dstat);
F
Frank Blaschka 已提交
1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062
			print_hex_dump(KERN_WARNING, "qeth: irb ",
				DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
			print_hex_dump(KERN_WARNING, "qeth: sense data ",
				DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
		}
		if (intparm == QETH_RCD_PARM) {
			channel->state = CH_STATE_DOWN;
			goto out;
		}
		rc = qeth_get_problem(cdev, irb);
		if (rc) {
1063
			qeth_clear_ipacmd_list(card);
F
Frank Blaschka 已提交
1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096
			qeth_schedule_recovery(card);
			goto out;
		}
	}

	if (intparm == QETH_RCD_PARM) {
		channel->state = CH_STATE_RCD_DONE;
		goto out;
	}
	if (intparm) {
		buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
		buffer->state = BUF_STATE_PROCESSED;
	}
	if (channel == &card->data)
		return;
	if (channel == &card->read &&
	    channel->state == CH_STATE_UP)
		qeth_issue_next_read(card);

	iob = channel->iob;
	index = channel->buf_no;
	while (iob[index].state == BUF_STATE_PROCESSED) {
		if (iob[index].callback != NULL)
			iob[index].callback(channel, iob + index);

		index = (index + 1) % QETH_CMD_BUFFER_NO;
	}
	channel->buf_no = index;
out:
	wake_up(&card->wait_q);
	return;
}

1097
static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1098
		struct qeth_qdio_out_buffer *buf,
1099
		enum iucv_tx_notify notification)
F
Frank Blaschka 已提交
1100 1101 1102
{
	struct sk_buff *skb;

1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126
	if (skb_queue_empty(&buf->skb_list))
		goto out;
	skb = skb_peek(&buf->skb_list);
	while (skb) {
		QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
		QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
		if (skb->protocol == ETH_P_AF_IUCV) {
			if (skb->sk) {
				struct iucv_sock *iucv = iucv_sk(skb->sk);
				iucv->sk_txnotify(skb, notification);
			}
		}
		if (skb_queue_is_last(&buf->skb_list, skb))
			skb = NULL;
		else
			skb = skb_queue_next(&buf->skb_list, skb);
	}
out:
	return;
}

static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
{
	struct sk_buff *skb;
1127 1128 1129 1130 1131 1132 1133 1134
	struct iucv_sock *iucv;
	int notify_general_error = 0;

	if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
		notify_general_error = 1;

	/* release may never happen from within CQ tasklet scope */
	BUG_ON(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
F
Frank Blaschka 已提交
1135

1136 1137
	skb = skb_dequeue(&buf->skb_list);
	while (skb) {
1138 1139
		QETH_CARD_TEXT(buf->q->card, 5, "skbr");
		QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1140 1141 1142 1143 1144 1145
		if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
			if (skb->sk) {
				iucv = iucv_sk(skb->sk);
				iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
			}
		}
1146 1147
		atomic_dec(&skb->users);
		dev_kfree_skb_any(skb);
F
Frank Blaschka 已提交
1148 1149
		skb = skb_dequeue(&buf->skb_list);
	}
1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164
}

static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
		struct qeth_qdio_out_buffer *buf,
		enum qeth_qdio_buffer_states newbufstate)
{
	int i;

	/* is PCI flag set on buffer? */
	if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
		atomic_dec(&queue->set_pci_flags_count);

	if (newbufstate == QETH_QDIO_BUF_EMPTY) {
		qeth_release_skbs(buf);
	}
F
Frank Blaschka 已提交
1165
	for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1166 1167 1168 1169
		if (buf->buffer->element[i].addr && buf->is_header[i])
			kmem_cache_free(qeth_core_header_cache,
				buf->buffer->element[i].addr);
		buf->is_header[i] = 0;
F
Frank Blaschka 已提交
1170 1171
		buf->buffer->element[i].length = 0;
		buf->buffer->element[i].addr = NULL;
1172 1173
		buf->buffer->element[i].eflags = 0;
		buf->buffer->element[i].sflags = 0;
F
Frank Blaschka 已提交
1174
	}
1175 1176
	buf->buffer->element[15].eflags = 0;
	buf->buffer->element[15].sflags = 0;
F
Frank Blaschka 已提交
1177
	buf->next_element_to_fill = 0;
1178 1179 1180 1181 1182 1183 1184 1185 1186 1187
	atomic_set(&buf->state, newbufstate);
}

static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
{
	int j;

	for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
		if (!q->bufs[j])
			continue;
1188
		qeth_cleanup_handled_pending(q, j, 1);
1189 1190 1191 1192 1193 1194
		qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
		if (free) {
			kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
			q->bufs[j] = NULL;
		}
	}
F
Frank Blaschka 已提交
1195 1196 1197 1198
}

void qeth_clear_qdio_buffers(struct qeth_card *card)
{
1199
	int i;
F
Frank Blaschka 已提交
1200

C
Carsten Otte 已提交
1201
	QETH_CARD_TEXT(card, 2, "clearqdbf");
F
Frank Blaschka 已提交
1202
	/* clear outbound buffers to free skbs */
1203
	for (i = 0; i < card->qdio.no_out_queues; ++i) {
F
Frank Blaschka 已提交
1204
		if (card->qdio.out_qs[i]) {
1205
			qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
F
Frank Blaschka 已提交
1206
		}
1207
	}
F
Frank Blaschka 已提交
1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225
}
EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);

static void qeth_free_buffer_pool(struct qeth_card *card)
{
	struct qeth_buffer_pool_entry *pool_entry, *tmp;
	int i = 0;
	list_for_each_entry_safe(pool_entry, tmp,
				 &card->qdio.init_pool.entry_list, init_list){
		for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
			free_page((unsigned long)pool_entry->elements[i]);
		list_del(&pool_entry->init_list);
		kfree(pool_entry);
	}
}

static void qeth_free_qdio_buffers(struct qeth_card *card)
{
1226
	int i, j;
F
Frank Blaschka 已提交
1227 1228 1229 1230

	if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
		QETH_QDIO_UNINITIALIZED)
		return;
1231 1232

	qeth_free_cq(card);
1233 1234
	cancel_delayed_work_sync(&card->buffer_reclaim_work);
	for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
1235
		dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
F
Frank Blaschka 已提交
1236 1237 1238 1239 1240 1241 1242
	kfree(card->qdio.in_q);
	card->qdio.in_q = NULL;
	/* inbound buffer pool */
	qeth_free_buffer_pool(card);
	/* free outbound qdio_qs */
	if (card->qdio.out_qs) {
		for (i = 0; i < card->qdio.no_out_queues; ++i) {
1243
			qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
F
Frank Blaschka 已提交
1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254
			kfree(card->qdio.out_qs[i]);
		}
		kfree(card->qdio.out_qs);
		card->qdio.out_qs = NULL;
	}
}

static void qeth_clean_channel(struct qeth_channel *channel)
{
	int cnt;

1255
	QETH_DBF_TEXT(SETUP, 2, "freech");
F
Frank Blaschka 已提交
1256 1257 1258 1259
	for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
		kfree(channel->iob[cnt].data);
}

1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283
static void qeth_set_single_write_queues(struct qeth_card *card)
{
	if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
	    (card->qdio.no_out_queues == 4))
		qeth_free_qdio_buffers(card);

	card->qdio.no_out_queues = 1;
	if (card->qdio.default_out_queue != 0)
		dev_info(&card->gdev->dev, "Priority Queueing not supported\n");

	card->qdio.default_out_queue = 0;
}

static void qeth_set_multiple_write_queues(struct qeth_card *card)
{
	if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
	    (card->qdio.no_out_queues == 1)) {
		qeth_free_qdio_buffers(card);
		card->qdio.default_out_queue = 2;
	}
	card->qdio.no_out_queues = 4;
}

static void qeth_update_from_chp_desc(struct qeth_card *card)
F
Frank Blaschka 已提交
1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296
{
	struct ccw_device *ccwdev;
	struct channelPath_dsc {
		u8 flags;
		u8 lsn;
		u8 desc;
		u8 chpid;
		u8 swla;
		u8 zeroes;
		u8 chla;
		u8 chpp;
	} *chp_dsc;

1297
	QETH_DBF_TEXT(SETUP, 2, "chp_desc");
F
Frank Blaschka 已提交
1298 1299

	ccwdev = card->data.ccwdev;
1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314
	chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
	if (!chp_dsc)
		goto out;

	card->info.func_level = 0x4100 + chp_dsc->desc;
	if (card->info.type == QETH_CARD_TYPE_IQD)
		goto out;

	/* CHPP field bit 6 == 1 -> single queue */
	if ((chp_dsc->chpp & 0x02) == 0x02)
		qeth_set_single_write_queues(card);
	else
		qeth_set_multiple_write_queues(card);
out:
	kfree(chp_dsc);
1315 1316
	QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
	QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
F
Frank Blaschka 已提交
1317 1318 1319 1320
}

static void qeth_init_qdio_info(struct qeth_card *card)
{
1321
	QETH_DBF_TEXT(SETUP, 4, "intqdinf");
F
Frank Blaschka 已提交
1322 1323 1324
	atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
	/* inbound */
	card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1325 1326 1327 1328
	if (card->info.type == QETH_CARD_TYPE_IQD)
		card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
	else
		card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
F
Frank Blaschka 已提交
1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341
	card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
	INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
	INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
}

static void qeth_set_intial_options(struct qeth_card *card)
{
	card->options.route4.type = NO_ROUTER;
	card->options.route6.type = NO_ROUTER;
	card->options.fake_broadcast = 0;
	card->options.add_hhlen = DEFAULT_ADD_HHLEN;
	card->options.performance_stats = 0;
	card->options.rx_sg_cb = QETH_RX_SG_CB;
E
Einar Lueck 已提交
1342
	card->options.isolation = ISOLATION_MODE_NONE;
1343
	card->options.cq = QETH_CQ_DISABLED;
F
Frank Blaschka 已提交
1344 1345 1346 1347 1348 1349 1350 1351
}

static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
{
	unsigned long flags;
	int rc = 0;

	spin_lock_irqsave(&card->thread_mask_lock, flags);
C
Carsten Otte 已提交
1352
	QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
F
Frank Blaschka 已提交
1353 1354 1355 1356 1357 1358 1359 1360 1361 1362
			(u8) card->thread_start_mask,
			(u8) card->thread_allowed_mask,
			(u8) card->thread_running_mask);
	rc = (card->thread_start_mask & thread);
	spin_unlock_irqrestore(&card->thread_mask_lock, flags);
	return rc;
}

static void qeth_start_kernel_thread(struct work_struct *work)
{
1363
	struct task_struct *ts;
F
Frank Blaschka 已提交
1364 1365
	struct qeth_card *card = container_of(work, struct qeth_card,
					kernel_thread_starter);
C
Carsten Otte 已提交
1366
	QETH_CARD_TEXT(card , 2, "strthrd");
F
Frank Blaschka 已提交
1367 1368 1369 1370

	if (card->read.state != CH_STATE_UP &&
	    card->write.state != CH_STATE_UP)
		return;
1371
	if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1372
		ts = kthread_run(card->discipline->recover, (void *)card,
F
Frank Blaschka 已提交
1373
				"qeth_recover");
1374 1375 1376 1377 1378 1379
		if (IS_ERR(ts)) {
			qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
			qeth_clear_thread_running_bit(card,
				QETH_RECOVER_THREAD);
		}
	}
F
Frank Blaschka 已提交
1380 1381 1382 1383 1384
}

static int qeth_setup_card(struct qeth_card *card)
{

1385 1386
	QETH_DBF_TEXT(SETUP, 2, "setupcrd");
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
F
Frank Blaschka 已提交
1387 1388 1389 1390 1391 1392

	card->read.state  = CH_STATE_DOWN;
	card->write.state = CH_STATE_DOWN;
	card->data.state  = CH_STATE_DOWN;
	card->state = CARD_STATE_DOWN;
	card->lan_online = 0;
1393
	card->read_or_write_problem = 0;
F
Frank Blaschka 已提交
1394 1395 1396 1397 1398 1399
	card->dev = NULL;
	spin_lock_init(&card->vlanlock);
	spin_lock_init(&card->mclock);
	spin_lock_init(&card->lock);
	spin_lock_init(&card->ip_lock);
	spin_lock_init(&card->thread_mask_lock);
1400
	mutex_init(&card->conf_mutex);
1401
	mutex_init(&card->discipline_mutex);
F
Frank Blaschka 已提交
1402 1403 1404 1405 1406 1407 1408 1409
	card->thread_start_mask = 0;
	card->thread_allowed_mask = 0;
	card->thread_running_mask = 0;
	INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
	INIT_LIST_HEAD(&card->ip_list);
	INIT_LIST_HEAD(card->ip_tbd_list);
	INIT_LIST_HEAD(&card->cmd_waiter_list);
	init_waitqueue_head(&card->wait_q);
L
Lucas De Marchi 已提交
1410
	/* initial options */
F
Frank Blaschka 已提交
1411 1412 1413 1414 1415 1416 1417 1418
	qeth_set_intial_options(card);
	/* IP address takeover */
	INIT_LIST_HEAD(&card->ipato.entries);
	card->ipato.enabled = 0;
	card->ipato.invert4 = 0;
	card->ipato.invert6 = 0;
	/* init QDIO stuff */
	qeth_init_qdio_info(card);
1419
	INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
F
Frank Blaschka 已提交
1420 1421 1422
	return 0;
}

1423 1424 1425 1426
static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
{
	struct qeth_card *card = container_of(slr, struct qeth_card,
					qeth_service_level);
1427 1428 1429
	if (card->info.mcl_level[0])
		seq_printf(m, "qeth: %s firmware level %s\n",
			CARD_BUS_ID(card), card->info.mcl_level);
1430 1431
}

F
Frank Blaschka 已提交
1432 1433 1434 1435
static struct qeth_card *qeth_alloc_card(void)
{
	struct qeth_card *card;

1436
	QETH_DBF_TEXT(SETUP, 2, "alloccrd");
F
Frank Blaschka 已提交
1437 1438
	card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
	if (!card)
1439
		goto out;
1440
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1441
	card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1442 1443 1444
	if (!card->ip_tbd_list) {
		QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
		goto out_card;
F
Frank Blaschka 已提交
1445
	}
1446 1447 1448 1449
	if (qeth_setup_channel(&card->read))
		goto out_ip;
	if (qeth_setup_channel(&card->write))
		goto out_channel;
F
Frank Blaschka 已提交
1450
	card->options.layer2 = -1;
1451 1452
	card->qeth_service_level.seq_print = qeth_core_sl_print;
	register_service_level(&card->qeth_service_level);
F
Frank Blaschka 已提交
1453
	return card;
1454 1455 1456 1457 1458 1459 1460 1461 1462

out_channel:
	qeth_clean_channel(&card->read);
out_ip:
	kfree(card->ip_tbd_list);
out_card:
	kfree(card);
out:
	return NULL;
F
Frank Blaschka 已提交
1463 1464 1465 1466 1467 1468
}

static int qeth_determine_card_type(struct qeth_card *card)
{
	int i = 0;

1469
	QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
F
Frank Blaschka 已提交
1470 1471 1472

	card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
	card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1473 1474 1475 1476 1477 1478 1479 1480
	while (known_devices[i][QETH_DEV_MODEL_IND]) {
		if ((CARD_RDEV(card)->id.dev_type ==
				known_devices[i][QETH_DEV_TYPE_IND]) &&
		    (CARD_RDEV(card)->id.dev_model ==
				known_devices[i][QETH_DEV_MODEL_IND])) {
			card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
			card->qdio.no_out_queues =
				known_devices[i][QETH_QUEUE_NO_IND];
1481
			card->qdio.no_in_queues = 1;
1482 1483
			card->info.is_multicast_different =
				known_devices[i][QETH_MULTICAST_IND];
1484
			qeth_update_from_chp_desc(card);
F
Frank Blaschka 已提交
1485 1486 1487 1488 1489
			return 0;
		}
		i++;
	}
	card->info.type = QETH_CARD_TYPE_UNKNOWN;
1490 1491
	dev_err(&card->gdev->dev, "The adapter hardware is of an "
		"unknown type\n");
F
Frank Blaschka 已提交
1492 1493 1494 1495 1496 1497 1498 1499 1500 1501
	return -ENOENT;
}

static int qeth_clear_channel(struct qeth_channel *channel)
{
	unsigned long flags;
	struct qeth_card *card;
	int rc;

	card = CARD_FROM_CDEV(channel->ccwdev);
C
Carsten Otte 已提交
1502
	QETH_CARD_TEXT(card, 3, "clearch");
F
Frank Blaschka 已提交
1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525
	spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
	rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
	spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);

	if (rc)
		return rc;
	rc = wait_event_interruptible_timeout(card->wait_q,
			channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
	if (rc == -ERESTARTSYS)
		return rc;
	if (channel->state != CH_STATE_STOPPED)
		return -ETIME;
	channel->state = CH_STATE_DOWN;
	return 0;
}

static int qeth_halt_channel(struct qeth_channel *channel)
{
	unsigned long flags;
	struct qeth_card *card;
	int rc;

	card = CARD_FROM_CDEV(channel->ccwdev);
C
Carsten Otte 已提交
1526
	QETH_CARD_TEXT(card, 3, "haltch");
F
Frank Blaschka 已提交
1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545
	spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
	rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
	spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);

	if (rc)
		return rc;
	rc = wait_event_interruptible_timeout(card->wait_q,
			channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
	if (rc == -ERESTARTSYS)
		return rc;
	if (channel->state != CH_STATE_HALTED)
		return -ETIME;
	return 0;
}

static int qeth_halt_channels(struct qeth_card *card)
{
	int rc1 = 0, rc2 = 0, rc3 = 0;

C
Carsten Otte 已提交
1546
	QETH_CARD_TEXT(card, 3, "haltchs");
F
Frank Blaschka 已提交
1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560
	rc1 = qeth_halt_channel(&card->read);
	rc2 = qeth_halt_channel(&card->write);
	rc3 = qeth_halt_channel(&card->data);
	if (rc1)
		return rc1;
	if (rc2)
		return rc2;
	return rc3;
}

static int qeth_clear_channels(struct qeth_card *card)
{
	int rc1 = 0, rc2 = 0, rc3 = 0;

C
Carsten Otte 已提交
1561
	QETH_CARD_TEXT(card, 3, "clearchs");
F
Frank Blaschka 已提交
1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575
	rc1 = qeth_clear_channel(&card->read);
	rc2 = qeth_clear_channel(&card->write);
	rc3 = qeth_clear_channel(&card->data);
	if (rc1)
		return rc1;
	if (rc2)
		return rc2;
	return rc3;
}

static int qeth_clear_halt_card(struct qeth_card *card, int halt)
{
	int rc = 0;

C
Carsten Otte 已提交
1576
	QETH_CARD_TEXT(card, 3, "clhacrd");
F
Frank Blaschka 已提交
1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588

	if (halt)
		rc = qeth_halt_channels(card);
	if (rc)
		return rc;
	return qeth_clear_channels(card);
}

int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
{
	int rc = 0;

