qeth_core_main.c 151.8 KB
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/*
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 *    Copyright IBM Corp. 2007, 2009
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 *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
 *		 Frank Pavlic <fpavlic@de.ibm.com>,
 *		 Thomas Spatzier <tspat@de.ibm.com>,
 *		 Frank Blaschka <frank.blaschka@de.ibm.com>
 */

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

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#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/mii.h>
#include <linux/kthread.h>
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#include <linux/slab.h>
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#include <net/iucv/af_iucv.h>
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#include <asm/ebcdic.h>
#include <asm/io.h>
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#include <asm/sysinfo.h>
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#include <asm/compat.h>
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#include "qeth_core.h"

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struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
	/* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
	/*                   N  P  A    M  L  V                      H  */
	[QETH_DBF_SETUP] = {"qeth_setup",
				8, 1,   8, 5, &debug_hex_ascii_view, NULL},
	[QETH_DBF_MSG]   = {"qeth_msg",
				8, 1, 128, 3, &debug_sprintf_view,   NULL},
	[QETH_DBF_CTRL]  = {"qeth_control",
		8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
};
EXPORT_SYMBOL_GPL(qeth_dbf);
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struct qeth_card_list_struct qeth_core_card_list;
EXPORT_SYMBOL_GPL(qeth_core_card_list);
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struct kmem_cache *qeth_core_header_cache;
EXPORT_SYMBOL_GPL(qeth_core_header_cache);
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static struct kmem_cache *qeth_qdio_outbuf_cache;
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static struct device *qeth_core_root_dev;
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static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
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static struct lock_class_key qdio_out_skb_queue_key;
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static struct mutex qeth_mod_mutex;
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static void qeth_send_control_data_cb(struct qeth_channel *,
			struct qeth_cmd_buffer *);
static int qeth_issue_next_read(struct qeth_card *);
static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
static void qeth_free_buffer_pool(struct qeth_card *);
static int qeth_qdio_establish(struct qeth_card *);
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static void qeth_free_qdio_buffers(struct qeth_card *);
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static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
		struct qeth_qdio_out_buffer *buf,
		enum iucv_tx_notify notification);
static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
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static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
		struct qeth_qdio_out_buffer *buf,
		enum qeth_qdio_buffer_states newbufstate);
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static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
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static 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)
540 541
				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:
546 547 548
				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:
556 557 558
				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);
562
				card->lan_online = 1;
563 564
				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:
576
				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);
602
	atomic_set(&card->write.irq_pending, 0);
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}
EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);

606 607
static int qeth_check_idx_response(struct qeth_card *card,
	unsigned char *buffer)
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{
	if (!buffer)
		return 0;

612
	QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
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	if ((buffer[2] & 0xc0) == 0xc0) {
614
		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);
622 623 624 625 626 627
		if (buffer[4] == 0xf6) {
			dev_err(&card->gdev->dev,
			"The qeth device is not configured "
			"for the OSI layer required by z/VM\n");
			return -EPERM;
		}
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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);
680
	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;
723
	int rc = 0;
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	card = CARD_FROM_CDEV(channel->ccwdev);
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	QETH_CARD_TEXT(card, 4, "sndctlcb");
727 728 729 730 731
	rc = qeth_check_idx_response(card, iob->data);
	switch (rc) {
	case 0:
		break;
	case -EIO:
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		qeth_clear_ipacmd_list(card);
733
		qeth_schedule_recovery(card);
734
		/* fall through */
735
	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;

800
	QETH_DBF_TEXT(SETUP, 2, "setupch");
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	for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
802
		channel->iob[cnt].data =
803
			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
894
	QETH_CARD_TEXT(card, 2, "startrec");
F
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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
904
	struct qeth_card *card;
F
Frank Blaschka 已提交
905 906

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

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

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

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

	card = CARD_FROM_CDEV(cdev);

F
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956 957 958 959 960
	if (!IS_ERR(irb))
		return 0;

	switch (PTR_ERR(irb)) {
	case -EIO:
961 962
		QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
			dev_name(&cdev->dev));
C
Carsten Otte 已提交
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		QETH_CARD_TEXT(card, 2, "ckirberr");
		QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
F
Frank Blaschka 已提交
965 966
		break;
	case -ETIMEDOUT:
967 968
		dev_warn(&cdev->dev, "A hardware operation timed out"
			" on the device\n");
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969 970
		QETH_CARD_TEXT(card, 2, "ckirberr");
		QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
F
Frank Blaschka 已提交
971 972 973 974 975 976 977 978
		if (intparm == QETH_RCD_PARM) {
			if (card && (card->data.ccwdev == cdev)) {
				card->data.state = CH_STATE_DOWN;
				wake_up(&card->wait_q);
			}
		}
		break;
	default:
979 980
		QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
			dev_name(&cdev->dev), PTR_ERR(irb));
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Carsten Otte 已提交
981 982
		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;
1000 1001
	cstat = irb->scsw.cmd.cstat;
	dstat = irb->scsw.cmd.dstat;
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1002 1003 1004 1005 1006

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

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	QETH_CARD_TEXT(card, 5, "irq");

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

1260
static void qeth_get_channel_path_desc(struct qeth_card *card)
F
Frank Blaschka 已提交
1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273
{
	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;

