qeth_core_main.c 152.8 KB
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/*
 *  drivers/s390/net/qeth_core_main.c
 *
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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 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 " Guest LAN QDIO";
		case QETH_CARD_TYPE_IQD:
			return " Guest LAN Hiper";
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		case QETH_CARD_TYPE_OSM:
			return " Guest LAN QDIO - OSM";
		case QETH_CARD_TYPE_OSX:
			return " Guest LAN 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 "GuestLAN QDIO";
		case QETH_CARD_TYPE_IQD:
			return "GuestLAN Hiper";
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		case QETH_CARD_TYPE_OSM:
			return "GuestLAN OSM";
		case QETH_CARD_TYPE_OSX:
			return "GuestLAN 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;
				BUG_ON(head->next_pending != f);
				head->next_pending = c;
				kmem_cache_free(qeth_qdio_outbuf_cache, f);
			} else {
				head = c;
				c = c->next_pending;
			}

		}
	}
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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);

	BUG_ON(buffer == NULL);

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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 {
		BUG_ON(atomic_read(&buffer->state) != QETH_QDIO_BUF_PENDING);
		atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
		notification = TX_NOTIFY_DELAYED_OK;
	}

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

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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;
	};
	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));
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	else
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		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)) {
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			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)
542 543
				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:
548 549 550
				dev_warn(&card->gdev->dev,
					   "The link for interface %s on CHPID"
					   " 0x%X failed\n",
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					   QETH_CARD_IFNAME(card),
					   card->info.chpid);
				card->lan_online = 0;
				if (card->dev && netif_carrier_ok(card->dev))
					netif_carrier_off(card->dev);
				return NULL;
			case IPA_CMD_STARTLAN:
558 559 560
				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);
564
				card->lan_online = 1;
565 566
				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:
578
				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);
604
	atomic_set(&card->write.irq_pending, 0);
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}
EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);

608 609
static int qeth_check_idx_response(struct qeth_card *card,
	unsigned char *buffer)
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{
	if (!buffer)
		return 0;

614
	QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
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	if ((buffer[2] & 0xc0) == 0xc0) {
616
		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);
624 625 626 627 628 629
		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");
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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);
682
	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;
725
	int rc = 0;
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	card = CARD_FROM_CDEV(channel->ccwdev);
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	QETH_CARD_TEXT(card, 4, "sndctlcb");
729 730 731 732 733
	rc = qeth_check_idx_response(card, iob->data);
	switch (rc) {
	case 0:
		break;
	case -EIO:
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		qeth_clear_ipacmd_list(card);
735
		qeth_schedule_recovery(card);
736
		/* fall through */
737
	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;

802
	QETH_DBF_TEXT(SETUP, 2, "setupch");
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	for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
804
		channel->iob[cnt].data =
805
			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
906
	struct qeth_card *card;
F
Frank Blaschka 已提交
907 908

	sense = (char *) irb->ecw;
909 910
	cstat = irb->scsw.cmd.cstat;
	dstat = irb->scsw.cmd.dstat;
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Carsten Otte 已提交
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	card = CARD_FROM_CDEV(cdev);
F
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912 913 914 915

	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
916
		QETH_CARD_TEXT(card, 2, "CGENCHK");
917 918
		dev_warn(&cdev->dev, "The qeth device driver "
			"failed to recover an error on the device\n");
919
		QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
920
			dev_name(&cdev->dev), dstat, cstat);
F
Frank Blaschka 已提交
921 922 923 924 925 926 927 928
		print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
				16, 1, irb, 64, 1);
		return 1;
	}

	if (dstat & DEV_STAT_UNIT_CHECK) {
		if (sense[SENSE_RESETTING_EVENT_BYTE] &
		    SENSE_RESETTING_EVENT_FLAG) {
C
Carsten Otte 已提交
929
			QETH_CARD_TEXT(card, 2, "REVIND");
F
Frank Blaschka 已提交
930 931 932 933
			return 1;
		}
		if (sense[SENSE_COMMAND_REJECT_BYTE] &
		    SENSE_COMMAND_REJECT_FLAG) {
C
Carsten Otte 已提交
934
			QETH_CARD_TEXT(card, 2, "CMDREJi");
935
			return 1;
F
Frank Blaschka 已提交
936 937
		}
		if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
C
Carsten Otte 已提交
938
			QETH_CARD_TEXT(card, 2, "AFFE");
F
Frank Blaschka 已提交
939 940 941
			return 1;
		}
		if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
C
Carsten Otte 已提交
942
			QETH_CARD_TEXT(card, 2, "ZEROSEN");
F
Frank Blaschka 已提交
943 944
			return 0;
		}
C
Carsten Otte 已提交
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		QETH_CARD_TEXT(card, 2, "DGENCHK");
F
Frank Blaschka 已提交
946 947 948 949 950 951 952 953
			return 1;
	}
	return 0;
}

static long __qeth_check_irb_error(struct ccw_device *cdev,
		unsigned long intparm, struct irb *irb)
{
C
Carsten Otte 已提交
954 955 956 957
	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:
963 964
		QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
			dev_name(&cdev->dev));
C
Carsten Otte 已提交
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		QETH_CARD_TEXT(card, 2, "ckirberr");
		QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
F
Frank Blaschka 已提交
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		break;
	case -ETIMEDOUT:
969 970
		dev_warn(&cdev->dev, "A hardware operation timed out"
			" on the device\n");
C
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		QETH_CARD_TEXT(card, 2, "ckirberr");
		QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
F
Frank Blaschka 已提交
973 974 975 976 977 978 979 980
		if (intparm == QETH_RCD_PARM) {
			if (card && (card->data.ccwdev == cdev)) {
				card->data.state = CH_STATE_DOWN;
				wake_up(&card->wait_q);
			}
		}
		break;
	default:
981 982
		QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
			dev_name(&cdev->dev), PTR_ERR(irb));
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Carsten Otte 已提交
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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;
1002 1003
	cstat = irb->scsw.cmd.cstat;
	dstat = irb->scsw.cmd.dstat;
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1004 1005 1006 1007 1008

	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;
C
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1013
		QETH_CARD_TEXT(card, 5, "read");
F
Frank Blaschka 已提交
1014 1015
	} else if (card->write.ccwdev == cdev) {
		channel = &card->write;
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		QETH_CARD_TEXT(card, 5, "write");
F
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1017 1018
	} else {
		channel = &card->data;
C
Carsten Otte 已提交
1019
		QETH_CARD_TEXT(card, 5, "data");
F
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1020 1021 1022
	}
	atomic_set(&channel->irq_pending, 0);

1023
	if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
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		channel->state = CH_STATE_STOPPED;

1026
	if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
F
Frank Blaschka 已提交
1027 1028 1029 1030 1031 1032 1033 1034
		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
1035
		QETH_CARD_TEXT(card, 6, "clrchpar");
F
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1036 1037 1038 1039
		/* we don't have to handle this further */
		intparm = 0;
	}
	if (intparm == QETH_HALT_CHANNEL_PARM) {
C
Carsten Otte 已提交
1040
		QETH_CARD_TEXT(card, 6, "hltchpar");
F
Frank Blaschka 已提交
1041 1042 1043 1044 1045 1046 1047
		/* 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) {
1048 1049 1050 1051 1052 1053
			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
1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064
			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) {
1065
			qeth_clear_ipacmd_list(card);
F
Frank Blaschka 已提交
1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098
			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;
}

1099
static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1100
		struct qeth_qdio_out_buffer *buf,
1101
		enum iucv_tx_notify notification)
F
Frank Blaschka 已提交
1102 1103 1104
{
	struct sk_buff *skb;

1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128
	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;
1129 1130 1131 1132 1133 1134 1135 1136
	struct iucv_sock *iucv;
	int notify_general_error = 0;

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

	/* release may never happen from within CQ tasklet scope */
	BUG_ON(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
F
Frank Blaschka 已提交
1137

1138 1139
	skb = skb_dequeue(&buf->skb_list);
	while (skb) {
1140 1141
		QETH_CARD_TEXT(buf->q->card, 5, "skbr");
		QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1142 1143 1144 1145 1146 1147
		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);
			}
		}
1148 1149
		atomic_dec(&skb->users);
		dev_kfree_skb_any(skb);
F
Frank Blaschka 已提交
1150 1151
		skb = skb_dequeue(&buf->skb_list);
	}
1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166
}

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
1167
	for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1168 1169 1170 1171
		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
1172 1173
		buf->buffer->element[i].length = 0;
		buf->buffer->element[i].addr = NULL;
1174 1175
		buf->buffer->element[i].eflags = 0;
		buf->buffer->element[i].sflags = 0;
F
Frank Blaschka 已提交
1176
	}
1177 1178
	buf->buffer->element[15].eflags = 0;
	buf->buffer->element[15].sflags = 0;
F
Frank Blaschka 已提交
1179
	buf->next_element_to_fill = 0;
1180 1181 1182 1183 1184 1185 1186 1187 1188 1189
	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;
1190
		qeth_cleanup_handled_pending(q, j, 1);
1191 1192 1193 1194 1195 1196
		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
1197 1198 1199 1200
}

void qeth_clear_qdio_buffers(struct qeth_card *card)
{
1201
	int i;
F
Frank Blaschka 已提交
1202

C
Carsten Otte 已提交
1203
	QETH_CARD_TEXT(card, 2, "clearqdbf");
F
Frank Blaschka 已提交
1204
	/* clear outbound buffers to free skbs */
1205
	for (i = 0; i < card->qdio.no_out_queues; ++i) {
F
Frank Blaschka 已提交
1206
		if (card->qdio.out_qs[i]) {
1207
			qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
F
Frank Blaschka 已提交
1208
		}
1209
	}
F
Frank Blaschka 已提交
1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227
}
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)
{
1228
	int i, j;
F
Frank Blaschka 已提交
1229 1230 1231 1232

	if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
		QETH_QDIO_UNINITIALIZED)
		return;
1233 1234

	qeth_free_cq(card);
1235 1236
	cancel_delayed_work_sync(&card->buffer_reclaim_work);
	for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
1237
		dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
F
Frank Blaschka 已提交
1238 1239 1240 1241 1242 1243 1244
	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) {
1245
			qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
F
Frank Blaschka 已提交
1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256
			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;

1257
	QETH_DBF_TEXT(SETUP, 2, "freech");
F
Frank Blaschka 已提交
1258 1259 1260 1261
	for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
		kfree(channel->iob[cnt].data);
}

1262
static void qeth_get_channel_path_desc(struct qeth_card *card)
F
Frank Blaschka 已提交
1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275
{
	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;

