qeth_core_main.c 153.9 KB
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/*
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 *    Copyright IBM Corp. 2007, 2009
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 *    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>
 */

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#define KMSG_COMPONENT "qeth"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt

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#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>
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#include <linux/slab.h>
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#include <net/iucv/af_iucv.h>
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#include <asm/ebcdic.h>
#include <asm/io.h>
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#include <asm/sysinfo.h>
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#include <asm/compat.h>
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#include "qeth_core.h"

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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);
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struct qeth_card_list_struct qeth_core_card_list;
EXPORT_SYMBOL_GPL(qeth_core_card_list);
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struct kmem_cache *qeth_core_header_cache;
EXPORT_SYMBOL_GPL(qeth_core_header_cache);
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static struct kmem_cache *qeth_qdio_outbuf_cache;
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static struct device *qeth_core_root_dev;
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static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
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static struct lock_class_key qdio_out_skb_queue_key;
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static struct mutex qeth_mod_mutex;
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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 *);
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static void qeth_free_qdio_buffers(struct qeth_card *);
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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);
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static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
		struct qeth_qdio_out_buffer *buf,
		enum qeth_qdio_buffer_states newbufstate);
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static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
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static struct workqueue_struct *qeth_wq;

static void qeth_close_dev_handler(struct work_struct *work)
{
	struct qeth_card *card;

	card = container_of(work, struct qeth_card, close_dev_work);
	QETH_CARD_TEXT(card, 2, "cldevhdl");
	rtnl_lock();
	dev_close(card->dev);
	rtnl_unlock();
	ccwgroup_set_offline(card->gdev);
}

void qeth_close_dev(struct qeth_card *card)
{
	QETH_CARD_TEXT(card, 2, "cldevsubm");
	queue_work(qeth_wq, &card->close_dev_work);
}
EXPORT_SYMBOL_GPL(qeth_close_dev);

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static inline const char *qeth_get_cardname(struct qeth_card *card)
{
	if (card->info.guestlan) {
		switch (card->info.type) {
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		case QETH_CARD_TYPE_OSD:
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			return " Virtual NIC QDIO";
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		case QETH_CARD_TYPE_IQD:
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			return " Virtual NIC Hiper";
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		case QETH_CARD_TYPE_OSM:
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			return " Virtual NIC QDIO - OSM";
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		case QETH_CARD_TYPE_OSX:
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			return " Virtual NIC QDIO - OSX";
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		default:
			return " unknown";
		}
	} else {
		switch (card->info.type) {
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		case QETH_CARD_TYPE_OSD:
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			return " OSD Express";
		case QETH_CARD_TYPE_IQD:
			return " HiperSockets";
		case QETH_CARD_TYPE_OSN:
			return " OSN QDIO";
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		case QETH_CARD_TYPE_OSM:
			return " OSM QDIO";
		case QETH_CARD_TYPE_OSX:
			return " OSX QDIO";
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		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) {
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		case QETH_CARD_TYPE_OSD:
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			return "Virt.NIC QDIO";
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		case QETH_CARD_TYPE_IQD:
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			return "Virt.NIC Hiper";
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		case QETH_CARD_TYPE_OSM:
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			return "Virt.NIC OSM";
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		case QETH_CARD_TYPE_OSX:
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			return "Virt.NIC OSX";
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		default:
			return "unknown";
		}
	} else {
		switch (card->info.type) {
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		case QETH_CARD_TYPE_OSD:
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			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";
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		case QETH_CARD_TYPE_OSM:
			return "OSM_1000";
		case QETH_CARD_TYPE_OSX:
			return "OSX_10GIG";
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		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;

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	QETH_CARD_TEXT(card, 5, "clwrklst");
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	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;

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	QETH_CARD_TEXT(card, 5, "alocpool");
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	for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
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		pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
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		if (!pool_entry) {
			qeth_free_buffer_pool(card);
			return -ENOMEM;
		}
		for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
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			ptr = (void *) __get_free_page(GFP_KERNEL);
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			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)
{
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	QETH_CARD_TEXT(card, 2, "realcbp");
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	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);
}
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EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
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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;
}

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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;
}

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

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	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);
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				/* release here to avoid interleaving between
				   outbound tasklet and inbound tasklet
				   regarding notifications and lifecycle */
				qeth_release_skbs(c);

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				c = f->next_pending;
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				WARN_ON_ONCE(head->next_pending != f);
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				head->next_pending = c;
				kmem_cache_free(qeth_qdio_outbuf_cache, f);
			} else {
				head = c;
				c = c->next_pending;
			}

		}
	}
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	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");
	}
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}


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;
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	enum iucv_tx_notify notification;
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	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);

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	if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
			   QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
		notification = TX_NOTIFY_OK;
	} else {
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		WARN_ON_ONCE(atomic_read(&buffer->state) !=
							QETH_QDIO_BUF_PENDING);
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		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);

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	buffer->aob = NULL;
	qeth_clear_output_buffer(buffer->q, buffer,
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				 QETH_QDIO_BUF_HANDLED_DELAYED);

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	/* 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;
}


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

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	QETH_CARD_TEXT(card, 5, "issnxrd");
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	if (card->read.state != CH_STATE_UP)
		return -EIO;
	iob = qeth_get_buffer(&card->read);
	if (!iob) {
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		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));
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		return -ENOMEM;
	}
	qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
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	QETH_CARD_TEXT(card, 6, "noirqpnd");
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	rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
			      (addr_t) iob, 0, 0);
	if (rc) {
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		QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
			"rc=%i\n", dev_name(&card->gdev->dev), rc);
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		atomic_set(&card->read.irq_pending, 0);
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		card->read_or_write_problem = 1;
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		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;
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	}
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	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);
}

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static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
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		struct qeth_card *card)
{
	char *ipa_name;
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	int com = cmd->hdr.command;
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	ipa_name = qeth_get_ipa_cmd_name(com);
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	if (rc)
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		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));
541
	else
542 543 544
		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));
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}

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

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	QETH_CARD_TEXT(card, 5, "chkipad");
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	if (IS_IPA(iob->data)) {
		cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
		if (IS_IPA_REPLY(cmd)) {
556 557 558 559
			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)
560 561
				qeth_issue_ipa_msg(cmd,
						cmd->hdr.return_code, card);
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			return cmd;
		} else {
			switch (cmd->hdr.command) {
			case IPA_CMD_STOPLAN:
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				if (cmd->hdr.return_code ==
						IPA_RC_VEPA_TO_VEB_TRANSITION) {
					dev_err(&card->gdev->dev,
					   "Interface %s is down because the "
					   "adjacent port is no longer in "
					   "reflective relay mode\n",
					   QETH_CARD_IFNAME(card));
					qeth_close_dev(card);
				} else {
					dev_warn(&card->gdev->dev,
576 577
					   "The link for interface %s on CHPID"
					   " 0x%X failed\n",
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					   QETH_CARD_IFNAME(card),
					   card->info.chpid);
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					qeth_issue_ipa_msg(cmd,
						cmd->hdr.return_code, card);
				}
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				card->lan_online = 0;
				if (card->dev && netif_carrier_ok(card->dev))
					netif_carrier_off(card->dev);
				return NULL;
			case IPA_CMD_STARTLAN:
588 589 590
				dev_info(&card->gdev->dev,
					   "The link for %s on CHPID 0x%X has"
					   " been restored\n",
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					   QETH_CARD_IFNAME(card),
					   card->info.chpid);
				netif_carrier_on(card->dev);
594
				card->lan_online = 1;
595 596
				if (card->info.hwtrap)
					card->info.hwtrap = 2;
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				qeth_schedule_recovery(card);
				return NULL;
			case IPA_CMD_MODCCID:
				return cmd;
			case IPA_CMD_REGISTER_LOCAL_ADDR:
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				QETH_CARD_TEXT(card, 3, "irla");
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				break;
			case IPA_CMD_UNREGISTER_LOCAL_ADDR:
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				QETH_CARD_TEXT(card, 3, "urla");
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				break;
			default:
608
				QETH_DBF_MESSAGE(2, "Received data is IPA "
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					   "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;

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	QETH_CARD_TEXT(card, 4, "clipalst");
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	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);
634
	atomic_set(&card->write.irq_pending, 0);
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}
EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);

638 639
static int qeth_check_idx_response(struct qeth_card *card,
	unsigned char *buffer)
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{
	if (!buffer)
		return 0;

644
	QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
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	if ((buffer[2] & 0xc0) == 0xc0) {
646
		QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
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			   "with cause code 0x%02x%s\n",
			   buffer[4],
			   ((buffer[4] == 0x22) ?
			    " -- try another portname" : ""));
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		QETH_CARD_TEXT(card, 2, "ckidxres");
		QETH_CARD_TEXT(card, 2, " idxterm");
		QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
654 655 656 657 658 659
		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;
		}
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		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);
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	QETH_CARD_TEXT(card, 4, "setupccw");
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	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;

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	QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
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	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;

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	QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
F
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	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);
712
	wake_up(&channel->wait_q);
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}
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;
755
	int rc = 0;
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	card = CARD_FROM_CDEV(channel->ccwdev);
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	QETH_CARD_TEXT(card, 4, "sndctlcb");
759 760 761 762 763
	rc = qeth_check_idx_response(card, iob->data);
	switch (rc) {
	case 0:
		break;
	case -EIO:
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		qeth_clear_ipacmd_list(card);
765
		qeth_schedule_recovery(card);
766
		/* fall through */
767
	default:
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		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;

832
	QETH_DBF_TEXT(SETUP, 2, "setupch");
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Frank Blaschka 已提交
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	for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
834
		channel->iob[cnt].data =
835
			kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
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		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
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	QETH_CARD_TEXT(card, 2, "startrec");
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	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
936
	struct qeth_card *card;
F
Frank Blaschka 已提交
937 938

	sense = (char *) irb->ecw;
939 940
	cstat = irb->scsw.cmd.cstat;
	dstat = irb->scsw.cmd.dstat;
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Carsten Otte 已提交
941
	card = CARD_FROM_CDEV(cdev);
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	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
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		QETH_CARD_TEXT(card, 2, "CGENCHK");
947 948
		dev_warn(&cdev->dev, "The qeth device driver "
			"failed to recover an error on the device\n");
949
		QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
950
			dev_name(&cdev->dev), dstat, cstat);
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		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) {
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			QETH_CARD_TEXT(card, 2, "REVIND");
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			return 1;
		}
		if (sense[SENSE_COMMAND_REJECT_BYTE] &
		    SENSE_COMMAND_REJECT_FLAG) {
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			QETH_CARD_TEXT(card, 2, "CMDREJi");
965
			return 1;
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		}
		if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
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			QETH_CARD_TEXT(card, 2, "AFFE");
F
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			return 1;
		}
		if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
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			QETH_CARD_TEXT(card, 2, "ZEROSEN");
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			return 0;
		}
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		QETH_CARD_TEXT(card, 2, "DGENCHK");
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			return 1;
	}
	return 0;
}

static long __qeth_check_irb_error(struct ccw_device *cdev,
		unsigned long intparm, struct irb *irb)
{
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	struct qeth_card *card;

	card = CARD_FROM_CDEV(cdev);