1274
	QETH_DBF_TEXT(SETUP, 2, "chp_desc");
F
Frank Blaschka 已提交
1275 1276 1277 1278

	ccwdev = card->data.ccwdev;
	chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
	if (chp_dsc != NULL) {
1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289
		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,
1290
					"Priority Queueing not supported\n");
1291 1292 1293 1294 1295 1296 1297 1298 1299 1300
				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;
1301 1302
			}
		}
1303
		card->info.func_level = 0x4100 + chp_dsc->desc;
F
Frank Blaschka 已提交
1304 1305
		kfree(chp_dsc);
	}
1306 1307 1308
	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
1309 1310 1311 1312
}

static void qeth_init_qdio_info(struct qeth_card *card)
{
1313
	QETH_DBF_TEXT(SETUP, 4, "intqdinf");
F
Frank Blaschka 已提交
1314 1315 1316
	atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
	/* inbound */
	card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1317 1318 1319 1320
	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
1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333
	card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
	INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
	INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
}

static void qeth_set_intial_options(struct qeth_card *card)
{
	card->options.route4.type = NO_ROUTER;
	card->options.route6.type = NO_ROUTER;
	card->options.fake_broadcast = 0;
	card->options.add_hhlen = DEFAULT_ADD_HHLEN;
	card->options.performance_stats = 0;
	card->options.rx_sg_cb = QETH_RX_SG_CB;
E
Einar Lueck 已提交
1334
	card->options.isolation = ISOLATION_MODE_NONE;
1335
	card->options.cq = QETH_CQ_DISABLED;
F
Frank Blaschka 已提交
1336 1337 1338 1339 1340 1341 1342 1343
}

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
1344
	QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
F
Frank Blaschka 已提交
1345 1346 1347 1348 1349 1350 1351 1352 1353 1354
			(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)
{
1355
	struct task_struct *ts;
F
Frank Blaschka 已提交
1356 1357
	struct qeth_card *card = container_of(work, struct qeth_card,
					kernel_thread_starter);
C
Carsten Otte 已提交
1358
	QETH_CARD_TEXT(card , 2, "strthrd");
F
Frank Blaschka 已提交
1359 1360 1361 1362

	if (card->read.state != CH_STATE_UP &&
	    card->write.state != CH_STATE_UP)
		return;
1363
	if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1364
		ts = kthread_run(card->discipline->recover, (void *)card,
F
Frank Blaschka 已提交
1365
				"qeth_recover");
1366 1367 1368 1369 1370 1371
		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
1372 1373 1374 1375 1376
}

static int qeth_setup_card(struct qeth_card *card)
{

1377 1378
	QETH_DBF_TEXT(SETUP, 2, "setupcrd");
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
F
Frank Blaschka 已提交
1379 1380 1381 1382 1383 1384

	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;
1385
	card->read_or_write_problem = 0;
F
Frank Blaschka 已提交
1386 1387 1388 1389 1390 1391
	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);
1392
	mutex_init(&card->conf_mutex);
1393
	mutex_init(&card->discipline_mutex);
F
Frank Blaschka 已提交
1394 1395 1396 1397 1398 1399 1400 1401
	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
1402
	/* initial options */
F
Frank Blaschka 已提交
1403 1404 1405 1406 1407 1408 1409 1410
	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);
1411
	INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
F
Frank Blaschka 已提交
1412 1413 1414
	return 0;
}

1415 1416 1417 1418
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);
1419 1420 1421
	if (card->info.mcl_level[0])
		seq_printf(m, "qeth: %s firmware level %s\n",
			CARD_BUS_ID(card), card->info.mcl_level);
1422 1423
}

F
Frank Blaschka 已提交
1424 1425 1426 1427
static struct qeth_card *qeth_alloc_card(void)
{
	struct qeth_card *card;

1428
	QETH_DBF_TEXT(SETUP, 2, "alloccrd");
F
Frank Blaschka 已提交
1429 1430
	card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
	if (!card)
1431
		goto out;
1432
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1433
	card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
1434 1435 1436
	if (!card->ip_tbd_list) {
		QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
		goto out_card;
F
Frank Blaschka 已提交
1437
	}
1438 1439 1440 1441
	if (qeth_setup_channel(&card->read))
		goto out_ip;
	if (qeth_setup_channel(&card->write))
		goto out_channel;
F
Frank Blaschka 已提交
1442
	card->options.layer2 = -1;
1443 1444
	card->qeth_service_level.seq_print = qeth_core_sl_print;
	register_service_level(&card->qeth_service_level);
F
Frank Blaschka 已提交
1445
	return card;
1446 1447 1448 1449 1450 1451 1452 1453 1454

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
1455 1456 1457 1458 1459 1460
}

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

1461
	QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
F
Frank Blaschka 已提交
1462 1463 1464

	card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
	card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1465 1466 1467 1468 1469 1470 1471 1472
	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];
1473
			card->qdio.no_in_queues = 1;
1474 1475 1476
			card->info.is_multicast_different =
				known_devices[i][QETH_MULTICAST_IND];
			qeth_get_channel_path_desc(card);
F
Frank Blaschka 已提交
1477 1478 1479 1480 1481
			return 0;
		}
		i++;
	}
	card->info.type = QETH_CARD_TYPE_UNKNOWN;
1482 1483
	dev_err(&card->gdev->dev, "The adapter hardware is of an "
		"unknown type\n");
F
Frank Blaschka 已提交
1484 1485 1486 1487 1488 1489 1490 1491 1492 1493
	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
1494
	QETH_CARD_TEXT(card, 3, "clearch");
F
Frank Blaschka 已提交
1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517
	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
1518
	QETH_CARD_TEXT(card, 3, "haltch");
F
Frank Blaschka 已提交
1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537
	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
1538
	QETH_CARD_TEXT(card, 3, "haltchs");
F
Frank Blaschka 已提交
1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552
	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
1553
	QETH_CARD_TEXT(card, 3, "clearchs");
F
Frank Blaschka 已提交
1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567
	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
1568
	QETH_CARD_TEXT(card, 3, "clhacrd");
F
Frank Blaschka 已提交
1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580

	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
1581
	QETH_CARD_TEXT(card, 3, "qdioclr");
F
Frank Blaschka 已提交
1582 1583 1584 1585
	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
1586
			rc = qdio_shutdown(CARD_DDEV(card),
F
Frank Blaschka 已提交
1587 1588
				QDIO_FLAG_CLEANUP_USING_HALT);
		else
J
Jan Glauber 已提交
1589
			rc = qdio_shutdown(CARD_DDEV(card),
F
Frank Blaschka 已提交
1590 1591
				QDIO_FLAG_CLEANUP_USING_CLEAR);
		if (rc)
C
Carsten Otte 已提交
1592
			QETH_CARD_TEXT_(card, 3, "1err%d", rc);
J
Jan Glauber 已提交
1593
		qdio_free(CARD_DDEV(card));
F
Frank Blaschka 已提交
1594 1595 1596 1597 1598 1599 1600 1601 1602
		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
1603
		QETH_CARD_TEXT_(card, 3, "2err%d", rc);
F
Frank Blaschka 已提交
1604 1605 1606 1607 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
	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;
}