1276
	QETH_DBF_TEXT(SETUP, 2, "chp_desc");
F
Frank Blaschka 已提交
1277 1278 1279 1280

	ccwdev = card->data.ccwdev;
	chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
	if (chp_dsc != NULL) {
1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291
		if (card->info.type != QETH_CARD_TYPE_IQD) {
			/* CHPP field bit 6 == 1 -> single queue */
			if ((chp_dsc->chpp & 0x02) == 0x02) {
				if ((atomic_read(&card->qdio.state) !=
					QETH_QDIO_UNINITIALIZED) &&
				    (card->qdio.no_out_queues == 4))
					/* change from 4 to 1 outbound queues */
					qeth_free_qdio_buffers(card);
				card->qdio.no_out_queues = 1;
				if (card->qdio.default_out_queue != 0)
					dev_info(&card->gdev->dev,
1292
					"Priority Queueing not supported\n");
1293 1294 1295 1296 1297 1298 1299 1300 1301 1302
				card->qdio.default_out_queue = 0;
			} else {
				if ((atomic_read(&card->qdio.state) !=
					QETH_QDIO_UNINITIALIZED) &&
				    (card->qdio.no_out_queues == 1)) {
					/* change from 1 to 4 outbound queues */
					qeth_free_qdio_buffers(card);
					card->qdio.default_out_queue = 2;
				}
				card->qdio.no_out_queues = 4;
1303 1304
			}
		}
1305
		card->info.func_level = 0x4100 + chp_dsc->desc;
F
Frank Blaschka 已提交
1306 1307
		kfree(chp_dsc);
	}
1308 1309 1310
	QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
	QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
	return;
F
Frank Blaschka 已提交
1311 1312 1313 1314
}

static void qeth_init_qdio_info(struct qeth_card *card)
{
1315
	QETH_DBF_TEXT(SETUP, 4, "intqdinf");
F
Frank Blaschka 已提交
1316 1317 1318
	atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
	/* inbound */
	card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1319 1320 1321 1322
	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
1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337
	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.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
	card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
	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
1338
	card->options.isolation = ISOLATION_MODE_NONE;
1339
	card->options.cq = QETH_CQ_DISABLED;
F
Frank Blaschka 已提交
1340 1341 1342 1343 1344 1345 1346 1347
}

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
1348
	QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
F
Frank Blaschka 已提交
1349 1350 1351 1352 1353 1354 1355 1356 1357 1358
			(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)
{
1359
	struct task_struct *ts;
F
Frank Blaschka 已提交
1360 1361
	struct qeth_card *card = container_of(work, struct qeth_card,
					kernel_thread_starter);
C
Carsten Otte 已提交
1362
	QETH_CARD_TEXT(card , 2, "strthrd");
F
Frank Blaschka 已提交
1363 1364 1365 1366

	if (card->read.state != CH_STATE_UP &&
	    card->write.state != CH_STATE_UP)
		return;
1367 1368
	if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
		ts = kthread_run(card->discipline.recover, (void *)card,
F
Frank Blaschka 已提交
1369
				"qeth_recover");
1370 1371 1372 1373 1374 1375
		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
1376 1377 1378 1379 1380
}

static int qeth_setup_card(struct qeth_card *card)
{

1381 1382
	QETH_DBF_TEXT(SETUP, 2, "setupcrd");
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
F
Frank Blaschka 已提交
1383 1384 1385 1386 1387 1388

	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;
1389
	card->read_or_write_problem = 0;
F
Frank Blaschka 已提交
1390 1391 1392 1393 1394 1395
	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);
1396
	mutex_init(&card->conf_mutex);
1397
	mutex_init(&card->discipline_mutex);
F
Frank Blaschka 已提交
1398 1399 1400 1401 1402 1403 1404 1405
	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
1406
	/* initial options */
F
Frank Blaschka 已提交
1407 1408 1409 1410 1411 1412 1413 1414
	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);
1415
	INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
F
Frank Blaschka 已提交
1416 1417 1418
	return 0;
}

1419 1420 1421 1422
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);
1423 1424 1425
	if (card->info.mcl_level[0])
		seq_printf(m, "qeth: %s firmware level %s\n",
			CARD_BUS_ID(card), card->info.mcl_level);
1426 1427
}

F
Frank Blaschka 已提交
1428 1429 1430 1431
static struct qeth_card *qeth_alloc_card(void)
{
	struct qeth_card *card;

1432
	QETH_DBF_TEXT(SETUP, 2, "alloccrd");
F
Frank Blaschka 已提交
1433 1434
	card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
	if (!card)
1435
		goto out;
1436
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1437
	card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1438 1439 1440
	if (!card->ip_tbd_list) {
		QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
		goto out_card;
F
Frank Blaschka 已提交
1441
	}
1442 1443 1444 1445
	if (qeth_setup_channel(&card->read))
		goto out_ip;
	if (qeth_setup_channel(&card->write))
		goto out_channel;
F
Frank Blaschka 已提交
1446
	card->options.layer2 = -1;
1447 1448
	card->qeth_service_level.seq_print = qeth_core_sl_print;
	register_service_level(&card->qeth_service_level);
F
Frank Blaschka 已提交
1449
	return card;
1450 1451 1452 1453 1454 1455 1456 1457 1458

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
1459 1460 1461 1462 1463 1464
}

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

1465
	QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
F
Frank Blaschka 已提交
1466 1467 1468

	card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
	card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1469 1470 1471 1472 1473 1474 1475 1476
	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];
1477
			card->qdio.no_in_queues = 1;
1478 1479 1480
			card->info.is_multicast_different =
				known_devices[i][QETH_MULTICAST_IND];
			qeth_get_channel_path_desc(card);
F
Frank Blaschka 已提交
1481 1482 1483 1484 1485
			return 0;
		}
		i++;
	}
	card->info.type = QETH_CARD_TYPE_UNKNOWN;
1486 1487
	dev_err(&card->gdev->dev, "The adapter hardware is of an "
		"unknown type\n");
F
Frank Blaschka 已提交
1488 1489 1490 1491 1492 1493 1494 1495 1496 1497
	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
1498
	QETH_CARD_TEXT(card, 3, "clearch");
F
Frank Blaschka 已提交
1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521
	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
1522
	QETH_CARD_TEXT(card, 3, "haltch");
F
Frank Blaschka 已提交
1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541
	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
1542
	QETH_CARD_TEXT(card, 3, "haltchs");
F
Frank Blaschka 已提交
1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556
	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
1557
	QETH_CARD_TEXT(card, 3, "clearchs");
F
Frank Blaschka 已提交
1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571
	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
1572
	QETH_CARD_TEXT(card, 3, "clhacrd");
F
Frank Blaschka 已提交
1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584

	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
1585
	QETH_CARD_TEXT(card, 3, "qdioclr");
F
Frank Blaschka 已提交
1586 1587 1588 1589
	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
1590
			rc = qdio_shutdown(CARD_DDEV(card),
F
Frank Blaschka 已提交
1591 1592
				QDIO_FLAG_CLEANUP_USING_HALT);
		else
J
Jan Glauber 已提交
1593
			rc = qdio_shutdown(CARD_DDEV(card),
F
Frank Blaschka 已提交
1594 1595
				QDIO_FLAG_CLEANUP_USING_CLEAR);
		if (rc)
C
Carsten Otte 已提交
1596
			QETH_CARD_TEXT_(card, 3, "1err%d", rc);
J
Jan Glauber 已提交
1597
		qdio_free(CARD_DDEV(card));
F
Frank Blaschka 已提交
1598 1599 1600 1601 1602 1603 1604 1605 1606
		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
1607
		QETH_CARD_TEXT_(card, 3, "2err%d", rc);
F
Frank Blaschka 已提交
1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660
	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;
}

1661
static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
F
Frank Blaschka 已提交
1662
{
1663
	QETH_DBF_TEXT(SETUP, 2, "cfgunit");
F
Frank Blaschka 已提交
1664 1665 1666 1667 1668
	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']));
1669 1670 1671 1672 1673 1674
}

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

1675 1676
	if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
	    (prcd[76] == 0xF5 || prcd[76] == 0xF6)) {
1677 1678 1679 1680 1681 1682 1683 1684
		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
1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697
}

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)
{
1698 1699
	switch (card->info.type) {
	case QETH_CARD_TYPE_IQD:
1700
		card->info.func_level =	QETH_IDX_FUNC_LEVEL_IQD;
1701 1702
		break;
	case QETH_CARD_TYPE_OSD:
1703
	case QETH_CARD_TYPE_OSN:
1704 1705 1706 1707
		card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
		break;
	default:
		break;
F
Frank Blaschka 已提交
1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719
	}
}

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;

1720
	QETH_DBF_TEXT(SETUP, 2, "idxanswr");
F
Frank Blaschka 已提交
1721 1722 1723 1724 1725 1726 1727 1728 1729
	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);
1730
	QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
F
Frank Blaschka 已提交
1731 1732 1733 1734 1735 1736
	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) {
1737
		QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1738
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
F
Frank Blaschka 已提交
1739 1740 1741 1742 1743 1744 1745 1746 1747 1748
		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;
1749
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
F
Frank Blaschka 已提交
1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765
		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
1766
	struct ccw_dev_id temp_devid;
F
Frank Blaschka 已提交
1767 1768 1769

	card = CARD_FROM_CDEV(channel->ccwdev);

1770
	QETH_DBF_TEXT(SETUP, 2, "idxactch");
F
Frank Blaschka 已提交
1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792

	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
1793 1794
	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
1795 1796 1797 1798 1799
	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);
1800
	QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
F
Frank Blaschka 已提交
1801 1802 1803 1804 1805 1806
	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) {
1807 1808
		QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
			rc);
1809
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
1810 1811 1812 1813 1814 1815 1816 1817 1818
		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) {
1819 1820 1821 1822
		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));
1823
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
F
Frank Blaschka 已提交
1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844
		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;

1845
	QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
F
Frank Blaschka 已提交
1846 1847 1848 1849 1850 1851 1852 1853

	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))) {
1854
		if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1855 1856 1857
			dev_err(&card->write.ccwdev->dev,
				"The adapter is used exclusively by another "
				"host\n");
F
Frank Blaschka 已提交
1858
		else
1859 1860 1861
			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
1862 1863 1864 1865
		goto out;
	}
	memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
	if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1866 1867 1868 1869
		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
1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882
		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;