F
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	if (!IS_ERR(irb))
		return 0;

	switch (PTR_ERR(irb)) {
	case -EIO:
993 994
		QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
			dev_name(&cdev->dev));
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		QETH_CARD_TEXT(card, 2, "ckirberr");
		QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
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		break;
	case -ETIMEDOUT:
999 1000
		dev_warn(&cdev->dev, "A hardware operation timed out"
			" on the device\n");
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		QETH_CARD_TEXT(card, 2, "ckirberr");
		QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
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		if (intparm == QETH_RCD_PARM) {
			if (card && (card->data.ccwdev == cdev)) {
				card->data.state = CH_STATE_DOWN;
				wake_up(&card->wait_q);
			}
		}
		break;
	default:
1011 1012
		QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
			dev_name(&cdev->dev), PTR_ERR(irb));
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		QETH_CARD_TEXT(card, 2, "ckirberr");
		QETH_CARD_TEXT(card, 2, "  rc???");
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	}
	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;
1032 1033
	cstat = irb->scsw.cmd.cstat;
	dstat = irb->scsw.cmd.dstat;
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	card = CARD_FROM_CDEV(cdev);
	if (!card)
		return;

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	QETH_CARD_TEXT(card, 5, "irq");

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	if (card->read.ccwdev == cdev) {
		channel = &card->read;
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		QETH_CARD_TEXT(card, 5, "read");
F
Frank Blaschka 已提交
1044 1045
	} else if (card->write.ccwdev == cdev) {
		channel = &card->write;
C
Carsten Otte 已提交
1046
		QETH_CARD_TEXT(card, 5, "write");
F
Frank Blaschka 已提交
1047 1048
	} else {
		channel = &card->data;
C
Carsten Otte 已提交
1049
		QETH_CARD_TEXT(card, 5, "data");
F
Frank Blaschka 已提交
1050 1051 1052
	}
	atomic_set(&channel->irq_pending, 0);

1053
	if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
F
Frank Blaschka 已提交
1054 1055
		channel->state = CH_STATE_STOPPED;

1056
	if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
F
Frank Blaschka 已提交
1057 1058 1059 1060 1061 1062 1063 1064
		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
1065
		QETH_CARD_TEXT(card, 6, "clrchpar");
F
Frank Blaschka 已提交
1066 1067 1068 1069
		/* we don't have to handle this further */
		intparm = 0;
	}
	if (intparm == QETH_HALT_CHANNEL_PARM) {
C
Carsten Otte 已提交
1070
		QETH_CARD_TEXT(card, 6, "hltchpar");
F
Frank Blaschka 已提交
1071 1072 1073 1074 1075 1076 1077
		/* 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) {
1078 1079 1080 1081 1082 1083
			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
1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094
			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) {
1095
			qeth_clear_ipacmd_list(card);
F
Frank Blaschka 已提交
1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128
			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;
}

1129
static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1130
		struct qeth_qdio_out_buffer *buf,
1131
		enum iucv_tx_notify notification)
F
Frank Blaschka 已提交
1132 1133 1134
{
	struct sk_buff *skb;

1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158
	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;
1159 1160 1161 1162 1163 1164 1165
	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 */
S
Stefan Raspl 已提交
1166
	WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
F
Frank Blaschka 已提交
1167

1168 1169
	skb = skb_dequeue(&buf->skb_list);
	while (skb) {
1170 1171
		QETH_CARD_TEXT(buf->q->card, 5, "skbr");
		QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1172 1173 1174 1175 1176 1177
		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);
			}
		}
1178 1179
		atomic_dec(&skb->users);
		dev_kfree_skb_any(skb);
F
Frank Blaschka 已提交
1180 1181
		skb = skb_dequeue(&buf->skb_list);
	}
1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196
}

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
1197
	for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1198 1199 1200 1201
		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
1202 1203
		buf->buffer->element[i].length = 0;
		buf->buffer->element[i].addr = NULL;
1204 1205
		buf->buffer->element[i].eflags = 0;
		buf->buffer->element[i].sflags = 0;
F
Frank Blaschka 已提交
1206
	}
1207 1208
	buf->buffer->element[15].eflags = 0;
	buf->buffer->element[15].sflags = 0;
F
Frank Blaschka 已提交
1209
	buf->next_element_to_fill = 0;
1210 1211 1212 1213 1214 1215 1216 1217 1218 1219
	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;
1220
		qeth_cleanup_handled_pending(q, j, 1);
1221 1222 1223 1224 1225 1226
		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
1227 1228 1229 1230
}

void qeth_clear_qdio_buffers(struct qeth_card *card)
{
1231
	int i;
F
Frank Blaschka 已提交
1232

C
Carsten Otte 已提交
1233
	QETH_CARD_TEXT(card, 2, "clearqdbf");
F
Frank Blaschka 已提交
1234
	/* clear outbound buffers to free skbs */
1235
	for (i = 0; i < card->qdio.no_out_queues; ++i) {
F
Frank Blaschka 已提交
1236
		if (card->qdio.out_qs[i]) {
1237
			qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
F
Frank Blaschka 已提交
1238
		}
1239
	}
F
Frank Blaschka 已提交
1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257
}
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)
{
1258
	int i, j;
F
Frank Blaschka 已提交
1259 1260 1261 1262

	if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
		QETH_QDIO_UNINITIALIZED)
		return;
1263 1264

	qeth_free_cq(card);
1265 1266
	cancel_delayed_work_sync(&card->buffer_reclaim_work);
	for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
1267
		dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
F
Frank Blaschka 已提交
1268 1269 1270 1271 1272 1273 1274
	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) {
1275
			qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
F
Frank Blaschka 已提交
1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286
			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;

1287
	QETH_DBF_TEXT(SETUP, 2, "freech");
F
Frank Blaschka 已提交
1288 1289 1290 1291
	for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
		kfree(channel->iob[cnt].data);
}

1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315
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
1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328
{
	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;

1329
	QETH_DBF_TEXT(SETUP, 2, "chp_desc");
F
Frank Blaschka 已提交
1330 1331

	ccwdev = card->data.ccwdev;
1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346
	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);
1347 1348
	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
1349 1350 1351 1352
}

static void qeth_init_qdio_info(struct qeth_card *card)
{
1353
	QETH_DBF_TEXT(SETUP, 4, "intqdinf");
F
Frank Blaschka 已提交
1354 1355 1356
	atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
	/* inbound */
	card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1357 1358 1359 1360
	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
1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373
	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
1374
	card->options.isolation = ISOLATION_MODE_NONE;
1375
	card->options.cq = QETH_CQ_DISABLED;
F
Frank Blaschka 已提交
1376 1377 1378 1379 1380 1381 1382 1383
}

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
1384
	QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
F
Frank Blaschka 已提交
1385 1386 1387 1388 1389 1390 1391 1392 1393 1394
			(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)
{
1395
	struct task_struct *ts;
F
Frank Blaschka 已提交
1396 1397
	struct qeth_card *card = container_of(work, struct qeth_card,
					kernel_thread_starter);
C
Carsten Otte 已提交
1398
	QETH_CARD_TEXT(card , 2, "strthrd");
F
Frank Blaschka 已提交
1399 1400 1401 1402

	if (card->read.state != CH_STATE_UP &&
	    card->write.state != CH_STATE_UP)
		return;
1403
	if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1404
		ts = kthread_run(card->discipline->recover, (void *)card,
F
Frank Blaschka 已提交
1405
				"qeth_recover");
1406 1407 1408 1409 1410 1411
		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
1412 1413 1414 1415 1416
}

static int qeth_setup_card(struct qeth_card *card)
{

1417 1418
	QETH_DBF_TEXT(SETUP, 2, "setupcrd");
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
F
Frank Blaschka 已提交
1419 1420 1421 1422 1423 1424

	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;
1425
	card->read_or_write_problem = 0;
F
Frank Blaschka 已提交
1426 1427 1428 1429 1430 1431
	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);
1432
	mutex_init(&card->conf_mutex);
1433
	mutex_init(&card->discipline_mutex);
F
Frank Blaschka 已提交
1434 1435 1436 1437 1438 1439 1440 1441
	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
1442
	/* initial options */
F
Frank Blaschka 已提交
1443 1444 1445 1446 1447 1448 1449 1450
	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);
1451
	INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
S
Stefan Raspl 已提交
1452
	INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
F
Frank Blaschka 已提交
1453 1454 1455
	return 0;
}

1456 1457 1458 1459
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);
1460 1461 1462
	if (card->info.mcl_level[0])
		seq_printf(m, "qeth: %s firmware level %s\n",
			CARD_BUS_ID(card), card->info.mcl_level);
1463 1464
}

F
Frank Blaschka 已提交
1465 1466 1467 1468
static struct qeth_card *qeth_alloc_card(void)
{
	struct qeth_card *card;

1469
	QETH_DBF_TEXT(SETUP, 2, "alloccrd");
F
Frank Blaschka 已提交
1470 1471
	card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
	if (!card)
1472
		goto out;
1473
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1474
	card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1475 1476 1477
	if (!card->ip_tbd_list) {
		QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
		goto out_card;
F
Frank Blaschka 已提交
1478
	}
1479 1480 1481 1482
	if (qeth_setup_channel(&card->read))
		goto out_ip;
	if (qeth_setup_channel(&card->write))
		goto out_channel;
F
Frank Blaschka 已提交
1483
	card->options.layer2 = -1;
1484 1485
	card->qeth_service_level.seq_print = qeth_core_sl_print;
	register_service_level(&card->qeth_service_level);
F
Frank Blaschka 已提交
1486
	return card;
1487 1488 1489 1490 1491 1492 1493 1494 1495

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
1496 1497 1498 1499 1500 1501
}

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

1502
	QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
F
Frank Blaschka 已提交
1503 1504 1505

	card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
	card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1506 1507 1508 1509 1510 1511 1512 1513
	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];
1514
			card->qdio.no_in_queues = 1;
1515 1516
			card->info.is_multicast_different =
				known_devices[i][QETH_MULTICAST_IND];
1517
			qeth_update_from_chp_desc(card);
F
Frank Blaschka 已提交
1518 1519 1520 1521 1522
			return 0;
		}
		i++;
	}
	card->info.type = QETH_CARD_TYPE_UNKNOWN;
1523 1524
	dev_err(&card->gdev->dev, "The adapter hardware is of an "
		"unknown type\n");
F
Frank Blaschka 已提交
1525 1526 1527 1528 1529 1530 1531 1532 1533 1534
	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
1535
	QETH_CARD_TEXT(card, 3, "clearch");
F
Frank Blaschka 已提交
1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558
	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
1559
	QETH_CARD_TEXT(card, 3, "haltch");
F
Frank Blaschka 已提交
1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578
	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
1579
	QETH_CARD_TEXT(card, 3, "haltchs");
F
Frank Blaschka 已提交
1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593
	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
1594
	QETH_CARD_TEXT(card, 3, "clearchs");
F
Frank Blaschka 已提交
1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608
	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
1609
	QETH_CARD_TEXT(card, 3, "clhacrd");
F
Frank Blaschka 已提交
1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621