1657
static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
F
Frank Blaschka 已提交
1658
{
1659
	QETH_DBF_TEXT(SETUP, 2, "cfgunit");
F
Frank Blaschka 已提交
1660 1661 1662 1663 1664
	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']));
1665 1666 1667 1668 1669 1670
}

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

1671 1672
	if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
	    (prcd[76] == 0xF5 || prcd[76] == 0xF6)) {
1673 1674 1675 1676 1677 1678 1679 1680
		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
1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693
}

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)
{
1694 1695
	switch (card->info.type) {
	case QETH_CARD_TYPE_IQD:
1696
		card->info.func_level =	QETH_IDX_FUNC_LEVEL_IQD;
1697 1698
		break;
	case QETH_CARD_TYPE_OSD:
1699
	case QETH_CARD_TYPE_OSN:
1700 1701 1702 1703
		card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
		break;
	default:
		break;
F
Frank Blaschka 已提交
1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715
	}
}

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;

1716
	QETH_DBF_TEXT(SETUP, 2, "idxanswr");
F
Frank Blaschka 已提交
1717 1718 1719 1720 1721 1722 1723 1724 1725
	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);
1726
	QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
F
Frank Blaschka 已提交
1727 1728 1729 1730 1731 1732
	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) {
1733
		QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1734
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
F
Frank Blaschka 已提交
1735 1736 1737 1738 1739 1740 1741 1742 1743 1744
		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;
1745
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
F
Frank Blaschka 已提交
1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761
		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
1762
	struct ccw_dev_id temp_devid;
F
Frank Blaschka 已提交
1763 1764 1765

	card = CARD_FROM_CDEV(channel->ccwdev);

1766
	QETH_DBF_TEXT(SETUP, 2, "idxactch");
F
Frank Blaschka 已提交
1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788

	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
1789 1790
	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
1791 1792 1793 1794 1795
	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);
1796
	QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
F
Frank Blaschka 已提交
1797 1798 1799 1800 1801 1802
	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) {
1803 1804
		QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
			rc);
1805
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
1806 1807 1808 1809 1810 1811 1812 1813 1814
		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) {
1815 1816 1817 1818
		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));
1819
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
F
Frank Blaschka 已提交
1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840
		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;

1841
	QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
F
Frank Blaschka 已提交
1842 1843 1844 1845 1846 1847 1848 1849

	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))) {
1850
		if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1851 1852 1853
			dev_err(&card->write.ccwdev->dev,
				"The adapter is used exclusively by another "
				"host\n");
F
Frank Blaschka 已提交
1854
		else
1855 1856 1857
			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
1858 1859 1860 1861
		goto out;
	}
	memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
	if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1862 1863 1864 1865
		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
1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878
		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;

1879
	QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
F
Frank Blaschka 已提交
1880 1881 1882 1883 1884 1885
	if (channel->state == CH_STATE_DOWN) {
		channel->state = CH_STATE_ACTIVATING;
		goto out;
	}

	card = CARD_FROM_CDEV(channel->ccwdev);
1886
	if (qeth_check_idx_response(card, iob->data))
F
Frank Blaschka 已提交
1887 1888 1889
			goto out;

	if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1890 1891
		switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
		case QETH_IDX_ACT_ERR_EXCL:
1892 1893 1894
			dev_err(&card->write.ccwdev->dev,
				"The adapter is used exclusively by another "
				"host\n");
1895 1896
			break;
		case QETH_IDX_ACT_ERR_AUTH:
1897
		case QETH_IDX_ACT_ERR_AUTH_USER:
1898 1899
			dev_err(&card->read.ccwdev->dev,
				"Setting the device online failed because of "
1900
				"insufficient authorization\n");
1901 1902
			break;
		default:
1903 1904 1905
			QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
				" negative reply\n",
				dev_name(&card->read.ccwdev->dev));
1906
		}
1907 1908
		QETH_CARD_TEXT_(card, 2, "idxread%c",
			QETH_IDX_ACT_CAUSE_CODE(iob->data));
F
Frank Blaschka 已提交
1909 1910 1911 1912
		goto out;
	}

/**
1913 1914 1915
 *  * temporary fix for microcode bug
 *   * to revert it,replace OR by AND
 *    */
F
Frank Blaschka 已提交
1916
	if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
1917
	     (card->info.type == QETH_CARD_TYPE_OSD))
F
Frank Blaschka 已提交
1918 1919 1920 1921
		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)) {
1922 1923 1924 1925
		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
1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951
		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);
1952
	QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
F
Frank Blaschka 已提交
1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964
}
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;
1965
	unsigned long timeout, event_timeout;
1966
	struct qeth_ipa_cmd *cmd;
F
Frank Blaschka 已提交
1967

C
Carsten Otte 已提交
1968
	QETH_CARD_TEXT(card, 2, "sendctl");
F
Frank Blaschka 已提交
1969

1970 1971 1972 1973
	if (card->read_or_write_problem) {
		qeth_release_buffer(iob->channel, iob);
		return -EIO;
	}
F
Frank Blaschka 已提交
1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987
	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);
1988
	QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
F
Frank Blaschka 已提交
1989 1990 1991 1992 1993

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

	if (IS_IPA(iob->data))
1994
		event_timeout = QETH_IPA_TIMEOUT;
F
Frank Blaschka 已提交
1995
	else
1996 1997
		event_timeout = QETH_TIMEOUT;
	timeout = jiffies + event_timeout;
F
Frank Blaschka 已提交
1998