1883
	QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
F
Frank Blaschka 已提交
1884 1885 1886 1887 1888 1889
	if (channel->state == CH_STATE_DOWN) {
		channel->state = CH_STATE_ACTIVATING;
		goto out;
	}

	card = CARD_FROM_CDEV(channel->ccwdev);
1890
	if (qeth_check_idx_response(card, iob->data))
F
Frank Blaschka 已提交
1891 1892 1893
			goto out;

	if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1894 1895
		switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
		case QETH_IDX_ACT_ERR_EXCL:
1896 1897 1898
			dev_err(&card->write.ccwdev->dev,
				"The adapter is used exclusively by another "
				"host\n");
1899 1900
			break;
		case QETH_IDX_ACT_ERR_AUTH:
1901
		case QETH_IDX_ACT_ERR_AUTH_USER:
1902 1903
			dev_err(&card->read.ccwdev->dev,
				"Setting the device online failed because of "
1904
				"insufficient authorization\n");
1905 1906
			break;
		default:
1907 1908 1909
			QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
				" negative reply\n",
				dev_name(&card->read.ccwdev->dev));
1910
		}
1911 1912
		QETH_CARD_TEXT_(card, 2, "idxread%c",
			QETH_IDX_ACT_CAUSE_CODE(iob->data));
F
Frank Blaschka 已提交
1913 1914 1915 1916
		goto out;
	}

/**
1917 1918 1919
 *  * temporary fix for microcode bug
 *   * to revert it,replace OR by AND
 *    */
F
Frank Blaschka 已提交
1920
	if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1921
	     (card->info.type == QETH_CARD_TYPE_OSD))
F
Frank Blaschka 已提交
1922 1923 1924 1925
		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)) {
1926 1927 1928 1929
		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
1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955
		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);
1956
	QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
F
Frank Blaschka 已提交
1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968
}
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;
1969
	unsigned long timeout, event_timeout;
1970
	struct qeth_ipa_cmd *cmd;
F
Frank Blaschka 已提交
1971

C
Carsten Otte 已提交
1972
	QETH_CARD_TEXT(card, 2, "sendctl");
F
Frank Blaschka 已提交
1973

1974 1975 1976 1977
	if (card->read_or_write_problem) {
		qeth_release_buffer(iob->channel, iob);
		return -EIO;
	}
F
Frank Blaschka 已提交
1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991
	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);
1992
	QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
F
Frank Blaschka 已提交
1993 1994 1995 1996 1997

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

	if (IS_IPA(iob->data))
1998
		event_timeout = QETH_IPA_TIMEOUT;
F
Frank Blaschka 已提交
1999
	else
2000 2001
		event_timeout = QETH_TIMEOUT;
	timeout = jiffies + event_timeout;
F
Frank Blaschka 已提交
2002

C
Carsten Otte 已提交
2003
	QETH_CARD_TEXT(card, 6, "noirqpnd");
F
Frank Blaschka 已提交
2004 2005 2006 2007 2008
	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) {
2009 2010 2011
		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
2012
		QETH_CARD_TEXT_(card, 2, " err%d", rc);
F
Frank Blaschka 已提交
2013 2014 2015 2016 2017 2018 2019 2020 2021
		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;
	}
2022 2023 2024 2025 2026 2027 2028

	/* 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,
2029
		    atomic_read(&reply->received), event_timeout))
2030 2031 2032 2033 2034 2035 2036 2037 2038
			goto time_err;
	} else {
		while (!atomic_read(&reply->received)) {
			if (time_after(jiffies, timeout))
				goto time_err;
			cpu_relax();
		};
	}

2039 2040
	if (reply->rc == -EIO)
		goto error;
2041 2042 2043 2044 2045
	rc = reply->rc;
	qeth_put_reply(reply);
	return rc;

time_err:
2046
	reply->rc = -ETIME;
2047 2048 2049 2050
	spin_lock_irqsave(&reply->card->lock, flags);
	list_del_init(&reply->list);
	spin_unlock_irqrestore(&reply->card->lock, flags);
	atomic_inc(&reply->received);
2051
error:
2052 2053 2054
	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
2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065
	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;

2066
	QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
F
Frank Blaschka 已提交
2067 2068 2069 2070 2071

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.cm_filter_r,
	       QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
2072
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
2073 2074 2075 2076 2077 2078 2079 2080
	return 0;
}

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

2081
	QETH_DBF_TEXT(SETUP, 2, "cmenable");
F
Frank Blaschka 已提交
2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100

	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;

2101
	QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
F
Frank Blaschka 已提交
2102 2103 2104 2105 2106

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.cm_connection_r,
	       QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
2107
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
2108 2109 2110 2111 2112 2113 2114 2115
	return 0;
}

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

2116
	QETH_DBF_TEXT(SETUP, 2, "cmsetup");
F
Frank Blaschka 已提交
2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138

	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;
2139
	case QETH_CARD_TYPE_OSD:
F
Frank Blaschka 已提交
2140 2141 2142 2143 2144 2145 2146
		switch (card->info.link_type) {
		case QETH_LINK_TYPE_HSTR:
		case QETH_LINK_TYPE_LANE_TR:
			return 2000;
		default:
			return 1492;
		}
2147 2148 2149
	case QETH_CARD_TYPE_OSM:
	case QETH_CARD_TYPE_OSX:
		return 1492;
F
Frank Blaschka 已提交
2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173
	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) {
2174 2175 2176
	case QETH_CARD_TYPE_OSD:
	case QETH_CARD_TYPE_OSM:
	case QETH_CARD_TYPE_OSX:
F
Frank Blaschka 已提交
2177 2178
	case QETH_CARD_TYPE_IQD:
		return ((mtu >= 576) &&
2179
			(mtu <= card->info.max_mtu));
F
Frank Blaschka 已提交
2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195
	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;

2196
	QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
F
Frank Blaschka 已提交
2197 2198 2199 2200 2201

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.ulp_filter_r,
	       QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
2202
	if (card->info.type == QETH_CARD_TYPE_IQD) {
F
Frank Blaschka 已提交
2203 2204 2205 2206
		memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
		mtu = qeth_get_mtu_outof_framesize(framesize);
		if (!mtu) {
			iob->rc = -EINVAL;
2207
			QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
2208 2209
			return 0;
		}
2210 2211 2212 2213 2214 2215 2216 2217
		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
2218
		card->info.initial_mtu = mtu;
2219
		card->info.max_mtu = mtu;
F
Frank Blaschka 已提交
2220 2221 2222
		card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
	} else {
		card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
2223 2224
		card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
			iob->data);
F
Frank Blaschka 已提交
2225 2226 2227 2228 2229 2230 2231 2232 2233 2234
		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;
2235
	QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2236
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
2237 2238 2239 2240 2241 2242 2243 2244 2245 2246
	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*/
2247
	QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
F
Frank Blaschka 已提交
2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278

	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;
2279
	int rc = 0;
F
Frank Blaschka 已提交
2280

2281
	QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
F
Frank Blaschka 已提交
2282 2283 2284 2285 2286

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.ulp_connection_r,
	       QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
2287 2288 2289 2290 2291
	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");
2292
		iob->rc = -EMLINK;
2293
	}
2294
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2295
	return rc;
F
Frank Blaschka 已提交
2296 2297 2298 2299 2300 2301 2302 2303 2304
}

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

2305
	QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
F
Frank Blaschka 已提交
2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325

	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;
}

2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356
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
2357 2358 2359 2360
static int qeth_alloc_qdio_buffers(struct qeth_card *card)
{
	int i, j;

2361
	QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
F
Frank Blaschka 已提交
2362 2363 2364 2365 2366

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

2367
	card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2368
				   GFP_KERNEL);
F
Frank Blaschka 已提交
2369 2370
	if (!card->qdio.in_q)
		goto out_nomem;
2371 2372
	QETH_DBF_TEXT(SETUP, 2, "inq");
	QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
F
Frank Blaschka 已提交
2373 2374
	memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
	/* give inbound qeth_qdio_buffers their qdio_buffers */
2375
	for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
F
Frank Blaschka 已提交
2376 2377
		card->qdio.in_q->bufs[i].buffer =
			&card->qdio.in_q->qdio_bufs[i];
2378 2379
		card->qdio.in_q->bufs[i].rx_skb = NULL;
	}
F
Frank Blaschka 已提交
2380 2381 2382
	/* inbound buffer pool */
	if (qeth_alloc_buffer_pool(card))
		goto out_freeinq;
2383

F
Frank Blaschka 已提交
2384 2385
	/* outbound */
	card->qdio.out_qs =
2386
		kzalloc(card->qdio.no_out_queues *
F
Frank Blaschka 已提交
2387 2388 2389 2390
			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) {
2391
		card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2392
					       GFP_KERNEL);
F
Frank Blaschka 已提交
2393 2394
		if (!card->qdio.out_qs[i])
			goto out_freeoutq;
2395 2396
		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
2397 2398 2399
		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) {
2400 2401 2402
			BUG_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
			if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
				goto out_freeoutqbufs;
F
Frank Blaschka 已提交
2403 2404
		}
	}
2405 2406 2407 2408 2409

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

F
Frank Blaschka 已提交
2410 2411
	return 0;

2412 2413 2414 2415 2416 2417 2418
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
2419
out_freeoutq:
2420
	while (i > 0) {
F
Frank Blaschka 已提交
2421
		kfree(card->qdio.out_qs[--i]);
2422 2423
		qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
	}
F
Frank Blaschka 已提交
2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463
	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)
{
2464
	QETH_DBF_TEXT(SETUP, 3, "qdioact");
J
Jan Glauber 已提交
2465
	return qdio_activate(CARD_DDEV(card));
F
Frank Blaschka 已提交
2466 2467 2468 2469 2470 2471 2472
}

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

2473
	QETH_DBF_TEXT(SETUP, 2, "dmact");
F
Frank Blaschka 已提交
2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489

	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;