C
Carsten Otte 已提交
1589
	QETH_CARD_TEXT(card, 3, "qdioclr");
F
Frank Blaschka 已提交
1590 1591 1592 1593
	switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
		QETH_QDIO_CLEANING)) {
	case QETH_QDIO_ESTABLISHED:
		if (card->info.type == QETH_CARD_TYPE_IQD)
J
Jan Glauber 已提交
1594
			rc = qdio_shutdown(CARD_DDEV(card),
F
Frank Blaschka 已提交
1595 1596
				QDIO_FLAG_CLEANUP_USING_HALT);
		else
J
Jan Glauber 已提交
1597
			rc = qdio_shutdown(CARD_DDEV(card),
F
Frank Blaschka 已提交
1598 1599
				QDIO_FLAG_CLEANUP_USING_CLEAR);
		if (rc)
C
Carsten Otte 已提交
1600
			QETH_CARD_TEXT_(card, 3, "1err%d", rc);
J
Jan Glauber 已提交
1601
		qdio_free(CARD_DDEV(card));
F
Frank Blaschka 已提交
1602 1603 1604 1605 1606 1607 1608 1609 1610
		atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
		break;
	case QETH_QDIO_CLEANING:
		return rc;
	default:
		break;
	}
	rc = qeth_clear_halt_card(card, use_halt);
	if (rc)
C
Carsten Otte 已提交
1611
		QETH_CARD_TEXT_(card, 3, "2err%d", rc);
F
Frank Blaschka 已提交
1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664
	card->state = CARD_STATE_DOWN;
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);

static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
			       int *length)
{
	struct ciw *ciw;
	char *rcd_buf;
	int ret;
	struct qeth_channel *channel = &card->data;
	unsigned long flags;

	/*
	 * scan for RCD command in extended SenseID data
	 */
	ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
	if (!ciw || ciw->cmd == 0)
		return -EOPNOTSUPP;
	rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
	if (!rcd_buf)
		return -ENOMEM;

	channel->ccw.cmd_code = ciw->cmd;
	channel->ccw.cda = (__u32) __pa(rcd_buf);
	channel->ccw.count = ciw->count;
	channel->ccw.flags = CCW_FLAG_SLI;
	channel->state = CH_STATE_RCD;
	spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
	ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
				       QETH_RCD_PARM, LPM_ANYPATH, 0,
				       QETH_RCD_TIMEOUT);
	spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
	if (!ret)
		wait_event(card->wait_q,
			   (channel->state == CH_STATE_RCD_DONE ||
			    channel->state == CH_STATE_DOWN));
	if (channel->state == CH_STATE_DOWN)
		ret = -EIO;
	else
		channel->state = CH_STATE_DOWN;
	if (ret) {
		kfree(rcd_buf);
		*buffer = NULL;
		*length = 0;
	} else {
		*length = ciw->count;
		*buffer = rcd_buf;
	}
	return ret;
}

1665
static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
F
Frank Blaschka 已提交
1666
{
1667
	QETH_DBF_TEXT(SETUP, 2, "cfgunit");
F
Frank Blaschka 已提交
1668 1669 1670 1671 1672
	card->info.chpid = prcd[30];
	card->info.unit_addr2 = prcd[31];
	card->info.cula = prcd[63];
	card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
			       (prcd[0x11] == _ascebc['M']));
1673 1674 1675 1676 1677 1678
}

static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
{
	QETH_DBF_TEXT(SETUP, 2, "cfgblkt");

1679 1680
	if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
	    (prcd[76] == 0xF5 || prcd[76] == 0xF6)) {
1681 1682 1683 1684 1685 1686 1687 1688
		card->info.blkt.time_total = 250;
		card->info.blkt.inter_packet = 5;
		card->info.blkt.inter_packet_jumbo = 15;
	} else {
		card->info.blkt.time_total = 0;
		card->info.blkt.inter_packet = 0;
		card->info.blkt.inter_packet_jumbo = 0;
	}
F
Frank Blaschka 已提交
1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701
}

static void qeth_init_tokens(struct qeth_card *card)
{
	card->token.issuer_rm_w = 0x00010103UL;
	card->token.cm_filter_w = 0x00010108UL;
	card->token.cm_connection_w = 0x0001010aUL;
	card->token.ulp_filter_w = 0x0001010bUL;
	card->token.ulp_connection_w = 0x0001010dUL;
}

static void qeth_init_func_level(struct qeth_card *card)
{
1702 1703
	switch (card->info.type) {
	case QETH_CARD_TYPE_IQD:
1704
		card->info.func_level =	QETH_IDX_FUNC_LEVEL_IQD;
1705 1706
		break;
	case QETH_CARD_TYPE_OSD:
1707
	case QETH_CARD_TYPE_OSN:
1708 1709 1710 1711
		card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
		break;
	default:
		break;
F
Frank Blaschka 已提交
1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723
	}
}

static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
		void (*idx_reply_cb)(struct qeth_channel *,
			struct qeth_cmd_buffer *))
{
	struct qeth_cmd_buffer *iob;
	unsigned long flags;
	int rc;
	struct qeth_card *card;

1724
	QETH_DBF_TEXT(SETUP, 2, "idxanswr");
F
Frank Blaschka 已提交
1725 1726 1727 1728 1729 1730 1731 1732 1733
	card = CARD_FROM_CDEV(channel->ccwdev);
	iob = qeth_get_buffer(channel);
	iob->callback = idx_reply_cb;
	memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
	channel->ccw.count = QETH_BUFSIZE;
	channel->ccw.cda = (__u32) __pa(iob->data);

	wait_event(card->wait_q,
		   atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1734
	QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
F
Frank Blaschka 已提交
1735 1736 1737 1738 1739 1740
	spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
	rc = ccw_device_start(channel->ccwdev,
			      &channel->ccw, (addr_t) iob, 0, 0);
	spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);

	if (rc) {
1741
		QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1742
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
F
Frank Blaschka 已提交
1743 1744 1745 1746 1747 1748 1749 1750 1751 1752
		atomic_set(&channel->irq_pending, 0);
		wake_up(&card->wait_q);
		return rc;
	}
	rc = wait_event_interruptible_timeout(card->wait_q,
			 channel->state == CH_STATE_UP, QETH_TIMEOUT);
	if (rc == -ERESTARTSYS)
		return rc;
	if (channel->state != CH_STATE_UP) {
		rc = -ETIME;
1753
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
F
Frank Blaschka 已提交
1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769
		qeth_clear_cmd_buffers(channel);
	} else
		rc = 0;
	return rc;
}

static int qeth_idx_activate_channel(struct qeth_channel *channel,
		void (*idx_reply_cb)(struct qeth_channel *,
			struct qeth_cmd_buffer *))
{
	struct qeth_card *card;
	struct qeth_cmd_buffer *iob;
	unsigned long flags;
	__u16 temp;
	__u8 tmp;
	int rc;
C
Cornelia Huck 已提交
1770
	struct ccw_dev_id temp_devid;
F
Frank Blaschka 已提交
1771 1772 1773

	card = CARD_FROM_CDEV(channel->ccwdev);

1774
	QETH_DBF_TEXT(SETUP, 2, "idxactch");
F
Frank Blaschka 已提交
1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796

	iob = qeth_get_buffer(channel);
	iob->callback = idx_reply_cb;
	memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
	channel->ccw.count = IDX_ACTIVATE_SIZE;
	channel->ccw.cda = (__u32) __pa(iob->data);
	if (channel == &card->write) {
		memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
		memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
		       &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
		card->seqno.trans_hdr++;
	} else {
		memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
		memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
		       &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
	}
	tmp = ((__u8)card->info.portno) | 0x80;
	memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
	memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
	       &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
	memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
	       &card->info.func_level, sizeof(__u16));
C
Cornelia Huck 已提交
1797 1798
	ccw_device_get_id(CARD_DDEV(card), &temp_devid);
	memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
F
Frank Blaschka 已提交
1799 1800 1801 1802 1803
	temp = (card->info.cula << 8) + card->info.unit_addr2;
	memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);

	wait_event(card->wait_q,
		   atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1804
	QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
F
Frank Blaschka 已提交
1805 1806 1807 1808 1809 1810
	spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
	rc = ccw_device_start(channel->ccwdev,
			      &channel->ccw, (addr_t) iob, 0, 0);
	spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);

	if (rc) {
1811 1812
		QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
			rc);
1813
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
1814 1815 1816 1817 1818 1819 1820 1821 1822
		atomic_set(&channel->irq_pending, 0);
		wake_up(&card->wait_q);
		return rc;
	}
	rc = wait_event_interruptible_timeout(card->wait_q,
			channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
	if (rc == -ERESTARTSYS)
		return rc;
	if (channel->state != CH_STATE_ACTIVATING) {
1823 1824 1825 1826
		dev_warn(&channel->ccwdev->dev, "The qeth device driver"
			" failed to recover an error on the device\n");
		QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
			dev_name(&channel->ccwdev->dev));
1827
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
F
Frank Blaschka 已提交
1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848
		qeth_clear_cmd_buffers(channel);
		return -ETIME;
	}
	return qeth_idx_activate_get_answer(channel, idx_reply_cb);
}

static int qeth_peer_func_level(int level)
{
	if ((level & 0xff) == 8)
		return (level & 0xff) + 0x400;
	if (((level >> 8) & 3) == 1)
		return (level & 0xff) + 0x200;
	return level;
}

static void qeth_idx_write_cb(struct qeth_channel *channel,
		struct qeth_cmd_buffer *iob)
{
	struct qeth_card *card;
	__u16 temp;

1849
	QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
F
Frank Blaschka 已提交
1850 1851 1852 1853 1854 1855 1856 1857

	if (channel->state == CH_STATE_DOWN) {
		channel->state = CH_STATE_ACTIVATING;
		goto out;
	}
	card = CARD_FROM_CDEV(channel->ccwdev);

	if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1858
		if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1859 1860 1861
			dev_err(&card->write.ccwdev->dev,
				"The adapter is used exclusively by another "
				"host\n");
F
Frank Blaschka 已提交
1862
		else
1863 1864 1865
			QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
				" negative reply\n",
				dev_name(&card->write.ccwdev->dev));
F
Frank Blaschka 已提交
1866 1867 1868 1869
		goto out;
	}
	memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
	if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1870 1871 1872 1873
		QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
			"function level mismatch (sent: 0x%x, received: "
			"0x%x)\n", dev_name(&card->write.ccwdev->dev),
			card->info.func_level, temp);
F
Frank Blaschka 已提交
1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886
		goto out;
	}
	channel->state = CH_STATE_UP;
out:
	qeth_release_buffer(channel, iob);
}

static void qeth_idx_read_cb(struct qeth_channel *channel,
		struct qeth_cmd_buffer *iob)
{
	struct qeth_card *card;
	__u16 temp;

1887
	QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
F
Frank Blaschka 已提交
1888 1889 1890 1891 1892 1893
	if (channel->state == CH_STATE_DOWN) {
		channel->state = CH_STATE_ACTIVATING;
		goto out;
	}

	card = CARD_FROM_CDEV(channel->ccwdev);
1894
	if (qeth_check_idx_response(card, iob->data))
F
Frank Blaschka 已提交
1895 1896 1897
			goto out;

	if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1898 1899
		switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
		case QETH_IDX_ACT_ERR_EXCL:
1900 1901 1902
			dev_err(&card->write.ccwdev->dev,
				"The adapter is used exclusively by another "
				"host\n");
1903 1904
			break;
		case QETH_IDX_ACT_ERR_AUTH:
1905
		case QETH_IDX_ACT_ERR_AUTH_USER:
1906 1907
			dev_err(&card->read.ccwdev->dev,
				"Setting the device online failed because of "
1908
				"insufficient authorization\n");
1909 1910
			break;
		default:
1911 1912 1913
			QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
				" negative reply\n",
				dev_name(&card->read.ccwdev->dev));
1914
		}
1915 1916
		QETH_CARD_TEXT_(card, 2, "idxread%c",
			QETH_IDX_ACT_CAUSE_CODE(iob->data));
F
Frank Blaschka 已提交
1917 1918 1919 1920
		goto out;
	}

/**
1921 1922 1923
 *  * temporary fix for microcode bug
 *   * to revert it,replace OR by AND
 *    */
F
Frank Blaschka 已提交
1924
	if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1925
	     (card->info.type == QETH_CARD_TYPE_OSD))
F
Frank Blaschka 已提交
1926 1927 1928 1929
		card->info.portname_required = 1;

	memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
	if (temp != qeth_peer_func_level(card->info.func_level)) {
1930 1931 1932 1933
		QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
			"level mismatch (sent: 0x%x, received: 0x%x)\n",
			dev_name(&card->read.ccwdev->dev),
			card->info.func_level, temp);
F
Frank Blaschka 已提交
1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959
		goto out;
	}
	memcpy(&card->token.issuer_rm_r,
	       QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
	memcpy(&card->info.mcl_level[0],
	       QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
	channel->state = CH_STATE_UP;
out:
	qeth_release_buffer(channel, iob);
}

void qeth_prepare_control_data(struct qeth_card *card, int len,
		struct qeth_cmd_buffer *iob)
{
	qeth_setup_ccw(&card->write, iob->data, len);
	iob->callback = qeth_release_buffer;

	memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
	       &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
	card->seqno.trans_hdr++;
	memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
	       &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
	card->seqno.pdu_hdr++;
	memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
	       &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
1960
	QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
F
Frank Blaschka 已提交
1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972
}
EXPORT_SYMBOL_GPL(qeth_prepare_control_data);

int qeth_send_control_data(struct qeth_card *card, int len,
		struct qeth_cmd_buffer *iob,
		int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
			unsigned long),
		void *reply_param)
{
	int rc;
	unsigned long flags;
	struct qeth_reply *reply = NULL;
1973
	unsigned long timeout, event_timeout;
1974
	struct qeth_ipa_cmd *cmd;
F
Frank Blaschka 已提交
1975

C
Carsten Otte 已提交
1976
	QETH_CARD_TEXT(card, 2, "sendctl");
F
Frank Blaschka 已提交
1977

1978 1979 1980 1981
	if (card->read_or_write_problem) {
		qeth_release_buffer(iob->channel, iob);
		return -EIO;
	}
F
Frank Blaschka 已提交
1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995
	reply = qeth_alloc_reply(card);
	if (!reply) {
		return -ENOMEM;
	}
	reply->callback = reply_cb;
	reply->param = reply_param;
	if (card->state == CARD_STATE_DOWN)
		reply->seqno = QETH_IDX_COMMAND_SEQNO;
	else
		reply->seqno = card->seqno.ipa++;
	init_waitqueue_head(&reply->wait_q);
	spin_lock_irqsave(&card->lock, flags);
	list_add_tail(&reply->list, &card->cmd_waiter_list);
	spin_unlock_irqrestore(&card->lock, flags);
1996
	QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
F
Frank Blaschka 已提交
1997 1998 1999 2000 2001

	while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
	qeth_prepare_control_data(card, len, iob);

	if (IS_IPA(iob->data))
2002
		event_timeout = QETH_IPA_TIMEOUT;
F
Frank Blaschka 已提交
2003
	else
2004 2005
		event_timeout = QETH_TIMEOUT;
	timeout = jiffies + event_timeout;
F
Frank Blaschka 已提交
2006

C
Carsten Otte 已提交
2007
	QETH_CARD_TEXT(card, 6, "noirqpnd");
F
Frank Blaschka 已提交
2008 2009 2010 2011 2012
	spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
	rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
			      (addr_t) iob, 0, 0);
	spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
	if (rc) {
2013 2014 2015
		QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
			"ccw_device_start rc = %i\n",
			dev_name(&card->write.ccwdev->dev), rc);
C
Carsten Otte 已提交
2016
		QETH_CARD_TEXT_(card, 2, " err%d", rc);
F
Frank Blaschka 已提交
2017 2018 2019 2020 2021 2022 2023 2024 2025
		spin_lock_irqsave(&card->lock, flags);
		list_del_init(&reply->list);
		qeth_put_reply(reply);
		spin_unlock_irqrestore(&card->lock, flags);
		qeth_release_buffer(iob->channel, iob);
		atomic_set(&card->write.irq_pending, 0);
		wake_up(&card->wait_q);
		return rc;
	}
2026 2027 2028 2029 2030 2031 2032

	/* we have only one long running ipassist, since we can ensure
	   process context of this command we can sleep */
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	if ((cmd->hdr.command == IPA_CMD_SETIP) &&
	    (cmd->hdr.prot_version == QETH_PROT_IPV4)) {
		if (!wait_event_timeout(reply->wait_q,
2033
		    atomic_read(&reply->received), event_timeout))
2034 2035 2036 2037 2038 2039
			goto time_err;
	} else {
		while (!atomic_read(&reply->received)) {
			if (time_after(jiffies, timeout))
				goto time_err;
			cpu_relax();
2040
		}
2041 2042
	}

2043 2044
	if (reply->rc == -EIO)
		goto error;
2045 2046 2047 2048 2049
	rc = reply->rc;
	qeth_put_reply(reply);
	return rc;

time_err:
2050
	reply->rc = -ETIME;
2051 2052 2053 2054
	spin_lock_irqsave(&reply->card->lock, flags);
	list_del_init(&reply->list);
	spin_unlock_irqrestore(&reply->card->lock, flags);
	atomic_inc(&reply->received);
2055
error:
2056 2057 2058
	atomic_set(&card->write.irq_pending, 0);
	qeth_release_buffer(iob->channel, iob);
	card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
F
Frank Blaschka 已提交
2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069
	rc = reply->rc;
	qeth_put_reply(reply);
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_control_data);

static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
		unsigned long data)
{
	struct qeth_cmd_buffer *iob;

2070
	QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
F
Frank Blaschka 已提交
2071 2072 2073 2074 2075

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.cm_filter_r,
	       QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
2076
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
2077 2078 2079 2080 2081 2082 2083 2084
	return 0;
}

static int qeth_cm_enable(struct qeth_card *card)
{
	int rc;
	struct qeth_cmd_buffer *iob;

2085
	QETH_DBF_TEXT(SETUP, 2, "cmenable");
F
Frank Blaschka 已提交
2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104

	iob = qeth_wait_for_buffer(&card->write);
	memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
	memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
	       &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
	memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
	       &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);

	rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
				    qeth_cm_enable_cb, NULL);
	return rc;
}

static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
		unsigned long data)
{

	struct qeth_cmd_buffer *iob;

2105
	QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
F
Frank Blaschka 已提交
2106 2107 2108 2109 2110

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.cm_connection_r,
	       QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
2111
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
2112 2113 2114 2115 2116 2117 2118 2119
	return 0;
}

static int qeth_cm_setup(struct qeth_card *card)
{
	int rc;
	struct qeth_cmd_buffer *iob;

2120
	QETH_DBF_TEXT(SETUP, 2, "cmsetup");
F
Frank Blaschka 已提交
2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142

	iob = qeth_wait_for_buffer(&card->write);
	memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
	memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
	       &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
	memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
	       &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
	memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
	       &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
	rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
				    qeth_cm_setup_cb, NULL);
	return rc;

}

static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card)
{
	switch (card->info.type) {
	case QETH_CARD_TYPE_UNKNOWN:
		return 1500;
	case QETH_CARD_TYPE_IQD:
		return card->info.max_mtu;
2143
	case QETH_CARD_TYPE_OSD:
F
Frank Blaschka 已提交
2144 2145 2146 2147 2148 2149 2150
		switch (card->info.link_type) {
		case QETH_LINK_TYPE_HSTR:
		case QETH_LINK_TYPE_LANE_TR:
			return 2000;
		default:
			return 1492;
		}
2151 2152 2153
	case QETH_CARD_TYPE_OSM:
	case QETH_CARD_TYPE_OSX:
		return 1492;
F
Frank Blaschka 已提交
2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177
	default:
		return 1500;
	}
}

static inline int qeth_get_mtu_outof_framesize(int framesize)
{
	switch (framesize) {
	case 0x4000:
		return 8192;
	case 0x6000:
		return 16384;
	case 0xa000:
		return 32768;
	case 0xffff:
		return 57344;
	default:
		return 0;
	}
}

static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
{
	switch (card->info.type) {
2178 2179 2180
	case QETH_CARD_TYPE_OSD:
	case QETH_CARD_TYPE_OSM:
	case QETH_CARD_TYPE_OSX:
F
Frank Blaschka 已提交
2181 2182
	case QETH_CARD_TYPE_IQD:
		return ((mtu >= 576) &&
2183
			(mtu <= card->info.max_mtu));
F
Frank Blaschka 已提交
2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199
	case QETH_CARD_TYPE_OSN:
	case QETH_CARD_TYPE_UNKNOWN:
	default:
		return 1;
	}
}

static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
		unsigned long data)
{