	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
1622
	QETH_CARD_TEXT(card, 3, "qdioclr");
F
Frank Blaschka 已提交
1623 1624 1625 1626
	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
1627
			rc = qdio_shutdown(CARD_DDEV(card),
F
Frank Blaschka 已提交
1628 1629
				QDIO_FLAG_CLEANUP_USING_HALT);
		else
J
Jan Glauber 已提交
1630
			rc = qdio_shutdown(CARD_DDEV(card),
F
Frank Blaschka 已提交
1631 1632
				QDIO_FLAG_CLEANUP_USING_CLEAR);
		if (rc)
C
Carsten Otte 已提交
1633
			QETH_CARD_TEXT_(card, 3, "1err%d", rc);
J
Jan Glauber 已提交
1634
		qdio_free(CARD_DDEV(card));
F
Frank Blaschka 已提交
1635 1636 1637 1638 1639 1640 1641 1642 1643
		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
1644
		QETH_CARD_TEXT_(card, 3, "2err%d", rc);
F
Frank Blaschka 已提交
1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697
	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;
}

1698
static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
F
Frank Blaschka 已提交
1699
{
1700
	QETH_DBF_TEXT(SETUP, 2, "cfgunit");
F
Frank Blaschka 已提交
1701 1702 1703 1704 1705
	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']));
1706 1707 1708 1709 1710 1711
}

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

1712 1713
	if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
	    (prcd[76] == 0xF5 || prcd[76] == 0xF6)) {
1714 1715 1716 1717 1718 1719 1720 1721
		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
1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734
}

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)
{
1735 1736
	switch (card->info.type) {
	case QETH_CARD_TYPE_IQD:
1737
		card->info.func_level =	QETH_IDX_FUNC_LEVEL_IQD;
1738 1739
		break;
	case QETH_CARD_TYPE_OSD:
1740
	case QETH_CARD_TYPE_OSN:
1741 1742 1743 1744
		card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
		break;
	default:
		break;
F
Frank Blaschka 已提交
1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756
	}
}

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;

1757
	QETH_DBF_TEXT(SETUP, 2, "idxanswr");
F
Frank Blaschka 已提交
1758 1759 1760 1761 1762 1763 1764 1765 1766
	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);
1767
	QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
F
Frank Blaschka 已提交
1768 1769 1770 1771 1772 1773
	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) {
1774
		QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1775
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
F
Frank Blaschka 已提交
1776 1777 1778 1779 1780 1781 1782 1783 1784 1785
		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;
1786
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
F
Frank Blaschka 已提交
1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802
		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
1803
	struct ccw_dev_id temp_devid;
F
Frank Blaschka 已提交
1804 1805 1806

	card = CARD_FROM_CDEV(channel->ccwdev);

1807
	QETH_DBF_TEXT(SETUP, 2, "idxactch");
F
Frank Blaschka 已提交
1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829

	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
1830 1831
	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
1832 1833 1834 1835 1836
	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);
1837
	QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
F
Frank Blaschka 已提交
1838 1839 1840 1841 1842 1843
	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) {
1844 1845
		QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
			rc);
1846
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
1847 1848 1849 1850 1851 1852 1853 1854 1855
		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) {
1856 1857 1858 1859
		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));
1860
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
F
Frank Blaschka 已提交
1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881
		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;

1882
	QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
F
Frank Blaschka 已提交
1883 1884 1885 1886 1887 1888 1889 1890

	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))) {
1891
		if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1892 1893 1894
			dev_err(&card->write.ccwdev->dev,
				"The adapter is used exclusively by another "
				"host\n");
F
Frank Blaschka 已提交
1895
		else
1896 1897 1898
			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
1899 1900 1901 1902
		goto out;
	}
	memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
	if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1903 1904 1905 1906
		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
1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919
		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;

1920
	QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
F
Frank Blaschka 已提交
1921 1922 1923 1924 1925 1926
	if (channel->state == CH_STATE_DOWN) {
		channel->state = CH_STATE_ACTIVATING;
		goto out;
	}

	card = CARD_FROM_CDEV(channel->ccwdev);
1927
	if (qeth_check_idx_response(card, iob->data))
F
Frank Blaschka 已提交
1928 1929 1930
			goto out;

	if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1931 1932
		switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
		case QETH_IDX_ACT_ERR_EXCL:
1933 1934 1935
			dev_err(&card->write.ccwdev->dev,
				"The adapter is used exclusively by another "
				"host\n");
1936 1937
			break;
		case QETH_IDX_ACT_ERR_AUTH:
1938
		case QETH_IDX_ACT_ERR_AUTH_USER:
1939 1940
			dev_err(&card->read.ccwdev->dev,
				"Setting the device online failed because of "
1941
				"insufficient authorization\n");
1942 1943
			break;
		default:
1944 1945 1946
			QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
				" negative reply\n",
				dev_name(&card->read.ccwdev->dev));
1947
		}
1948 1949
		QETH_CARD_TEXT_(card, 2, "idxread%c",
			QETH_IDX_ACT_CAUSE_CODE(iob->data));
F
Frank Blaschka 已提交
1950 1951 1952 1953
		goto out;
	}

/**
1954 1955 1956
 *  * temporary fix for microcode bug
 *   * to revert it,replace OR by AND
 *    */
F
Frank Blaschka 已提交
1957
	if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1958
	     (card->info.type == QETH_CARD_TYPE_OSD))
F
Frank Blaschka 已提交
1959 1960 1961 1962
		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)) {
1963 1964 1965 1966
		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
1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992
		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);
1993
	QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
F
Frank Blaschka 已提交
1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005
}
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;
2006
	unsigned long timeout, event_timeout;
2007
	struct qeth_ipa_cmd *cmd;
F
Frank Blaschka 已提交
2008

C
Carsten Otte 已提交
2009
	QETH_CARD_TEXT(card, 2, "sendctl");
F
Frank Blaschka 已提交
2010

2011 2012 2013 2014
	if (card->read_or_write_problem) {
		qeth_release_buffer(iob->channel, iob);
		return -EIO;
	}
F
Frank Blaschka 已提交
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028
	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);
2029
	QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
F
Frank Blaschka 已提交
2030 2031 2032 2033 2034

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

	if (IS_IPA(iob->data))
2035
		event_timeout = QETH_IPA_TIMEOUT;
F
Frank Blaschka 已提交
2036
	else
2037 2038
		event_timeout = QETH_TIMEOUT;
	timeout = jiffies + event_timeout;
F
Frank Blaschka 已提交
2039

C
Carsten Otte 已提交
2040
	QETH_CARD_TEXT(card, 6, "noirqpnd");
F
Frank Blaschka 已提交
2041 2042 2043 2044 2045
	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) {
2046 2047 2048
		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
2049
		QETH_CARD_TEXT_(card, 2, " err%d", rc);
F
Frank Blaschka 已提交
2050 2051 2052 2053 2054 2055 2056 2057 2058
		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;
	}
2059 2060 2061 2062 2063 2064 2065

	/* 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,
2066
		    atomic_read(&reply->received), event_timeout))
2067 2068 2069 2070 2071 2072
			goto time_err;
	} else {
		while (!atomic_read(&reply->received)) {
			if (time_after(jiffies, timeout))
				goto time_err;
			cpu_relax();
2073
		}
2074 2075
	}

2076 2077
	if (reply->rc == -EIO)
		goto error;
2078 2079 2080 2081 2082
	rc = reply->rc;
	qeth_put_reply(reply);
	return rc;

time_err:
2083
	reply->rc = -ETIME;
2084 2085 2086 2087
	spin_lock_irqsave(&reply->card->lock, flags);
	list_del_init(&reply->list);
	spin_unlock_irqrestore(&reply->card->lock, flags);
	atomic_inc(&reply->received);
2088
error:
2089 2090 2091
	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
2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102
	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;

2103
	QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
F
Frank Blaschka 已提交
2104 2105 2106 2107 2108

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.cm_filter_r,
	       QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
2109
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
2110 2111 2112 2113 2114 2115 2116 2117
	return 0;
}

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

2118
	QETH_DBF_TEXT(SETUP, 2, "cmenable");
F
Frank Blaschka 已提交
2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137

	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;

2138
	QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
F
Frank Blaschka 已提交
2139 2140 2141 2142 2143

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.cm_connection_r,
	       QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
2144
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
2145 2146 2147 2148 2149 2150 2151 2152
	return 0;
}

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

2153
	QETH_DBF_TEXT(SETUP, 2, "cmsetup");
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

	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;
2176
	case QETH_CARD_TYPE_OSD:
F
Frank Blaschka 已提交
2177 2178 2179 2180 2181 2182 2183
		switch (card->info.link_type) {
		case QETH_LINK_TYPE_HSTR:
		case QETH_LINK_TYPE_LANE_TR:
			return 2000;
		default:
			return 1492;
		}
2184 2185 2186
	case QETH_CARD_TYPE_OSM:
	case QETH_CARD_TYPE_OSX:
		return 1492;
F
Frank Blaschka 已提交
2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210
	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) {
2211 2212 2213
	case QETH_CARD_TYPE_OSD:
	case QETH_CARD_TYPE_OSM:
	case QETH_CARD_TYPE_OSX:
F
Frank Blaschka 已提交
2214 2215
	case QETH_CARD_TYPE_IQD:
		return ((mtu >= 576) &&
2216
			(mtu <= card->info.max_mtu));
F
Frank Blaschka 已提交
2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232
	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;

2233
	QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
F
Frank Blaschka 已提交
2234 2235 2236 2237 2238

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.ulp_filter_r,
	       QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
2239
	if (card->info.type == QETH_CARD_TYPE_IQD) {
F
Frank Blaschka 已提交
2240 2241 2242 2243
		memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
		mtu = qeth_get_mtu_outof_framesize(framesize);
		if (!mtu) {
			iob->rc = -EINVAL;
2244
			QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
2245 2246
			return 0;
		}
2247 2248 2249 2250 2251 2252 2253 2254
		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
2255
		card->info.initial_mtu = mtu;
2256
		card->info.max_mtu = mtu;
F
Frank Blaschka 已提交
2257 2258 2259
		card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
	} else {
		card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
2260 2261
		card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
			iob->data);
F
Frank Blaschka 已提交
2262 2263 2264 2265 2266 2267 2268 2269 2270 2271
		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;
2272
	QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2273
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
2274 2275 2276 2277 2278 2279 2280 2281 2282 2283
	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*/
2284
	QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
F
Frank Blaschka 已提交
2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316

	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;

2317
	QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
F
Frank Blaschka 已提交
2318 2319 2320 2321 2322

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.ulp_connection_r,
	       QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
2323 2324 2325 2326 2327
	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");
2328
		iob->rc = -EMLINK;
2329
	}
2330
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
S
Stefan Raspl 已提交
2331
	return 0;
F
Frank Blaschka 已提交
2332 2333 2334 2335 2336 2337 2338 2339 2340
}

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

2341
	QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
F
Frank Blaschka 已提交
2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361

	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;
}

2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392
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
2393 2394 2395 2396
static int qeth_alloc_qdio_buffers(struct qeth_card *card)
{
	int i, j;