2490
	QETH_DBF_TEXT(SETUP, 2, "mpcinit");
F
Frank Blaschka 已提交
2491 2492 2493

	rc = qeth_issue_next_read(card);
	if (rc) {
2494
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
2495 2496 2497 2498
		return rc;
	}
	rc = qeth_cm_enable(card);
	if (rc) {
2499
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
F
Frank Blaschka 已提交
2500 2501 2502 2503
		goto out_qdio;
	}
	rc = qeth_cm_setup(card);
	if (rc) {
2504
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
F
Frank Blaschka 已提交
2505 2506 2507 2508
		goto out_qdio;
	}
	rc = qeth_ulp_enable(card);
	if (rc) {
2509
		QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
F
Frank Blaschka 已提交
2510 2511 2512 2513
		goto out_qdio;
	}
	rc = qeth_ulp_setup(card);
	if (rc) {
2514
		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
F
Frank Blaschka 已提交
2515 2516 2517 2518
		goto out_qdio;
	}
	rc = qeth_alloc_qdio_buffers(card);
	if (rc) {
2519
		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
F
Frank Blaschka 已提交
2520 2521 2522 2523
		goto out_qdio;
	}
	rc = qeth_qdio_establish(card);
	if (rc) {
2524
		QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
F
Frank Blaschka 已提交
2525 2526 2527 2528 2529
		qeth_free_qdio_buffers(card);
		goto out_qdio;
	}
	rc = qeth_qdio_activate(card);
	if (rc) {
2530
		QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
F
Frank Blaschka 已提交
2531 2532 2533 2534
		goto out_qdio;
	}
	rc = qeth_dm_act(card);
	if (rc) {
2535
		QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
F
Frank Blaschka 已提交
2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554
		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;
2555
	dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
F
Frank Blaschka 已提交
2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568
	       "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])
2569
		dev_info(&card->gdev->dev, "Device is a%s "
F
Frank Blaschka 已提交
2570 2571 2572 2573 2574 2575 2576 2577
		       "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
2578
		dev_info(&card->gdev->dev, "Device is a%s "
F
Frank Blaschka 已提交
2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589
		       "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) {
2590 2591 2592
	case QETH_CARD_TYPE_OSD:
	case QETH_CARD_TYPE_OSM:
	case QETH_CARD_TYPE_OSX:
F
Frank Blaschka 已提交
2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606
		/* 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:
2607 2608
		if ((card->info.guestlan) ||
		    (card->info.mcl_level[0] & 0x80)) {
F
Frank Blaschka 已提交
2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633
			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
2634
	QETH_CARD_TEXT(card, 5, "inwrklst");
F
Frank Blaschka 已提交
2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672

	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) {
2673
			page = alloc_page(GFP_ATOMIC);
F
Frank Blaschka 已提交
2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693
			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;

2694 2695 2696 2697 2698 2699
	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
2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715
	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)
2716
			buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
F
Frank Blaschka 已提交
2717
		else
2718 2719
			buf->buffer->element[i].eflags = 0;
		buf->buffer->element[i].sflags = 0;
F
Frank Blaschka 已提交
2720 2721 2722 2723 2724 2725 2726 2727 2728
	}
	return 0;
}

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

2729
	QETH_DBF_TEXT(SETUP, 2, "initqdqs");
F
Frank Blaschka 已提交
2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740

	/* 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
2741
		     card->qdio.in_buf_pool.buf_count - 1);
F
Frank Blaschka 已提交
2742
	if (rc) {
2743
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
2744 2745
		return rc;
	}
2746 2747 2748 2749 2750 2751 2752

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

F
Frank Blaschka 已提交
2753 2754 2755 2756 2757 2758
	/* 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],
2759 2760
					card->qdio.out_qs[i]->bufs[j],
					QETH_QDIO_BUF_EMPTY);
F
Frank Blaschka 已提交
2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835
		}
		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
2836
	QETH_CARD_TEXT(card, 4, "sendipa");
F
Frank Blaschka 已提交
2837 2838 2839 2840 2841 2842 2843 2844 2845

	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);
2846 2847
	rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
						iob, reply_cb, reply_param);
2848 2849 2850 2851
	if (rc == -ETIME) {
		qeth_clear_ipacmd_list(card);
		qeth_schedule_recovery(card);
	}
F
Frank Blaschka 已提交
2852 2853 2854 2855 2856 2857 2858
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);

int qeth_send_startlan(struct qeth_card *card)
{
	int rc;
2859
	struct qeth_cmd_buffer *iob;
F
Frank Blaschka 已提交
2860

2861
	QETH_DBF_TEXT(SETUP, 2, "strtlan");
F
Frank Blaschka 已提交
2862

2863 2864
	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
2865 2866 2867 2868 2869 2870 2871 2872 2873
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_startlan);

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

C
Carsten Otte 已提交
2874
	QETH_CARD_TEXT(card, 4, "defadpcb");
F
Frank Blaschka 已提交
2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888

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

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

C
Carsten Otte 已提交
2889
	QETH_CARD_TEXT(card, 3, "quyadpcb");
F
Frank Blaschka 已提交
2890 2891

	cmd = (struct qeth_ipa_cmd *) data;
2892
	if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
F
Frank Blaschka 已提交
2893 2894
		card->info.link_type =
		      cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2895 2896
		QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
	}
F
Frank Blaschka 已提交
2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924
	card->options.adp.supported_funcs =
		cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
	return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
}

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

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

	return iob;
}
EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd);

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

C
Carsten Otte 已提交
2925
	QETH_CARD_TEXT(card, 3, "queryadp");
F
Frank Blaschka 已提交
2926 2927 2928 2929 2930 2931 2932
	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);

2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948
static int qeth_query_ipassists_cb(struct qeth_card *card,
		struct qeth_reply *reply, unsigned long data)
{
	struct qeth_ipa_cmd *cmd;

	QETH_DBF_TEXT(SETUP, 2, "qipasscb");

	cmd = (struct qeth_ipa_cmd *) data;
	if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
		card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
		card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
	} else {
		card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
		card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
	}
	QETH_DBF_TEXT(SETUP, 2, "suppenbl");
2949 2950
	QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_supported);
	QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_enabled);
2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 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 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068
	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;
	int level, rc;

	tid->chpid = card->info.chpid;
	ccw_device_get_id(CARD_RDEV(card), &ccwid);
	tid->ssid = ccwid.ssid;
	tid->devno = ccwid.devno;
	if (!info)
		return;

	rc = stsi(NULL, 0, 0, 0);
	if (rc == -ENOSYS)
		level = rc;
	else
		level = (((unsigned int) rc) >> 28);

	if ((level >= 2) && (stsi(info222, 2, 2, 2) != -ENOSYS))
		tid->lparnr = info222->lpar_number;

	if ((level >= 3) && (stsi(info322, 3, 2, 2) != -ENOSYS)) {
		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);

3069 3070
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
3071
{
J
Jan Glauber 已提交
3072
	if (qdio_error) {
C
Carsten Otte 已提交
3073
		QETH_CARD_TEXT(card, 2, dbftext);
C
Carsten Otte 已提交
3074
		QETH_CARD_TEXT_(card, 2, " F15=%02X",
3075
			       buf->element[15].sflags);
C
Carsten Otte 已提交
3076
		QETH_CARD_TEXT_(card, 2, " F14=%02X",
3077
			       buf->element[14].sflags);
C
Carsten Otte 已提交
3078
		QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3079
		if ((buf->element[15].sflags) == 0x12) {
3080 3081 3082 3083
			card->stats.rx_dropped++;
			return 0;
		} else
			return 1;
F
Frank Blaschka 已提交
3084 3085 3086 3087 3088
	}
	return 0;
}
EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);

3089 3090 3091 3092 3093 3094 3095 3096 3097
void qeth_buffer_reclaim_work(struct work_struct *work)
{
	struct qeth_card *card = container_of(work, struct qeth_card,
		buffer_reclaim_work.work);

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

F
Frank Blaschka 已提交
3098 3099 3100
void qeth_queue_input_buffer(struct qeth_card *card, int index)
{
	struct qeth_qdio_q *queue = card->qdio.in_q;
3101
	struct list_head *lh;
F
Frank Blaschka 已提交
3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132
	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);
		}

3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146
		if (!count) {
			i = 0;
			list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
				i++;
			if (i == card->qdio.in_buf_pool.buf_count) {
				QETH_CARD_TEXT(card, 2, "qsarbw");
				card->reclaim_index = index;
				schedule_delayed_work(
					&card->buffer_reclaim_work,
					QETH_RECLAIM_WORK_TIME);
			}
			return;
		}

F
Frank Blaschka 已提交
3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158
		/*
		 * according to old code it should be avoided to requeue all
		 * 128 buffers in order to benefit from PCI avoidance.
		 * this function keeps at least one buffer (the buffer at
		 * 'index') un-requeued -> this buffer is the first buffer that
		 * will be requeued the next time
		 */
		if (card->options.performance_stats) {
			card->perf_stats.inbound_do_qdio_cnt++;
			card->perf_stats.inbound_do_qdio_start_time =
				qeth_get_micros();
		}
J
Jan Glauber 已提交
3159 3160
		rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
			     queue->next_buf_to_init, count);
F
Frank Blaschka 已提交
3161 3162 3163 3164 3165
		if (card->options.performance_stats)
			card->perf_stats.inbound_do_qdio_time +=
				qeth_get_micros() -
				card->perf_stats.inbound_do_qdio_start_time;
		if (rc) {
C
Carsten Otte 已提交
3166
			QETH_CARD_TEXT(card, 2, "qinberr");
F
Frank Blaschka 已提交
3167 3168 3169 3170 3171 3172 3173 3174
		}
		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
3175
		struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
F
Frank Blaschka 已提交
3176
{
3177
	int sbalf15 = buffer->buffer->element[15].sflags;
F
Frank Blaschka 已提交
3178

C
Carsten Otte 已提交
3179
	QETH_CARD_TEXT(card, 6, "hdsnderr");
3180 3181 3182 3183 3184 3185 3186
	if (card->info.type == QETH_CARD_TYPE_IQD) {
		if (sbalf15 == 0) {
			qdio_err = 0;
		} else {
			qdio_err = 1;
		}
	}
3187
	qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3188 3189

	if (!qdio_err)
F
Frank Blaschka 已提交
3190
		return QETH_SEND_ERROR_NONE;
3191 3192 3193 3194

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

C
Carsten Otte 已提交
3195 3196
	QETH_CARD_TEXT(card, 1, "lnkfail");
	QETH_CARD_TEXT_(card, 1, "%04x %02x",
3197 3198
		       (u16)qdio_err, (u8)sbalf15);
	return QETH_SEND_ERROR_LINK_FAILURE;
F
Frank Blaschka 已提交
3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210
}

/*
 * 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
3211
			QETH_CARD_TEXT(queue->card, 6, "np->pack");
F
Frank Blaschka 已提交
3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233
			if (queue->card->options.performance_stats)
				queue->card->perf_stats.sc_dp_p++;
			queue->do_pack = 1;
		}
	}
}