	__u16 mtu, framesize;
	__u16 len;
	__u8 link_type;
	struct qeth_cmd_buffer *iob;

2200
	QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
F
Frank Blaschka 已提交
2201 2202 2203 2204 2205

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.ulp_filter_r,
	       QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
2206
	if (card->info.type == QETH_CARD_TYPE_IQD) {
F
Frank Blaschka 已提交
2207 2208 2209 2210
		memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
		mtu = qeth_get_mtu_outof_framesize(framesize);
		if (!mtu) {
			iob->rc = -EINVAL;
2211
			QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
2212 2213
			return 0;
		}
2214 2215 2216 2217 2218 2219 2220 2221
		if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
			/* frame size has changed */
			if (card->dev &&
			    ((card->dev->mtu == card->info.initial_mtu) ||
			     (card->dev->mtu > mtu)))
				card->dev->mtu = mtu;
			qeth_free_qdio_buffers(card);
		}
F
Frank Blaschka 已提交
2222
		card->info.initial_mtu = mtu;
2223
		card->info.max_mtu = mtu;
F
Frank Blaschka 已提交
2224 2225 2226
		card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
	} else {
		card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
2227 2228
		card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
			iob->data);
F
Frank Blaschka 已提交
2229 2230 2231 2232 2233 2234 2235 2236 2237 2238
		card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
	}

	memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
	if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
		memcpy(&link_type,
		       QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
		card->info.link_type = link_type;
	} else
		card->info.link_type = 0;
2239
	QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2240
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
2241 2242 2243 2244 2245 2246 2247 2248 2249 2250
	return 0;
}

static int qeth_ulp_enable(struct qeth_card *card)
{
	int rc;
	char prot_type;
	struct qeth_cmd_buffer *iob;

	/*FIXME: trace view callbacks*/
2251
	QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
F
Frank Blaschka 已提交
2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282

	iob = qeth_wait_for_buffer(&card->write);
	memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);

	*(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
		(__u8) card->info.portno;
	if (card->options.layer2)
		if (card->info.type == QETH_CARD_TYPE_OSN)
			prot_type = QETH_PROT_OSN2;
		else
			prot_type = QETH_PROT_LAYER2;
	else
		prot_type = QETH_PROT_TCPIP;

	memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
	memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
	       &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
	memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
	       &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
	memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data),
	       card->info.portname, 9);
	rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
				    qeth_ulp_enable_cb, NULL);
	return rc;

}

static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
		unsigned long data)
{
	struct qeth_cmd_buffer *iob;
2283
	int rc = 0;
F
Frank Blaschka 已提交
2284

2285
	QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
F
Frank Blaschka 已提交
2286 2287 2288 2289 2290

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.ulp_connection_r,
	       QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
2291 2292 2293 2294 2295
	if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
		     3)) {
		QETH_DBF_TEXT(SETUP, 2, "olmlimit");
		dev_err(&card->gdev->dev, "A connection could not be "
			"established because of an OLM limit\n");
2296
		iob->rc = -EMLINK;
2297
	}
2298
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2299
	return rc;
F
Frank Blaschka 已提交
2300 2301 2302 2303 2304 2305 2306 2307 2308
}

static int qeth_ulp_setup(struct qeth_card *card)
{
	int rc;
	__u16 temp;
	struct qeth_cmd_buffer *iob;
	struct ccw_dev_id dev_id;

2309
	QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
F
Frank Blaschka 已提交
2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329

	iob = qeth_wait_for_buffer(&card->write);
	memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);

	memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
	       &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
	memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
	       &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
	memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
	       &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);

	ccw_device_get_id(CARD_DDEV(card), &dev_id);
	memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
	temp = (card->info.cula << 8) + card->info.unit_addr2;
	memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
	rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
				    qeth_ulp_setup_cb, NULL);
	return rc;
}

2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360
static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
{
	int rc;
	struct qeth_qdio_out_buffer *newbuf;

	rc = 0;
	newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
	if (!newbuf) {
		rc = -ENOMEM;
		goto out;
	}
	newbuf->buffer = &q->qdio_bufs[bidx];
	skb_queue_head_init(&newbuf->skb_list);
	lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
	newbuf->q = q;
	newbuf->aob = NULL;
	newbuf->next_pending = q->bufs[bidx];
	atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
	q->bufs[bidx] = newbuf;
	if (q->bufstates) {
		q->bufstates[bidx].user = newbuf;
		QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
		QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
		QETH_CARD_TEXT_(q->card, 2, "%lx",
				(long) newbuf->next_pending);
	}
out:
	return rc;
}


F
Frank Blaschka 已提交
2361 2362 2363 2364
static int qeth_alloc_qdio_buffers(struct qeth_card *card)
{
	int i, j;

2365
	QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
F
Frank Blaschka 已提交
2366 2367 2368 2369 2370

	if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
		QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
		return 0;

2371
	card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2372
				   GFP_KERNEL);
F
Frank Blaschka 已提交
2373 2374
	if (!card->qdio.in_q)
		goto out_nomem;
2375 2376
	QETH_DBF_TEXT(SETUP, 2, "inq");
	QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
F
Frank Blaschka 已提交
2377 2378
	memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
	/* give inbound qeth_qdio_buffers their qdio_buffers */
2379
	for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
F
Frank Blaschka 已提交
2380 2381
		card->qdio.in_q->bufs[i].buffer =
			&card->qdio.in_q->qdio_bufs[i];
2382 2383
		card->qdio.in_q->bufs[i].rx_skb = NULL;
	}
F
Frank Blaschka 已提交
2384 2385 2386
	/* inbound buffer pool */
	if (qeth_alloc_buffer_pool(card))
		goto out_freeinq;
2387

F
Frank Blaschka 已提交
2388 2389
	/* outbound */
	card->qdio.out_qs =
2390
		kzalloc(card->qdio.no_out_queues *
F
Frank Blaschka 已提交
2391 2392 2393 2394
			sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
	if (!card->qdio.out_qs)
		goto out_freepool;
	for (i = 0; i < card->qdio.no_out_queues; ++i) {
2395
		card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2396
					       GFP_KERNEL);
F
Frank Blaschka 已提交
2397 2398
		if (!card->qdio.out_qs[i])
			goto out_freeoutq;
2399 2400
		QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
		QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
F
Frank Blaschka 已提交
2401 2402 2403
		card->qdio.out_qs[i]->queue_no = i;
		/* give outbound qeth_qdio_buffers their qdio_buffers */
		for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2404 2405 2406
			BUG_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
			if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
				goto out_freeoutqbufs;
F
Frank Blaschka 已提交
2407 2408
		}
	}
2409 2410 2411 2412 2413

	/* completion */
	if (qeth_alloc_cq(card))
		goto out_freeoutq;

F
Frank Blaschka 已提交
2414 2415
	return 0;

2416 2417 2418 2419 2420 2421 2422
out_freeoutqbufs:
	while (j > 0) {
		--j;
		kmem_cache_free(qeth_qdio_outbuf_cache,
				card->qdio.out_qs[i]->bufs[j]);
		card->qdio.out_qs[i]->bufs[j] = NULL;
	}
F
Frank Blaschka 已提交
2423
out_freeoutq:
2424
	while (i > 0) {
F
Frank Blaschka 已提交
2425
		kfree(card->qdio.out_qs[--i]);
2426 2427
		qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
	}
F
Frank Blaschka 已提交
2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467
	kfree(card->qdio.out_qs);
	card->qdio.out_qs = NULL;
out_freepool:
	qeth_free_buffer_pool(card);
out_freeinq:
	kfree(card->qdio.in_q);
	card->qdio.in_q = NULL;
out_nomem:
	atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
	return -ENOMEM;
}

static void qeth_create_qib_param_field(struct qeth_card *card,
		char *param_field)
{

	param_field[0] = _ascebc['P'];
	param_field[1] = _ascebc['C'];
	param_field[2] = _ascebc['I'];
	param_field[3] = _ascebc['T'];
	*((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
	*((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
	*((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
}

static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
		char *param_field)
{
	param_field[16] = _ascebc['B'];
	param_field[17] = _ascebc['L'];
	param_field[18] = _ascebc['K'];
	param_field[19] = _ascebc['T'];
	*((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
	*((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
	*((unsigned int *) (&param_field[28])) =
		card->info.blkt.inter_packet_jumbo;
}

static int qeth_qdio_activate(struct qeth_card *card)
{
2468
	QETH_DBF_TEXT(SETUP, 3, "qdioact");
J
Jan Glauber 已提交
2469
	return qdio_activate(CARD_DDEV(card));
F
Frank Blaschka 已提交
2470 2471 2472 2473 2474 2475 2476
}

static int qeth_dm_act(struct qeth_card *card)
{
	int rc;
	struct qeth_cmd_buffer *iob;

2477
	QETH_DBF_TEXT(SETUP, 2, "dmact");
F
Frank Blaschka 已提交
2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493

	iob = qeth_wait_for_buffer(&card->write);
	memcpy(iob->data, DM_ACT, DM_ACT_SIZE);

	memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
	       &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
	memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
	       &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
	rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
	return rc;
}

static int qeth_mpc_initialize(struct qeth_card *card)
{
	int rc;

2494
	QETH_DBF_TEXT(SETUP, 2, "mpcinit");
F
Frank Blaschka 已提交
2495 2496 2497

	rc = qeth_issue_next_read(card);
	if (rc) {
2498
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
2499 2500 2501 2502
		return rc;
	}
	rc = qeth_cm_enable(card);
	if (rc) {
2503
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
F
Frank Blaschka 已提交
2504 2505 2506 2507
		goto out_qdio;
	}
	rc = qeth_cm_setup(card);
	if (rc) {
2508
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
F
Frank Blaschka 已提交
2509 2510 2511 2512
		goto out_qdio;
	}
	rc = qeth_ulp_enable(card);
	if (rc) {
2513
		QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
F
Frank Blaschka 已提交
2514 2515 2516 2517
		goto out_qdio;
	}
	rc = qeth_ulp_setup(card);
	if (rc) {
2518
		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
F
Frank Blaschka 已提交
2519 2520 2521 2522
		goto out_qdio;
	}
	rc = qeth_alloc_qdio_buffers(card);
	if (rc) {
2523
		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
F
Frank Blaschka 已提交
2524 2525 2526 2527
		goto out_qdio;
	}
	rc = qeth_qdio_establish(card);
	if (rc) {
2528
		QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
F
Frank Blaschka 已提交
2529 2530 2531 2532 2533
		qeth_free_qdio_buffers(card);
		goto out_qdio;
	}
	rc = qeth_qdio_activate(card);
	if (rc) {
2534
		QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
F
Frank Blaschka 已提交
2535 2536 2537 2538
		goto out_qdio;
	}
	rc = qeth_dm_act(card);
	if (rc) {
2539
		QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
F
Frank Blaschka 已提交
2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558
		goto out_qdio;
	}

	return 0;
out_qdio:
	qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
	return rc;
}

static void qeth_print_status_with_portname(struct qeth_card *card)
{
	char dbf_text[15];
	int i;

	sprintf(dbf_text, "%s", card->info.portname + 1);
	for (i = 0; i < 8; i++)
		dbf_text[i] =
			(char) _ebcasc[(__u8) dbf_text[i]];
	dbf_text[8] = 0;
2559
	dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
F
Frank Blaschka 已提交
2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572
	       "with link type %s (portname: %s)\n",
	       qeth_get_cardname(card),
	       (card->info.mcl_level[0]) ? " (level: " : "",
	       (card->info.mcl_level[0]) ? card->info.mcl_level : "",
	       (card->info.mcl_level[0]) ? ")" : "",
	       qeth_get_cardname_short(card),
	       dbf_text);

}

static void qeth_print_status_no_portname(struct qeth_card *card)
{
	if (card->info.portname[0])
2573
		dev_info(&card->gdev->dev, "Device is a%s "
F
Frank Blaschka 已提交
2574 2575 2576 2577 2578 2579 2580 2581
		       "card%s%s%s\nwith link type %s "
		       "(no portname needed by interface).\n",
		       qeth_get_cardname(card),
		       (card->info.mcl_level[0]) ? " (level: " : "",
		       (card->info.mcl_level[0]) ? card->info.mcl_level : "",
		       (card->info.mcl_level[0]) ? ")" : "",
		       qeth_get_cardname_short(card));
	else
2582
		dev_info(&card->gdev->dev, "Device is a%s "
F
Frank Blaschka 已提交
2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593
		       "card%s%s%s\nwith link type %s.\n",
		       qeth_get_cardname(card),
		       (card->info.mcl_level[0]) ? " (level: " : "",
		       (card->info.mcl_level[0]) ? card->info.mcl_level : "",
		       (card->info.mcl_level[0]) ? ")" : "",
		       qeth_get_cardname_short(card));
}

void qeth_print_status_message(struct qeth_card *card)
{
	switch (card->info.type) {
2594 2595 2596
	case QETH_CARD_TYPE_OSD:
	case QETH_CARD_TYPE_OSM:
	case QETH_CARD_TYPE_OSX:
F
Frank Blaschka 已提交
2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610
		/* VM will use a non-zero first character
		 * to indicate a HiperSockets like reporting
		 * of the level OSA sets the first character to zero
		 * */
		if (!card->info.mcl_level[0]) {
			sprintf(card->info.mcl_level, "%02x%02x",
				card->info.mcl_level[2],
				card->info.mcl_level[3]);

			card->info.mcl_level[QETH_MCL_LENGTH] = 0;
			break;
		}
		/* fallthrough */
	case QETH_CARD_TYPE_IQD:
2611 2612
		if ((card->info.guestlan) ||
		    (card->info.mcl_level[0] & 0x80)) {
F
Frank Blaschka 已提交
2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637
			card->info.mcl_level[0] = (char) _ebcasc[(__u8)
				card->info.mcl_level[0]];
			card->info.mcl_level[1] = (char) _ebcasc[(__u8)
				card->info.mcl_level[1]];
			card->info.mcl_level[2] = (char) _ebcasc[(__u8)
				card->info.mcl_level[2]];
			card->info.mcl_level[3] = (char) _ebcasc[(__u8)
				card->info.mcl_level[3]];
			card->info.mcl_level[QETH_MCL_LENGTH] = 0;
		}
		break;
	default:
		memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
	}
	if (card->info.portname_required)
		qeth_print_status_with_portname(card);
	else
		qeth_print_status_no_portname(card);
}
EXPORT_SYMBOL_GPL(qeth_print_status_message);

static void qeth_initialize_working_pool_list(struct qeth_card *card)
{
	struct qeth_buffer_pool_entry *entry;

C
Carsten Otte 已提交
2638
	QETH_CARD_TEXT(card, 5, "inwrklst");
F
Frank Blaschka 已提交
2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676

	list_for_each_entry(entry,
			    &card->qdio.init_pool.entry_list, init_list) {
		qeth_put_buffer_pool_entry(card, entry);
	}
}

static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
		struct qeth_card *card)
{
	struct list_head *plh;
	struct qeth_buffer_pool_entry *entry;
	int i, free;
	struct page *page;

	if (list_empty(&card->qdio.in_buf_pool.entry_list))
		return NULL;

	list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
		entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
		free = 1;
		for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
			if (page_count(virt_to_page(entry->elements[i])) > 1) {
				free = 0;
				break;
			}
		}
		if (free) {
			list_del_init(&entry->list);
			return entry;
		}
	}

	/* no free buffer in pool so take first one and swap pages */
	entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
			struct qeth_buffer_pool_entry, list);
	for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
		if (page_count(virt_to_page(entry->elements[i])) > 1) {
2677
			page = alloc_page(GFP_ATOMIC);
F
Frank Blaschka 已提交
2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697
			if (!page) {
				return NULL;
			} else {
				free_page((unsigned long)entry->elements[i]);
				entry->elements[i] = page_address(page);
				if (card->options.performance_stats)
					card->perf_stats.sg_alloc_page_rx++;
			}
		}
	}
	list_del_init(&entry->list);
	return entry;
}

static int qeth_init_input_buffer(struct qeth_card *card,
		struct qeth_qdio_buffer *buf)
{
	struct qeth_buffer_pool_entry *pool_entry;
	int i;

2698 2699 2700 2701 2702 2703
	if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
		buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
		if (!buf->rx_skb)
			return 1;
	}

F
Frank Blaschka 已提交
2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719
	pool_entry = qeth_find_free_buffer_pool_entry(card);
	if (!pool_entry)
		return 1;

	/*
	 * since the buffer is accessed only from the input_tasklet
	 * there shouldn't be a need to synchronize; also, since we use
	 * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
	 * buffers
	 */

	buf->pool_entry = pool_entry;
	for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
		buf->buffer->element[i].length = PAGE_SIZE;
		buf->buffer->element[i].addr =  pool_entry->elements[i];
		if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2720
			buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
F
Frank Blaschka 已提交
2721
		else
2722 2723
			buf->buffer->element[i].eflags = 0;
		buf->buffer->element[i].sflags = 0;
F
Frank Blaschka 已提交
2724 2725 2726 2727 2728 2729 2730 2731 2732
	}
	return 0;
}

int qeth_init_qdio_queues(struct qeth_card *card)
{
	int i, j;
	int rc;

2733
	QETH_DBF_TEXT(SETUP, 2, "initqdqs");
F
Frank Blaschka 已提交
2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744

	/* inbound queue */
	memset(card->qdio.in_q->qdio_bufs, 0,
	       QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
	qeth_initialize_working_pool_list(card);
	/*give only as many buffers to hardware as we have buffer pool entries*/
	for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
		qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
	card->qdio.in_q->next_buf_to_init =
		card->qdio.in_buf_pool.buf_count - 1;
	rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
J
Jan Glauber 已提交
2745
		     card->qdio.in_buf_pool.buf_count - 1);
F
Frank Blaschka 已提交
2746
	if (rc) {
2747
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
2748 2749
		return rc;
	}
2750 2751 2752 2753 2754 2755 2756

	/* completion */
	rc = qeth_cq_init(card);
	if (rc) {
		return rc;
	}

F
Frank Blaschka 已提交
2757 2758 2759 2760 2761 2762
	/* outbound queue */
	for (i = 0; i < card->qdio.no_out_queues; ++i) {
		memset(card->qdio.out_qs[i]->qdio_bufs, 0,
		       QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
		for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
			qeth_clear_output_buffer(card->qdio.out_qs[i],
2763 2764
					card->qdio.out_qs[i]->bufs[j],
					QETH_QDIO_BUF_EMPTY);
F
Frank Blaschka 已提交
2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839
		}
		card->qdio.out_qs[i]->card = card;
		card->qdio.out_qs[i]->next_buf_to_fill = 0;
		card->qdio.out_qs[i]->do_pack = 0;
		atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
		atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
		atomic_set(&card->qdio.out_qs[i]->state,
			   QETH_OUT_Q_UNLOCKED);
	}
	return 0;
}
EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);

static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
{
	switch (link_type) {
	case QETH_LINK_TYPE_HSTR:
		return 2;
	default:
		return 1;
	}
}

static void qeth_fill_ipacmd_header(struct qeth_card *card,
		struct qeth_ipa_cmd *cmd, __u8 command,
		enum qeth_prot_versions prot)
{
	memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
	cmd->hdr.command = command;
	cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
	cmd->hdr.seqno = card->seqno.ipa;
	cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
	cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
	if (card->options.layer2)
		cmd->hdr.prim_version_no = 2;
	else
		cmd->hdr.prim_version_no = 1;
	cmd->hdr.param_count = 1;
	cmd->hdr.prot_version = prot;
	cmd->hdr.ipa_supported = 0;
	cmd->hdr.ipa_enabled = 0;
}

struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
		enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
{
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd *cmd;

	iob = qeth_wait_for_buffer(&card->write);
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);

	return iob;
}
EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);

void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
		char prot_type)
{
	memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
	memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
	memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
	       &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
}
EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);

int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
		int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
			unsigned long),
		void *reply_param)
{
	int rc;
	char prot_type;