2397
	QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
F
Frank Blaschka 已提交
2398 2399 2400 2401 2402

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

2403
	card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2404
				   GFP_KERNEL);
F
Frank Blaschka 已提交
2405 2406
	if (!card->qdio.in_q)
		goto out_nomem;
2407 2408
	QETH_DBF_TEXT(SETUP, 2, "inq");
	QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
F
Frank Blaschka 已提交
2409 2410
	memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
	/* give inbound qeth_qdio_buffers their qdio_buffers */
2411
	for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
F
Frank Blaschka 已提交
2412 2413
		card->qdio.in_q->bufs[i].buffer =
			&card->qdio.in_q->qdio_bufs[i];
2414 2415
		card->qdio.in_q->bufs[i].rx_skb = NULL;
	}
F
Frank Blaschka 已提交
2416 2417 2418
	/* inbound buffer pool */
	if (qeth_alloc_buffer_pool(card))
		goto out_freeinq;
2419

F
Frank Blaschka 已提交
2420 2421
	/* outbound */
	card->qdio.out_qs =
2422
		kzalloc(card->qdio.no_out_queues *
F
Frank Blaschka 已提交
2423 2424 2425 2426
			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) {
2427
		card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2428
					       GFP_KERNEL);
F
Frank Blaschka 已提交
2429 2430
		if (!card->qdio.out_qs[i])
			goto out_freeoutq;
2431 2432
		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
2433 2434 2435
		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) {
S
Stefan Raspl 已提交
2436
			WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2437 2438
			if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
				goto out_freeoutqbufs;
F
Frank Blaschka 已提交
2439 2440
		}
	}
2441 2442 2443 2444 2445

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

F
Frank Blaschka 已提交
2446 2447
	return 0;

2448 2449 2450 2451 2452 2453 2454
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
2455
out_freeoutq:
2456
	while (i > 0) {
F
Frank Blaschka 已提交
2457
		kfree(card->qdio.out_qs[--i]);
2458 2459
		qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
	}
F
Frank Blaschka 已提交
2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499
	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)
{
2500
	QETH_DBF_TEXT(SETUP, 3, "qdioact");
J
Jan Glauber 已提交
2501
	return qdio_activate(CARD_DDEV(card));
F
Frank Blaschka 已提交
2502 2503 2504 2505 2506 2507 2508
}

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

2509
	QETH_DBF_TEXT(SETUP, 2, "dmact");
F
Frank Blaschka 已提交
2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525

	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;

2526
	QETH_DBF_TEXT(SETUP, 2, "mpcinit");
F
Frank Blaschka 已提交
2527 2528 2529

	rc = qeth_issue_next_read(card);
	if (rc) {
2530
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
2531 2532 2533 2534
		return rc;
	}
	rc = qeth_cm_enable(card);
	if (rc) {
2535
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
F
Frank Blaschka 已提交
2536 2537 2538 2539
		goto out_qdio;
	}
	rc = qeth_cm_setup(card);
	if (rc) {
2540
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
F
Frank Blaschka 已提交
2541 2542 2543 2544
		goto out_qdio;
	}
	rc = qeth_ulp_enable(card);
	if (rc) {
2545
		QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
F
Frank Blaschka 已提交
2546 2547 2548 2549
		goto out_qdio;
	}
	rc = qeth_ulp_setup(card);
	if (rc) {
2550
		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
F
Frank Blaschka 已提交
2551 2552 2553 2554
		goto out_qdio;
	}
	rc = qeth_alloc_qdio_buffers(card);
	if (rc) {
2555
		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
F
Frank Blaschka 已提交
2556 2557 2558 2559
		goto out_qdio;
	}
	rc = qeth_qdio_establish(card);
	if (rc) {
2560
		QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
F
Frank Blaschka 已提交
2561 2562 2563 2564 2565
		qeth_free_qdio_buffers(card);
		goto out_qdio;
	}
	rc = qeth_qdio_activate(card);
	if (rc) {
2566
		QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
F
Frank Blaschka 已提交
2567 2568 2569 2570
		goto out_qdio;
	}
	rc = qeth_dm_act(card);
	if (rc) {
2571
		QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
F
Frank Blaschka 已提交
2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590
		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;
2591
	dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
F
Frank Blaschka 已提交
2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604
	       "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])
2605
		dev_info(&card->gdev->dev, "Device is a%s "
F
Frank Blaschka 已提交
2606 2607 2608 2609 2610 2611 2612 2613
		       "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
2614
		dev_info(&card->gdev->dev, "Device is a%s "
F
Frank Blaschka 已提交
2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625
		       "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) {
2626 2627 2628
	case QETH_CARD_TYPE_OSD:
	case QETH_CARD_TYPE_OSM:
	case QETH_CARD_TYPE_OSX:
F
Frank Blaschka 已提交
2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642
		/* 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:
2643 2644
		if ((card->info.guestlan) ||
		    (card->info.mcl_level[0] & 0x80)) {
F
Frank Blaschka 已提交
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
			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
2670
	QETH_CARD_TEXT(card, 5, "inwrklst");
F
Frank Blaschka 已提交
2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708

	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) {
2709
			page = alloc_page(GFP_ATOMIC);
F
Frank Blaschka 已提交
2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729
			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;

2730 2731 2732 2733 2734 2735
	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
2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751
	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)
2752
			buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
F
Frank Blaschka 已提交
2753
		else
2754 2755
			buf->buffer->element[i].eflags = 0;
		buf->buffer->element[i].sflags = 0;
F
Frank Blaschka 已提交
2756 2757 2758 2759 2760 2761 2762 2763 2764
	}
	return 0;
}

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

2765
	QETH_DBF_TEXT(SETUP, 2, "initqdqs");
F
Frank Blaschka 已提交
2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776

	/* 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
2777
		     card->qdio.in_buf_pool.buf_count - 1);
F
Frank Blaschka 已提交
2778
	if (rc) {
2779
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
2780 2781
		return rc;
	}
2782 2783 2784 2785 2786 2787 2788

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

F
Frank Blaschka 已提交
2789 2790 2791 2792 2793 2794
	/* 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],
2795 2796
					card->qdio.out_qs[i]->bufs[j],
					QETH_QDIO_BUF_EMPTY);
F
Frank Blaschka 已提交
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 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871
		}
		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
2872
	QETH_CARD_TEXT(card, 4, "sendipa");
F
Frank Blaschka 已提交
2873 2874 2875 2876 2877 2878 2879 2880 2881

	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);
2882 2883
	rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
						iob, reply_cb, reply_param);
2884 2885 2886 2887
	if (rc == -ETIME) {
		qeth_clear_ipacmd_list(card);
		qeth_schedule_recovery(card);
	}
F
Frank Blaschka 已提交
2888 2889 2890 2891 2892 2893 2894
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);

int qeth_send_startlan(struct qeth_card *card)
{
	int rc;
2895
	struct qeth_cmd_buffer *iob;
F
Frank Blaschka 已提交
2896

2897
	QETH_DBF_TEXT(SETUP, 2, "strtlan");
F
Frank Blaschka 已提交
2898

2899 2900
	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
2901 2902 2903 2904
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_startlan);

S
Stefan Raspl 已提交
2905
static int qeth_default_setadapterparms_cb(struct qeth_card *card,
F
Frank Blaschka 已提交
2906 2907 2908 2909
		struct qeth_reply *reply, unsigned long data)
{
	struct qeth_ipa_cmd *cmd;

C
Carsten Otte 已提交
2910
	QETH_CARD_TEXT(card, 4, "defadpcb");
F
Frank Blaschka 已提交
2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923

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

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
2924
	QETH_CARD_TEXT(card, 3, "quyadpcb");
F
Frank Blaschka 已提交
2925 2926

	cmd = (struct qeth_ipa_cmd *) data;
2927
	if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
F
Frank Blaschka 已提交
2928 2929
		card->info.link_type =
		      cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2930 2931
		QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
	}
F
Frank Blaschka 已提交
2932 2933 2934 2935 2936
	card->options.adp.supported_funcs =
		cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
	return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
}

S
Stefan Raspl 已提交
2937
static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
F
Frank Blaschka 已提交
2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958
		__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;
}

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

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2959
	QETH_CARD_TEXT(card, 3, "queryadp");
F
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2960 2961 2962 2963 2964 2965 2966
	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);

2967 2968 2969 2970 2971 2972 2973 2974
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;
2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992

	switch (cmd->hdr.return_code) {
	case IPA_RC_NOTSUPP:
	case IPA_RC_L2_UNSUPPORTED_CMD:
		QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
		card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
		card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
		return -0;
	default:
		if (cmd->hdr.return_code) {
			QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
						"rc=%d\n",
						dev_name(&card->gdev->dev),
						cmd->hdr.return_code);
			return 0;
		}
	}

2993 2994 2995
	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;
2996
	} else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
2997 2998
		card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
		card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
2999 3000 3001
	} else
		QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
					"\n", dev_name(&card->gdev->dev));
3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 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
	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;
3051
	int level;
3052 3053 3054 3055 3056 3057 3058

	tid->chpid = card->info.chpid;
	ccw_device_get_id(CARD_RDEV(card), &ccwid);
	tid->ssid = ccwid.ssid;
	tid->devno = ccwid.devno;
	if (!info)
		return;
3059 3060
	level = stsi(NULL, 0, 0, 0);
	if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3061
		tid->lparnr = info222->lpar_number;
3062
	if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112
		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);

3113 3114
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
3115
{
J
Jan Glauber 已提交
3116
	if (qdio_error) {
C
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3117
		QETH_CARD_TEXT(card, 2, dbftext);
C
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3118
		QETH_CARD_TEXT_(card, 2, " F15=%02X",
3119
			       buf->element[15].sflags);
C
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3120
		QETH_CARD_TEXT_(card, 2, " F14=%02X",
3121
			       buf->element[14].sflags);
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3122
		QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3123
		if ((buf->element[15].sflags) == 0x12) {
3124 3125 3126 3127
			card->stats.rx_dropped++;
			return 0;
		} else
			return 1;
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3128 3129 3130 3131 3132
	}
	return 0;
}
EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);

3133 3134 3135 3136 3137 3138 3139 3140 3141
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);
}

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3142 3143 3144
void qeth_queue_input_buffer(struct qeth_card *card, int index)
{
	struct qeth_qdio_q *queue = card->qdio.in_q;
3145
	struct list_head *lh;
F
Frank Blaschka 已提交
3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176
	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);
		}

3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190
		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;
		}

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Frank Blaschka 已提交
3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202
		/*
		 * 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();
		}
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3203 3204
		rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
			     queue->next_buf_to_init, count);
F
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3205 3206 3207 3208 3209
		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) {
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3210
			QETH_CARD_TEXT(card, 2, "qinberr");
F
Frank Blaschka 已提交
3211 3212 3213 3214 3215 3216 3217 3218
		}
		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
3219
		struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
F
Frank Blaschka 已提交
3220
{
3221
	int sbalf15 = buffer->buffer->element[15].sflags;
F
Frank Blaschka 已提交
3222