C
Carsten Otte 已提交
1999
	QETH_CARD_TEXT(card, 6, "noirqpnd");
F
Frank Blaschka 已提交
2000 2001 2002 2003 2004
	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) {
2005 2006 2007
		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
2008
		QETH_CARD_TEXT_(card, 2, " err%d", rc);
F
Frank Blaschka 已提交
2009 2010 2011 2012 2013 2014 2015 2016 2017
		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;
	}
2018 2019 2020 2021 2022 2023 2024

	/* 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,
2025
		    atomic_read(&reply->received), event_timeout))
2026 2027 2028 2029 2030 2031 2032 2033 2034
			goto time_err;
	} else {
		while (!atomic_read(&reply->received)) {
			if (time_after(jiffies, timeout))
				goto time_err;
			cpu_relax();
		};
	}

2035 2036
	if (reply->rc == -EIO)
		goto error;
2037 2038 2039 2040 2041
	rc = reply->rc;
	qeth_put_reply(reply);
	return rc;

time_err:
2042
	reply->rc = -ETIME;
2043 2044 2045 2046
	spin_lock_irqsave(&reply->card->lock, flags);
	list_del_init(&reply->list);
	spin_unlock_irqrestore(&reply->card->lock, flags);
	atomic_inc(&reply->received);
2047
error:
2048 2049 2050
	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
2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061
	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;

2062
	QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
F
Frank Blaschka 已提交
2063 2064 2065 2066 2067

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.cm_filter_r,
	       QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
2068
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
2069 2070 2071 2072 2073 2074 2075 2076
	return 0;
}

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

2077
	QETH_DBF_TEXT(SETUP, 2, "cmenable");
F
Frank Blaschka 已提交
2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096

	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;

2097
	QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
F
Frank Blaschka 已提交
2098 2099 2100 2101 2102

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.cm_connection_r,
	       QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
2103
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
2104 2105 2106 2107 2108 2109 2110 2111
	return 0;
}

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

2112
	QETH_DBF_TEXT(SETUP, 2, "cmsetup");
F
Frank Blaschka 已提交
2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134

	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;
2135
	case QETH_CARD_TYPE_OSD:
F
Frank Blaschka 已提交
2136 2137 2138 2139 2140 2141 2142
		switch (card->info.link_type) {
		case QETH_LINK_TYPE_HSTR:
		case QETH_LINK_TYPE_LANE_TR:
			return 2000;
		default:
			return 1492;
		}
2143 2144 2145
	case QETH_CARD_TYPE_OSM:
	case QETH_CARD_TYPE_OSX:
		return 1492;
F
Frank Blaschka 已提交
2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169
	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) {
2170 2171 2172
	case QETH_CARD_TYPE_OSD:
	case QETH_CARD_TYPE_OSM:
	case QETH_CARD_TYPE_OSX:
F
Frank Blaschka 已提交
2173 2174
	case QETH_CARD_TYPE_IQD:
		return ((mtu >= 576) &&
2175
			(mtu <= card->info.max_mtu));
F
Frank Blaschka 已提交
2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191
	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;

2192
	QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
F
Frank Blaschka 已提交
2193 2194 2195 2196 2197

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.ulp_filter_r,
	       QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
2198
	if (card->info.type == QETH_CARD_TYPE_IQD) {
F
Frank Blaschka 已提交
2199 2200 2201 2202
		memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
		mtu = qeth_get_mtu_outof_framesize(framesize);
		if (!mtu) {
			iob->rc = -EINVAL;
2203
			QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
2204 2205
			return 0;
		}
2206 2207 2208 2209 2210 2211 2212 2213
		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
2214
		card->info.initial_mtu = mtu;
2215
		card->info.max_mtu = mtu;
F
Frank Blaschka 已提交
2216 2217 2218
		card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
	} else {
		card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
2219 2220
		card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
			iob->data);
F
Frank Blaschka 已提交
2221 2222 2223 2224 2225 2226 2227 2228 2229 2230
		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;
2231
	QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2232
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
2233 2234 2235 2236 2237 2238 2239 2240 2241 2242
	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*/
2243
	QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
F
Frank Blaschka 已提交
2244 2245 2246 2247 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

	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;
2275
	int rc = 0;
F
Frank Blaschka 已提交
2276

2277
	QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
F
Frank Blaschka 已提交
2278 2279 2280 2281 2282

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.ulp_connection_r,
	       QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
2283 2284 2285 2286 2287
	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");
2288
		iob->rc = -EMLINK;
2289
	}
2290
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2291
	return rc;
F
Frank Blaschka 已提交
2292 2293 2294 2295 2296 2297 2298 2299 2300
}

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

2301
	QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
F
Frank Blaschka 已提交
2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321

	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;
}

2322 2323 2324 2325 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
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
2353 2354 2355 2356
static int qeth_alloc_qdio_buffers(struct qeth_card *card)
{
	int i, j;

2357
	QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
F
Frank Blaschka 已提交
2358 2359 2360 2361 2362

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

2363
	card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
2364
				   GFP_KERNEL);
F
Frank Blaschka 已提交
2365 2366
	if (!card->qdio.in_q)
		goto out_nomem;
2367 2368
	QETH_DBF_TEXT(SETUP, 2, "inq");
	QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
F
Frank Blaschka 已提交
2369 2370
	memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
	/* give inbound qeth_qdio_buffers their qdio_buffers */
2371
	for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
F
Frank Blaschka 已提交
2372 2373
		card->qdio.in_q->bufs[i].buffer =
			&card->qdio.in_q->qdio_bufs[i];
2374 2375
		card->qdio.in_q->bufs[i].rx_skb = NULL;
	}
F
Frank Blaschka 已提交
2376 2377 2378
	/* inbound buffer pool */
	if (qeth_alloc_buffer_pool(card))
		goto out_freeinq;
2379