C
Carsten Otte 已提交
2840
	QETH_CARD_TEXT(card, 4, "sendipa");
F
Frank Blaschka 已提交
2841 2842 2843 2844 2845 2846 2847 2848 2849

	if (card->options.layer2)
		if (card->info.type == QETH_CARD_TYPE_OSN)
			prot_type = QETH_PROT_OSN2;
		else
			prot_type = QETH_PROT_LAYER2;
	else
		prot_type = QETH_PROT_TCPIP;
	qeth_prepare_ipa_cmd(card, iob, prot_type);
2850 2851
	rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
						iob, reply_cb, reply_param);
2852 2853 2854 2855
	if (rc == -ETIME) {
		qeth_clear_ipacmd_list(card);
		qeth_schedule_recovery(card);
	}
F
Frank Blaschka 已提交
2856 2857 2858 2859 2860 2861 2862
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);

int qeth_send_startlan(struct qeth_card *card)
{
	int rc;
2863
	struct qeth_cmd_buffer *iob;
F
Frank Blaschka 已提交
2864

2865
	QETH_DBF_TEXT(SETUP, 2, "strtlan");
F
Frank Blaschka 已提交
2866

2867 2868
	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
	rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
F
Frank Blaschka 已提交
2869 2870 2871 2872 2873 2874 2875 2876 2877
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_startlan);

int qeth_default_setadapterparms_cb(struct qeth_card *card,
		struct qeth_reply *reply, unsigned long data)
{
	struct qeth_ipa_cmd *cmd;

C
Carsten Otte 已提交
2878
	QETH_CARD_TEXT(card, 4, "defadpcb");
F
Frank Blaschka 已提交
2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892

	cmd = (struct qeth_ipa_cmd *) data;
	if (cmd->hdr.return_code == 0)
		cmd->hdr.return_code =
			cmd->data.setadapterparms.hdr.return_code;
	return 0;
}
EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb);

static int qeth_query_setadapterparms_cb(struct qeth_card *card,
		struct qeth_reply *reply, unsigned long data)
{
	struct qeth_ipa_cmd *cmd;

C
Carsten Otte 已提交
2893
	QETH_CARD_TEXT(card, 3, "quyadpcb");
F
Frank Blaschka 已提交
2894 2895

	cmd = (struct qeth_ipa_cmd *) data;
2896
	if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
F
Frank Blaschka 已提交
2897 2898
		card->info.link_type =
		      cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2899 2900
		QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
	}
F
Frank Blaschka 已提交
2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928
	card->options.adp.supported_funcs =
		cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
	return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
}

struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
		__u32 command, __u32 cmdlen)
{
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd *cmd;

	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
				     QETH_PROT_IPV4);
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
	cmd->data.setadapterparms.hdr.command_code = command;
	cmd->data.setadapterparms.hdr.used_total = 1;
	cmd->data.setadapterparms.hdr.seq_no = 1;

	return iob;
}
EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);

int qeth_query_setadapterparms(struct qeth_card *card)
{
	int rc;
	struct qeth_cmd_buffer *iob;

C
Carsten Otte 已提交
2929
	QETH_CARD_TEXT(card, 3, "queryadp");
F
Frank Blaschka 已提交
2930 2931 2932 2933 2934 2935 2936
	iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
				   sizeof(struct qeth_ipacmd_setadpparms));
	rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);

2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952
static int qeth_query_ipassists_cb(struct qeth_card *card,
		struct qeth_reply *reply, unsigned long data)
{
	struct qeth_ipa_cmd *cmd;

	QETH_DBF_TEXT(SETUP, 2, "qipasscb");

	cmd = (struct qeth_ipa_cmd *) data;
	if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
		card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
		card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
	} else {
		card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
		card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
	}
	QETH_DBF_TEXT(SETUP, 2, "suppenbl");
2953 2954
	QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_supported);
	QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_enabled);
2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003
	return 0;
}

int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
{
	int rc;
	struct qeth_cmd_buffer *iob;

	QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
	rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_query_ipassists);

static int qeth_query_setdiagass_cb(struct qeth_card *card,
		struct qeth_reply *reply, unsigned long data)
{
	struct qeth_ipa_cmd *cmd;
	__u16 rc;

	cmd = (struct qeth_ipa_cmd *)data;
	rc = cmd->hdr.return_code;
	if (rc)
		QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
	else
		card->info.diagass_support = cmd->data.diagass.ext;
	return 0;
}

static int qeth_query_setdiagass(struct qeth_card *card)
{
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd    *cmd;

	QETH_DBF_TEXT(SETUP, 2, "qdiagass");
	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	cmd->data.diagass.subcmd_len = 16;
	cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
	return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
}

static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
{
	unsigned long info = get_zeroed_page(GFP_KERNEL);
	struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
	struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
	struct ccw_dev_id ccwid;
3004
	int level;
3005 3006 3007 3008 3009 3010 3011

	tid->chpid = card->info.chpid;
	ccw_device_get_id(CARD_RDEV(card), &ccwid);
	tid->ssid = ccwid.ssid;
	tid->devno = ccwid.devno;
	if (!info)
		return;
3012 3013
	level = stsi(NULL, 0, 0, 0);
	if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3014
		tid->lparnr = info222->lpar_number;
3015
	if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065
		EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
		memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
	}
	free_page(info);
	return;
}

static int qeth_hw_trap_cb(struct qeth_card *card,
		struct qeth_reply *reply, unsigned long data)
{
	struct qeth_ipa_cmd *cmd;
	__u16 rc;

	cmd = (struct qeth_ipa_cmd *)data;
	rc = cmd->hdr.return_code;
	if (rc)
		QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
	return 0;
}

int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
{
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd *cmd;

	QETH_DBF_TEXT(SETUP, 2, "diagtrap");
	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	cmd->data.diagass.subcmd_len = 80;
	cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
	cmd->data.diagass.type = 1;
	cmd->data.diagass.action = action;
	switch (action) {
	case QETH_DIAGS_TRAP_ARM:
		cmd->data.diagass.options = 0x0003;
		cmd->data.diagass.ext = 0x00010000 +
			sizeof(struct qeth_trap_id);
		qeth_get_trap_id(card,
			(struct qeth_trap_id *)cmd->data.diagass.cdata);
		break;
	case QETH_DIAGS_TRAP_DISARM:
		cmd->data.diagass.options = 0x0001;
		break;
	case QETH_DIAGS_TRAP_CAPTURE:
		break;
	}
	return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
}
EXPORT_SYMBOL_GPL(qeth_hw_trap);

3066 3067
int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
		unsigned int qdio_error, const char *dbftext)
F
Frank Blaschka 已提交
3068
{
J
Jan Glauber 已提交
3069
	if (qdio_error) {
C
Carsten Otte 已提交
3070
		QETH_CARD_TEXT(card, 2, dbftext);
C
Carsten Otte 已提交
3071
		QETH_CARD_TEXT_(card, 2, " F15=%02X",
3072
			       buf->element[15].sflags);
C
Carsten Otte 已提交
3073
		QETH_CARD_TEXT_(card, 2, " F14=%02X",
3074
			       buf->element[14].sflags);
C
Carsten Otte 已提交
3075
		QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3076
		if ((buf->element[15].sflags) == 0x12) {
3077 3078 3079 3080
			card->stats.rx_dropped++;
			return 0;
		} else
			return 1;
F
Frank Blaschka 已提交
3081 3082 3083 3084 3085
	}
	return 0;
}
EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);

3086 3087 3088 3089 3090 3091 3092 3093 3094
void qeth_buffer_reclaim_work(struct work_struct *work)
{
	struct qeth_card *card = container_of(work, struct qeth_card,
		buffer_reclaim_work.work);

	QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
	qeth_queue_input_buffer(card, card->reclaim_index);
}

F
Frank Blaschka 已提交
3095 3096 3097
void qeth_queue_input_buffer(struct qeth_card *card, int index)
{
	struct qeth_qdio_q *queue = card->qdio.in_q;
3098
	struct list_head *lh;
F
Frank Blaschka 已提交
3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129
	int count;
	int i;
	int rc;
	int newcount = 0;

	count = (index < queue->next_buf_to_init)?
		card->qdio.in_buf_pool.buf_count -
		(queue->next_buf_to_init - index) :
		card->qdio.in_buf_pool.buf_count -
		(queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
	/* only requeue at a certain threshold to avoid SIGAs */
	if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
		for (i = queue->next_buf_to_init;
		     i < queue->next_buf_to_init + count; ++i) {
			if (qeth_init_input_buffer(card,
				&queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
				break;
			} else {
				newcount++;
			}
		}

		if (newcount < count) {
			/* we are in memory shortage so we switch back to
			   traditional skb allocation and drop packages */
			atomic_set(&card->force_alloc_skb, 3);
			count = newcount;
		} else {
			atomic_add_unless(&card->force_alloc_skb, -1, 0);
		}

3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143
		if (!count) {
			i = 0;
			list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
				i++;
			if (i == card->qdio.in_buf_pool.buf_count) {
				QETH_CARD_TEXT(card, 2, "qsarbw");
				card->reclaim_index = index;
				schedule_delayed_work(
					&card->buffer_reclaim_work,
					QETH_RECLAIM_WORK_TIME);
			}
			return;
		}

F
Frank Blaschka 已提交
3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155
		/*
		 * according to old code it should be avoided to requeue all
		 * 128 buffers in order to benefit from PCI avoidance.
		 * this function keeps at least one buffer (the buffer at
		 * 'index') un-requeued -> this buffer is the first buffer that
		 * will be requeued the next time
		 */
		if (card->options.performance_stats) {
			card->perf_stats.inbound_do_qdio_cnt++;
			card->perf_stats.inbound_do_qdio_start_time =
				qeth_get_micros();
		}
J
Jan Glauber 已提交
3156 3157
		rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
			     queue->next_buf_to_init, count);
F
Frank Blaschka 已提交
3158 3159 3160 3161 3162
		if (card->options.performance_stats)
			card->perf_stats.inbound_do_qdio_time +=
				qeth_get_micros() -
				card->perf_stats.inbound_do_qdio_start_time;
		if (rc) {
C
Carsten Otte 已提交
3163
			QETH_CARD_TEXT(card, 2, "qinberr");
F
Frank Blaschka 已提交
3164 3165 3166 3167 3168 3169 3170 3171
		}
		queue->next_buf_to_init = (queue->next_buf_to_init + count) %
					  QDIO_MAX_BUFFERS_PER_Q;
	}
}
EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);

static int qeth_handle_send_error(struct qeth_card *card,
J
Jan Glauber 已提交
3172
		struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
F
Frank Blaschka 已提交
3173
{
3174
	int sbalf15 = buffer->buffer->element[15].sflags;
F
Frank Blaschka 已提交
3175

C
Carsten Otte 已提交
3176
	QETH_CARD_TEXT(card, 6, "hdsnderr");
3177 3178 3179 3180 3181 3182 3183
	if (card->info.type == QETH_CARD_TYPE_IQD) {
		if (sbalf15 == 0) {
			qdio_err = 0;
		} else {
			qdio_err = 1;
		}
	}
3184
	qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3185 3186

	if (!qdio_err)
F
Frank Blaschka 已提交
3187
		return QETH_SEND_ERROR_NONE;
3188 3189 3190 3191

	if ((sbalf15 >= 15) && (sbalf15 <= 31))
		return QETH_SEND_ERROR_RETRY;

C
Carsten Otte 已提交
3192 3193
	QETH_CARD_TEXT(card, 1, "lnkfail");
	QETH_CARD_TEXT_(card, 1, "%04x %02x",
3194 3195
		       (u16)qdio_err, (u8)sbalf15);
	return QETH_SEND_ERROR_LINK_FAILURE;
F
Frank Blaschka 已提交
3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207
}

/*
 * Switched to packing state if the number of used buffers on a queue
 * reaches a certain limit.
 */
static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
{
	if (!queue->do_pack) {
		if (atomic_read(&queue->used_buffers)
		    >= QETH_HIGH_WATERMARK_PACK){
			/* switch non-PACKING -> PACKING */
C
Carsten Otte 已提交
3208
			QETH_CARD_TEXT(queue->card, 6, "np->pack");
F
Frank Blaschka 已提交
3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230
			if (queue->card->options.performance_stats)
				queue->card->perf_stats.sc_dp_p++;
			queue->do_pack = 1;
		}
	}
}

/*
 * Switches from packing to non-packing mode. If there is a packing
 * buffer on the queue this buffer will be prepared to be flushed.
 * In that case 1 is returned to inform the caller. If no buffer
 * has to be flushed, zero is returned.
 */
static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
{
	struct qeth_qdio_out_buffer *buffer;
	int flush_count = 0;

	if (queue->do_pack) {
		if (atomic_read(&queue->used_buffers)
		    <= QETH_LOW_WATERMARK_PACK) {
			/* switch PACKING -> non-PACKING */
C
Carsten Otte 已提交
3231
			QETH_CARD_TEXT(queue->card, 6, "pack->np");
F
Frank Blaschka 已提交
3232 3233 3234 3235
			if (queue->card->options.performance_stats)
				queue->card->perf_stats.sc_p_dp++;
			queue->do_pack = 0;
			/* flush packing buffers */
3236
			buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3237 3238 3239 3240
			if ((atomic_read(&buffer->state) ==
						QETH_QDIO_BUF_EMPTY) &&
			    (buffer->next_element_to_fill > 0)) {
				atomic_set(&buffer->state,
3241
					   QETH_QDIO_BUF_PRIMED);
F
Frank Blaschka 已提交
3242 3243 3244 3245 3246 3247 3248 3249 3250 3251
				flush_count++;
				queue->next_buf_to_fill =
					(queue->next_buf_to_fill + 1) %
					QDIO_MAX_BUFFERS_PER_Q;
			}
		}
	}
	return flush_count;
}

3252

F
Frank Blaschka 已提交
3253 3254 3255 3256 3257 3258 3259 3260 3261
/*
 * Called to flush a packing buffer if no more pci flags are on the queue.
 * Checks if there is a packing buffer and prepares it to be flushed.
 * In that case returns 1, otherwise zero.
 */
static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
{
	struct qeth_qdio_out_buffer *buffer;

3262
	buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273
	if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
	   (buffer->next_element_to_fill > 0)) {
		/* it's a packing buffer */
		atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
		queue->next_buf_to_fill =
			(queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
		return 1;
	}
	return 0;
}

J
Jan Glauber 已提交
3274 3275
static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
			       int count)
F
Frank Blaschka 已提交
3276 3277 3278 3279 3280 3281 3282
{
	struct qeth_qdio_out_buffer *buf;
	int rc;
	int i;
	unsigned int qdio_flags;

	for (i = index; i < index + count; ++i) {
3283 3284
		int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
		buf = queue->bufs[bidx];
3285 3286
		buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
				SBAL_EFLAGS_LAST_ENTRY;
F
Frank Blaschka 已提交
3287

3288 3289 3290
		if (queue->bufstates)
			queue->bufstates[bidx].user = buf;

F
Frank Blaschka 已提交
3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301
		if (queue->card->info.type == QETH_CARD_TYPE_IQD)
			continue;

		if (!queue->do_pack) {
			if ((atomic_read(&queue->used_buffers) >=
				(QETH_HIGH_WATERMARK_PACK -
				 QETH_WATERMARK_PACK_FUZZ)) &&
			    !atomic_read(&queue->set_pci_flags_count)) {
				/* it's likely that we'll go to packing
				 * mode soon */
				atomic_inc(&queue->set_pci_flags_count);
3302
				buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
F
Frank Blaschka 已提交
3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314
			}
		} else {
			if (!atomic_read(&queue->set_pci_flags_count)) {
				/*
				 * there's no outstanding PCI any more, so we
				 * have to request a PCI to be sure the the PCI
				 * will wake at some time in the future then we
				 * can flush packed buffers that might still be
				 * hanging around, which can happen if no
				 * further send was requested by the stack
				 */
				atomic_inc(&queue->set_pci_flags_count);
3315
				buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
F
Frank Blaschka 已提交
3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329
			}
		}
	}

	queue->card->dev->trans_start = jiffies;
	if (queue->card->options.performance_stats) {
		queue->card->perf_stats.outbound_do_qdio_cnt++;
		queue->card->perf_stats.outbound_do_qdio_start_time =
			qeth_get_micros();
	}
	qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
	if (atomic_read(&queue->set_pci_flags_count))
		qdio_flags |= QDIO_FLAG_PCI_OUT;
	rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
J
Jan Glauber 已提交
3330
		     queue->queue_no, index, count);
F
Frank Blaschka 已提交
3331 3332 3333 3334
	if (queue->card->options.performance_stats)
		queue->card->perf_stats.outbound_do_qdio_time +=
			qeth_get_micros() -
			queue->card->perf_stats.outbound_do_qdio_start_time;
3335
	atomic_add(count, &queue->used_buffers);
F
Frank Blaschka 已提交
3336
	if (rc) {
3337 3338
		queue->card->stats.tx_errors += count;
		/* ignore temporary SIGA errors without busy condition */
3339
		if (rc == -ENOBUFS)
3340
			return;
C
Carsten Otte 已提交
3341
		QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3342 3343 3344
		QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
		QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
		QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
C
Carsten Otte 已提交
3345
		QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3346

F
Frank Blaschka 已提交
3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389
		/* this must not happen under normal circumstances. if it
		 * happens something is really wrong -> recover */
		qeth_schedule_recovery(queue->card);
		return;
	}
	if (queue->card->options.performance_stats)
		queue->card->perf_stats.bufs_sent += count;
}

static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
{
	int index;
	int flush_cnt = 0;
	int q_was_packing = 0;

	/*
	 * check if weed have to switch to non-packing mode or if
	 * we have to get a pci flag out on the queue
	 */
	if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
	    !atomic_read(&queue->set_pci_flags_count)) {
		if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
				QETH_OUT_Q_UNLOCKED) {
			/*
			 * If we get in here, there was no action in
			 * do_send_packet. So, we check if there is a
			 * packing buffer to be flushed here.
			 */
			netif_stop_queue(queue->card->dev);
			index = queue->next_buf_to_fill;
			q_was_packing = queue->do_pack;
			/* queue->do_pack may change */
			barrier();
			flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
			if (!flush_cnt &&
			    !atomic_read(&queue->set_pci_flags_count))
				flush_cnt +=
					qeth_flush_buffers_on_no_pci(queue);
			if (queue->card->options.performance_stats &&
			    q_was_packing)
				queue->card->perf_stats.bufs_sent_pack +=
					flush_cnt;
			if (flush_cnt)
J
Jan Glauber 已提交
3390
				qeth_flush_buffers(queue, index, flush_cnt);
F
Frank Blaschka 已提交
3391 3392 3393 3394 3395
			atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
		}
	}
}

3396 3397 3398 3399 3400
void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
		unsigned long card_ptr)
{
	struct qeth_card *card = (struct qeth_card *)card_ptr;

3401
	if (card->dev && (card->dev->flags & IFF_UP))
3402 3403 3404 3405
		napi_schedule(&card->napi);
}
EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);

3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504
int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
{
	int rc;

	if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
		rc = -1;
		goto out;
	} else {
		if (card->options.cq == cq) {
			rc = 0;
			goto out;
		}

		if (card->state != CARD_STATE_DOWN &&
		    card->state != CARD_STATE_RECOVER) {
			rc = -1;
			goto out;
		}

		qeth_free_qdio_buffers(card);
		card->options.cq = cq;
		rc = 0;
	}
out:
	return rc;