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

	if (queue->do_pack) {
		if (atomic_read(&queue->used_buffers)
		    <= QETH_LOW_WATERMARK_PACK) {
			/* switch PACKING -> non-PACKING */
C
Carsten Otte 已提交
3234
			QETH_CARD_TEXT(queue->card, 6, "pack->np");
F
Frank Blaschka 已提交
3235 3236 3237 3238
			if (queue->card->options.performance_stats)
				queue->card->perf_stats.sc_p_dp++;
			queue->do_pack = 0;
			/* flush packing buffers */
3239
			buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3240 3241 3242 3243
			if ((atomic_read(&buffer->state) ==
						QETH_QDIO_BUF_EMPTY) &&
			    (buffer->next_element_to_fill > 0)) {
				atomic_set(&buffer->state,
3244
					   QETH_QDIO_BUF_PRIMED);
F
Frank Blaschka 已提交
3245 3246 3247 3248 3249 3250 3251 3252 3253 3254
				flush_count++;
				queue->next_buf_to_fill =
					(queue->next_buf_to_fill + 1) %
					QDIO_MAX_BUFFERS_PER_Q;
			}
		}
	}
	return flush_count;
}

3255

F
Frank Blaschka 已提交
3256 3257 3258 3259 3260 3261 3262 3263 3264
/*
 * 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;

3265
	buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276
	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
3277 3278
static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
			       int count)
F
Frank Blaschka 已提交
3279 3280 3281 3282 3283 3284 3285
{
	struct qeth_qdio_out_buffer *buf;
	int rc;
	int i;
	unsigned int qdio_flags;

	for (i = index; i < index + count; ++i) {
3286 3287
		int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
		buf = queue->bufs[bidx];
3288 3289
		buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
				SBAL_EFLAGS_LAST_ENTRY;
F
Frank Blaschka 已提交
3290

3291 3292 3293
		if (queue->bufstates)
			queue->bufstates[bidx].user = buf;

F
Frank Blaschka 已提交
3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304
		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);
3305
				buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
F
Frank Blaschka 已提交
3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317
			}
		} 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);
3318
				buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
F
Frank Blaschka 已提交
3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332
			}
		}
	}

	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
3333
		     queue->queue_no, index, count);
F
Frank Blaschka 已提交
3334 3335 3336 3337
	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;
3338
	atomic_add(count, &queue->used_buffers);
F
Frank Blaschka 已提交
3339
	if (rc) {
3340 3341
		queue->card->stats.tx_errors += count;
		/* ignore temporary SIGA errors without busy condition */
3342
		if (rc == -ENOBUFS)
3343
			return;
C
Carsten Otte 已提交
3344
		QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3345 3346 3347
		QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
		QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
		QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
C
Carsten Otte 已提交
3348
		QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3349

F
Frank Blaschka 已提交
3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392
		/* 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
3393
				qeth_flush_buffers(queue, index, flush_cnt);
F
Frank Blaschka 已提交
3394 3395 3396 3397 3398
			atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
		}
	}
}

3399 3400 3401 3402 3403
void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
		unsigned long card_ptr)
{
	struct qeth_card *card = (struct qeth_card *)card_ptr;

3404
	if (card->dev && (card->dev->flags & IFF_UP))
3405 3406 3407 3408
		napi_schedule(&card->napi);
}
EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);

3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507
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;
}

3508
void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3509
		unsigned int queue, int first_elem, int count,
3510 3511 3512 3513
		unsigned long card_ptr)
{
	struct qeth_card *card = (struct qeth_card *)card_ptr;

3514 3515 3516 3517 3518 3519
	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)
3520
		qeth_schedule_recovery(card);
3521 3522


3523 3524 3525
}
EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);

J
Jan Glauber 已提交
3526 3527 3528
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
3529 3530 3531 3532 3533 3534
{
	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
3535
	QETH_CARD_TEXT(card, 6, "qdouhdl");
3536
	if (qdio_error & QDIO_ERROR_FATAL) {
C
Carsten Otte 已提交
3537
		QETH_CARD_TEXT(card, 2, "achkcond");
J
Jan Glauber 已提交
3538 3539 3540
		netif_stop_queue(card->dev);
		qeth_schedule_recovery(card);
		return;
F
Frank Blaschka 已提交
3541 3542 3543 3544 3545 3546 3547
	}
	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) {
3548 3549
		int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
		buffer = queue->bufs[bidx];
3550
		qeth_handle_send_error(card, buffer, qdio_error);
3551 3552 3553 3554

		if (queue->bufstates &&
		    (queue->bufstates[bidx].flags &
		     QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3555 3556 3557 3558 3559 3560 3561 3562 3563
			BUG_ON(card->options.cq != QETH_CQ_ENABLED);

			if (atomic_cmpxchg(&buffer->state,
					   QETH_QDIO_BUF_PRIMED,
					   QETH_QDIO_BUF_PENDING) ==
				QETH_QDIO_BUF_PRIMED) {
				qeth_notify_skbs(queue, buffer,
						 TX_NOTIFY_PENDING);
			}
3564 3565
			buffer->aob = queue->bufstates[bidx].aob;
			QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3566
			QETH_CARD_TEXT(queue->card, 5, "aob");
3567 3568 3569
			QETH_CARD_TEXT_(queue->card, 5, "%lx",
					virt_to_phys(buffer->aob));
			BUG_ON(bidx < 0 || bidx >= QDIO_MAX_BUFFERS_PER_Q);
3570 3571
			if (qeth_init_qdio_out_buf(queue, bidx)) {
				QETH_CARD_TEXT(card, 2, "outofbuf");
3572
				qeth_schedule_recovery(card);
3573
			}
3574
		} else {
3575 3576 3577 3578 3579 3580 3581 3582
			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);
			}

3583 3584 3585 3586
			qeth_clear_output_buffer(queue, buffer,
						QETH_QDIO_BUF_EMPTY);
		}
		qeth_cleanup_handled_pending(queue, bidx, 0);
F
Frank Blaschka 已提交
3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602
	}
	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)
{
3603 3604
	if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
		     card->info.type == QETH_CARD_TYPE_OSX))
F
Frank Blaschka 已提交
3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641
		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)
{
3642 3643 3644
	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
3645

3646
	elements_needed += skb_shinfo(skb)->nr_frags;
F
Frank Blaschka 已提交
3647
	if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3648
		QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
F
Frank Blaschka 已提交
3649 3650 3651 3652 3653 3654 3655 3656
			"(Number=%d / Length=%d). Discarded.\n",
			(elements_needed+elems), skb->len);
		return 0;
	}
	return elements_needed;
}
EXPORT_SYMBOL_GPL(qeth_get_elements_no);

3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675
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
3676
static inline void __qeth_fill_buffer(struct sk_buff *skb,
3677 3678
	struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
	int offset)
F
Frank Blaschka 已提交
3679
{
3680
	int length = skb->len - skb->data_len;
F
Frank Blaschka 已提交
3681 3682 3683
	int length_here;
	int element;
	char *data;
3684 3685
	int first_lap, cnt;
	struct skb_frag_struct *frag;
F
Frank Blaschka 已提交
3686 3687 3688 3689 3690

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

3691 3692
	if (offset >= 0) {
		data = skb->data + offset;
3693
		length -= offset;
3694 3695 3696
		first_lap = 0;
	}

F
Frank Blaschka 已提交
3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707
	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)
3708
				if (skb_shinfo(skb)->nr_frags)
3709 3710
					buffer->element[element].eflags =
						SBAL_EFLAGS_FIRST_FRAG;
3711
				else
3712
					buffer->element[element].eflags = 0;
F
Frank Blaschka 已提交
3713
			else
3714 3715
				buffer->element[element].eflags =
				    SBAL_EFLAGS_MIDDLE_FRAG;
F
Frank Blaschka 已提交
3716 3717
		} else {
			if (first_lap)
3718 3719
				buffer->element[element].eflags =
				    SBAL_EFLAGS_FIRST_FRAG;
F
Frank Blaschka 已提交
3720
			else
3721 3722
				buffer->element[element].eflags =
				    SBAL_EFLAGS_MIDDLE_FRAG;
F
Frank Blaschka 已提交
3723 3724 3725 3726 3727
		}
		data += length_here;
		element++;
		first_lap = 0;
	}
3728 3729 3730

	for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
		frag = &skb_shinfo(skb)->frags[cnt];
3731 3732
		buffer->element[element].addr = (char *)
			page_to_phys(skb_frag_page(frag))
3733 3734
			+ frag->page_offset;
		buffer->element[element].length = frag->size;
3735
		buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
3736 3737 3738
		element++;
	}

3739 3740
	if (buffer->element[element - 1].eflags)
		buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
F
Frank Blaschka 已提交
3741 3742 3743
	*next_element_to_fill = element;
}

F
Frank Blaschka 已提交
3744
static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3745 3746
		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
3747 3748 3749 3750 3751 3752 3753 3754 3755
{
	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 ....*/
3756
	if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
F
Frank Blaschka 已提交
3757 3758
		int element = buf->next_element_to_fill;

3759 3760
		hdr_len = sizeof(struct qeth_hdr_tso) +
			((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
F
Frank Blaschka 已提交
3761 3762 3763
		/*fill first buffer entry only with header information */
		buffer->element[element].addr = skb->data;
		buffer->element[element].length = hdr_len;
3764
		buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
F
Frank Blaschka 已提交
3765 3766 3767 3768 3769
		buf->next_element_to_fill++;
		skb->data += hdr_len;
		skb->len  -= hdr_len;
		large_send = 1;
	}
3770 3771 3772 3773 3774 3775

	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;
3776
		buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3777 3778 3779 3780
		buf->is_header[element] = 1;
		buf->next_element_to_fill++;
	}

3781 3782
	__qeth_fill_buffer(skb, buffer, large_send,
		(int *)&buf->next_element_to_fill, offset);
F
Frank Blaschka 已提交
3783 3784

	if (!queue->do_pack) {
C
Carsten Otte 已提交
3785
		QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
F
Frank Blaschka 已提交
3786 3787 3788 3789
		/* 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
3790
		QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
F
Frank Blaschka 已提交
3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808
		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
3809
		int offset, int hd_len)
F
Frank Blaschka 已提交
3810 3811 3812 3813 3814 3815 3816 3817 3818
{
	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;
3819
	buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3820 3821 3822 3823 3824 3825
	/*
	 * 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
3826
	queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
F
Frank Blaschka 已提交
3827 3828
					  QDIO_MAX_BUFFERS_PER_Q;
	atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
F
Frank Blaschka 已提交
3829 3830
	qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
	qeth_flush_buffers(queue, index, 1);
F
Frank Blaschka 已提交
3831 3832 3833 3834 3835 3836 3837 3838 3839
	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
3840
		int elements_needed)
F
Frank Blaschka 已提交
3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852
{
	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;
3853
	buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865
	/*
	 * 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
3866 3867 3868 3869 3870 3871 3872 3873 3874
		/* 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;
3875
			buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3876 3877 3878 3879 3880
			/* 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
3881
							   flush_count);
F
Frank Blaschka 已提交
3882
				atomic_set(&queue->state,
F
Frank Blaschka 已提交
3883
						QETH_OUT_Q_UNLOCKED);
F
Frank Blaschka 已提交
3884
				return -EBUSY;
F
Frank Blaschka 已提交
3885 3886 3887
			}
		}
	}
F
Frank Blaschka 已提交
3888
	tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
F
Frank Blaschka 已提交
3889 3890 3891 3892
	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
3893
		qeth_flush_buffers(queue, start_index, flush_count);
F
Frank Blaschka 已提交
3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913
	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
3914
			qeth_flush_buffers(queue, start_index, flush_count);
F
Frank Blaschka 已提交
3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929
	}
	/* 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
3930
	QETH_CARD_TEXT(card, 4, "prmadpcb");
F
Frank Blaschka 已提交
3931 3932 3933 3934 3935 3936