F
Frank Blaschka 已提交
2380 2381
	/* outbound */
	card->qdio.out_qs =
2382
		kzalloc(card->qdio.no_out_queues *
F
Frank Blaschka 已提交
2383 2384 2385 2386
			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) {
2387
		card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q),
2388
					       GFP_KERNEL);
F
Frank Blaschka 已提交
2389 2390
		if (!card->qdio.out_qs[i])
			goto out_freeoutq;
2391 2392
		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
2393 2394 2395
		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) {
2396 2397 2398
			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
2399 2400
		}
	}
2401 2402 2403 2404 2405

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

F
Frank Blaschka 已提交
2406 2407
	return 0;

2408 2409 2410 2411 2412 2413 2414
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
2415
out_freeoutq:
2416
	while (i > 0) {
F
Frank Blaschka 已提交
2417
		kfree(card->qdio.out_qs[--i]);
2418 2419
		qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
	}
F
Frank Blaschka 已提交
2420 2421 2422 2423 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
	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)
{
2460
	QETH_DBF_TEXT(SETUP, 3, "qdioact");
J
Jan Glauber 已提交
2461
	return qdio_activate(CARD_DDEV(card));
F
Frank Blaschka 已提交
2462 2463 2464 2465 2466 2467 2468
}

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

2469
	QETH_DBF_TEXT(SETUP, 2, "dmact");
F
Frank Blaschka 已提交
2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485

	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;

2486
	QETH_DBF_TEXT(SETUP, 2, "mpcinit");
F
Frank Blaschka 已提交
2487 2488 2489

	rc = qeth_issue_next_read(card);
	if (rc) {
2490
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
2491 2492 2493 2494
		return rc;
	}
	rc = qeth_cm_enable(card);
	if (rc) {
2495
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
F
Frank Blaschka 已提交
2496 2497 2498 2499
		goto out_qdio;
	}
	rc = qeth_cm_setup(card);
	if (rc) {
2500
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
F
Frank Blaschka 已提交
2501 2502 2503 2504
		goto out_qdio;
	}
	rc = qeth_ulp_enable(card);
	if (rc) {
2505
		QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
F
Frank Blaschka 已提交
2506 2507 2508 2509
		goto out_qdio;
	}
	rc = qeth_ulp_setup(card);
	if (rc) {
2510
		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
F
Frank Blaschka 已提交
2511 2512 2513 2514
		goto out_qdio;
	}
	rc = qeth_alloc_qdio_buffers(card);
	if (rc) {
2515
		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
F
Frank Blaschka 已提交
2516 2517 2518 2519
		goto out_qdio;
	}
	rc = qeth_qdio_establish(card);
	if (rc) {
2520
		QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
F
Frank Blaschka 已提交
2521 2522 2523 2524 2525
		qeth_free_qdio_buffers(card);
		goto out_qdio;
	}
	rc = qeth_qdio_activate(card);
	if (rc) {
2526
		QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
F
Frank Blaschka 已提交
2527 2528 2529 2530
		goto out_qdio;
	}
	rc = qeth_dm_act(card);
	if (rc) {
2531
		QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
F
Frank Blaschka 已提交
2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550
		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;
2551
	dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
F
Frank Blaschka 已提交
2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564
	       "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])
2565
		dev_info(&card->gdev->dev, "Device is a%s "
F
Frank Blaschka 已提交
2566 2567 2568 2569 2570 2571 2572 2573
		       "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
2574
		dev_info(&card->gdev->dev, "Device is a%s "
F
Frank Blaschka 已提交
2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585
		       "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) {
2586 2587 2588
	case QETH_CARD_TYPE_OSD:
	case QETH_CARD_TYPE_OSM:
	case QETH_CARD_TYPE_OSX:
F
Frank Blaschka 已提交
2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602
		/* 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:
2603 2604
		if ((card->info.guestlan) ||
		    (card->info.mcl_level[0] & 0x80)) {
F
Frank Blaschka 已提交
2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629
			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
2630
	QETH_CARD_TEXT(card, 5, "inwrklst");
F
Frank Blaschka 已提交
2631 2632 2633 2634 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

	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) {
2669
			page = alloc_page(GFP_ATOMIC);
F
Frank Blaschka 已提交
2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689
			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;

2690 2691 2692 2693 2694 2695
	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
2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711
	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)
2712
			buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
F
Frank Blaschka 已提交
2713
		else
2714 2715
			buf->buffer->element[i].eflags = 0;
		buf->buffer->element[i].sflags = 0;
F
Frank Blaschka 已提交
2716 2717 2718 2719 2720 2721 2722 2723 2724
	}
	return 0;
}

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

2725
	QETH_DBF_TEXT(SETUP, 2, "initqdqs");
F
Frank Blaschka 已提交
2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736

	/* 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
2737
		     card->qdio.in_buf_pool.buf_count - 1);
F
Frank Blaschka 已提交
2738
	if (rc) {
2739
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
2740 2741
		return rc;
	}
2742 2743 2744 2745 2746 2747 2748

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

F
Frank Blaschka 已提交
2749 2750 2751 2752 2753 2754
	/* 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],
2755 2756
					card->qdio.out_qs[i]->bufs[j],
					QETH_QDIO_BUF_EMPTY);
F
Frank Blaschka 已提交
2757 2758 2759 2760 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
		}
		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
2832
	QETH_CARD_TEXT(card, 4, "sendipa");
F
Frank Blaschka 已提交
2833 2834 2835 2836 2837 2838 2839 2840 2841

	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);
2842 2843
	rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
						iob, reply_cb, reply_param);
2844 2845 2846 2847
	if (rc == -ETIME) {
		qeth_clear_ipacmd_list(card);
		qeth_schedule_recovery(card);
	}
F
Frank Blaschka 已提交
2848 2849 2850 2851 2852 2853 2854
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);

int qeth_send_startlan(struct qeth_card *card)
{
	int rc;
2855
	struct qeth_cmd_buffer *iob;
F
Frank Blaschka 已提交
2856

2857
	QETH_DBF_TEXT(SETUP, 2, "strtlan");
F
Frank Blaschka 已提交
2858

2859 2860
	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
2861 2862 2863 2864 2865 2866 2867 2868 2869
	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
2870
	QETH_CARD_TEXT(card, 4, "defadpcb");
F
Frank Blaschka 已提交
2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884