}
EXPORT_SYMBOL_GPL(qeth_configure_cq);


static void qeth_qdio_cq_handler(struct qeth_card *card,
		unsigned int qdio_err,
		unsigned int queue, int first_element, int count) {
	struct qeth_qdio_q *cq = card->qdio.c_q;
	int i;
	int rc;

	if (!qeth_is_cq(card, queue))
		goto out;

	QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
	QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
	QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);

	if (qdio_err) {
		netif_stop_queue(card->dev);
		qeth_schedule_recovery(card);
		goto out;
	}

	if (card->options.performance_stats) {
		card->perf_stats.cq_cnt++;
		card->perf_stats.cq_start_time = qeth_get_micros();
	}

	for (i = first_element; i < first_element + count; ++i) {
		int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
		struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
		int e;

		e = 0;
		while (buffer->element[e].addr) {
			unsigned long phys_aob_addr;

			phys_aob_addr = (unsigned long) buffer->element[e].addr;
			qeth_qdio_handle_aob(card, phys_aob_addr);
			buffer->element[e].addr = NULL;
			buffer->element[e].eflags = 0;
			buffer->element[e].sflags = 0;
			buffer->element[e].length = 0;

			++e;
		}

		buffer->element[15].eflags = 0;
		buffer->element[15].sflags = 0;
	}
	rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
		    card->qdio.c_q->next_buf_to_init,
		    count);
	if (rc) {
		dev_warn(&card->gdev->dev,
			"QDIO reported an error, rc=%i\n", rc);
		QETH_CARD_TEXT(card, 2, "qcqherr");
	}
	card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
				   + count) % QDIO_MAX_BUFFERS_PER_Q;

	netif_wake_queue(card->dev);

	if (card->options.performance_stats) {
		int delta_t = qeth_get_micros();
		delta_t -= card->perf_stats.cq_start_time;
		card->perf_stats.cq_time += delta_t;
	}
out:
	return;
}

3505
void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3506
		unsigned int queue, int first_elem, int count,
3507 3508 3509 3510
		unsigned long card_ptr)
{
	struct qeth_card *card = (struct qeth_card *)card_ptr;

3511 3512 3513 3514 3515 3516
	QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
	QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);

	if (qeth_is_cq(card, queue))
		qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
	else if (qdio_err)
3517
		qeth_schedule_recovery(card);
3518 3519


3520 3521 3522
}
EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);

J
Jan Glauber 已提交
3523 3524 3525
void qeth_qdio_output_handler(struct ccw_device *ccwdev,
		unsigned int qdio_error, int __queue, int first_element,
		int count, unsigned long card_ptr)
F
Frank Blaschka 已提交
3526 3527 3528 3529 3530 3531
{
	struct qeth_card *card        = (struct qeth_card *) card_ptr;
	struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
	struct qeth_qdio_out_buffer *buffer;
	int i;

C
Carsten Otte 已提交
3532
	QETH_CARD_TEXT(card, 6, "qdouhdl");
3533
	if (qdio_error & QDIO_ERROR_FATAL) {
C
Carsten Otte 已提交
3534
		QETH_CARD_TEXT(card, 2, "achkcond");
J
Jan Glauber 已提交
3535 3536 3537
		netif_stop_queue(card->dev);
		qeth_schedule_recovery(card);
		return;
F
Frank Blaschka 已提交
3538 3539 3540 3541 3542 3543 3544
	}
	if (card->options.performance_stats) {
		card->perf_stats.outbound_handler_cnt++;
		card->perf_stats.outbound_handler_start_time =
			qeth_get_micros();
	}
	for (i = first_element; i < (first_element + count); ++i) {
3545 3546
		int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
		buffer = queue->bufs[bidx];
3547
		qeth_handle_send_error(card, buffer, qdio_error);
3548 3549 3550 3551

		if (queue->bufstates &&
		    (queue->bufstates[bidx].flags &
		     QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3552 3553 3554 3555 3556 3557 3558 3559 3560
			BUG_ON(card->options.cq != QETH_CQ_ENABLED);

			if (atomic_cmpxchg(&buffer->state,
					   QETH_QDIO_BUF_PRIMED,
					   QETH_QDIO_BUF_PENDING) ==
				QETH_QDIO_BUF_PRIMED) {
				qeth_notify_skbs(queue, buffer,
						 TX_NOTIFY_PENDING);
			}
3561 3562
			buffer->aob = queue->bufstates[bidx].aob;
			QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3563
			QETH_CARD_TEXT(queue->card, 5, "aob");
3564 3565 3566
			QETH_CARD_TEXT_(queue->card, 5, "%lx",
					virt_to_phys(buffer->aob));
			BUG_ON(bidx < 0 || bidx >= QDIO_MAX_BUFFERS_PER_Q);
3567 3568
			if (qeth_init_qdio_out_buf(queue, bidx)) {
				QETH_CARD_TEXT(card, 2, "outofbuf");
3569
				qeth_schedule_recovery(card);
3570
			}
3571
		} else {
3572 3573 3574 3575 3576 3577 3578 3579
			if (card->options.cq == QETH_CQ_ENABLED) {
				enum iucv_tx_notify n;

				n = qeth_compute_cq_notification(
					buffer->buffer->element[15].sflags, 0);
				qeth_notify_skbs(queue, buffer, n);
			}

3580 3581 3582 3583
			qeth_clear_output_buffer(queue, buffer,
						QETH_QDIO_BUF_EMPTY);
		}
		qeth_cleanup_handled_pending(queue, bidx, 0);
F
Frank Blaschka 已提交
3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599
	}
	atomic_sub(count, &queue->used_buffers);
	/* check if we need to do something on this outbound queue */
	if (card->info.type != QETH_CARD_TYPE_IQD)
		qeth_check_outbound_queue(queue);

	netif_wake_queue(queue->card->dev);
	if (card->options.performance_stats)
		card->perf_stats.outbound_handler_time += qeth_get_micros() -
			card->perf_stats.outbound_handler_start_time;
}
EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);

int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
			int ipv, int cast_type)
{
3600 3601
	if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
		     card->info.type == QETH_CARD_TYPE_OSX))
F
Frank Blaschka 已提交
3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638
		return card->qdio.default_out_queue;
	switch (card->qdio.no_out_queues) {
	case 4:
		if (cast_type && card->info.is_multicast_different)
			return card->info.is_multicast_different &
				(card->qdio.no_out_queues - 1);
		if (card->qdio.do_prio_queueing && (ipv == 4)) {
			const u8 tos = ip_hdr(skb)->tos;

			if (card->qdio.do_prio_queueing ==
				QETH_PRIO_Q_ING_TOS) {
				if (tos & IP_TOS_NOTIMPORTANT)
					return 3;
				if (tos & IP_TOS_HIGHRELIABILITY)
					return 2;
				if (tos & IP_TOS_HIGHTHROUGHPUT)
					return 1;
				if (tos & IP_TOS_LOWDELAY)
					return 0;
			}
			if (card->qdio.do_prio_queueing ==
				QETH_PRIO_Q_ING_PREC)
				return 3 - (tos >> 6);
		} else if (card->qdio.do_prio_queueing && (ipv == 6)) {
			/* TODO: IPv6!!! */
		}
		return card->qdio.default_out_queue;
	case 1: /* fallthrough for single-out-queue 1920-device */
	default:
		return card->qdio.default_out_queue;
	}
}
EXPORT_SYMBOL_GPL(qeth_get_priority_queue);

int qeth_get_elements_no(struct qeth_card *card, void *hdr,
		     struct sk_buff *skb, int elems)
{
3639 3640 3641
	int dlen = skb->len - skb->data_len;
	int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
		PFN_DOWN((unsigned long)skb->data);
F
Frank Blaschka 已提交
3642

3643
	elements_needed += skb_shinfo(skb)->nr_frags;
F
Frank Blaschka 已提交
3644
	if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3645
		QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
F
Frank Blaschka 已提交
3646 3647 3648 3649 3650 3651 3652 3653
			"(Number=%d / Length=%d). Discarded.\n",
			(elements_needed+elems), skb->len);
		return 0;
	}
	return elements_needed;
}
EXPORT_SYMBOL_GPL(qeth_get_elements_no);

3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672
int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len)
{
	int hroom, inpage, rest;

	if (((unsigned long)skb->data & PAGE_MASK) !=
	    (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
		hroom = skb_headroom(skb);
		inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
		rest = len - inpage;
		if (rest > hroom)
			return 1;
		memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
		skb->data -= rest;
		QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
	}
	return 0;
}
EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);

F
Frank Blaschka 已提交
3673
static inline void __qeth_fill_buffer(struct sk_buff *skb,
3674 3675
	struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
	int offset)
F
Frank Blaschka 已提交
3676
{
3677
	int length = skb->len - skb->data_len;
F
Frank Blaschka 已提交
3678 3679 3680
	int length_here;
	int element;
	char *data;
3681 3682
	int first_lap, cnt;
	struct skb_frag_struct *frag;
F
Frank Blaschka 已提交
3683 3684 3685 3686 3687

	element = *next_element_to_fill;
	data = skb->data;
	first_lap = (is_tso == 0 ? 1 : 0);

3688 3689
	if (offset >= 0) {
		data = skb->data + offset;
3690
		length -= offset;
3691 3692 3693
		first_lap = 0;
	}

F
Frank Blaschka 已提交
3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704
	while (length > 0) {
		/* length_here is the remaining amount of data in this page */
		length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
		if (length < length_here)
			length_here = length;

		buffer->element[element].addr = data;
		buffer->element[element].length = length_here;
		length -= length_here;
		if (!length) {
			if (first_lap)
3705
				if (skb_shinfo(skb)->nr_frags)
3706 3707
					buffer->element[element].eflags =
						SBAL_EFLAGS_FIRST_FRAG;
3708
				else
3709
					buffer->element[element].eflags = 0;
F
Frank Blaschka 已提交
3710
			else
3711 3712
				buffer->element[element].eflags =
				    SBAL_EFLAGS_MIDDLE_FRAG;
F
Frank Blaschka 已提交
3713 3714
		} else {
			if (first_lap)
3715 3716
				buffer->element[element].eflags =
				    SBAL_EFLAGS_FIRST_FRAG;
F
Frank Blaschka 已提交
3717
			else
3718 3719
				buffer->element[element].eflags =
				    SBAL_EFLAGS_MIDDLE_FRAG;
F
Frank Blaschka 已提交
3720 3721 3722 3723 3724
		}
		data += length_here;
		element++;
		first_lap = 0;
	}
3725 3726 3727

	for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
		frag = &skb_shinfo(skb)->frags[cnt];
3728 3729
		buffer->element[element].addr = (char *)
			page_to_phys(skb_frag_page(frag))
3730 3731
			+ frag->page_offset;
		buffer->element[element].length = frag->size;
3732
		buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
3733 3734 3735
		element++;
	}

3736 3737
	if (buffer->element[element - 1].eflags)
		buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
F
Frank Blaschka 已提交
3738 3739 3740
	*next_element_to_fill = element;
}

F
Frank Blaschka 已提交
3741
static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3742 3743
		struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
		struct qeth_hdr *hdr, int offset, int hd_len)
F
Frank Blaschka 已提交
3744 3745 3746 3747 3748 3749 3750 3751 3752
{
	struct qdio_buffer *buffer;
	int flush_cnt = 0, hdr_len, large_send = 0;

	buffer = buf->buffer;
	atomic_inc(&skb->users);
	skb_queue_tail(&buf->skb_list, skb);

	/*check first on TSO ....*/
3753
	if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
F
Frank Blaschka 已提交
3754 3755
		int element = buf->next_element_to_fill;

3756 3757
		hdr_len = sizeof(struct qeth_hdr_tso) +
			((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
F
Frank Blaschka 已提交
3758 3759 3760
		/*fill first buffer entry only with header information */
		buffer->element[element].addr = skb->data;
		buffer->element[element].length = hdr_len;
3761
		buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
F
Frank Blaschka 已提交
3762 3763 3764 3765 3766
		buf->next_element_to_fill++;
		skb->data += hdr_len;
		skb->len  -= hdr_len;
		large_send = 1;
	}
3767 3768 3769 3770 3771 3772

	if (offset >= 0) {
		int element = buf->next_element_to_fill;
		buffer->element[element].addr = hdr;
		buffer->element[element].length = sizeof(struct qeth_hdr) +
							hd_len;
3773
		buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3774 3775 3776 3777
		buf->is_header[element] = 1;
		buf->next_element_to_fill++;
	}

3778 3779
	__qeth_fill_buffer(skb, buffer, large_send,
		(int *)&buf->next_element_to_fill, offset);
F
Frank Blaschka 已提交
3780 3781

	if (!queue->do_pack) {
C
Carsten Otte 已提交
3782
		QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
F
Frank Blaschka 已提交
3783 3784 3785 3786
		/* set state to PRIMED -> will be flushed */
		atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
		flush_cnt = 1;
	} else {
C
Carsten Otte 已提交
3787
		QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
F
Frank Blaschka 已提交
3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805
		if (queue->card->options.performance_stats)
			queue->card->perf_stats.skbs_sent_pack++;
		if (buf->next_element_to_fill >=
				QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
			/*
			 * packed buffer if full -> set state PRIMED
			 * -> will be flushed
			 */
			atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
			flush_cnt = 1;
		}
	}
	return flush_cnt;
}

int qeth_do_send_packet_fast(struct qeth_card *card,
		struct qeth_qdio_out_q *queue, struct sk_buff *skb,
		struct qeth_hdr *hdr, int elements_needed,
F
Frank Blaschka 已提交
3806
		int offset, int hd_len)
F
Frank Blaschka 已提交
3807 3808 3809 3810 3811 3812 3813 3814 3815
{
	struct qeth_qdio_out_buffer *buffer;
	int index;

	/* spin until we get the queue ... */
	while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
			      QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
	/* ... now we've got the queue */
	index = queue->next_buf_to_fill;
3816
	buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3817 3818 3819 3820 3821 3822
	/*
	 * check if buffer is empty to make sure that we do not 'overtake'
	 * ourselves and try to fill a buffer that is already primed
	 */
	if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
		goto out;
F
Frank Blaschka 已提交
3823
	queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
F
Frank Blaschka 已提交
3824 3825
					  QDIO_MAX_BUFFERS_PER_Q;
	atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
F
Frank Blaschka 已提交
3826 3827
	qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
	qeth_flush_buffers(queue, index, 1);
F
Frank Blaschka 已提交
3828 3829 3830 3831 3832 3833 3834 3835 3836
	return 0;
out:
	atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
	return -EBUSY;
}
EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);

int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
		struct sk_buff *skb, struct qeth_hdr *hdr,
F
Frank Blaschka 已提交
3837
		int elements_needed)
F
Frank Blaschka 已提交
3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849
{
	struct qeth_qdio_out_buffer *buffer;
	int start_index;
	int flush_count = 0;
	int do_pack = 0;
	int tmp;
	int rc = 0;

	/* spin until we get the queue ... */
	while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
			      QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
	start_index = queue->next_buf_to_fill;
3850
	buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862
	/*
	 * check if buffer is empty to make sure that we do not 'overtake'
	 * ourselves and try to fill a buffer that is already primed
	 */
	if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
		atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
		return -EBUSY;
	}
	/* check if we need to switch packing state of this queue */
	qeth_switch_to_packing_if_needed(queue);
	if (queue->do_pack) {
		do_pack = 1;
F
Frank Blaschka 已提交
3863 3864 3865 3866 3867 3868 3869 3870 3871
		/* does packet fit in current buffer? */
		if ((QETH_MAX_BUFFER_ELEMENTS(card) -
		    buffer->next_element_to_fill) < elements_needed) {
			/* ... no -> set state PRIMED */
			atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
			flush_count++;
			queue->next_buf_to_fill =
				(queue->next_buf_to_fill + 1) %
				QDIO_MAX_BUFFERS_PER_Q;
3872
			buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3873 3874 3875 3876 3877
			/* we did a step forward, so check buffer state
			 * again */
			if (atomic_read(&buffer->state) !=
			    QETH_QDIO_BUF_EMPTY) {
				qeth_flush_buffers(queue, start_index,
J
Jan Glauber 已提交
3878
							   flush_count);
F
Frank Blaschka 已提交
3879
				atomic_set(&queue->state,
F
Frank Blaschka 已提交
3880
						QETH_OUT_Q_UNLOCKED);
F
Frank Blaschka 已提交
3881
				return -EBUSY;
F
Frank Blaschka 已提交
3882 3883 3884
			}
		}
	}
F
Frank Blaschka 已提交
3885
	tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
F
Frank Blaschka 已提交
3886 3887 3888 3889
	queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
				  QDIO_MAX_BUFFERS_PER_Q;
	flush_count += tmp;
	if (flush_count)
J
Jan Glauber 已提交
3890
		qeth_flush_buffers(queue, start_index, flush_count);
F
Frank Blaschka 已提交
3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910
	else if (!atomic_read(&queue->set_pci_flags_count))
		atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
	/*
	 * queue->state will go from LOCKED -> UNLOCKED or from
	 * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
	 * (switch packing state or flush buffer to get another pci flag out).
	 * In that case we will enter this loop
	 */
	while (atomic_dec_return(&queue->state)) {
		flush_count = 0;
		start_index = queue->next_buf_to_fill;
		/* check if we can go back to non-packing state */
		flush_count += qeth_switch_to_nonpacking_if_needed(queue);
		/*
		 * check if we need to flush a packing buffer to get a pci
		 * flag out on the queue
		 */
		if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
			flush_count += qeth_flush_buffers_on_no_pci(queue);
		if (flush_count)
J
Jan Glauber 已提交
3911
			qeth_flush_buffers(queue, start_index, flush_count);
F
Frank Blaschka 已提交
3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926
	}
	/* at this point the queue is UNLOCKED again */
	if (queue->card->options.performance_stats && do_pack)
		queue->card->perf_stats.bufs_sent_pack += flush_count;

	return rc;
}
EXPORT_SYMBOL_GPL(qeth_do_send_packet);

static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
		struct qeth_reply *reply, unsigned long data)
{
	struct qeth_ipa_cmd *cmd;
	struct qeth_ipacmd_setadpparms *setparms;

C
Carsten Otte 已提交
3927
	QETH_CARD_TEXT(card, 4, "prmadpcb");
F
Frank Blaschka 已提交
3928 3929 3930 3931 3932 3933

	cmd = (struct qeth_ipa_cmd *) data;
	setparms = &(cmd->data.setadapterparms);

	qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
	if (cmd->hdr.return_code) {
C
Carsten Otte 已提交
3934
		QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
F
Frank Blaschka 已提交
3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947
		setparms->data.mode = SET_PROMISC_MODE_OFF;
	}
	card->info.promisc_mode = setparms->data.mode;
	return 0;
}

void qeth_setadp_promisc_mode(struct qeth_card *card)
{
	enum qeth_ipa_promisc_modes mode;
	struct net_device *dev = card->dev;
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd *cmd;

C
Carsten Otte 已提交
3948
	QETH_CARD_TEXT(card, 4, "setprom");
F
Frank Blaschka 已提交
3949 3950 3951 3952 3953 3954 3955 3956 3957

	if (((dev->flags & IFF_PROMISC) &&
	     (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
	    (!(dev->flags & IFF_PROMISC) &&
	     (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
		return;
	mode = SET_PROMISC_MODE_OFF;
	if (dev->flags & IFF_PROMISC)
		mode = SET_PROMISC_MODE_ON;
C
Carsten Otte 已提交
3958
	QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
F
Frank Blaschka 已提交
3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972

	iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
			sizeof(struct qeth_ipacmd_setadpparms));
	cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
	cmd->data.setadapterparms.data.mode = mode;
	qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
}
EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);

int qeth_change_mtu(struct net_device *dev, int new_mtu)
{
	struct qeth_card *card;
	char dbf_text[15];