	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
3937
		QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
F
Frank Blaschka 已提交
3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950
		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
3951
	QETH_CARD_TEXT(card, 4, "setprom");
F
Frank Blaschka 已提交
3952 3953 3954 3955 3956 3957 3958 3959 3960

	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
3961
	QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
F
Frank Blaschka 已提交
3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975

	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];

3976
	card = dev->ml_priv;
F
Frank Blaschka 已提交
3977

C
Carsten Otte 已提交
3978
	QETH_CARD_TEXT(card, 4, "chgmtu");
F
Frank Blaschka 已提交
3979
	sprintf(dbf_text, "%8x", new_mtu);
C
Carsten Otte 已提交
3980
	QETH_CARD_TEXT(card, 4, dbf_text);
F
Frank Blaschka 已提交
3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997

	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;

3998
	card = dev->ml_priv;
F
Frank Blaschka 已提交
3999

C
Carsten Otte 已提交
4000
	QETH_CARD_TEXT(card, 5, "getstat");
F
Frank Blaschka 已提交
4001 4002 4003 4004 4005 4006 4007 4008 4009 4010

	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
4011
	QETH_CARD_TEXT(card, 4, "chgmaccb");
F
Frank Blaschka 已提交
4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030

	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
4031
	QETH_CARD_TEXT(card, 4, "chgmac");
F
Frank Blaschka 已提交
4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045

	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
4046 4047 4048 4049 4050 4051
static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
		struct qeth_reply *reply, unsigned long data)
{
	struct qeth_ipa_cmd *cmd;
	struct qeth_set_access_ctrl *access_ctrl_req;

C
Carsten Otte 已提交
4052
	QETH_CARD_TEXT(card, 4, "setaccb");
E
Einar Lueck 已提交
4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133

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

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

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

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

		/* ensure isolation mode is "none" */
		card->options.isolation = ISOLATION_MODE_NONE;
		break;
	}
	}
	qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
4134
	return 0;
E
Einar Lueck 已提交
4135 4136 4137 4138 4139 4140 4141 4142 4143 4144
}

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

C
Carsten Otte 已提交
4145
	QETH_CARD_TEXT(card, 4, "setacctl");
E
Einar Lueck 已提交
4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166

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

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

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

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

C
Carsten Otte 已提交
4167
	QETH_CARD_TEXT(card, 4, "setactlo");
E
Einar Lueck 已提交
4168

4169 4170 4171
	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
4172 4173 4174 4175
		rc = qeth_setadpparms_set_access_ctrl(card,
			card->options.isolation);
		if (rc) {
			QETH_DBF_MESSAGE(3,
4176
				"IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
E
Einar Lueck 已提交
4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190
				card->gdev->dev.kobj.name,
				rc);
		}
	} else if (card->options.isolation != ISOLATION_MODE_NONE) {
		card->options.isolation = ISOLATION_MODE_NONE;

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

F
Frank Blaschka 已提交
4191 4192 4193 4194
void qeth_tx_timeout(struct net_device *dev)
{
	struct qeth_card *card;

4195
	card = dev->ml_priv;
C
Carsten Otte 已提交
4196
	QETH_CARD_TEXT(card, 4, "txtimeo");
F
Frank Blaschka 已提交
4197 4198 4199 4200 4201 4202 4203
	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)
{
4204
	struct qeth_card *card = dev->ml_priv;
F
Frank Blaschka 已提交
4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274
	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
4275
	QETH_CARD_TEXT(card, 4, "sendsnmp");
F
Frank Blaschka 已提交
4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299

	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
4300
	QETH_CARD_TEXT(card, 3, "snpcmdcb");
F
Frank Blaschka 已提交
4301 4302 4303 4304 4305 4306 4307

	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
4308
		QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
F
Frank Blaschka 已提交
4309 4310 4311 4312 4313
		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
4314
		QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
F
Frank Blaschka 已提交
4315 4316 4317 4318 4319 4320 4321 4322 4323 4324
		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
4325
		QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4326
		cmd->hdr.return_code = IPA_RC_ENOMEM;
F
Frank Blaschka 已提交
4327 4328
		return 0;
	}
C
Carsten Otte 已提交
4329
	QETH_CARD_TEXT_(card, 4, "snore%i",
F
Frank Blaschka 已提交
4330
		       cmd->data.setadapterparms.hdr.used_total);
C
Carsten Otte 已提交
4331
	QETH_CARD_TEXT_(card, 4, "sseqn%i",
F
Frank Blaschka 已提交
4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344
		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
4345
		QETH_CARD_TEXT_(card, 4, "srtot%i",
F
Frank Blaschka 已提交
4346
			       cmd->data.setadapterparms.hdr.used_total);
C
Carsten Otte 已提交
4347
		QETH_CARD_TEXT_(card, 4, "srseq%i",
F
Frank Blaschka 已提交
4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363
			       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
4364
	QETH_CARD_TEXT(card, 3, "snmpcmd");
F
Frank Blaschka 已提交
4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375

	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;
4376 4377
	ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
	if (IS_ERR(ureq)) {
C
Carsten Otte 已提交
4378
		QETH_CARD_TEXT(card, 2, "snmpnome");
4379
		return PTR_ERR(ureq);
F
Frank Blaschka 已提交
4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395
	}
	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)
4396
		QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
F
Frank Blaschka 已提交
4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408
			   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);

4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 4505 4506
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
4507 4508 4509 4510 4511 4512 4513 4514 4515 4516
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;
	}
}

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
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);
4544 4545
	if (ddev_offline)
		qeth_configure_blkt_default(card, prcd);
4546 4547 4548 4549 4550 4551
	kfree(prcd);

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

4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565
	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;
	}


4566 4567 4568 4569 4570 4571 4572
out_offline:
	if (ddev_offline == 1)
		ccw_device_set_offline(ddev);
out:
	return;
}

4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590
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
4591 4592 4593 4594 4595
static int qeth_qdio_establish(struct qeth_card *card)
{
	struct qdio_initialize init_data;
	char *qib_param_field;
	struct qdio_buffer **in_sbal_ptrs;
4596
	void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
F
Frank Blaschka 已提交
4597 4598 4599 4600
	struct qdio_buffer **out_sbal_ptrs;
	int i, j, k;
	int rc = 0;

4601
	QETH_DBF_TEXT(SETUP, 2, "qdioest");
F
Frank Blaschka 已提交
4602 4603 4604

	qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
			      GFP_KERNEL);
4605 4606 4607 4608
	if (!qib_param_field) {
		rc =  -ENOMEM;
		goto out_free_nothing;
	}
F
Frank Blaschka 已提交
4609 4610 4611 4612

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

4613
	in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4614
			       QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
F
Frank Blaschka 已提交
4615 4616
			       GFP_KERNEL);
	if (!in_sbal_ptrs) {
4617 4618
		rc = -ENOMEM;
		goto out_free_qib_param;
F
Frank Blaschka 已提交
4619
	}
4620
	for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
F
Frank Blaschka 已提交
4621 4622
		in_sbal_ptrs[i] = (struct qdio_buffer *)
			virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4623
	}
F
Frank Blaschka 已提交
4624

4625 4626
	queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
				   GFP_KERNEL);
4627 4628 4629 4630
	if (!queue_start_poll) {
		rc = -ENOMEM;
		goto out_free_in_sbals;
	}
4631 4632 4633 4634
	for (i = 0; i < card->qdio.no_in_queues; ++i)
		queue_start_poll[i] = card->discipline.start_poll;

	qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4635

F
Frank Blaschka 已提交
4636
	out_sbal_ptrs =
4637
		kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
F
Frank Blaschka 已提交
4638 4639
			sizeof(void *), GFP_KERNEL);
	if (!out_sbal_ptrs) {
4640 4641
		rc = -ENOMEM;
		goto out_free_queue_start_poll;
F
Frank Blaschka 已提交
4642 4643 4644 4645
	}
	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(
4646
				card->qdio.out_qs[i]->bufs[j]->buffer);
F
Frank Blaschka 已提交
4647 4648 4649 4650 4651 4652 4653
		}

	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;
4654
	init_data.no_input_qs            = card->qdio.no_in_queues;
F
Frank Blaschka 已提交
4655 4656 4657
	init_data.no_output_qs           = card->qdio.no_out_queues;
	init_data.input_handler          = card->discipline.input_handler;
	init_data.output_handler         = card->discipline.output_handler;
4658
	init_data.queue_start_poll_array = queue_start_poll;
F
Frank Blaschka 已提交
4659 4660 4661
	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;
4662
	init_data.output_sbal_state_array = card->qdio.out_bufstates;
4663 4664
	init_data.scan_threshold =
		(card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
F
Frank Blaschka 已提交
4665 4666 4667

	if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
		QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
J
Jan Glauber 已提交
4668 4669 4670 4671 4672 4673 4674
		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
4675
			atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
J
Jan Glauber 已提交
4676 4677
			qdio_free(CARD_DDEV(card));
		}
F
Frank Blaschka 已提交
4678
	}
4679 4680 4681 4682 4683 4684 4685 4686 4687 4688 4689