	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
2885
	QETH_CARD_TEXT(card, 3, "quyadpcb");
F
Frank Blaschka 已提交
2886 2887

	cmd = (struct qeth_ipa_cmd *) data;
2888
	if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
F
Frank Blaschka 已提交
2889 2890
		card->info.link_type =
		      cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
2891 2892
		QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
	}
F
Frank Blaschka 已提交
2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920
	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
2921
	QETH_CARD_TEXT(card, 3, "queryadp");
F
Frank Blaschka 已提交
2922 2923 2924 2925 2926 2927 2928
	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);

2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944
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");
2945 2946
	QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_supported);
	QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_enabled);
2947 2948 2949 2950 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
	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);

3065 3066
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
3067
{
J
Jan Glauber 已提交
3068
	if (qdio_error) {
C
Carsten Otte 已提交
3069
		QETH_CARD_TEXT(card, 2, dbftext);
C
Carsten Otte 已提交
3070
		QETH_CARD_TEXT_(card, 2, " F15=%02X",
3071
			       buf->element[15].sflags);
C
Carsten Otte 已提交
3072
		QETH_CARD_TEXT_(card, 2, " F14=%02X",
3073
			       buf->element[14].sflags);
C
Carsten Otte 已提交
3074
		QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3075
		if ((buf->element[15].sflags) == 0x12) {
3076 3077 3078 3079
			card->stats.rx_dropped++;
			return 0;
		} else
			return 1;
F
Frank Blaschka 已提交
3080 3081 3082 3083 3084
	}
	return 0;
}
EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);

3085 3086 3087 3088 3089 3090 3091 3092 3093
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
3094 3095 3096
void qeth_queue_input_buffer(struct qeth_card *card, int index)
{
	struct qeth_qdio_q *queue = card->qdio.in_q;
3097
	struct list_head *lh;
F
Frank Blaschka 已提交
3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128
	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);
		}

3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142
		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
3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154
		/*
		 * 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
3155 3156
		rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
			     queue->next_buf_to_init, count);
F
Frank Blaschka 已提交
3157 3158 3159 3160 3161
		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
3162
			QETH_CARD_TEXT(card, 2, "qinberr");
F
Frank Blaschka 已提交
3163 3164 3165 3166 3167 3168 3169 3170
		}
		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
3171
		struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
F
Frank Blaschka 已提交
3172
{
3173
	int sbalf15 = buffer->buffer->element[15].sflags;
F
Frank Blaschka 已提交
3174

C
Carsten Otte 已提交
3175
	QETH_CARD_TEXT(card, 6, "hdsnderr");
3176 3177 3178 3179 3180 3181 3182
	if (card->info.type == QETH_CARD_TYPE_IQD) {
		if (sbalf15 == 0) {
			qdio_err = 0;
		} else {
			qdio_err = 1;
		}
	}
3183
	qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3184 3185

	if (!qdio_err)
F
Frank Blaschka 已提交
3186
		return QETH_SEND_ERROR_NONE;
3187 3188 3189 3190

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

C
Carsten Otte 已提交
3191 3192
	QETH_CARD_TEXT(card, 1, "lnkfail");
	QETH_CARD_TEXT_(card, 1, "%04x %02x",
3193 3194
		       (u16)qdio_err, (u8)sbalf15);
	return QETH_SEND_ERROR_LINK_FAILURE;
F
Frank Blaschka 已提交
3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206
}

/*
 * 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
3207
			QETH_CARD_TEXT(queue->card, 6, "np->pack");
F
Frank Blaschka 已提交
3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229
			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
3230
			QETH_CARD_TEXT(queue->card, 6, "pack->np");
F
Frank Blaschka 已提交
3231 3232 3233 3234
			if (queue->card->options.performance_stats)
				queue->card->perf_stats.sc_p_dp++;
			queue->do_pack = 0;
			/* flush packing buffers */
3235
			buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3236 3237 3238 3239
			if ((atomic_read(&buffer->state) ==
						QETH_QDIO_BUF_EMPTY) &&
			    (buffer->next_element_to_fill > 0)) {
				atomic_set(&buffer->state,
3240
					   QETH_QDIO_BUF_PRIMED);
F
Frank Blaschka 已提交
3241 3242 3243 3244 3245 3246 3247 3248 3249 3250
				flush_count++;
				queue->next_buf_to_fill =
					(queue->next_buf_to_fill + 1) %
					QDIO_MAX_BUFFERS_PER_Q;
			}
		}
	}
	return flush_count;
}

3251

F
Frank Blaschka 已提交
3252 3253 3254 3255 3256 3257 3258 3259 3260
/*
 * 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;

3261
	buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272
	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
3273 3274
static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
			       int count)
F
Frank Blaschka 已提交
3275 3276 3277 3278 3279 3280 3281
{
	struct qeth_qdio_out_buffer *buf;
	int rc;
	int i;
	unsigned int qdio_flags;

	for (i = index; i < index + count; ++i) {
3282 3283
		int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
		buf = queue->bufs[bidx];
3284 3285
		buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
				SBAL_EFLAGS_LAST_ENTRY;
F
Frank Blaschka 已提交
3286

3287 3288 3289
		if (queue->bufstates)
			queue->bufstates[bidx].user = buf;

F
Frank Blaschka 已提交
3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300
		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);
3301
				buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
F
Frank Blaschka 已提交
3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313
			}
		} 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);
3314
				buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
F
Frank Blaschka 已提交
3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328
			}
		}
	}

	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
3329
		     queue->queue_no, index, count);
F
Frank Blaschka 已提交
3330 3331 3332 3333
	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;
3334
	atomic_add(count, &queue->used_buffers);
F
Frank Blaschka 已提交
3335
	if (rc) {
3336 3337
		queue->card->stats.tx_errors += count;
		/* ignore temporary SIGA errors without busy condition */
3338
		if (rc == -ENOBUFS)
3339
			return;
C
Carsten Otte 已提交
3340
		QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3341 3342 3343
		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
3344
		QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3345