3973
	card = dev->ml_priv;
F
Frank Blaschka 已提交
3974

C
Carsten Otte 已提交
3975
	QETH_CARD_TEXT(card, 4, "chgmtu");
F
Frank Blaschka 已提交
3976
	sprintf(dbf_text, "%8x", new_mtu);
C
Carsten Otte 已提交
3977
	QETH_CARD_TEXT(card, 4, dbf_text);
F
Frank Blaschka 已提交
3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994

	if (new_mtu < 64)
		return -EINVAL;
	if (new_mtu > 65535)
		return -EINVAL;
	if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) &&
	    (!qeth_mtu_is_valid(card, new_mtu)))
		return -EINVAL;
	dev->mtu = new_mtu;
	return 0;
}
EXPORT_SYMBOL_GPL(qeth_change_mtu);

struct net_device_stats *qeth_get_stats(struct net_device *dev)
{
	struct qeth_card *card;

3995
	card = dev->ml_priv;
F
Frank Blaschka 已提交
3996

C
Carsten Otte 已提交
3997
	QETH_CARD_TEXT(card, 5, "getstat");
F
Frank Blaschka 已提交
3998 3999 4000 4001 4002 4003 4004 4005 4006 4007

	return &card->stats;
}
EXPORT_SYMBOL_GPL(qeth_get_stats);

static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
		struct qeth_reply *reply, unsigned long data)
{
	struct qeth_ipa_cmd *cmd;

C
Carsten Otte 已提交
4008
	QETH_CARD_TEXT(card, 4, "chgmaccb");
F
Frank Blaschka 已提交
4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027

	cmd = (struct qeth_ipa_cmd *) data;
	if (!card->options.layer2 ||
	    !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
		memcpy(card->dev->dev_addr,
		       &cmd->data.setadapterparms.data.change_addr.addr,
		       OSA_ADDR_LEN);
		card->info.mac_bits |= QETH_LAYER2_MAC_READ;
	}
	qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
	return 0;
}

int qeth_setadpparms_change_macaddr(struct qeth_card *card)
{
	int rc;
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd *cmd;

C
Carsten Otte 已提交
4028
	QETH_CARD_TEXT(card, 4, "chgmac");
F
Frank Blaschka 已提交
4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042

	iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
				   sizeof(struct qeth_ipacmd_setadpparms));
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
	cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN;
	memcpy(&cmd->data.setadapterparms.data.change_addr.addr,
	       card->dev->dev_addr, OSA_ADDR_LEN);
	rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
			       NULL);
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);

E
Einar Lueck 已提交
4043 4044 4045 4046 4047 4048
static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
		struct qeth_reply *reply, unsigned long data)
{
	struct qeth_ipa_cmd *cmd;
	struct qeth_set_access_ctrl *access_ctrl_req;

C
Carsten Otte 已提交
4049
	QETH_CARD_TEXT(card, 4, "setaccb");
E
Einar Lueck 已提交
4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130

	cmd = (struct qeth_ipa_cmd *) data;
	access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
	QETH_DBF_TEXT_(SETUP, 2, "setaccb");
	QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
	QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
		cmd->data.setadapterparms.hdr.return_code);
	switch (cmd->data.setadapterparms.hdr.return_code) {
	case SET_ACCESS_CTRL_RC_SUCCESS:
	case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
	case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
	{
		card->options.isolation = access_ctrl_req->subcmd_code;
		if (card->options.isolation == ISOLATION_MODE_NONE) {
			dev_info(&card->gdev->dev,
			    "QDIO data connection isolation is deactivated\n");
		} else {
			dev_info(&card->gdev->dev,
			    "QDIO data connection isolation is activated\n");
		}
		QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
			card->gdev->dev.kobj.name,
			access_ctrl_req->subcmd_code,
			cmd->data.setadapterparms.hdr.return_code);
		break;
	}
	case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
	{
		QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
			card->gdev->dev.kobj.name,
			access_ctrl_req->subcmd_code,
			cmd->data.setadapterparms.hdr.return_code);
		dev_err(&card->gdev->dev, "Adapter does not "
			"support QDIO data connection isolation\n");

		/* ensure isolation mode is "none" */
		card->options.isolation = ISOLATION_MODE_NONE;
		break;
	}
	case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
	{
		QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
			card->gdev->dev.kobj.name,
			access_ctrl_req->subcmd_code,
			cmd->data.setadapterparms.hdr.return_code);
		dev_err(&card->gdev->dev,
			"Adapter is dedicated. "
			"QDIO data connection isolation not supported\n");

		/* ensure isolation mode is "none" */
		card->options.isolation = ISOLATION_MODE_NONE;
		break;
	}
	case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
	{
		QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
			card->gdev->dev.kobj.name,
			access_ctrl_req->subcmd_code,
			cmd->data.setadapterparms.hdr.return_code);
		dev_err(&card->gdev->dev,
			"TSO does not permit QDIO data connection isolation\n");

		/* ensure isolation mode is "none" */
		card->options.isolation = ISOLATION_MODE_NONE;
		break;
	}
	default:
	{
		/* this should never happen */
		QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
			"==UNKNOWN\n",
			card->gdev->dev.kobj.name,
			access_ctrl_req->subcmd_code,
			cmd->data.setadapterparms.hdr.return_code);

		/* ensure isolation mode is "none" */
		card->options.isolation = ISOLATION_MODE_NONE;
		break;
	}
	}
	qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4131
	return 0;
E
Einar Lueck 已提交
4132 4133 4134 4135 4136 4137 4138 4139 4140 4141
}

static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
		enum qeth_ipa_isolation_modes isolation)
{
	int rc;
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd *cmd;
	struct qeth_set_access_ctrl *access_ctrl_req;

C
Carsten Otte 已提交
4142
	QETH_CARD_TEXT(card, 4, "setacctl");
E
Einar Lueck 已提交
4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163

	QETH_DBF_TEXT_(SETUP, 2, "setacctl");
	QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);

	iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
				   sizeof(struct qeth_ipacmd_setadpparms_hdr) +
				   sizeof(struct qeth_set_access_ctrl));
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
	access_ctrl_req->subcmd_code = isolation;

	rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
			       NULL);
	QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
	return rc;
}

int qeth_set_access_ctrl_online(struct qeth_card *card)
{
	int rc = 0;

C
Carsten Otte 已提交
4164
	QETH_CARD_TEXT(card, 4, "setactlo");
E
Einar Lueck 已提交
4165

4166 4167 4168
	if ((card->info.type == QETH_CARD_TYPE_OSD ||
	     card->info.type == QETH_CARD_TYPE_OSX) &&
	     qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
E
Einar Lueck 已提交
4169 4170 4171 4172
		rc = qeth_setadpparms_set_access_ctrl(card,
			card->options.isolation);
		if (rc) {
			QETH_DBF_MESSAGE(3,
4173
				"IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
E
Einar Lueck 已提交
4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187
				card->gdev->dev.kobj.name,
				rc);
		}
	} else if (card->options.isolation != ISOLATION_MODE_NONE) {
		card->options.isolation = ISOLATION_MODE_NONE;

		dev_err(&card->gdev->dev, "Adapter does not "
			"support QDIO data connection isolation\n");
		rc = -EOPNOTSUPP;
	}
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);

F
Frank Blaschka 已提交
4188 4189 4190 4191
void qeth_tx_timeout(struct net_device *dev)
{
	struct qeth_card *card;

4192
	card = dev->ml_priv;
C
Carsten Otte 已提交
4193
	QETH_CARD_TEXT(card, 4, "txtimeo");
F
Frank Blaschka 已提交
4194 4195 4196 4197 4198 4199 4200
	card->stats.tx_errors++;
	qeth_schedule_recovery(card);
}
EXPORT_SYMBOL_GPL(qeth_tx_timeout);

int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
{
4201
	struct qeth_card *card = dev->ml_priv;
F
Frank Blaschka 已提交
4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271
	int rc = 0;

	switch (regnum) {
	case MII_BMCR: /* Basic mode control register */
		rc = BMCR_FULLDPLX;
		if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
		    (card->info.link_type != QETH_LINK_TYPE_OSN) &&
		    (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
			rc |= BMCR_SPEED100;
		break;
	case MII_BMSR: /* Basic mode status register */
		rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
		     BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
		     BMSR_100BASE4;
		break;
	case MII_PHYSID1: /* PHYS ID 1 */
		rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
		     dev->dev_addr[2];
		rc = (rc >> 5) & 0xFFFF;
		break;
	case MII_PHYSID2: /* PHYS ID 2 */
		rc = (dev->dev_addr[2] << 10) & 0xFFFF;
		break;
	case MII_ADVERTISE: /* Advertisement control reg */
		rc = ADVERTISE_ALL;
		break;
	case MII_LPA: /* Link partner ability reg */
		rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
		     LPA_100BASE4 | LPA_LPACK;
		break;
	case MII_EXPANSION: /* Expansion register */
		break;
	case MII_DCOUNTER: /* disconnect counter */
		break;
	case MII_FCSCOUNTER: /* false carrier counter */
		break;
	case MII_NWAYTEST: /* N-way auto-neg test register */
		break;
	case MII_RERRCOUNTER: /* rx error counter */
		rc = card->stats.rx_errors;
		break;
	case MII_SREVISION: /* silicon revision */
		break;
	case MII_RESV1: /* reserved 1 */
		break;
	case MII_LBRERROR: /* loopback, rx, bypass error */
		break;
	case MII_PHYADDR: /* physical address */
		break;
	case MII_RESV2: /* reserved 2 */
		break;
	case MII_TPISTATUS: /* TPI status for 10mbps */
		break;
	case MII_NCONFIG: /* network interface config */
		break;
	default:
		break;
	}
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_mdio_read);

static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
		struct qeth_cmd_buffer *iob, int len,
		int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
			unsigned long),
		void *reply_param)
{
	u16 s1, s2;

C
Carsten Otte 已提交
4272
	QETH_CARD_TEXT(card, 4, "sendsnmp");
F
Frank Blaschka 已提交
4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296

	memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
	memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
	       &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
	/* adjust PDU length fields in IPA_PDU_HEADER */
	s1 = (u32) IPA_PDU_HEADER_SIZE + len;
	s2 = (u32) len;
	memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
	memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
	memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
	memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
	return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
				      reply_cb, reply_param);
}

static int qeth_snmp_command_cb(struct qeth_card *card,
		struct qeth_reply *reply, unsigned long sdata)
{
	struct qeth_ipa_cmd *cmd;
	struct qeth_arp_query_info *qinfo;
	struct qeth_snmp_cmd *snmp;
	unsigned char *data;
	__u16 data_len;

C
Carsten Otte 已提交
4297
	QETH_CARD_TEXT(card, 3, "snpcmdcb");
F
Frank Blaschka 已提交
4298 4299 4300 4301 4302 4303 4304

	cmd = (struct qeth_ipa_cmd *) sdata;
	data = (unsigned char *)((char *)cmd - reply->offset);
	qinfo = (struct qeth_arp_query_info *) reply->param;
	snmp = &cmd->data.setadapterparms.data.snmp;

	if (cmd->hdr.return_code) {
C
Carsten Otte 已提交
4305
		QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
F
Frank Blaschka 已提交
4306 4307 4308 4309 4310
		return 0;
	}
	if (cmd->data.setadapterparms.hdr.return_code) {
		cmd->hdr.return_code =
			cmd->data.setadapterparms.hdr.return_code;
C
Carsten Otte 已提交
4311
		QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
F
Frank Blaschka 已提交
4312 4313 4314 4315 4316 4317 4318 4319 4320 4321
		return 0;
	}
	data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
	if (cmd->data.setadapterparms.hdr.seq_no == 1)
		data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
	else
		data_len -= (__u16)((char *)&snmp->request - (char *)cmd);

	/* check if there is enough room in userspace */
	if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
C
Carsten Otte 已提交
4322
		QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4323
		cmd->hdr.return_code = IPA_RC_ENOMEM;
F
Frank Blaschka 已提交
4324 4325
		return 0;
	}
C
Carsten Otte 已提交
4326
	QETH_CARD_TEXT_(card, 4, "snore%i",
F
Frank Blaschka 已提交
4327
		       cmd->data.setadapterparms.hdr.used_total);
C
Carsten Otte 已提交
4328
	QETH_CARD_TEXT_(card, 4, "sseqn%i",
F
Frank Blaschka 已提交
4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341
		cmd->data.setadapterparms.hdr.seq_no);
	/*copy entries to user buffer*/
	if (cmd->data.setadapterparms.hdr.seq_no == 1) {
		memcpy(qinfo->udata + qinfo->udata_offset,
		       (char *)snmp,
		       data_len + offsetof(struct qeth_snmp_cmd, data));
		qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
	} else {
		memcpy(qinfo->udata + qinfo->udata_offset,
		       (char *)&snmp->request, data_len);
	}
	qinfo->udata_offset += data_len;
	/* check if all replies received ... */
C
Carsten Otte 已提交
4342
		QETH_CARD_TEXT_(card, 4, "srtot%i",
F
Frank Blaschka 已提交
4343
			       cmd->data.setadapterparms.hdr.used_total);
C
Carsten Otte 已提交
4344
		QETH_CARD_TEXT_(card, 4, "srseq%i",
F
Frank Blaschka 已提交
4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360
			       cmd->data.setadapterparms.hdr.seq_no);
	if (cmd->data.setadapterparms.hdr.seq_no <
	    cmd->data.setadapterparms.hdr.used_total)
		return 1;
	return 0;
}

int qeth_snmp_command(struct qeth_card *card, char __user *udata)
{
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd *cmd;
	struct qeth_snmp_ureq *ureq;
	int req_len;
	struct qeth_arp_query_info qinfo = {0, };
	int rc = 0;

C
Carsten Otte 已提交
4361
	QETH_CARD_TEXT(card, 3, "snmpcmd");
F
Frank Blaschka 已提交
4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372

	if (card->info.guestlan)
		return -EOPNOTSUPP;

	if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
	    (!card->options.layer2)) {
		return -EOPNOTSUPP;
	}
	/* skip 4 bytes (data_len struct member) to get req_len */
	if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
		return -EFAULT;
4373 4374
	ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
	if (IS_ERR(ureq)) {
C
Carsten Otte 已提交
4375
		QETH_CARD_TEXT(card, 2, "snmpnome");
4376
		return PTR_ERR(ureq);
F
Frank Blaschka 已提交
4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392
	}
	qinfo.udata_len = ureq->hdr.data_len;
	qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
	if (!qinfo.udata) {
		kfree(ureq);
		return -ENOMEM;
	}
	qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);

	iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
				   QETH_SNMP_SETADP_CMDLENGTH + req_len);
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
	rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
				    qeth_snmp_command_cb, (void *)&qinfo);
	if (rc)
4393
		QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
F
Frank Blaschka 已提交
4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405
			   QETH_CARD_IFNAME(card), rc);
	else {
		if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
			rc = -EFAULT;
	}

	kfree(ureq);
	kfree(qinfo.udata);
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_snmp_command);

4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503
static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
		struct qeth_reply *reply, unsigned long data)
{
	struct qeth_ipa_cmd *cmd;
	struct qeth_qoat_priv *priv;
	char *resdata;
	int resdatalen;

	QETH_CARD_TEXT(card, 3, "qoatcb");

	cmd = (struct qeth_ipa_cmd *)data;
	priv = (struct qeth_qoat_priv *)reply->param;
	resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
	resdata = (char *)data + 28;

	if (resdatalen > (priv->buffer_len - priv->response_len)) {
		cmd->hdr.return_code = IPA_RC_FFFF;
		return 0;
	}

	memcpy((priv->buffer + priv->response_len), resdata,
		resdatalen);
	priv->response_len += resdatalen;

	if (cmd->data.setadapterparms.hdr.seq_no <
	    cmd->data.setadapterparms.hdr.used_total)
		return 1;
	return 0;
}

int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
{
	int rc = 0;
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd *cmd;
	struct qeth_query_oat *oat_req;
	struct qeth_query_oat_data oat_data;
	struct qeth_qoat_priv priv;
	void __user *tmp;

	QETH_CARD_TEXT(card, 3, "qoatcmd");

	if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
		rc = -EOPNOTSUPP;
		goto out;
	}

	if (copy_from_user(&oat_data, udata,
	    sizeof(struct qeth_query_oat_data))) {
			rc = -EFAULT;
			goto out;
	}

	priv.buffer_len = oat_data.buffer_len;
	priv.response_len = 0;
	priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
	if (!priv.buffer) {
		rc = -ENOMEM;
		goto out;
	}

	iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
				   sizeof(struct qeth_ipacmd_setadpparms_hdr) +
				   sizeof(struct qeth_query_oat));
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	oat_req = &cmd->data.setadapterparms.data.query_oat;
	oat_req->subcmd_code = oat_data.command;

	rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
			       &priv);
	if (!rc) {
		if (is_compat_task())
			tmp = compat_ptr(oat_data.ptr);
		else
			tmp = (void __user *)(unsigned long)oat_data.ptr;

		if (copy_to_user(tmp, priv.buffer,
		    priv.response_len)) {
			rc = -EFAULT;
			goto out_free;
		}

		oat_data.response_len = priv.response_len;

		if (copy_to_user(udata, &oat_data,
		    sizeof(struct qeth_query_oat_data)))
			rc = -EFAULT;
	} else
		if (rc == IPA_RC_FFFF)
			rc = -EFAULT;

out_free:
	kfree(priv.buffer);
out:
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_query_oat_command);

F
Frank Blaschka 已提交
4504 4505 4506 4507 4508 4509 4510 4511 4512 4513
static inline int qeth_get_qdio_q_format(struct qeth_card *card)
{
	switch (card->info.type) {
	case QETH_CARD_TYPE_IQD:
		return 2;
	default:
		return 0;
	}
}

4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540
static void qeth_determine_capabilities(struct qeth_card *card)
{
	int rc;
	int length;
	char *prcd;
	struct ccw_device *ddev;
	int ddev_offline = 0;

	QETH_DBF_TEXT(SETUP, 2, "detcapab");
	ddev = CARD_DDEV(card);
	if (!ddev->online) {
		ddev_offline = 1;
		rc = ccw_device_set_online(ddev);
		if (rc) {
			QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
			goto out;
		}
	}

	rc = qeth_read_conf_data(card, (void **) &prcd, &length);
	if (rc) {
		QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
			dev_name(&card->gdev->dev), rc);
		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
		goto out_offline;
	}
	qeth_configure_unitaddr(card, prcd);
4541 4542
	if (ddev_offline)
		qeth_configure_blkt_default(card, prcd);
4543 4544 4545 4546 4547 4548
	kfree(prcd);

	rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
	if (rc)
		QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);

4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562
	QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
	QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
	QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
	QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
	if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
	    ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
	    ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
		dev_info(&card->gdev->dev,
			"Completion Queueing supported\n");
	} else {
		card->options.cq = QETH_CQ_NOTAVAILABLE;
	}


4563 4564 4565 4566 4567 4568 4569
out_offline:
	if (ddev_offline == 1)
		ccw_device_set_offline(ddev);
out:
	return;
}

4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587
static inline void qeth_qdio_establish_cq(struct qeth_card *card,
	struct qdio_buffer **in_sbal_ptrs,
	void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
	int i;

	if (card->options.cq == QETH_CQ_ENABLED) {
		int offset = QDIO_MAX_BUFFERS_PER_Q *
			     (card->qdio.no_in_queues - 1);
		i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
		for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
			in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
				virt_to_phys(card->qdio.c_q->bufs[i].buffer);
		}

		queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
	}
}

F
Frank Blaschka 已提交
4588 4589 4590 4591 4592
static int qeth_qdio_establish(struct qeth_card *card)
{
	struct qdio_initialize init_data;
	char *qib_param_field;
	struct qdio_buffer **in_sbal_ptrs;
4593
	void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
F
Frank Blaschka 已提交
4594 4595 4596 4597
	struct qdio_buffer **out_sbal_ptrs;
	int i, j, k;
	int rc = 0;