	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
4690
out:
F
Frank Blaschka 已提交
4691
	kfree(out_sbal_ptrs);
4692 4693 4694
out_free_queue_start_poll:
	kfree(queue_start_poll);
out_free_in_sbals:
F
Frank Blaschka 已提交
4695
	kfree(in_sbal_ptrs);
4696
out_free_qib_param:
F
Frank Blaschka 已提交
4697
	kfree(qib_param_field);
4698
out_free_nothing:
F
Frank Blaschka 已提交
4699 4700 4701 4702 4703 4704
	return rc;
}

static void qeth_core_free_card(struct qeth_card *card)
{

4705 4706
	QETH_DBF_TEXT(SETUP, 2, "freecrd");
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
F
Frank Blaschka 已提交
4707 4708 4709 4710 4711 4712
	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);
4713
	unregister_service_level(&card->qeth_service_level);
F
Frank Blaschka 已提交
4714 4715 4716 4717
	kfree(card);
}

static struct ccw_device_id qeth_ids[] = {
4718 4719 4720 4721 4722 4723 4724 4725 4726 4727
	{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
4728 4729 4730 4731 4732
	{},
};
MODULE_DEVICE_TABLE(ccw, qeth_ids);

static struct ccw_driver qeth_ccw_driver = {
4733
	.driver = {
S
Sebastian Ott 已提交
4734
		.owner = THIS_MODULE,
4735 4736
		.name = "qeth",
	},
F
Frank Blaschka 已提交
4737 4738 4739 4740 4741 4742 4743 4744
	.ids = qeth_ids,
	.probe = ccwgroup_probe_ccwdev,
	.remove = ccwgroup_remove_ccwdev,
};

static int qeth_core_driver_group(const char *buf, struct device *root_dev,
				unsigned long driver_id)
{
4745 4746
	return ccwgroup_create_from_string(root_dev, driver_id,
					   &qeth_ccw_driver, 3, buf);
F
Frank Blaschka 已提交
4747 4748 4749 4750
}

int qeth_core_hardsetup_card(struct qeth_card *card)
{
4751
	int retries = 0;
F
Frank Blaschka 已提交
4752 4753
	int rc;

4754
	QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
F
Frank Blaschka 已提交
4755
	atomic_set(&card->force_alloc_skb, 0);
4756
	qeth_get_channel_path_desc(card);
F
Frank Blaschka 已提交
4757
retry:
4758
	if (retries)
4759 4760
		QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
			dev_name(&card->gdev->dev));
4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772
	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
4773
	rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4774
retriable:
F
Frank Blaschka 已提交
4775
	if (rc == -ERESTARTSYS) {
4776
		QETH_DBF_TEXT(SETUP, 2, "break1");
F
Frank Blaschka 已提交
4777 4778
		return rc;
	} else if (rc) {
4779
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4780
		if (++retries > 3)
F
Frank Blaschka 已提交
4781 4782 4783 4784
			goto out;
		else
			goto retry;
	}
4785
	qeth_determine_capabilities(card);
F
Frank Blaschka 已提交
4786 4787 4788 4789
	qeth_init_tokens(card);
	qeth_init_func_level(card);
	rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
	if (rc == -ERESTARTSYS) {
4790
		QETH_DBF_TEXT(SETUP, 2, "break2");
F
Frank Blaschka 已提交
4791 4792
		return rc;
	} else if (rc) {
4793
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
F
Frank Blaschka 已提交
4794 4795 4796 4797 4798 4799 4800
		if (--retries < 0)
			goto out;
		else
			goto retry;
	}
	rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
	if (rc == -ERESTARTSYS) {
4801
		QETH_DBF_TEXT(SETUP, 2, "break3");
F
Frank Blaschka 已提交
4802 4803
		return rc;
	} else if (rc) {
4804
		QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
F
Frank Blaschka 已提交
4805 4806 4807 4808 4809
		if (--retries < 0)
			goto out;
		else
			goto retry;
	}
4810
	card->read_or_write_problem = 0;
F
Frank Blaschka 已提交
4811 4812
	rc = qeth_mpc_initialize(card);
	if (rc) {
4813
		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
F
Frank Blaschka 已提交
4814 4815
		goto out;
	}
4816 4817 4818 4819 4820 4821 4822 4823 4824

	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
4825 4826
	return 0;
out:
4827 4828 4829 4830
	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
4831 4832 4833 4834
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);

4835 4836
static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
		struct qdio_buffer_element *element,
F
Frank Blaschka 已提交
4837 4838 4839 4840
		struct sk_buff **pskb, int offset, int *pfrag, int data_len)
{
	struct page *page = virt_to_page(element->addr);
	if (*pskb == NULL) {
4841 4842 4843 4844 4845 4846 4847 4848 4849 4850
		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
4851
		skb_reserve(*pskb, ETH_HLEN);
4852
		if (data_len <= QETH_RX_PULL_LEN) {
F
Frank Blaschka 已提交
4853 4854 4855 4856
			memcpy(skb_put(*pskb, data_len), element->addr + offset,
				data_len);
		} else {
			get_page(page);
4857 4858 4859 4860 4861 4862 4863 4864
			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
4865 4866 4867 4868 4869 4870 4871 4872 4873 4874
			(*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)++;
	}
4875 4876


F
Frank Blaschka 已提交
4877 4878 4879 4880
	return 0;
}

struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4881
		struct qeth_qdio_buffer *qethbuffer,
F
Frank Blaschka 已提交
4882 4883 4884 4885
		struct qdio_buffer_element **__element, int *__offset,
		struct qeth_hdr **hdr)
{
	struct qdio_buffer_element *element = *__element;
4886
	struct qdio_buffer *buffer = qethbuffer->buffer;
F
Frank Blaschka 已提交
4887 4888
	int offset = *__offset;
	struct sk_buff *skb = NULL;
4889
	int skb_len = 0;
F
Frank Blaschka 已提交
4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902 4903 4904 4905 4906 4907
	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);
4908 4909 4910 4911 4912
	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
4913
		skb_len = (*hdr)->hdr.l3.length;
4914 4915 4916 4917 4918
		if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
		    (card->info.link_type == QETH_LINK_TYPE_HSTR))
			headroom = TR_HLEN;
		else
			headroom = ETH_HLEN;
4919 4920 4921 4922 4923 4924 4925
		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
4926 4927 4928 4929 4930
	}

	if (!skb_len)
		return NULL;

4931 4932 4933 4934
	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
4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948
		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) {
4949 4950
				if (qeth_create_skb_frag(qethbuffer, element,
				    &skb, offset, &frag, data_len))
F
Frank Blaschka 已提交
4951 4952 4953 4954 4955 4956 4957 4958 4959
					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
4960
				QETH_CARD_TEXT(card, 4, "unexeob");
C
Carsten Otte 已提交
4961
				QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
F
Frank Blaschka 已提交
4962 4963 4964 4965 4966 4967 4968 4969 4970 4971 4972 4973 4974 4975 4976 4977 4978 4979 4980 4981
				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
4982
		QETH_CARD_TEXT(card, 2, "noskbmem");
F
Frank Blaschka 已提交
4983 4984 4985 4986 4987 4988 4989 4990
	}
	card->stats.rx_dropped++;
	return NULL;
}
EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);

static void qeth_unregister_dbf_views(void)
{
4991 4992 4993 4994 4995
	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
4996 4997
}

C
Carsten Otte 已提交
4998
void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
P
Peter Tiedemann 已提交
4999 5000
{
	char dbf_txt_buf[32];
5001
	va_list args;
P
Peter Tiedemann 已提交
5002

C
Carsten Otte 已提交
5003
	if (level > id->level)
P
Peter Tiedemann 已提交
5004
		return;
5005 5006 5007
	va_start(args, fmt);
	vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
	va_end(args);
C
Carsten Otte 已提交
5008
	debug_text_event(id, level, dbf_txt_buf);
P
Peter Tiedemann 已提交
5009 5010 5011
}
EXPORT_SYMBOL_GPL(qeth_dbf_longtext);

F
Frank Blaschka 已提交
5012 5013
static int qeth_register_dbf_views(void)
{
5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026
	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
5027

5028 5029 5030 5031 5032 5033
		/* 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
5034

5035 5036 5037
		/* set a passing level */
		debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
	}
F
Frank Blaschka 已提交
5038 5039 5040 5041 5042 5043 5044 5045

	return 0;
}

int qeth_core_load_discipline(struct qeth_card *card,
		enum qeth_discipline_id discipline)
{
	int rc = 0;
5046
	mutex_lock(&qeth_mod_mutex);
F
Frank Blaschka 已提交
5047 5048 5049 5050 5051 5052 5053 5054 5055 5056 5057 5058 5059
	switch (discipline) {
	case QETH_DISCIPLINE_LAYER3:
		card->discipline.ccwgdriver = try_then_request_module(
			symbol_get(qeth_l3_ccwgroup_driver),
			"qeth_l3");
		break;
	case QETH_DISCIPLINE_LAYER2:
		card->discipline.ccwgdriver = try_then_request_module(
			symbol_get(qeth_l2_ccwgroup_driver),
			"qeth_l2");
		break;
	}
	if (!card->discipline.ccwgdriver) {
5060 5061
		dev_err(&card->gdev->dev, "There is no kernel module to "
			"support discipline %d\n", discipline);
F
Frank Blaschka 已提交
5062 5063
		rc = -EINVAL;
	}
5064
	mutex_unlock(&qeth_mod_mutex);
F
Frank Blaschka 已提交
5065 5066 5067 5068 5069 5070 5071 5072 5073 5074 5075 5076 5077 5078 5079 5080 5081 5082
	return rc;
}

void qeth_core_free_discipline(struct qeth_card *card)
{
	if (card->options.layer2)
		symbol_put(qeth_l2_ccwgroup_driver);
	else
		symbol_put(qeth_l3_ccwgroup_driver);
	card->discipline.ccwgdriver = NULL;
}

static int qeth_core_probe_device(struct ccwgroup_device *gdev)
{
	struct qeth_card *card;
	struct device *dev;
	int rc;
	unsigned long flags;
5083
	char dbf_name[20];
F
Frank Blaschka 已提交
5084

5085
	QETH_DBF_TEXT(SETUP, 2, "probedev");
F
Frank Blaschka 已提交
5086 5087 5088 5089 5090

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

5091
	QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
F
Frank Blaschka 已提交
5092 5093 5094

	card = qeth_alloc_card();
	if (!card) {
5095
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
F
Frank Blaschka 已提交
5096 5097 5098
		rc = -ENOMEM;
		goto err_dev;
	}
5099 5100 5101 5102 5103 5104 5105 5106 5107 5108 5109

	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
5110 5111 5112 5113 5114 5115 5116 5117 5118 5119 5120
	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) {
5121
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5122
		goto err_dbf;
F
Frank Blaschka 已提交
5123 5124 5125
	}
	rc = qeth_setup_card(card);
	if (rc) {
5126
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5127
		goto err_dbf;
F
Frank Blaschka 已提交
5128 5129
	}