F
Frank Blaschka 已提交
3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388
		/* 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
3389
				qeth_flush_buffers(queue, index, flush_cnt);
F
Frank Blaschka 已提交
3390 3391 3392 3393 3394
			atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
		}
	}
}

3395 3396 3397 3398 3399
void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
		unsigned long card_ptr)
{
	struct qeth_card *card = (struct qeth_card *)card_ptr;

3400
	if (card->dev && (card->dev->flags & IFF_UP))
3401 3402 3403 3404
		napi_schedule(&card->napi);
}
EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);

3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 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
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;
}

3504
void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3505
		unsigned int queue, int first_elem, int count,
3506 3507 3508 3509
		unsigned long card_ptr)
{
	struct qeth_card *card = (struct qeth_card *)card_ptr;

3510 3511 3512 3513 3514 3515
	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)
3516
		qeth_schedule_recovery(card);
3517 3518


3519 3520 3521
}
EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);

J
Jan Glauber 已提交
3522 3523 3524
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
3525 3526 3527 3528 3529 3530
{
	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
3531
	QETH_CARD_TEXT(card, 6, "qdouhdl");
3532
	if (qdio_error & QDIO_ERROR_FATAL) {
C
Carsten Otte 已提交
3533
		QETH_CARD_TEXT(card, 2, "achkcond");
J
Jan Glauber 已提交
3534 3535 3536
		netif_stop_queue(card->dev);
		qeth_schedule_recovery(card);
		return;
F
Frank Blaschka 已提交
3537 3538 3539 3540 3541 3542 3543
	}
	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) {
3544 3545
		int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
		buffer = queue->bufs[bidx];
3546
		qeth_handle_send_error(card, buffer, qdio_error);
3547 3548 3549 3550

		if (queue->bufstates &&
		    (queue->bufstates[bidx].flags &
		     QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3551 3552 3553 3554 3555 3556 3557 3558 3559
			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);
			}
3560 3561
			buffer->aob = queue->bufstates[bidx].aob;
			QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3562
			QETH_CARD_TEXT(queue->card, 5, "aob");
3563 3564 3565
			QETH_CARD_TEXT_(queue->card, 5, "%lx",
					virt_to_phys(buffer->aob));
			BUG_ON(bidx < 0 || bidx >= QDIO_MAX_BUFFERS_PER_Q);
3566 3567
			if (qeth_init_qdio_out_buf(queue, bidx)) {
				QETH_CARD_TEXT(card, 2, "outofbuf");
3568
				qeth_schedule_recovery(card);
3569
			}
3570
		} else {
3571 3572 3573 3574 3575 3576 3577 3578
			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);
			}

3579 3580 3581 3582
			qeth_clear_output_buffer(queue, buffer,
						QETH_QDIO_BUF_EMPTY);
		}
		qeth_cleanup_handled_pending(queue, bidx, 0);
F
Frank Blaschka 已提交
3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598
	}
	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)
{
3599 3600
	if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD ||
		     card->info.type == QETH_CARD_TYPE_OSX))
F
Frank Blaschka 已提交
3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637
		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)
{
3638 3639 3640
	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
3641

3642
	elements_needed += skb_shinfo(skb)->nr_frags;
F
Frank Blaschka 已提交
3643
	if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3644
		QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
F
Frank Blaschka 已提交
3645 3646 3647 3648 3649 3650 3651 3652
			"(Number=%d / Length=%d). Discarded.\n",
			(elements_needed+elems), skb->len);
		return 0;
	}
	return elements_needed;
}
EXPORT_SYMBOL_GPL(qeth_get_elements_no);

3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671
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
3672
static inline void __qeth_fill_buffer(struct sk_buff *skb,
3673 3674
	struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
	int offset)
F
Frank Blaschka 已提交
3675
{
3676
	int length = skb->len - skb->data_len;
F
Frank Blaschka 已提交
3677 3678 3679
	int length_here;
	int element;
	char *data;
3680 3681
	int first_lap, cnt;
	struct skb_frag_struct *frag;
F
Frank Blaschka 已提交
3682 3683 3684 3685 3686

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

3687 3688
	if (offset >= 0) {
		data = skb->data + offset;
3689
		length -= offset;
3690 3691 3692
		first_lap = 0;
	}

F
Frank Blaschka 已提交
3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703
	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)
3704
				if (skb_shinfo(skb)->nr_frags)
3705 3706
					buffer->element[element].eflags =
						SBAL_EFLAGS_FIRST_FRAG;
3707
				else
3708
					buffer->element[element].eflags = 0;
F
Frank Blaschka 已提交
3709
			else
3710 3711
				buffer->element[element].eflags =
				    SBAL_EFLAGS_MIDDLE_FRAG;
F
Frank Blaschka 已提交
3712 3713
		} else {
			if (first_lap)
3714 3715
				buffer->element[element].eflags =
				    SBAL_EFLAGS_FIRST_FRAG;
F
Frank Blaschka 已提交
3716
			else
3717 3718
				buffer->element[element].eflags =
				    SBAL_EFLAGS_MIDDLE_FRAG;
F
Frank Blaschka 已提交
3719 3720 3721 3722 3723
		}
		data += length_here;
		element++;
		first_lap = 0;
	}
3724 3725 3726

	for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
		frag = &skb_shinfo(skb)->frags[cnt];
3727 3728
		buffer->element[element].addr = (char *)
			page_to_phys(skb_frag_page(frag))
3729 3730
			+ frag->page_offset;
		buffer->element[element].length = frag->size;
3731
		buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
3732 3733 3734
		element++;
	}

3735 3736
	if (buffer->element[element - 1].eflags)
		buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
F
Frank Blaschka 已提交
3737 3738 3739
	*next_element_to_fill = element;
}

F
Frank Blaschka 已提交
3740
static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3741 3742
		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
3743 3744 3745 3746 3747 3748 3749 3750 3751
{
	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 ....*/
3752
	if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
F
Frank Blaschka 已提交
3753 3754
		int element = buf->next_element_to_fill;