C
Carsten Otte 已提交
3223
	QETH_CARD_TEXT(card, 6, "hdsnderr");
3224 3225 3226 3227 3228 3229 3230
	if (card->info.type == QETH_CARD_TYPE_IQD) {
		if (sbalf15 == 0) {
			qdio_err = 0;
		} else {
			qdio_err = 1;
		}
	}
3231
	qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3232 3233

	if (!qdio_err)
F
Frank Blaschka 已提交
3234
		return QETH_SEND_ERROR_NONE;
3235 3236 3237 3238

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

C
Carsten Otte 已提交
3239 3240
	QETH_CARD_TEXT(card, 1, "lnkfail");
	QETH_CARD_TEXT_(card, 1, "%04x %02x",
3241 3242
		       (u16)qdio_err, (u8)sbalf15);
	return QETH_SEND_ERROR_LINK_FAILURE;
F
Frank Blaschka 已提交
3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254
}

/*
 * 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
3255
			QETH_CARD_TEXT(queue->card, 6, "np->pack");
F
Frank Blaschka 已提交
3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277
			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
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3278
			QETH_CARD_TEXT(queue->card, 6, "pack->np");
F
Frank Blaschka 已提交
3279 3280 3281 3282
			if (queue->card->options.performance_stats)
				queue->card->perf_stats.sc_p_dp++;
			queue->do_pack = 0;
			/* flush packing buffers */
3283
			buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3284 3285 3286 3287
			if ((atomic_read(&buffer->state) ==
						QETH_QDIO_BUF_EMPTY) &&
			    (buffer->next_element_to_fill > 0)) {
				atomic_set(&buffer->state,
3288
					   QETH_QDIO_BUF_PRIMED);
F
Frank Blaschka 已提交
3289 3290 3291 3292 3293 3294 3295 3296 3297 3298
				flush_count++;
				queue->next_buf_to_fill =
					(queue->next_buf_to_fill + 1) %
					QDIO_MAX_BUFFERS_PER_Q;
			}
		}
	}
	return flush_count;
}

3299

F
Frank Blaschka 已提交
3300 3301 3302 3303 3304 3305 3306 3307 3308
/*
 * 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;

3309
	buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320
	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
3321 3322
static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
			       int count)
F
Frank Blaschka 已提交
3323 3324 3325 3326 3327 3328 3329
{
	struct qeth_qdio_out_buffer *buf;
	int rc;
	int i;
	unsigned int qdio_flags;

	for (i = index; i < index + count; ++i) {
3330 3331
		int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
		buf = queue->bufs[bidx];
3332 3333
		buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
				SBAL_EFLAGS_LAST_ENTRY;
F
Frank Blaschka 已提交
3334

3335 3336 3337
		if (queue->bufstates)
			queue->bufstates[bidx].user = buf;

F
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3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348
		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);
3349
				buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
F
Frank Blaschka 已提交
3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361
			}
		} 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);
3362
				buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
F
Frank Blaschka 已提交
3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376
			}
		}
	}

	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
3377
		     queue->queue_no, index, count);
F
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3378 3379 3380 3381
	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;
3382
	atomic_add(count, &queue->used_buffers);
F
Frank Blaschka 已提交
3383
	if (rc) {
3384 3385
		queue->card->stats.tx_errors += count;
		/* ignore temporary SIGA errors without busy condition */
3386
		if (rc == -ENOBUFS)
3387
			return;
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3388
		QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3389 3390 3391
		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
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3392
		QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3393

F
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3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 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
		/* 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
3437
				qeth_flush_buffers(queue, index, flush_cnt);
F
Frank Blaschka 已提交
3438 3439 3440 3441 3442
			atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
		}
	}
}

3443 3444 3445 3446 3447
void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
		unsigned long card_ptr)
{
	struct qeth_card *card = (struct qeth_card *)card_ptr;

3448
	if (card->dev && (card->dev->flags & IFF_UP))
3449 3450 3451 3452
		napi_schedule(&card->napi);
}
EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);

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 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551
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;
}

3552
void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3553
		unsigned int queue, int first_elem, int count,
3554 3555 3556 3557
		unsigned long card_ptr)
{
	struct qeth_card *card = (struct qeth_card *)card_ptr;

3558 3559 3560 3561 3562 3563
	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)
3564
		qeth_schedule_recovery(card);
3565 3566


3567 3568 3569
}
EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);

J
Jan Glauber 已提交
3570 3571 3572
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
3573 3574 3575 3576 3577 3578
{
	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
3579
	QETH_CARD_TEXT(card, 6, "qdouhdl");
3580
	if (qdio_error & QDIO_ERROR_FATAL) {
C
Carsten Otte 已提交
3581
		QETH_CARD_TEXT(card, 2, "achkcond");
J
Jan Glauber 已提交
3582 3583 3584
		netif_stop_queue(card->dev);
		qeth_schedule_recovery(card);
		return;
F
Frank Blaschka 已提交
3585 3586 3587 3588 3589 3590 3591
	}
	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) {
3592 3593
		int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
		buffer = queue->bufs[bidx];
3594
		qeth_handle_send_error(card, buffer, qdio_error);
3595 3596 3597 3598

		if (queue->bufstates &&
		    (queue->bufstates[bidx].flags &
		     QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
S
Stefan Raspl 已提交
3599
			WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3600 3601 3602 3603 3604 3605 3606 3607

			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);
			}
3608 3609
			buffer->aob = queue->bufstates[bidx].aob;
			QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3610
			QETH_CARD_TEXT(queue->card, 5, "aob");
3611 3612
			QETH_CARD_TEXT_(queue->card, 5, "%lx",
					virt_to_phys(buffer->aob));
3613 3614
			if (qeth_init_qdio_out_buf(queue, bidx)) {
				QETH_CARD_TEXT(card, 2, "outofbuf");
3615
				qeth_schedule_recovery(card);
3616
			}
3617
		} else {
3618 3619 3620 3621 3622 3623 3624 3625
			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);
			}

3626 3627 3628 3629
			qeth_clear_output_buffer(queue, buffer,
						QETH_QDIO_BUF_EMPTY);
		}
		qeth_cleanup_handled_pending(queue, bidx, 0);
F
Frank Blaschka 已提交
3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645
	}
	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)
{
3646 3647
	if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
		     card->info.type == QETH_CARD_TYPE_OSX))
F
Frank Blaschka 已提交
3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684
		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)
{
3685 3686 3687
	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
3688

3689
	elements_needed += skb_shinfo(skb)->nr_frags;
F
Frank Blaschka 已提交
3690
	if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3691
		QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
F
Frank Blaschka 已提交
3692 3693 3694 3695 3696 3697 3698 3699
			"(Number=%d / Length=%d). Discarded.\n",
			(elements_needed+elems), skb->len);
		return 0;
	}
	return elements_needed;
}
EXPORT_SYMBOL_GPL(qeth_get_elements_no);

3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718
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
3719
static inline void __qeth_fill_buffer(struct sk_buff *skb,
3720 3721
	struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
	int offset)
F
Frank Blaschka 已提交
3722
{
3723
	int length = skb->len - skb->data_len;
F
Frank Blaschka 已提交
3724 3725 3726
	int length_here;
	int element;
	char *data;
3727 3728
	int first_lap, cnt;
	struct skb_frag_struct *frag;
F
Frank Blaschka 已提交
3729 3730 3731 3732 3733

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

3734 3735
	if (offset >= 0) {
		data = skb->data + offset;
3736
		length -= offset;
3737 3738 3739
		first_lap = 0;
	}

F
Frank Blaschka 已提交
3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750
	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)
3751
				if (skb_shinfo(skb)->nr_frags)
3752 3753
					buffer->element[element].eflags =
						SBAL_EFLAGS_FIRST_FRAG;
3754
				else
3755
					buffer->element[element].eflags = 0;
F
Frank Blaschka 已提交
3756
			else
3757 3758
				buffer->element[element].eflags =
				    SBAL_EFLAGS_MIDDLE_FRAG;
F
Frank Blaschka 已提交
3759 3760
		} else {
			if (first_lap)
3761 3762
				buffer->element[element].eflags =
				    SBAL_EFLAGS_FIRST_FRAG;
F
Frank Blaschka 已提交
3763
			else
3764 3765
				buffer->element[element].eflags =
				    SBAL_EFLAGS_MIDDLE_FRAG;
F
Frank Blaschka 已提交
3766 3767 3768 3769 3770
		}
		data += length_here;
		element++;
		first_lap = 0;
	}
3771 3772 3773

	for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
		frag = &skb_shinfo(skb)->frags[cnt];
3774 3775
		buffer->element[element].addr = (char *)
			page_to_phys(skb_frag_page(frag))
3776 3777
			+ frag->page_offset;
		buffer->element[element].length = frag->size;
3778
		buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
3779 3780 3781
		element++;
	}

3782 3783
	if (buffer->element[element - 1].eflags)
		buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
F
Frank Blaschka 已提交
3784 3785 3786
	*next_element_to_fill = element;
}

F
Frank Blaschka 已提交
3787
static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3788 3789
		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
3790 3791 3792 3793 3794 3795 3796 3797 3798
{
	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 ....*/
3799
	if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
F
Frank Blaschka 已提交
3800 3801
		int element = buf->next_element_to_fill;

3802 3803
		hdr_len = sizeof(struct qeth_hdr_tso) +
			((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
F
Frank Blaschka 已提交
3804 3805 3806
		/*fill first buffer entry only with header information */
		buffer->element[element].addr = skb->data;
		buffer->element[element].length = hdr_len;
3807
		buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
F
Frank Blaschka 已提交
3808 3809 3810 3811 3812
		buf->next_element_to_fill++;
		skb->data += hdr_len;
		skb->len  -= hdr_len;
		large_send = 1;
	}
3813 3814 3815 3816 3817 3818

	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;
3819
		buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3820 3821 3822 3823
		buf->is_header[element] = 1;
		buf->next_element_to_fill++;
	}

3824 3825
	__qeth_fill_buffer(skb, buffer, large_send,
		(int *)&buf->next_element_to_fill, offset);
F
Frank Blaschka 已提交
3826 3827

	if (!queue->do_pack) {
C
Carsten Otte 已提交
3828
		QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
F
Frank Blaschka 已提交
3829 3830 3831 3832
		/* 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
3833
		QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
F
Frank Blaschka 已提交
3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851
		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
3852
		int offset, int hd_len)
F
Frank Blaschka 已提交
3853 3854 3855 3856 3857 3858 3859 3860 3861
{
	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;
3862
	buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3863 3864 3865 3866 3867 3868
	/*
	 * 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
3869
	queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
F
Frank Blaschka 已提交
3870 3871
					  QDIO_MAX_BUFFERS_PER_Q;
	atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
F
Frank Blaschka 已提交
3872 3873
	qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
	qeth_flush_buffers(queue, index, 1);
F
Frank Blaschka 已提交
3874 3875 3876 3877 3878 3879 3880 3881 3882
	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
3883
		int elements_needed)
F
Frank Blaschka 已提交
3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895
{
	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;
3896
	buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908
	/*
	 * 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
3909 3910 3911 3912 3913 3914 3915 3916 3917
		/* 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;
3918
			buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3919 3920 3921 3922 3923
			/* 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
3924
							   flush_count);
F
Frank Blaschka 已提交
3925
				atomic_set(&queue->state,
F
Frank Blaschka 已提交
3926
						QETH_OUT_Q_UNLOCKED);
F
Frank Blaschka 已提交
3927
				return -EBUSY;
F
Frank Blaschka 已提交
3928 3929 3930
			}
		}
	}
F
Frank Blaschka 已提交
3931
	tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
F
Frank Blaschka 已提交
3932 3933 3934 3935
	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
3936
		qeth_flush_buffers(queue, start_index, flush_count);
F
Frank Blaschka 已提交
3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956
	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
3957
			qeth_flush_buffers(queue, start_index, flush_count);
F
Frank Blaschka 已提交
3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972
	}
	/* 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
3973
	QETH_CARD_TEXT(card, 4, "prmadpcb");
F
Frank Blaschka 已提交
3974 3975 3976 3977 3978 3979