5130
	if (card->info.type == QETH_CARD_TYPE_OSN)
F
Frank Blaschka 已提交
5131
		rc = qeth_core_create_osn_attributes(dev);
5132 5133 5134
	else
		rc = qeth_core_create_device_attributes(dev);
	if (rc)
5135
		goto err_dbf;
5136 5137 5138
	switch (card->info.type) {
	case QETH_CARD_TYPE_OSN:
	case QETH_CARD_TYPE_OSM:
F
Frank Blaschka 已提交
5139
		rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5140 5141
		if (rc)
			goto err_attr;
F
Frank Blaschka 已提交
5142 5143
		rc = card->discipline.ccwgdriver->probe(card->gdev);
		if (rc)
5144 5145 5146 5147 5148
			goto err_disc;
	case QETH_CARD_TYPE_OSD:
	case QETH_CARD_TYPE_OSX:
	default:
		break;
F
Frank Blaschka 已提交
5149 5150 5151 5152 5153
	}

	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);
5154 5155

	qeth_determine_capabilities(card);
F
Frank Blaschka 已提交
5156 5157
	return 0;

5158 5159 5160 5161 5162 5163 5164
err_disc:
	qeth_core_free_discipline(card);
err_attr:
	if (card->info.type == QETH_CARD_TYPE_OSN)
		qeth_core_remove_osn_attributes(dev);
	else
		qeth_core_remove_device_attributes(dev);
5165 5166
err_dbf:
	debug_unregister(card->debug);
F
Frank Blaschka 已提交
5167 5168 5169 5170 5171 5172 5173 5174 5175 5176 5177 5178
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);

5179
	QETH_DBF_TEXT(SETUP, 2, "removedv");
F
Frank Blaschka 已提交
5180 5181 5182 5183 5184 5185

	if (card->info.type == QETH_CARD_TYPE_OSN) {
		qeth_core_remove_osn_attributes(&gdev->dev);
	} else {
		qeth_core_remove_device_attributes(&gdev->dev);
	}
5186 5187 5188 5189 5190 5191

	if (card->discipline.ccwgdriver) {
		card->discipline.ccwgdriver->remove(gdev);
		qeth_core_free_discipline(card);
	}

5192
	debug_unregister(card->debug);
F
Frank Blaschka 已提交
5193 5194 5195 5196 5197 5198 5199 5200 5201 5202 5203 5204 5205 5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216 5217 5218 5219 5220 5221 5222 5223 5224 5225 5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236 5237 5238
	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;

	if (!card->discipline.ccwgdriver) {
		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;
		rc = card->discipline.ccwgdriver->probe(card->gdev);
		if (rc)
			goto err;
	}
	rc = card->discipline.ccwgdriver->set_online(gdev);
err:
	return rc;
}

static int qeth_core_set_offline(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
	return card->discipline.ccwgdriver->set_offline(gdev);
}

static void qeth_core_shutdown(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
	if (card->discipline.ccwgdriver &&
	    card->discipline.ccwgdriver->shutdown)
		card->discipline.ccwgdriver->shutdown(gdev);
}

5239 5240 5241 5242 5243 5244 5245 5246 5247 5248 5249 5250 5251 5252 5253 5254 5255 5256 5257 5258 5259 5260 5261 5262 5263 5264 5265 5266 5267 5268 5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279 5280 5281 5282
static int qeth_core_prepare(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
	if (card->discipline.ccwgdriver &&
	    card->discipline.ccwgdriver->prepare)
		return card->discipline.ccwgdriver->prepare(gdev);
	return 0;
}

static void qeth_core_complete(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
	if (card->discipline.ccwgdriver &&
	    card->discipline.ccwgdriver->complete)
		card->discipline.ccwgdriver->complete(gdev);
}

static int qeth_core_freeze(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
	if (card->discipline.ccwgdriver &&
	    card->discipline.ccwgdriver->freeze)
		return card->discipline.ccwgdriver->freeze(gdev);
	return 0;
}

static int qeth_core_thaw(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
	if (card->discipline.ccwgdriver &&
	    card->discipline.ccwgdriver->thaw)
		return card->discipline.ccwgdriver->thaw(gdev);
	return 0;
}

static int qeth_core_restore(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
	if (card->discipline.ccwgdriver &&
	    card->discipline.ccwgdriver->restore)
		return card->discipline.ccwgdriver->restore(gdev);
	return 0;
}

F
Frank Blaschka 已提交
5283
static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5284 5285 5286 5287
	.driver = {
		.owner = THIS_MODULE,
		.name = "qeth",
	},
F
Frank Blaschka 已提交
5288 5289 5290 5291 5292 5293
	.driver_id = 0xD8C5E3C8,
	.probe = qeth_core_probe_device,
	.remove = qeth_core_remove_device,
	.set_online = qeth_core_set_online,
	.set_offline = qeth_core_set_offline,
	.shutdown = qeth_core_shutdown,
5294 5295 5296 5297 5298
	.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
5299 5300 5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324 5325 5326 5327 5328 5329 5330 5331 5332 5333 5334 5335 5336 5337 5338 5339 5340 5341
};

static ssize_t
qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
			   size_t count)
{
	int err;
	err = qeth_core_driver_group(buf, qeth_core_root_dev,
					qeth_core_ccwgroup_driver.driver_id);
	if (err)
		return err;
	else
		return count;
}

static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);

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"},
5342 5343
	{"rx poll time"},
	{"rx poll count"},
F
Frank Blaschka 已提交
5344 5345 5346 5347 5348 5349 5350 5351
	{"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"},
5352
	{"tx csum"},
F
Frank Blaschka 已提交
5353
	{"tx lin"},
5354 5355
	{"cq handler count"},
	{"cq handler time"}
F
Frank Blaschka 已提交
5356 5357
};

5358
int qeth_core_get_sset_count(struct net_device *dev, int stringset)
F
Frank Blaschka 已提交
5359
{
5360 5361 5362 5363 5364 5365
	switch (stringset) {
	case ETH_SS_STATS:
		return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
	default:
		return -EINVAL;
	}
F
Frank Blaschka 已提交
5366
}
5367
EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
F
Frank Blaschka 已提交
5368 5369 5370 5371

void qeth_core_get_ethtool_stats(struct net_device *dev,
		struct ethtool_stats *stats, u64 *data)
{
5372
	struct qeth_card *card = dev->ml_priv;
F
Frank Blaschka 已提交
5373 5374 5375 5376 5377 5378 5379 5380 5381 5382 5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393 5394 5395 5396 5397 5398 5399 5400 5401 5402 5403 5404 5405 5406 5407 5408 5409 5410 5411
	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;
5412
	data[33] = card->perf_stats.tx_csum;
F
Frank Blaschka 已提交
5413
	data[34] = card->perf_stats.tx_lin;
5414 5415
	data[35] = card->perf_stats.cq_cnt;
	data[36] = card->perf_stats.cq_time;
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Frank Blaschka 已提交
5416 5417 5418 5419 5420 5421 5422 5423 5424 5425 5426 5427 5428 5429 5430 5431 5432 5433 5434 5435
}
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)
{
5436
	struct qeth_card *card = dev->ml_priv;
F
Frank Blaschka 已提交
5437 5438 5439 5440 5441 5442 5443 5444 5445 5446 5447 5448 5449 5450
	if (card->options.layer2)
		strcpy(info->driver, "qeth_l2");
	else
		strcpy(info->driver, "qeth_l3");

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

5451 5452 5453
int qeth_core_ethtool_get_settings(struct net_device *netdev,
					struct ethtool_cmd *ecmd)
{
5454
	struct qeth_card *card = netdev->ml_priv;
5455 5456 5457 5458 5459 5460 5461 5462 5463 5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474 5475 5476 5477 5478 5479 5480 5481 5482 5483 5484 5485 5486 5487 5488 5489 5490 5491 5492 5493 5494 5495 5496 5497 5498 5499 5500 5501 5502 5503 5504 5505 5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521 5522 5523 5524 5525 5526 5527 5528 5529 5530 5531 5532 5533 5534 5535 5536 5537 5538 5539 5540
	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
5541 5542 5543 5544
static int __init qeth_core_init(void)
{
	int rc;

5545
	pr_info("loading core functions\n");
F
Frank Blaschka 已提交
5546 5547
	INIT_LIST_HEAD(&qeth_core_card_list.list);
	rwlock_init(&qeth_core_card_list.rwlock);
5548
	mutex_init(&qeth_mod_mutex);
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Frank Blaschka 已提交
5549 5550 5551 5552 5553 5554 5555 5556 5557 5558 5559 5560 5561 5562

	rc = qeth_register_dbf_views();
	if (rc)
		goto out_err;
	rc = ccw_driver_register(&qeth_ccw_driver);
	if (rc)
		goto ccw_err;
	rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
	if (rc)
		goto ccwgroup_err;
	rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
				&driver_attr_group);
	if (rc)
		goto driver_err;
M
Mark McLoughlin 已提交
5563
	qeth_core_root_dev = root_device_register("qeth");
F
Frank Blaschka 已提交
5564 5565 5566 5567
	rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
	if (rc)
		goto register_err;

5568 5569 5570 5571 5572 5573 5574
	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;
	}

5575 5576 5577 5578 5579 5580 5581
	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;
	}

5582
	return 0;
5583 5584
cqslab_err:
	kmem_cache_destroy(qeth_core_header_cache);
5585
slab_err:
M
Mark McLoughlin 已提交
5586
	root_device_unregister(qeth_core_root_dev);
F
Frank Blaschka 已提交
5587 5588 5589 5590 5591 5592 5593 5594
register_err:
	driver_remove_file(&qeth_core_ccwgroup_driver.driver,
			   &driver_attr_group);
driver_err:
	ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
ccwgroup_err:
	ccw_driver_unregister(&qeth_ccw_driver);
ccw_err:
5595
	QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
F
Frank Blaschka 已提交
5596 5597
	qeth_unregister_dbf_views();
out_err:
5598
	pr_err("Initializing the qeth device driver failed\n");
F
Frank Blaschka 已提交
5599 5600 5601 5602 5603
	return rc;
}

static void __exit qeth_core_exit(void)
{
M
Mark McLoughlin 已提交
5604
	root_device_unregister(qeth_core_root_dev);
F
Frank Blaschka 已提交
5605 5606 5607 5608
	driver_remove_file(&qeth_core_ccwgroup_driver.driver,
			   &driver_attr_group);
	ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
	ccw_driver_unregister(&qeth_ccw_driver);
5609
	kmem_cache_destroy(qeth_qdio_outbuf_cache);
5610
	kmem_cache_destroy(qeth_core_header_cache);
F
Frank Blaschka 已提交
5611
	qeth_unregister_dbf_views();
5612
	pr_info("core functions removed\n");
F
Frank Blaschka 已提交
5613 5614 5615 5616 5617 5618 5619
}

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");