4598
	QETH_DBF_TEXT(SETUP, 2, "qdioest");
F
Frank Blaschka 已提交
4599 4600 4601

	qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
			      GFP_KERNEL);
4602 4603 4604 4605
	if (!qib_param_field) {
		rc =  -ENOMEM;
		goto out_free_nothing;
	}
F
Frank Blaschka 已提交
4606 4607 4608 4609

	qeth_create_qib_param_field(card, qib_param_field);
	qeth_create_qib_param_field_blkt(card, qib_param_field);

4610
	in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4611
			       QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
F
Frank Blaschka 已提交
4612 4613
			       GFP_KERNEL);
	if (!in_sbal_ptrs) {
4614 4615
		rc = -ENOMEM;
		goto out_free_qib_param;
F
Frank Blaschka 已提交
4616
	}
4617
	for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
F
Frank Blaschka 已提交
4618 4619
		in_sbal_ptrs[i] = (struct qdio_buffer *)
			virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4620
	}
F
Frank Blaschka 已提交
4621

4622 4623
	queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
				   GFP_KERNEL);
4624 4625 4626 4627
	if (!queue_start_poll) {
		rc = -ENOMEM;
		goto out_free_in_sbals;
	}
4628
	for (i = 0; i < card->qdio.no_in_queues; ++i)
4629
		queue_start_poll[i] = card->discipline->start_poll;
4630 4631

	qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4632

F
Frank Blaschka 已提交
4633
	out_sbal_ptrs =
4634
		kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
F
Frank Blaschka 已提交
4635 4636
			sizeof(void *), GFP_KERNEL);
	if (!out_sbal_ptrs) {
4637 4638
		rc = -ENOMEM;
		goto out_free_queue_start_poll;
F
Frank Blaschka 已提交
4639 4640 4641 4642
	}
	for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
		for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
			out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
4643
				card->qdio.out_qs[i]->bufs[j]->buffer);
F
Frank Blaschka 已提交
4644 4645 4646 4647 4648 4649 4650
		}

	memset(&init_data, 0, sizeof(struct qdio_initialize));
	init_data.cdev                   = CARD_DDEV(card);
	init_data.q_format               = qeth_get_qdio_q_format(card);
	init_data.qib_param_field_format = 0;
	init_data.qib_param_field        = qib_param_field;
4651
	init_data.no_input_qs            = card->qdio.no_in_queues;
F
Frank Blaschka 已提交
4652
	init_data.no_output_qs           = card->qdio.no_out_queues;
4653 4654
	init_data.input_handler 	 = card->discipline->input_handler;
	init_data.output_handler	 = card->discipline->output_handler;
4655
	init_data.queue_start_poll_array = queue_start_poll;
F
Frank Blaschka 已提交
4656 4657 4658
	init_data.int_parm               = (unsigned long) card;
	init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
	init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
4659
	init_data.output_sbal_state_array = card->qdio.out_bufstates;
4660 4661
	init_data.scan_threshold =
		(card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
F
Frank Blaschka 已提交
4662 4663 4664

	if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
		QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
J
Jan Glauber 已提交
4665 4666 4667 4668 4669 4670 4671
		rc = qdio_allocate(&init_data);
		if (rc) {
			atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
			goto out;
		}
		rc = qdio_establish(&init_data);
		if (rc) {
F
Frank Blaschka 已提交
4672
			atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
J
Jan Glauber 已提交
4673 4674
			qdio_free(CARD_DDEV(card));
		}
F
Frank Blaschka 已提交
4675
	}
4676 4677 4678 4679 4680 4681 4682 4683 4684 4685 4686

	switch (card->options.cq) {
	case QETH_CQ_ENABLED:
		dev_info(&card->gdev->dev, "Completion Queue support enabled");
		break;
	case QETH_CQ_DISABLED:
		dev_info(&card->gdev->dev, "Completion Queue support disabled");
		break;
	default:
		break;
	}
J
Jan Glauber 已提交
4687
out:
F
Frank Blaschka 已提交
4688
	kfree(out_sbal_ptrs);
4689 4690 4691
out_free_queue_start_poll:
	kfree(queue_start_poll);
out_free_in_sbals:
F
Frank Blaschka 已提交
4692
	kfree(in_sbal_ptrs);
4693
out_free_qib_param:
F
Frank Blaschka 已提交
4694
	kfree(qib_param_field);
4695
out_free_nothing:
F
Frank Blaschka 已提交
4696 4697 4698 4699 4700 4701
	return rc;
}

static void qeth_core_free_card(struct qeth_card *card)
{

4702 4703
	QETH_DBF_TEXT(SETUP, 2, "freecrd");
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
F
Frank Blaschka 已提交
4704 4705 4706 4707 4708 4709
	qeth_clean_channel(&card->read);
	qeth_clean_channel(&card->write);
	if (card->dev)
		free_netdev(card->dev);
	kfree(card->ip_tbd_list);
	qeth_free_qdio_buffers(card);
4710
	unregister_service_level(&card->qeth_service_level);
F
Frank Blaschka 已提交
4711 4712 4713 4714
	kfree(card);
}

static struct ccw_device_id qeth_ids[] = {
4715 4716 4717 4718 4719 4720 4721 4722 4723 4724
	{CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
					.driver_info = QETH_CARD_TYPE_OSD},
	{CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
					.driver_info = QETH_CARD_TYPE_IQD},
	{CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
					.driver_info = QETH_CARD_TYPE_OSN},
	{CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
					.driver_info = QETH_CARD_TYPE_OSM},
	{CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
					.driver_info = QETH_CARD_TYPE_OSX},
F
Frank Blaschka 已提交
4725 4726 4727 4728 4729
	{},
};
MODULE_DEVICE_TABLE(ccw, qeth_ids);

static struct ccw_driver qeth_ccw_driver = {
4730
	.driver = {
S
Sebastian Ott 已提交
4731
		.owner = THIS_MODULE,
4732 4733
		.name = "qeth",
	},
F
Frank Blaschka 已提交
4734 4735 4736 4737 4738 4739 4740
	.ids = qeth_ids,
	.probe = ccwgroup_probe_ccwdev,
	.remove = ccwgroup_remove_ccwdev,
};

int qeth_core_hardsetup_card(struct qeth_card *card)
{
4741
	int retries = 0;
F
Frank Blaschka 已提交
4742 4743
	int rc;

4744
	QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
F
Frank Blaschka 已提交
4745
	atomic_set(&card->force_alloc_skb, 0);
4746
	qeth_update_from_chp_desc(card);
F
Frank Blaschka 已提交
4747
retry:
4748
	if (retries)
4749 4750
		QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
			dev_name(&card->gdev->dev));
4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762
	ccw_device_set_offline(CARD_DDEV(card));
	ccw_device_set_offline(CARD_WDEV(card));
	ccw_device_set_offline(CARD_RDEV(card));
	rc = ccw_device_set_online(CARD_RDEV(card));
	if (rc)
		goto retriable;
	rc = ccw_device_set_online(CARD_WDEV(card));
	if (rc)
		goto retriable;
	rc = ccw_device_set_online(CARD_DDEV(card));
	if (rc)
		goto retriable;
F
Frank Blaschka 已提交
4763
	rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4764
retriable:
F
Frank Blaschka 已提交
4765
	if (rc == -ERESTARTSYS) {
4766
		QETH_DBF_TEXT(SETUP, 2, "break1");
F
Frank Blaschka 已提交
4767 4768
		return rc;
	} else if (rc) {
4769
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4770
		if (++retries > 3)
F
Frank Blaschka 已提交
4771 4772 4773 4774
			goto out;
		else
			goto retry;
	}
4775
	qeth_determine_capabilities(card);
F
Frank Blaschka 已提交
4776 4777 4778 4779
	qeth_init_tokens(card);
	qeth_init_func_level(card);
	rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
	if (rc == -ERESTARTSYS) {
4780
		QETH_DBF_TEXT(SETUP, 2, "break2");
F
Frank Blaschka 已提交
4781 4782
		return rc;
	} else if (rc) {
4783
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
F
Frank Blaschka 已提交
4784 4785 4786 4787 4788 4789 4790
		if (--retries < 0)
			goto out;
		else
			goto retry;
	}
	rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
	if (rc == -ERESTARTSYS) {
4791
		QETH_DBF_TEXT(SETUP, 2, "break3");
F
Frank Blaschka 已提交
4792 4793
		return rc;
	} else if (rc) {
4794
		QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
F
Frank Blaschka 已提交
4795 4796 4797 4798 4799
		if (--retries < 0)
			goto out;
		else
			goto retry;
	}
4800
	card->read_or_write_problem = 0;
F
Frank Blaschka 已提交
4801 4802
	rc = qeth_mpc_initialize(card);
	if (rc) {
4803
		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
F
Frank Blaschka 已提交
4804 4805
		goto out;
	}
4806 4807 4808 4809 4810 4811 4812 4813 4814

	card->options.ipa4.supported_funcs = 0;
	card->options.adp.supported_funcs = 0;
	card->info.diagass_support = 0;
	qeth_query_ipassists(card, QETH_PROT_IPV4);
	if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
		qeth_query_setadapterparms(card);
	if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
		qeth_query_setdiagass(card);
F
Frank Blaschka 已提交
4815 4816
	return 0;
out:
4817 4818 4819 4820
	dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
		"an error on the device\n");
	QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
		dev_name(&card->gdev->dev), rc);
F
Frank Blaschka 已提交
4821 4822 4823 4824
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);

4825 4826
static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
		struct qdio_buffer_element *element,
F
Frank Blaschka 已提交
4827 4828 4829 4830
		struct sk_buff **pskb, int offset, int *pfrag, int data_len)
{
	struct page *page = virt_to_page(element->addr);
	if (*pskb == NULL) {
4831 4832 4833 4834 4835 4836 4837 4838 4839 4840
		if (qethbuffer->rx_skb) {
			/* only if qeth_card.options.cq == QETH_CQ_ENABLED */
			*pskb = qethbuffer->rx_skb;
			qethbuffer->rx_skb = NULL;
		} else {
			*pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
			if (!(*pskb))
				return -ENOMEM;
		}

F
Frank Blaschka 已提交
4841
		skb_reserve(*pskb, ETH_HLEN);
4842
		if (data_len <= QETH_RX_PULL_LEN) {
F
Frank Blaschka 已提交
4843 4844 4845 4846
			memcpy(skb_put(*pskb, data_len), element->addr + offset,
				data_len);
		} else {
			get_page(page);
4847 4848 4849 4850 4851 4852 4853 4854
			memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
			       element->addr + offset, QETH_RX_PULL_LEN);
			skb_fill_page_desc(*pskb, *pfrag, page,
				offset + QETH_RX_PULL_LEN,
				data_len - QETH_RX_PULL_LEN);
			(*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
			(*pskb)->len      += data_len - QETH_RX_PULL_LEN;
			(*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
F
Frank Blaschka 已提交
4855 4856 4857 4858 4859 4860 4861 4862 4863 4864
			(*pfrag)++;
		}
	} else {
		get_page(page);
		skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
		(*pskb)->data_len += data_len;
		(*pskb)->len      += data_len;
		(*pskb)->truesize += data_len;
		(*pfrag)++;
	}
4865 4866


F
Frank Blaschka 已提交
4867 4868 4869 4870
	return 0;
}

struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4871
		struct qeth_qdio_buffer *qethbuffer,
F
Frank Blaschka 已提交
4872 4873 4874 4875
		struct qdio_buffer_element **__element, int *__offset,
		struct qeth_hdr **hdr)
{
	struct qdio_buffer_element *element = *__element;
4876
	struct qdio_buffer *buffer = qethbuffer->buffer;
F
Frank Blaschka 已提交
4877 4878
	int offset = *__offset;
	struct sk_buff *skb = NULL;
4879
	int skb_len = 0;
F
Frank Blaschka 已提交
4880 4881 4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897
	void *data_ptr;
	int data_len;
	int headroom = 0;
	int use_rx_sg = 0;
	int frag = 0;

	/* qeth_hdr must not cross element boundaries */
	if (element->length < offset + sizeof(struct qeth_hdr)) {
		if (qeth_is_last_sbale(element))
			return NULL;
		element++;
		offset = 0;
		if (element->length < sizeof(struct qeth_hdr))
			return NULL;
	}
	*hdr = element->addr + offset;

	offset += sizeof(struct qeth_hdr);
4898 4899 4900 4901 4902
	switch ((*hdr)->hdr.l2.id) {
	case QETH_HEADER_TYPE_LAYER2:
		skb_len = (*hdr)->hdr.l2.pkt_length;
		break;
	case QETH_HEADER_TYPE_LAYER3:
F
Frank Blaschka 已提交
4903
		skb_len = (*hdr)->hdr.l3.length;
4904
		headroom = ETH_HLEN;
4905 4906 4907 4908 4909 4910 4911
		break;
	case QETH_HEADER_TYPE_OSN:
		skb_len = (*hdr)->hdr.osn.pdu_length;
		headroom = sizeof(struct qeth_hdr);
		break;
	default:
		break;
F
Frank Blaschka 已提交
4912 4913 4914 4915 4916
	}

	if (!skb_len)
		return NULL;

4917 4918 4919 4920
	if (((skb_len >= card->options.rx_sg_cb) &&
	     (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
	     (!atomic_read(&card->force_alloc_skb))) ||
	    (card->options.cq == QETH_CQ_ENABLED)) {
F
Frank Blaschka 已提交
4921 4922 4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933 4934
		use_rx_sg = 1;
	} else {
		skb = dev_alloc_skb(skb_len + headroom);
		if (!skb)
			goto no_mem;
		if (headroom)
			skb_reserve(skb, headroom);
	}

	data_ptr = element->addr + offset;
	while (skb_len) {
		data_len = min(skb_len, (int)(element->length - offset));
		if (data_len) {
			if (use_rx_sg) {
4935 4936
				if (qeth_create_skb_frag(qethbuffer, element,
				    &skb, offset, &frag, data_len))
F
Frank Blaschka 已提交
4937 4938 4939 4940 4941 4942 4943 4944 4945
					goto no_mem;
			} else {
				memcpy(skb_put(skb, data_len), data_ptr,
					data_len);
			}
		}
		skb_len -= data_len;
		if (skb_len) {
			if (qeth_is_last_sbale(element)) {
C
Carsten Otte 已提交
4946
				QETH_CARD_TEXT(card, 4, "unexeob");
C
Carsten Otte 已提交
4947
				QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
F
Frank Blaschka 已提交
4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964 4965 4966 4967
				dev_kfree_skb_any(skb);
				card->stats.rx_errors++;
				return NULL;
			}
			element++;
			offset = 0;
			data_ptr = element->addr;
		} else {
			offset += data_len;
		}
	}
	*__element = element;
	*__offset = offset;
	if (use_rx_sg && card->options.performance_stats) {
		card->perf_stats.sg_skbs_rx++;
		card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
	}
	return skb;
no_mem:
	if (net_ratelimit()) {
C
Carsten Otte 已提交
4968
		QETH_CARD_TEXT(card, 2, "noskbmem");
F
Frank Blaschka 已提交
4969 4970 4971 4972 4973 4974 4975 4976
	}
	card->stats.rx_dropped++;
	return NULL;
}
EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);

static void qeth_unregister_dbf_views(void)
{
4977 4978 4979 4980 4981
	int x;
	for (x = 0; x < QETH_DBF_INFOS; x++) {
		debug_unregister(qeth_dbf[x].id);
		qeth_dbf[x].id = NULL;
	}
F
Frank Blaschka 已提交
4982 4983
}

C
Carsten Otte 已提交
4984
void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
P
Peter Tiedemann 已提交
4985 4986
{
	char dbf_txt_buf[32];
4987
	va_list args;
P
Peter Tiedemann 已提交
4988

C
Carsten Otte 已提交
4989
	if (level > id->level)
P
Peter Tiedemann 已提交
4990
		return;
4991 4992 4993
	va_start(args, fmt);
	vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
	va_end(args);
C
Carsten Otte 已提交
4994
	debug_text_event(id, level, dbf_txt_buf);
P
Peter Tiedemann 已提交
4995 4996 4997
}
EXPORT_SYMBOL_GPL(qeth_dbf_longtext);

F
Frank Blaschka 已提交
4998 4999
static int qeth_register_dbf_views(void)
{
5000 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011 5012
	int ret;
	int x;

	for (x = 0; x < QETH_DBF_INFOS; x++) {
		/* register the areas */
		qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
						qeth_dbf[x].pages,
						qeth_dbf[x].areas,
						qeth_dbf[x].len);
		if (qeth_dbf[x].id == NULL) {
			qeth_unregister_dbf_views();
			return -ENOMEM;
		}
F
Frank Blaschka 已提交
5013

5014 5015 5016 5017 5018 5019
		/* register a view */
		ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
		if (ret) {
			qeth_unregister_dbf_views();
			return ret;
		}
F
Frank Blaschka 已提交
5020

5021 5022 5023
		/* set a passing level */
		debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
	}
F
Frank Blaschka 已提交
5024 5025 5026 5027 5028 5029 5030 5031

	return 0;
}

int qeth_core_load_discipline(struct qeth_card *card,
		enum qeth_discipline_id discipline)
{
	int rc = 0;
5032
	mutex_lock(&qeth_mod_mutex);
F
Frank Blaschka 已提交
5033 5034
	switch (discipline) {
	case QETH_DISCIPLINE_LAYER3:
5035 5036
		card->discipline = try_then_request_module(
			symbol_get(qeth_l3_discipline), "qeth_l3");
F
Frank Blaschka 已提交
5037 5038
		break;
	case QETH_DISCIPLINE_LAYER2:
5039 5040
		card->discipline = try_then_request_module(
			symbol_get(qeth_l2_discipline), "qeth_l2");
F
Frank Blaschka 已提交
5041 5042
		break;
	}
5043
	if (!card->discipline) {
5044 5045
		dev_err(&card->gdev->dev, "There is no kernel module to "
			"support discipline %d\n", discipline);
F
Frank Blaschka 已提交
5046 5047
		rc = -EINVAL;
	}
5048
	mutex_unlock(&qeth_mod_mutex);
F
Frank Blaschka 已提交
5049 5050 5051 5052 5053 5054
	return rc;
}

void qeth_core_free_discipline(struct qeth_card *card)
{
	if (card->options.layer2)
5055
		symbol_put(qeth_l2_discipline);
F
Frank Blaschka 已提交
5056
	else
5057 5058
		symbol_put(qeth_l3_discipline);
	card->discipline = NULL;
F
Frank Blaschka 已提交
5059 5060
}

5061 5062 5063 5064 5065 5066 5067 5068 5069
static const struct device_type qeth_generic_devtype = {
	.name = "qeth_generic",
	.groups = qeth_generic_attr_groups,
};
static const struct device_type qeth_osn_devtype = {
	.name = "qeth_osn",
	.groups = qeth_osn_attr_groups,
};

F
Frank Blaschka 已提交
5070 5071 5072 5073 5074 5075
static int qeth_core_probe_device(struct ccwgroup_device *gdev)
{
	struct qeth_card *card;
	struct device *dev;
	int rc;
	unsigned long flags;
5076
	char dbf_name[20];
F
Frank Blaschka 已提交
5077

5078
	QETH_DBF_TEXT(SETUP, 2, "probedev");
F
Frank Blaschka 已提交
5079 5080 5081 5082 5083

	dev = &gdev->dev;
	if (!get_device(dev))
		return -ENODEV;