	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
3980
		QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
F
Frank Blaschka 已提交
3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993
		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
3994
	QETH_CARD_TEXT(card, 4, "setprom");
F
Frank Blaschka 已提交
3995 3996 3997 3998 3999 4000 4001 4002 4003

	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
4004
	QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
F
Frank Blaschka 已提交
4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018

	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];

4019
	card = dev->ml_priv;
F
Frank Blaschka 已提交
4020

C
Carsten Otte 已提交
4021
	QETH_CARD_TEXT(card, 4, "chgmtu");
F
Frank Blaschka 已提交
4022
	sprintf(dbf_text, "%8x", new_mtu);
C
Carsten Otte 已提交
4023
	QETH_CARD_TEXT(card, 4, dbf_text);
F
Frank Blaschka 已提交
4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040

	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;

4041
	card = dev->ml_priv;
F
Frank Blaschka 已提交
4042

C
Carsten Otte 已提交
4043
	QETH_CARD_TEXT(card, 5, "getstat");
F
Frank Blaschka 已提交
4044 4045 4046 4047 4048 4049 4050 4051 4052 4053

	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
4054
	QETH_CARD_TEXT(card, 4, "chgmaccb");
F
Frank Blaschka 已提交
4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073

	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
4074
	QETH_CARD_TEXT(card, 4, "chgmac");
F
Frank Blaschka 已提交
4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088

	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
4089 4090 4091 4092 4093
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;
S
Stefan Raspl 已提交
4094
	int fallback = *(int *)reply->param;
E
Einar Lueck 已提交
4095

C
Carsten Otte 已提交
4096
	QETH_CARD_TEXT(card, 4, "setaccb");
E
Einar Lueck 已提交
4097 4098 4099 4100 4101 4102 4103

	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);
S
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4104 4105 4106 4107 4108 4109
	if (cmd->data.setadapterparms.hdr.return_code !=
						SET_ACCESS_CTRL_RC_SUCCESS)
		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);
E
Einar Lueck 已提交
4110 4111 4112 4113 4114 4115 4116 4117 4118 4119
	switch (cmd->data.setadapterparms.hdr.return_code) {
	case SET_ACCESS_CTRL_RC_SUCCESS:
		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");
		}
		break;
S
Stefan Raspl 已提交
4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131
	case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
		QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
				"deactivated\n", dev_name(&card->gdev->dev));
		if (fallback)
			card->options.isolation = card->options.prev_isolation;
		break;
	case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
		QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
				" activated\n", dev_name(&card->gdev->dev));
		if (fallback)
			card->options.isolation = card->options.prev_isolation;
		break;
E
Einar Lueck 已提交
4132 4133 4134 4135 4136 4137 4138 4139
	case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
		dev_err(&card->gdev->dev, "Adapter does not "
			"support QDIO data connection isolation\n");
		break;
	case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
		dev_err(&card->gdev->dev,
			"Adapter is dedicated. "
			"QDIO data connection isolation not supported\n");
S
Stefan Raspl 已提交
4140 4141
		if (fallback)
			card->options.isolation = card->options.prev_isolation;
E
Einar Lueck 已提交
4142 4143 4144 4145
		break;
	case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
		dev_err(&card->gdev->dev,
			"TSO does not permit QDIO data connection isolation\n");
S
Stefan Raspl 已提交
4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163
		if (fallback)
			card->options.isolation = card->options.prev_isolation;
		break;
	case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
		dev_err(&card->gdev->dev, "The adjacent switch port does not "
			"support reflective relay mode\n");
		if (fallback)
			card->options.isolation = card->options.prev_isolation;
		break;
	case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
		dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
					"enabled at the adjacent switch port");
		if (fallback)
			card->options.isolation = card->options.prev_isolation;
		break;
	case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
		dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
					"at the adjacent switch failed\n");
E
Einar Lueck 已提交
4164 4165 4166
		break;
	default:
		/* this should never happen */
S
Stefan Raspl 已提交
4167 4168
		if (fallback)
			card->options.isolation = card->options.prev_isolation;
E
Einar Lueck 已提交
4169 4170 4171
		break;
	}
	qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4172
	return 0;
E
Einar Lueck 已提交
4173 4174 4175
}

static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
S
Stefan Raspl 已提交
4176
		enum qeth_ipa_isolation_modes isolation, int fallback)
E
Einar Lueck 已提交
4177 4178 4179 4180 4181 4182
{
	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
4183
	QETH_CARD_TEXT(card, 4, "setacctl");
E
Einar Lueck 已提交
4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195

	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,
S
Stefan Raspl 已提交
4196
			       &fallback);
E
Einar Lueck 已提交
4197 4198 4199 4200
	QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
	return rc;
}

S
Stefan Raspl 已提交
4201
int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
E
Einar Lueck 已提交
4202 4203 4204
{
	int rc = 0;

C
Carsten Otte 已提交
4205
	QETH_CARD_TEXT(card, 4, "setactlo");
E
Einar Lueck 已提交
4206

4207 4208 4209
	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
4210
		rc = qeth_setadpparms_set_access_ctrl(card,
S
Stefan Raspl 已提交
4211
			card->options.isolation, fallback);
E
Einar Lueck 已提交
4212 4213
		if (rc) {
			QETH_DBF_MESSAGE(3,
4214
				"IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
E
Einar Lueck 已提交
4215 4216
				card->gdev->dev.kobj.name,
				rc);
S
Stefan Raspl 已提交
4217
			rc = -EOPNOTSUPP;
E
Einar Lueck 已提交
4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229
		}
	} 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
4230 4231 4232 4233
void qeth_tx_timeout(struct net_device *dev)
{
	struct qeth_card *card;

4234
	card = dev->ml_priv;
C
Carsten Otte 已提交
4235
	QETH_CARD_TEXT(card, 4, "txtimeo");
F
Frank Blaschka 已提交
4236 4237 4238 4239 4240 4241 4242
	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)
{
4243
	struct qeth_card *card = dev->ml_priv;
F
Frank Blaschka 已提交
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 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313
	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
4314
	QETH_CARD_TEXT(card, 4, "sendsnmp");
F
Frank Blaschka 已提交
4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338

	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
4339
	QETH_CARD_TEXT(card, 3, "snpcmdcb");
F
Frank Blaschka 已提交
4340 4341 4342 4343 4344 4345 4346

	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
4347
		QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
F
Frank Blaschka 已提交
4348 4349 4350 4351 4352
		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
4353
		QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
F
Frank Blaschka 已提交
4354 4355 4356 4357 4358 4359 4360 4361 4362 4363
		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
4364
		QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4365
		cmd->hdr.return_code = IPA_RC_ENOMEM;
F
Frank Blaschka 已提交
4366 4367
		return 0;
	}
C
Carsten Otte 已提交
4368
	QETH_CARD_TEXT_(card, 4, "snore%i",
F
Frank Blaschka 已提交
4369
		       cmd->data.setadapterparms.hdr.used_total);
C
Carsten Otte 已提交
4370
	QETH_CARD_TEXT_(card, 4, "sseqn%i",
F
Frank Blaschka 已提交
4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383
		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
4384
		QETH_CARD_TEXT_(card, 4, "srtot%i",
F
Frank Blaschka 已提交
4385
			       cmd->data.setadapterparms.hdr.used_total);
C
Carsten Otte 已提交
4386
		QETH_CARD_TEXT_(card, 4, "srseq%i",
F
Frank Blaschka 已提交
4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402
			       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
4403
	QETH_CARD_TEXT(card, 3, "snmpcmd");
F
Frank Blaschka 已提交
4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414

	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;
4415 4416
	ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
	if (IS_ERR(ureq)) {
C
Carsten Otte 已提交
4417
		QETH_CARD_TEXT(card, 2, "snmpnome");
4418
		return PTR_ERR(ureq);
F
Frank Blaschka 已提交
4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434
	}
	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)
4435
		QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
F
Frank Blaschka 已提交
4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447
			   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);

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 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 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 4541 4542 4543 4544 4545
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
4546 4547 4548 4549 4550 4551 4552 4553 4554 4555
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;
	}
}

4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582
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);
4583 4584
	if (ddev_offline)
		qeth_configure_blkt_default(card, prcd);
4585 4586 4587 4588 4589 4590
	kfree(prcd);

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

4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604
	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;
	}


4605 4606 4607 4608 4609 4610 4611
out_offline:
	if (ddev_offline == 1)
		ccw_device_set_offline(ddev);
out:
	return;
}

4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629
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
4630 4631 4632 4633 4634
static int qeth_qdio_establish(struct qeth_card *card)
{
	struct qdio_initialize init_data;
	char *qib_param_field;
	struct qdio_buffer **in_sbal_ptrs;
4635
	void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
F
Frank Blaschka 已提交
4636 4637 4638 4639
	struct qdio_buffer **out_sbal_ptrs;
	int i, j, k;
	int rc = 0;

4640
	QETH_DBF_TEXT(SETUP, 2, "qdioest");
F
Frank Blaschka 已提交
4641 4642 4643

	qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
			      GFP_KERNEL);
4644 4645 4646 4647
	if (!qib_param_field) {
		rc =  -ENOMEM;
		goto out_free_nothing;
	}
F
Frank Blaschka 已提交
4648 4649 4650 4651

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

4652
	in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4653
			       QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
F
Frank Blaschka 已提交
4654 4655
			       GFP_KERNEL);
	if (!in_sbal_ptrs) {
4656 4657
		rc = -ENOMEM;
		goto out_free_qib_param;
F
Frank Blaschka 已提交
4658
	}
4659
	for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
F
Frank Blaschka 已提交
4660 4661
		in_sbal_ptrs[i] = (struct qdio_buffer *)
			virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4662
	}
F
Frank Blaschka 已提交
4663

4664 4665
	queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
				   GFP_KERNEL);
4666 4667 4668 4669
	if (!queue_start_poll) {
		rc = -ENOMEM;
		goto out_free_in_sbals;
	}
4670
	for (i = 0; i < card->qdio.no_in_queues; ++i)
4671
		queue_start_poll[i] = card->discipline->start_poll;
4672 4673

	qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4674

F
Frank Blaschka 已提交
4675
	out_sbal_ptrs =
4676
		kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
F
Frank Blaschka 已提交
4677 4678
			sizeof(void *), GFP_KERNEL);
	if (!out_sbal_ptrs) {
4679 4680
		rc = -ENOMEM;
		goto out_free_queue_start_poll;
F
Frank Blaschka 已提交
4681 4682 4683 4684
	}
	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(
4685
				card->qdio.out_qs[i]->bufs[j]->buffer);
F
Frank Blaschka 已提交
4686 4687 4688 4689 4690 4691 4692
		}