5084
	QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
F
Frank Blaschka 已提交
5085 5086 5087

	card = qeth_alloc_card();
	if (!card) {
5088
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
F
Frank Blaschka 已提交
5089 5090 5091
		rc = -ENOMEM;
		goto err_dev;
	}
5092 5093 5094 5095 5096 5097 5098 5099 5100 5101 5102

	snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
		dev_name(&gdev->dev));
	card->debug = debug_register(dbf_name, 2, 1, 8);
	if (!card->debug) {
		QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
		rc = -ENOMEM;
		goto err_card;
	}
	debug_register_view(card->debug, &debug_hex_ascii_view);

F
Frank Blaschka 已提交
5103 5104 5105 5106 5107 5108 5109 5110 5111 5112 5113
	card->read.ccwdev  = gdev->cdev[0];
	card->write.ccwdev = gdev->cdev[1];
	card->data.ccwdev  = gdev->cdev[2];
	dev_set_drvdata(&gdev->dev, card);
	card->gdev = gdev;
	gdev->cdev[0]->handler = qeth_irq;
	gdev->cdev[1]->handler = qeth_irq;
	gdev->cdev[2]->handler = qeth_irq;

	rc = qeth_determine_card_type(card);
	if (rc) {
5114
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5115
		goto err_dbf;
F
Frank Blaschka 已提交
5116 5117 5118
	}
	rc = qeth_setup_card(card);
	if (rc) {
5119
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5120
		goto err_dbf;
F
Frank Blaschka 已提交
5121 5122
	}

5123
	if (card->info.type == QETH_CARD_TYPE_OSN)
5124
		gdev->dev.type = &qeth_osn_devtype;
5125
	else
5126 5127
		gdev->dev.type = &qeth_generic_devtype;

5128 5129 5130
	switch (card->info.type) {
	case QETH_CARD_TYPE_OSN:
	case QETH_CARD_TYPE_OSM:
F
Frank Blaschka 已提交
5131
		rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5132
		if (rc)
5133
			goto err_dbf;
5134
		rc = card->discipline->setup(card->gdev);
F
Frank Blaschka 已提交
5135
		if (rc)
5136 5137 5138 5139 5140
			goto err_disc;
	case QETH_CARD_TYPE_OSD:
	case QETH_CARD_TYPE_OSX:
	default:
		break;
F
Frank Blaschka 已提交
5141 5142 5143 5144 5145
	}

	write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
	list_add_tail(&card->list, &qeth_core_card_list.list);
	write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5146 5147

	qeth_determine_capabilities(card);
F
Frank Blaschka 已提交
5148 5149
	return 0;

5150 5151
err_disc:
	qeth_core_free_discipline(card);
5152 5153
err_dbf:
	debug_unregister(card->debug);
F
Frank Blaschka 已提交
5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165
err_card:
	qeth_core_free_card(card);
err_dev:
	put_device(dev);
	return rc;
}

static void qeth_core_remove_device(struct ccwgroup_device *gdev)
{
	unsigned long flags;
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);

5166
	QETH_DBF_TEXT(SETUP, 2, "removedv");
F
Frank Blaschka 已提交
5167

5168 5169
	if (card->discipline) {
		card->discipline->remove(gdev);
5170 5171 5172
		qeth_core_free_discipline(card);
	}

5173
	debug_unregister(card->debug);
F
Frank Blaschka 已提交
5174 5175 5176 5177 5178 5179 5180 5181 5182 5183 5184 5185 5186 5187 5188
	write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
	list_del(&card->list);
	write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
	qeth_core_free_card(card);
	dev_set_drvdata(&gdev->dev, NULL);
	put_device(&gdev->dev);
	return;
}

static int qeth_core_set_online(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
	int rc = 0;
	int def_discipline;

5189
	if (!card->discipline) {
F
Frank Blaschka 已提交
5190 5191 5192 5193 5194 5195 5196
		if (card->info.type == QETH_CARD_TYPE_IQD)
			def_discipline = QETH_DISCIPLINE_LAYER3;
		else
			def_discipline = QETH_DISCIPLINE_LAYER2;
		rc = qeth_core_load_discipline(card, def_discipline);
		if (rc)
			goto err;
5197
		rc = card->discipline->setup(card->gdev);
F
Frank Blaschka 已提交
5198 5199 5200
		if (rc)
			goto err;
	}
5201
	rc = card->discipline->set_online(gdev);
F
Frank Blaschka 已提交
5202 5203 5204 5205 5206 5207 5208
err:
	return rc;
}

static int qeth_core_set_offline(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5209
	return card->discipline->set_offline(gdev);
F
Frank Blaschka 已提交
5210 5211 5212 5213 5214
}

static void qeth_core_shutdown(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5215 5216
	if (card->discipline && card->discipline->shutdown)
		card->discipline->shutdown(gdev);
F
Frank Blaschka 已提交
5217 5218
}

5219 5220 5221
static int qeth_core_prepare(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5222 5223
	if (card->discipline && card->discipline->prepare)
		return card->discipline->prepare(gdev);
5224 5225 5226 5227 5228 5229
	return 0;
}

static void qeth_core_complete(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5230 5231
	if (card->discipline && card->discipline->complete)
		card->discipline->complete(gdev);
5232 5233 5234 5235 5236
}

static int qeth_core_freeze(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5237 5238
	if (card->discipline && card->discipline->freeze)
		return card->discipline->freeze(gdev);
5239 5240 5241 5242 5243 5244
	return 0;
}

static int qeth_core_thaw(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5245 5246
	if (card->discipline && card->discipline->thaw)
		return card->discipline->thaw(gdev);
5247 5248 5249 5250 5251 5252
	return 0;
}

static int qeth_core_restore(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5253 5254
	if (card->discipline && card->discipline->restore)
		return card->discipline->restore(gdev);
5255 5256 5257
	return 0;
}

F
Frank Blaschka 已提交
5258
static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5259 5260 5261 5262
	.driver = {
		.owner = THIS_MODULE,
		.name = "qeth",
	},
5263
	.setup = qeth_core_probe_device,
F
Frank Blaschka 已提交
5264 5265 5266 5267
	.remove = qeth_core_remove_device,
	.set_online = qeth_core_set_online,
	.set_offline = qeth_core_set_offline,
	.shutdown = qeth_core_shutdown,
5268 5269 5270 5271 5272
	.prepare = qeth_core_prepare,
	.complete = qeth_core_complete,
	.freeze = qeth_core_freeze,
	.thaw = qeth_core_thaw,
	.restore = qeth_core_restore,
F
Frank Blaschka 已提交
5273 5274
};

5275 5276
static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
					    const char *buf, size_t count)
F
Frank Blaschka 已提交
5277 5278 5279
{
	int err;

5280 5281 5282 5283 5284
	err = ccwgroup_create_dev(qeth_core_root_dev,
				  &qeth_core_ccwgroup_driver, 3, buf);

	return err ? err : count;
}
F
Frank Blaschka 已提交
5285 5286
static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);

5287 5288 5289 5290 5291 5292 5293 5294 5295 5296 5297 5298
static struct attribute *qeth_drv_attrs[] = {
	&driver_attr_group.attr,
	NULL,
};
static struct attribute_group qeth_drv_attr_group = {
	.attrs = qeth_drv_attrs,
};
static const struct attribute_group *qeth_drv_attr_groups[] = {
	&qeth_drv_attr_group,
	NULL,
};

F
Frank Blaschka 已提交
5299 5300 5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324
static struct {
	const char str[ETH_GSTRING_LEN];
} qeth_ethtool_stats_keys[] = {
/*  0 */{"rx skbs"},
	{"rx buffers"},
	{"tx skbs"},
	{"tx buffers"},
	{"tx skbs no packing"},
	{"tx buffers no packing"},
	{"tx skbs packing"},
	{"tx buffers packing"},
	{"tx sg skbs"},
	{"tx sg frags"},
/* 10 */{"rx sg skbs"},
	{"rx sg frags"},
	{"rx sg page allocs"},
	{"tx large kbytes"},
	{"tx large count"},
	{"tx pk state ch n->p"},
	{"tx pk state ch p->n"},
	{"tx pk watermark low"},
	{"tx pk watermark high"},
	{"queue 0 buffer usage"},
/* 20 */{"queue 1 buffer usage"},
	{"queue 2 buffer usage"},
	{"queue 3 buffer usage"},
5325 5326
	{"rx poll time"},
	{"rx poll count"},
F
Frank Blaschka 已提交
5327 5328 5329 5330 5331 5332 5333 5334
	{"rx do_QDIO time"},
	{"rx do_QDIO count"},
	{"tx handler time"},
	{"tx handler count"},
	{"tx time"},
/* 30 */{"tx count"},
	{"tx do_QDIO time"},
	{"tx do_QDIO count"},
5335
	{"tx csum"},
F
Frank Blaschka 已提交
5336
	{"tx lin"},
5337 5338
	{"cq handler count"},
	{"cq handler time"}
F
Frank Blaschka 已提交
5339 5340
};

5341
int qeth_core_get_sset_count(struct net_device *dev, int stringset)
F
Frank Blaschka 已提交
5342
{
5343 5344 5345 5346 5347 5348
	switch (stringset) {
	case ETH_SS_STATS:
		return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
	default:
		return -EINVAL;
	}
F
Frank Blaschka 已提交
5349
}
5350
EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
F
Frank Blaschka 已提交
5351 5352 5353 5354

void qeth_core_get_ethtool_stats(struct net_device *dev,
		struct ethtool_stats *stats, u64 *data)
{
5355
	struct qeth_card *card = dev->ml_priv;
F
Frank Blaschka 已提交
5356 5357 5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379 5380 5381 5382 5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393 5394
	data[0] = card->stats.rx_packets -
				card->perf_stats.initial_rx_packets;
	data[1] = card->perf_stats.bufs_rec;
	data[2] = card->stats.tx_packets -
				card->perf_stats.initial_tx_packets;
	data[3] = card->perf_stats.bufs_sent;
	data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
			- card->perf_stats.skbs_sent_pack;
	data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
	data[6] = card->perf_stats.skbs_sent_pack;
	data[7] = card->perf_stats.bufs_sent_pack;
	data[8] = card->perf_stats.sg_skbs_sent;
	data[9] = card->perf_stats.sg_frags_sent;
	data[10] = card->perf_stats.sg_skbs_rx;
	data[11] = card->perf_stats.sg_frags_rx;
	data[12] = card->perf_stats.sg_alloc_page_rx;
	data[13] = (card->perf_stats.large_send_bytes >> 10);
	data[14] = card->perf_stats.large_send_cnt;
	data[15] = card->perf_stats.sc_dp_p;
	data[16] = card->perf_stats.sc_p_dp;
	data[17] = QETH_LOW_WATERMARK_PACK;
	data[18] = QETH_HIGH_WATERMARK_PACK;
	data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
	data[20] = (card->qdio.no_out_queues > 1) ?
			atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
	data[21] = (card->qdio.no_out_queues > 2) ?
			atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
	data[22] = (card->qdio.no_out_queues > 3) ?
			atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
	data[23] = card->perf_stats.inbound_time;
	data[24] = card->perf_stats.inbound_cnt;
	data[25] = card->perf_stats.inbound_do_qdio_time;
	data[26] = card->perf_stats.inbound_do_qdio_cnt;
	data[27] = card->perf_stats.outbound_handler_time;
	data[28] = card->perf_stats.outbound_handler_cnt;
	data[29] = card->perf_stats.outbound_time;
	data[30] = card->perf_stats.outbound_cnt;
	data[31] = card->perf_stats.outbound_do_qdio_time;
	data[32] = card->perf_stats.outbound_do_qdio_cnt;
5395
	data[33] = card->perf_stats.tx_csum;
F
Frank Blaschka 已提交
5396
	data[34] = card->perf_stats.tx_lin;
5397 5398
	data[35] = card->perf_stats.cq_cnt;
	data[36] = card->perf_stats.cq_time;
F
Frank Blaschka 已提交
5399 5400 5401 5402 5403 5404 5405 5406 5407 5408 5409 5410 5411 5412 5413 5414 5415 5416 5417 5418
}
EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);

void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
{
	switch (stringset) {
	case ETH_SS_STATS:
		memcpy(data, &qeth_ethtool_stats_keys,
			sizeof(qeth_ethtool_stats_keys));
		break;
	default:
		WARN_ON(1);
		break;
	}
}
EXPORT_SYMBOL_GPL(qeth_core_get_strings);

void qeth_core_get_drvinfo(struct net_device *dev,
		struct ethtool_drvinfo *info)
{
5419
	struct qeth_card *card = dev->ml_priv;
F
Frank Blaschka 已提交
5420 5421 5422 5423 5424 5425 5426 5427 5428 5429 5430 5431 5432 5433
	if (card->options.layer2)
		strcpy(info->driver, "qeth_l2");
	else
		strcpy(info->driver, "qeth_l3");

	strcpy(info->version, "1.0");
	strcpy(info->fw_version, card->info.mcl_level);
	sprintf(info->bus_info, "%s/%s/%s",
			CARD_RDEV_ID(card),
			CARD_WDEV_ID(card),
			CARD_DDEV_ID(card));
}
EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);

5434 5435 5436
int qeth_core_ethtool_get_settings(struct net_device *netdev,
					struct ethtool_cmd *ecmd)
{
5437
	struct qeth_card *card = netdev->ml_priv;
5438 5439 5440 5441 5442 5443 5444 5445 5446 5447 5448 5449 5450 5451 5452 5453 5454 5455 5456 5457 5458 5459 5460 5461 5462 5463 5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474 5475 5476 5477 5478 5479 5480 5481 5482 5483 5484 5485 5486 5487 5488 5489 5490 5491 5492 5493 5494 5495 5496 5497 5498 5499 5500 5501 5502 5503 5504 5505 5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521 5522 5523
	enum qeth_link_types link_type;

	if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
		link_type = QETH_LINK_TYPE_10GBIT_ETH;
	else
		link_type = card->info.link_type;

	ecmd->transceiver = XCVR_INTERNAL;
	ecmd->supported = SUPPORTED_Autoneg;
	ecmd->advertising = ADVERTISED_Autoneg;
	ecmd->duplex = DUPLEX_FULL;
	ecmd->autoneg = AUTONEG_ENABLE;

	switch (link_type) {
	case QETH_LINK_TYPE_FAST_ETH:
	case QETH_LINK_TYPE_LANE_ETH100:
		ecmd->supported |= SUPPORTED_10baseT_Half |
					SUPPORTED_10baseT_Full |
					SUPPORTED_100baseT_Half |
					SUPPORTED_100baseT_Full |
					SUPPORTED_TP;
		ecmd->advertising |= ADVERTISED_10baseT_Half |
					ADVERTISED_10baseT_Full |
					ADVERTISED_100baseT_Half |
					ADVERTISED_100baseT_Full |
					ADVERTISED_TP;
		ecmd->speed = SPEED_100;
		ecmd->port = PORT_TP;
		break;

	case QETH_LINK_TYPE_GBIT_ETH:
	case QETH_LINK_TYPE_LANE_ETH1000:
		ecmd->supported |= SUPPORTED_10baseT_Half |
					SUPPORTED_10baseT_Full |
					SUPPORTED_100baseT_Half |
					SUPPORTED_100baseT_Full |
					SUPPORTED_1000baseT_Half |
					SUPPORTED_1000baseT_Full |
					SUPPORTED_FIBRE;
		ecmd->advertising |= ADVERTISED_10baseT_Half |
					ADVERTISED_10baseT_Full |
					ADVERTISED_100baseT_Half |
					ADVERTISED_100baseT_Full |
					ADVERTISED_1000baseT_Half |
					ADVERTISED_1000baseT_Full |
					ADVERTISED_FIBRE;
		ecmd->speed = SPEED_1000;
		ecmd->port = PORT_FIBRE;
		break;

	case QETH_LINK_TYPE_10GBIT_ETH:
		ecmd->supported |= SUPPORTED_10baseT_Half |
					SUPPORTED_10baseT_Full |
					SUPPORTED_100baseT_Half |
					SUPPORTED_100baseT_Full |
					SUPPORTED_1000baseT_Half |
					SUPPORTED_1000baseT_Full |
					SUPPORTED_10000baseT_Full |
					SUPPORTED_FIBRE;
		ecmd->advertising |= ADVERTISED_10baseT_Half |
					ADVERTISED_10baseT_Full |
					ADVERTISED_100baseT_Half |
					ADVERTISED_100baseT_Full |
					ADVERTISED_1000baseT_Half |
					ADVERTISED_1000baseT_Full |
					ADVERTISED_10000baseT_Full |
					ADVERTISED_FIBRE;
		ecmd->speed = SPEED_10000;
		ecmd->port = PORT_FIBRE;
		break;

	default:
		ecmd->supported |= SUPPORTED_10baseT_Half |
					SUPPORTED_10baseT_Full |
					SUPPORTED_TP;
		ecmd->advertising |= ADVERTISED_10baseT_Half |
					ADVERTISED_10baseT_Full |
					ADVERTISED_TP;
		ecmd->speed = SPEED_10;
		ecmd->port = PORT_TP;
	}

	return 0;
}
EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings);

F
Frank Blaschka 已提交
5524 5525 5526 5527
static int __init qeth_core_init(void)
{
	int rc;

5528
	pr_info("loading core functions\n");
F
Frank Blaschka 已提交
5529 5530
	INIT_LIST_HEAD(&qeth_core_card_list.list);
	rwlock_init(&qeth_core_card_list.rwlock);
5531
	mutex_init(&qeth_mod_mutex);
F
Frank Blaschka 已提交
5532 5533 5534 5535

	rc = qeth_register_dbf_views();
	if (rc)
		goto out_err;
M
Mark McLoughlin 已提交
5536
	qeth_core_root_dev = root_device_register("qeth");
F
Frank Blaschka 已提交
5537 5538 5539
	rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
	if (rc)
		goto register_err;
5540 5541 5542 5543 5544 5545
	qeth_core_header_cache = kmem_cache_create("qeth_hdr",
			sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
	if (!qeth_core_header_cache) {
		rc = -ENOMEM;
		goto slab_err;
	}
5546 5547 5548 5549 5550 5551
	qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
			sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
	if (!qeth_qdio_outbuf_cache) {
		rc = -ENOMEM;
		goto cqslab_err;
	}
5552 5553 5554 5555 5556 5557 5558
	rc = ccw_driver_register(&qeth_ccw_driver);
	if (rc)
		goto ccw_err;
	qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
	rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
	if (rc)
		goto ccwgroup_err;
5559

5560
	return 0;
5561 5562 5563 5564 5565

ccwgroup_err:
	ccw_driver_unregister(&qeth_ccw_driver);
ccw_err:
	kmem_cache_destroy(qeth_qdio_outbuf_cache);
5566 5567
cqslab_err:
	kmem_cache_destroy(qeth_core_header_cache);
5568
slab_err:
M
Mark McLoughlin 已提交
5569
	root_device_unregister(qeth_core_root_dev);
F
Frank Blaschka 已提交
5570 5571 5572
register_err:
	qeth_unregister_dbf_views();
out_err:
5573
	pr_err("Initializing the qeth device driver failed\n");
F
Frank Blaschka 已提交
5574 5575 5576 5577 5578 5579 5580
	return rc;
}

static void __exit qeth_core_exit(void)
{
	ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
	ccw_driver_unregister(&qeth_ccw_driver);
5581
	kmem_cache_destroy(qeth_qdio_outbuf_cache);
5582
	kmem_cache_destroy(qeth_core_header_cache);
5583
	root_device_unregister(qeth_core_root_dev);
F
Frank Blaschka 已提交
5584
	qeth_unregister_dbf_views();
5585
	pr_info("core functions removed\n");
F
Frank Blaschka 已提交
5586 5587 5588 5589 5590 5591 5592
}

module_init(qeth_core_init);
module_exit(qeth_core_exit);
MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
MODULE_DESCRIPTION("qeth core functions");
MODULE_LICENSE("GPL");