	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;
4693
	init_data.no_input_qs            = card->qdio.no_in_queues;
F
Frank Blaschka 已提交
4694
	init_data.no_output_qs           = card->qdio.no_out_queues;
4695 4696
	init_data.input_handler 	 = card->discipline->input_handler;
	init_data.output_handler	 = card->discipline->output_handler;
4697
	init_data.queue_start_poll_array = queue_start_poll;
F
Frank Blaschka 已提交
4698 4699 4700
	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;
4701
	init_data.output_sbal_state_array = card->qdio.out_bufstates;
4702 4703
	init_data.scan_threshold =
		(card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
F
Frank Blaschka 已提交
4704 4705 4706

	if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
		QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
J
Jan Glauber 已提交
4707 4708 4709 4710 4711 4712 4713
		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
4714
			atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
J
Jan Glauber 已提交
4715 4716
			qdio_free(CARD_DDEV(card));
		}
F
Frank Blaschka 已提交
4717
	}
4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728

	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
4729
out:
F
Frank Blaschka 已提交
4730
	kfree(out_sbal_ptrs);
4731 4732 4733
out_free_queue_start_poll:
	kfree(queue_start_poll);
out_free_in_sbals:
F
Frank Blaschka 已提交
4734
	kfree(in_sbal_ptrs);
4735
out_free_qib_param:
F
Frank Blaschka 已提交
4736
	kfree(qib_param_field);
4737
out_free_nothing:
F
Frank Blaschka 已提交
4738 4739 4740 4741 4742 4743
	return rc;
}

static void qeth_core_free_card(struct qeth_card *card)
{

4744 4745
	QETH_DBF_TEXT(SETUP, 2, "freecrd");
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
F
Frank Blaschka 已提交
4746 4747 4748 4749 4750 4751
	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);
4752
	unregister_service_level(&card->qeth_service_level);
F
Frank Blaschka 已提交
4753 4754 4755
	kfree(card);
}

4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768
void qeth_trace_features(struct qeth_card *card)
{
	QETH_CARD_TEXT(card, 2, "features");
	QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.supported_funcs);
	QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa4.enabled_funcs);
	QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.supported_funcs);
	QETH_CARD_TEXT_(card, 2, "%x", card->options.ipa6.enabled_funcs);
	QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.supported_funcs);
	QETH_CARD_TEXT_(card, 2, "%x", card->options.adp.enabled_funcs);
	QETH_CARD_TEXT_(card, 2, "%x", card->info.diagass_support);
}
EXPORT_SYMBOL_GPL(qeth_trace_features);

F
Frank Blaschka 已提交
4769
static struct ccw_device_id qeth_ids[] = {
4770 4771 4772 4773 4774 4775 4776 4777 4778 4779
	{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
4780 4781 4782 4783 4784
	{},
};
MODULE_DEVICE_TABLE(ccw, qeth_ids);

static struct ccw_driver qeth_ccw_driver = {
4785
	.driver = {
S
Sebastian Ott 已提交
4786
		.owner = THIS_MODULE,
4787 4788
		.name = "qeth",
	},
F
Frank Blaschka 已提交
4789 4790 4791 4792 4793 4794 4795
	.ids = qeth_ids,
	.probe = ccwgroup_probe_ccwdev,
	.remove = ccwgroup_remove_ccwdev,
};

int qeth_core_hardsetup_card(struct qeth_card *card)
{
4796
	int retries = 3;
F
Frank Blaschka 已提交
4797 4798
	int rc;

4799
	QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
F
Frank Blaschka 已提交
4800
	atomic_set(&card->force_alloc_skb, 0);
4801
	qeth_update_from_chp_desc(card);
F
Frank Blaschka 已提交
4802
retry:
4803
	if (retries < 3)
4804 4805
		QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
			dev_name(&card->gdev->dev));
4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817
	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
4818
	rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4819
retriable:
F
Frank Blaschka 已提交
4820
	if (rc == -ERESTARTSYS) {
4821
		QETH_DBF_TEXT(SETUP, 2, "break1");
F
Frank Blaschka 已提交
4822 4823
		return rc;
	} else if (rc) {
4824
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4825
		if (--retries < 0)
F
Frank Blaschka 已提交
4826 4827 4828 4829
			goto out;
		else
			goto retry;
	}
4830
	qeth_determine_capabilities(card);
F
Frank Blaschka 已提交
4831 4832 4833 4834
	qeth_init_tokens(card);
	qeth_init_func_level(card);
	rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
	if (rc == -ERESTARTSYS) {
4835
		QETH_DBF_TEXT(SETUP, 2, "break2");
F
Frank Blaschka 已提交
4836 4837
		return rc;
	} else if (rc) {
4838
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
F
Frank Blaschka 已提交
4839 4840 4841 4842 4843 4844 4845
		if (--retries < 0)
			goto out;
		else
			goto retry;
	}
	rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
	if (rc == -ERESTARTSYS) {
4846
		QETH_DBF_TEXT(SETUP, 2, "break3");
F
Frank Blaschka 已提交
4847 4848
		return rc;
	} else if (rc) {
4849
		QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
F
Frank Blaschka 已提交
4850 4851 4852 4853 4854
		if (--retries < 0)
			goto out;
		else
			goto retry;
	}
4855
	card->read_or_write_problem = 0;
F
Frank Blaschka 已提交
4856 4857
	rc = qeth_mpc_initialize(card);
	if (rc) {
4858
		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
F
Frank Blaschka 已提交
4859 4860
		goto out;
	}
4861 4862 4863 4864 4865 4866 4867 4868 4869

	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
4870 4871
	return 0;
out:
4872 4873 4874 4875
	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
4876 4877 4878 4879
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);

4880 4881
static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
		struct qdio_buffer_element *element,
F
Frank Blaschka 已提交
4882 4883 4884 4885
		struct sk_buff **pskb, int offset, int *pfrag, int data_len)
{
	struct page *page = virt_to_page(element->addr);
	if (*pskb == NULL) {
4886 4887 4888 4889 4890 4891 4892 4893 4894 4895
		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
4896
		skb_reserve(*pskb, ETH_HLEN);
4897
		if (data_len <= QETH_RX_PULL_LEN) {
F
Frank Blaschka 已提交
4898 4899 4900 4901
			memcpy(skb_put(*pskb, data_len), element->addr + offset,
				data_len);
		} else {
			get_page(page);
4902 4903 4904 4905 4906 4907 4908 4909
			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
4910 4911 4912 4913 4914 4915 4916 4917 4918 4919
			(*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)++;
	}
4920 4921


F
Frank Blaschka 已提交
4922 4923 4924 4925
	return 0;
}

struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4926
		struct qeth_qdio_buffer *qethbuffer,
F
Frank Blaschka 已提交
4927 4928 4929 4930
		struct qdio_buffer_element **__element, int *__offset,
		struct qeth_hdr **hdr)
{
	struct qdio_buffer_element *element = *__element;
4931
	struct qdio_buffer *buffer = qethbuffer->buffer;
F
Frank Blaschka 已提交
4932 4933
	int offset = *__offset;
	struct sk_buff *skb = NULL;
4934
	int skb_len = 0;
F
Frank Blaschka 已提交
4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 4949 4950 4951 4952
	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);
4953 4954 4955 4956 4957
	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
4958
		skb_len = (*hdr)->hdr.l3.length;
4959
		headroom = ETH_HLEN;
4960 4961 4962 4963 4964 4965 4966
		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
4967 4968 4969 4970 4971
	}

	if (!skb_len)
		return NULL;

4972 4973 4974 4975
	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
4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989
		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) {
4990 4991
				if (qeth_create_skb_frag(qethbuffer, element,
				    &skb, offset, &frag, data_len))
F
Frank Blaschka 已提交
4992 4993 4994 4995 4996 4997 4998 4999 5000
					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
5001
				QETH_CARD_TEXT(card, 4, "unexeob");
C
Carsten Otte 已提交
5002
				QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
F
Frank Blaschka 已提交
5003 5004 5005 5006 5007 5008 5009 5010 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022
				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
5023
		QETH_CARD_TEXT(card, 2, "noskbmem");
F
Frank Blaschka 已提交
5024 5025 5026 5027 5028 5029 5030 5031
	}
	card->stats.rx_dropped++;
	return NULL;
}
EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);

static void qeth_unregister_dbf_views(void)
{
5032 5033 5034 5035 5036
	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
5037 5038
}

C
Carsten Otte 已提交
5039
void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
P
Peter Tiedemann 已提交
5040 5041
{
	char dbf_txt_buf[32];
5042
	va_list args;
P
Peter Tiedemann 已提交
5043

C
Carsten Otte 已提交
5044
	if (level > id->level)
P
Peter Tiedemann 已提交
5045
		return;
5046 5047 5048
	va_start(args, fmt);
	vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
	va_end(args);
C
Carsten Otte 已提交
5049
	debug_text_event(id, level, dbf_txt_buf);
P
Peter Tiedemann 已提交
5050 5051 5052
}
EXPORT_SYMBOL_GPL(qeth_dbf_longtext);

F
Frank Blaschka 已提交
5053 5054
static int qeth_register_dbf_views(void)
{
5055 5056 5057 5058 5059 5060 5061 5062 5063 5064 5065 5066 5067
	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
5068

5069 5070 5071 5072 5073 5074
		/* 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
5075

5076 5077 5078
		/* set a passing level */
		debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
	}
F
Frank Blaschka 已提交
5079 5080 5081 5082 5083 5084 5085 5086

	return 0;
}

int qeth_core_load_discipline(struct qeth_card *card,
		enum qeth_discipline_id discipline)
{
	int rc = 0;
5087
	mutex_lock(&qeth_mod_mutex);
F
Frank Blaschka 已提交
5088 5089
	switch (discipline) {
	case QETH_DISCIPLINE_LAYER3:
5090 5091
		card->discipline = try_then_request_module(
			symbol_get(qeth_l3_discipline), "qeth_l3");
F
Frank Blaschka 已提交
5092 5093
		break;
	case QETH_DISCIPLINE_LAYER2:
5094 5095
		card->discipline = try_then_request_module(
			symbol_get(qeth_l2_discipline), "qeth_l2");
F
Frank Blaschka 已提交
5096 5097
		break;
	}
5098
	if (!card->discipline) {
5099 5100
		dev_err(&card->gdev->dev, "There is no kernel module to "
			"support discipline %d\n", discipline);
F
Frank Blaschka 已提交
5101 5102
		rc = -EINVAL;
	}
5103
	mutex_unlock(&qeth_mod_mutex);
F
Frank Blaschka 已提交
5104 5105 5106 5107 5108 5109
	return rc;
}

void qeth_core_free_discipline(struct qeth_card *card)
{
	if (card->options.layer2)
5110
		symbol_put(qeth_l2_discipline);
F
Frank Blaschka 已提交
5111
	else
5112 5113
		symbol_put(qeth_l3_discipline);
	card->discipline = NULL;
F
Frank Blaschka 已提交
5114 5115
}

5116 5117 5118 5119 5120 5121 5122 5123 5124
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
5125 5126 5127 5128 5129 5130
static int qeth_core_probe_device(struct ccwgroup_device *gdev)
{
	struct qeth_card *card;
	struct device *dev;
	int rc;
	unsigned long flags;
5131
	char dbf_name[20];
F
Frank Blaschka 已提交
5132

5133
	QETH_DBF_TEXT(SETUP, 2, "probedev");
F
Frank Blaschka 已提交
5134 5135 5136 5137 5138

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

5139
	QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
F
Frank Blaschka 已提交
5140 5141 5142

	card = qeth_alloc_card();
	if (!card) {
5143
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
F
Frank Blaschka 已提交
5144 5145 5146
		rc = -ENOMEM;
		goto err_dev;
	}
5147 5148 5149 5150 5151 5152 5153 5154 5155 5156 5157

	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
5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168
	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) {
5169
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5170
		goto err_dbf;
F
Frank Blaschka 已提交
5171 5172 5173
	}
	rc = qeth_setup_card(card);
	if (rc) {
5174
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5175
		goto err_dbf;
F
Frank Blaschka 已提交
5176 5177
	}

5178
	if (card->info.type == QETH_CARD_TYPE_OSN)
5179
		gdev->dev.type = &qeth_osn_devtype;
5180
	else
5181 5182
		gdev->dev.type = &qeth_generic_devtype;

5183 5184 5185
	switch (card->info.type) {
	case QETH_CARD_TYPE_OSN:
	case QETH_CARD_TYPE_OSM:
F
Frank Blaschka 已提交
5186
		rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5187
		if (rc)
5188
			goto err_dbf;
5189
		rc = card->discipline->setup(card->gdev);
F
Frank Blaschka 已提交
5190
		if (rc)
5191 5192 5193 5194 5195
			goto err_disc;
	case QETH_CARD_TYPE_OSD:
	case QETH_CARD_TYPE_OSX:
	default:
		break;
F
Frank Blaschka 已提交
5196 5197 5198 5199 5200
	}

	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);
5201 5202

	qeth_determine_capabilities(card);
F
Frank Blaschka 已提交
5203 5204
	return 0;

5205 5206
err_disc:
	qeth_core_free_discipline(card);
5207 5208
err_dbf:
	debug_unregister(card->debug);
F
Frank Blaschka 已提交
5209 5210 5211 5212 5213 5214 5215 5216 5217 5218 5219 5220
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);

5221
	QETH_DBF_TEXT(SETUP, 2, "removedv");
F
Frank Blaschka 已提交
5222

5223 5224
	if (card->discipline) {
		card->discipline->remove(gdev);
5225 5226 5227
		qeth_core_free_discipline(card);
	}

5228
	debug_unregister(card->debug);
F
Frank Blaschka 已提交
5229 5230 5231 5232 5233 5234 5235 5236 5237 5238 5239 5240 5241 5242 5243
	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;

5244
	if (!card->discipline) {
F
Frank Blaschka 已提交
5245 5246 5247 5248 5249 5250 5251
		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;
5252
		rc = card->discipline->setup(card->gdev);
F
Frank Blaschka 已提交
5253 5254 5255
		if (rc)
			goto err;
	}
5256
	rc = card->discipline->set_online(gdev);
F
Frank Blaschka 已提交
5257 5258 5259 5260 5261 5262 5263
err:
	return rc;
}

static int qeth_core_set_offline(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5264
	return card->discipline->set_offline(gdev);
F
Frank Blaschka 已提交
5265 5266 5267 5268 5269
}

static void qeth_core_shutdown(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5270 5271
	if (card->discipline && card->discipline->shutdown)
		card->discipline->shutdown(gdev);
F
Frank Blaschka 已提交
5272 5273
}

5274 5275 5276
static int qeth_core_prepare(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5277 5278
	if (card->discipline && card->discipline->prepare)
		return card->discipline->prepare(gdev);
5279 5280 5281 5282 5283 5284
	return 0;
}

static void qeth_core_complete(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5285 5286
	if (card->discipline && card->discipline->complete)
		card->discipline->complete(gdev);
5287 5288 5289 5290 5291
}

static int qeth_core_freeze(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5292 5293
	if (card->discipline && card->discipline->freeze)
		return card->discipline->freeze(gdev);
5294 5295 5296 5297 5298 5299
	return 0;
}

static int qeth_core_thaw(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5300 5301
	if (card->discipline && card->discipline->thaw)
		return card->discipline->thaw(gdev);
5302 5303 5304 5305 5306 5307
	return 0;
}

static int qeth_core_restore(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5308 5309
	if (card->discipline && card->discipline->restore)
		return card->discipline->restore(gdev);
5310 5311 5312
	return 0;
}

F
Frank Blaschka 已提交
5313
static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5314 5315 5316 5317
	.driver = {
		.owner = THIS_MODULE,
		.name = "qeth",
	},
5318
	.setup = qeth_core_probe_device,
F
Frank Blaschka 已提交
5319 5320 5321 5322
	.remove = qeth_core_remove_device,
	.set_online = qeth_core_set_online,
	.set_offline = qeth_core_set_offline,
	.shutdown = qeth_core_shutdown,
5323 5324 5325 5326 5327
	.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
5328 5329
};

5330 5331
static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
					    const char *buf, size_t count)
F
Frank Blaschka 已提交
5332 5333 5334
{
	int err;

5335 5336 5337 5338 5339
	err = ccwgroup_create_dev(qeth_core_root_dev,
				  &qeth_core_ccwgroup_driver, 3, buf);

	return err ? err : count;
}
F
Frank Blaschka 已提交
5340 5341
static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);

5342 5343 5344 5345 5346 5347 5348 5349 5350 5351 5352 5353
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
5354 5355 5356 5357 5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379
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"},
5380 5381
	{"rx poll time"},
	{"rx poll count"},
F
Frank Blaschka 已提交
5382 5383 5384 5385 5386 5387 5388 5389
	{"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"},
5390
	{"tx csum"},
F
Frank Blaschka 已提交
5391
	{"tx lin"},
5392 5393
	{"cq handler count"},
	{"cq handler time"}
F
Frank Blaschka 已提交
5394 5395
};

5396
int qeth_core_get_sset_count(struct net_device *dev, int stringset)
F
Frank Blaschka 已提交
5397
{
5398 5399 5400 5401 5402 5403
	switch (stringset) {
	case ETH_SS_STATS:
		return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
	default:
		return -EINVAL;
	}
F
Frank Blaschka 已提交
5404
}
5405
EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
F
Frank Blaschka 已提交
5406 5407 5408 5409

void qeth_core_get_ethtool_stats(struct net_device *dev,
		struct ethtool_stats *stats, u64 *data)
{
5410
	struct qeth_card *card = dev->ml_priv;
F
Frank Blaschka 已提交
5411 5412 5413 5414 5415 5416 5417 5418 5419 5420 5421 5422 5423 5424 5425 5426 5427 5428 5429 5430 5431 5432 5433 5434 5435 5436 5437 5438 5439 5440 5441 5442 5443 5444 5445 5446 5447 5448 5449
	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;
5450
	data[33] = card->perf_stats.tx_csum;
F
Frank Blaschka 已提交
5451
	data[34] = card->perf_stats.tx_lin;
5452 5453
	data[35] = card->perf_stats.cq_cnt;
	data[36] = card->perf_stats.cq_time;
F
Frank Blaschka 已提交
5454 5455 5456 5457 5458 5459 5460 5461 5462 5463 5464 5465 5466 5467 5468 5469 5470 5471 5472 5473
}
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)
{
5474
	struct qeth_card *card = dev->ml_priv;
5475 5476 5477 5478 5479 5480 5481 5482

	strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
		sizeof(info->driver));
	strlcpy(info->version, "1.0", sizeof(info->version));
	strlcpy(info->fw_version, card->info.mcl_level,
		sizeof(info->fw_version));
	snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
		 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
F
Frank Blaschka 已提交
5483 5484 5485
}
EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);

5486 5487 5488
int qeth_core_ethtool_get_settings(struct net_device *netdev,
					struct ethtool_cmd *ecmd)
{
5489
	struct qeth_card *card = netdev->ml_priv;
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 5524 5525 5526 5527 5528 5529 5530 5531 5532 5533 5534 5535 5536 5537 5538 5539 5540 5541 5542 5543 5544 5545 5546 5547 5548 5549 5550 5551 5552 5553 5554 5555 5556 5557 5558 5559 5560 5561 5562 5563 5564 5565 5566 5567 5568 5569 5570 5571 5572 5573 5574 5575
	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
5576 5577 5578 5579
static int __init qeth_core_init(void)
{
	int rc;

5580
	pr_info("loading core functions\n");
F
Frank Blaschka 已提交
5581 5582
	INIT_LIST_HEAD(&qeth_core_card_list.list);
	rwlock_init(&qeth_core_card_list.rwlock);
5583
	mutex_init(&qeth_mod_mutex);
F
Frank Blaschka 已提交
5584

S
Stefan Raspl 已提交
5585 5586
	qeth_wq = create_singlethread_workqueue("qeth_wq");

F
Frank Blaschka 已提交
5587 5588 5589
	rc = qeth_register_dbf_views();
	if (rc)
		goto out_err;
M
Mark McLoughlin 已提交
5590
	qeth_core_root_dev = root_device_register("qeth");
F
Frank Blaschka 已提交
5591 5592 5593
	rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
	if (rc)
		goto register_err;
5594 5595 5596 5597 5598 5599
	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;
	}
5600 5601 5602 5603 5604 5605
	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;
	}
5606 5607 5608 5609 5610 5611 5612
	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;
5613

5614
	return 0;
5615 5616 5617 5618 5619

ccwgroup_err:
	ccw_driver_unregister(&qeth_ccw_driver);
ccw_err:
	kmem_cache_destroy(qeth_qdio_outbuf_cache);
5620 5621
cqslab_err:
	kmem_cache_destroy(qeth_core_header_cache);
5622
slab_err:
M
Mark McLoughlin 已提交
5623
	root_device_unregister(qeth_core_root_dev);
F
Frank Blaschka 已提交
5624 5625 5626
register_err:
	qeth_unregister_dbf_views();
out_err:
5627
	pr_err("Initializing the qeth device driver failed\n");
F
Frank Blaschka 已提交
5628 5629 5630 5631 5632
	return rc;
}

static void __exit qeth_core_exit(void)
{
S
Stefan Raspl 已提交
5633
	destroy_workqueue(qeth_wq);
F
Frank Blaschka 已提交
5634 5635
	ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
	ccw_driver_unregister(&qeth_ccw_driver);
5636
	kmem_cache_destroy(qeth_qdio_outbuf_cache);
5637
	kmem_cache_destroy(qeth_core_header_cache);
5638
	root_device_unregister(qeth_core_root_dev);
F
Frank Blaschka 已提交
5639
	qeth_unregister_dbf_views();
5640
	pr_info("core functions removed\n");
F
Frank Blaschka 已提交
5641 5642 5643 5644 5645 5646 5647
}

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");