3755 3756
		hdr_len = sizeof(struct qeth_hdr_tso) +
			((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
F
Frank Blaschka 已提交
3757 3758 3759
		/*fill first buffer entry only with header information */
		buffer->element[element].addr = skb->data;
		buffer->element[element].length = hdr_len;
3760
		buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
F
Frank Blaschka 已提交
3761 3762 3763 3764 3765
		buf->next_element_to_fill++;
		skb->data += hdr_len;
		skb->len  -= hdr_len;
		large_send = 1;
	}
3766 3767 3768 3769 3770 3771

	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;
3772
		buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
3773 3774 3775 3776
		buf->is_header[element] = 1;
		buf->next_element_to_fill++;
	}

3777 3778
	__qeth_fill_buffer(skb, buffer, large_send,
		(int *)&buf->next_element_to_fill, offset);
F
Frank Blaschka 已提交
3779 3780

	if (!queue->do_pack) {
C
Carsten Otte 已提交
3781
		QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
F
Frank Blaschka 已提交
3782 3783 3784 3785
		/* 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
3786
		QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
F
Frank Blaschka 已提交
3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804
		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
3805
		int offset, int hd_len)
F
Frank Blaschka 已提交
3806 3807 3808 3809 3810 3811 3812 3813 3814
{
	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;
3815
	buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3816 3817 3818 3819 3820 3821
	/*
	 * 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
3822
	queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
F
Frank Blaschka 已提交
3823 3824
					  QDIO_MAX_BUFFERS_PER_Q;
	atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
F
Frank Blaschka 已提交
3825 3826
	qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
	qeth_flush_buffers(queue, index, 1);
F
Frank Blaschka 已提交
3827 3828 3829 3830 3831 3832 3833 3834 3835
	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
3836
		int elements_needed)
F
Frank Blaschka 已提交
3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848
{
	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;
3849
	buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861
	/*
	 * 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
3862 3863 3864 3865 3866 3867 3868 3869 3870
		/* 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;
3871
			buffer = queue->bufs[queue->next_buf_to_fill];
F
Frank Blaschka 已提交
3872 3873 3874 3875 3876
			/* 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
3877
							   flush_count);
F
Frank Blaschka 已提交
3878
				atomic_set(&queue->state,
F
Frank Blaschka 已提交
3879
						QETH_OUT_Q_UNLOCKED);
F
Frank Blaschka 已提交
3880
				return -EBUSY;
F
Frank Blaschka 已提交
3881 3882 3883
			}
		}
	}
F
Frank Blaschka 已提交
3884
	tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
F
Frank Blaschka 已提交
3885 3886 3887 3888
	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
3889
		qeth_flush_buffers(queue, start_index, flush_count);
F
Frank Blaschka 已提交
3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909
	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
3910
			qeth_flush_buffers(queue, start_index, flush_count);
F
Frank Blaschka 已提交
3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925
	}
	/* 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
3926
	QETH_CARD_TEXT(card, 4, "prmadpcb");
F
Frank Blaschka 已提交
3927 3928 3929 3930 3931 3932

	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
3933
		QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
F
Frank Blaschka 已提交
3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946
		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
3947
	QETH_CARD_TEXT(card, 4, "setprom");
F
Frank Blaschka 已提交
3948 3949 3950 3951 3952 3953 3954 3955 3956

	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
3957
	QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
F
Frank Blaschka 已提交
3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971

	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];

3972
	card = dev->ml_priv;
F
Frank Blaschka 已提交
3973

C
Carsten Otte 已提交
3974
	QETH_CARD_TEXT(card, 4, "chgmtu");
F
Frank Blaschka 已提交
3975
	sprintf(dbf_text, "%8x", new_mtu);
C
Carsten Otte 已提交
3976
	QETH_CARD_TEXT(card, 4, dbf_text);
F
Frank Blaschka 已提交
3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993

	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;

3994
	card = dev->ml_priv;
F
Frank Blaschka 已提交
3995

C
Carsten Otte 已提交
3996
	QETH_CARD_TEXT(card, 5, "getstat");
F
Frank Blaschka 已提交
3997 3998 3999 4000 4001 4002 4003 4004 4005 4006

	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
4007
	QETH_CARD_TEXT(card, 4, "chgmaccb");
F
Frank Blaschka 已提交
4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026

	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
4027
	QETH_CARD_TEXT(card, 4, "chgmac");
F
Frank Blaschka 已提交
4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041

	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
4042 4043 4044 4045 4046 4047
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
4048
	QETH_CARD_TEXT(card, 4, "setaccb");
E
Einar Lueck 已提交
4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129

	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);
4130
	return 0;
E
Einar Lueck 已提交
4131 4132 4133 4134 4135 4136 4137 4138 4139 4140
}

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
4141
	QETH_CARD_TEXT(card, 4, "setacctl");
E
Einar Lueck 已提交
4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162

	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
4163
	QETH_CARD_TEXT(card, 4, "setactlo");
E
Einar Lueck 已提交
4164

4165 4166 4167
	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
4168 4169 4170 4171
		rc = qeth_setadpparms_set_access_ctrl(card,
			card->options.isolation);
		if (rc) {
			QETH_DBF_MESSAGE(3,
4172
				"IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
E
Einar Lueck 已提交
4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186
				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
4187 4188 4189 4190
void qeth_tx_timeout(struct net_device *dev)
{
	struct qeth_card *card;

4191
	card = dev->ml_priv;
C
Carsten Otte 已提交
4192
	QETH_CARD_TEXT(card, 4, "txtimeo");
F
Frank Blaschka 已提交
4193 4194 4195 4196 4197 4198 4199
	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)
{
4200
	struct qeth_card *card = dev->ml_priv;
F
Frank Blaschka 已提交
4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270
	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
4271
	QETH_CARD_TEXT(card, 4, "sendsnmp");
F
Frank Blaschka 已提交
4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295

	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
4296
	QETH_CARD_TEXT(card, 3, "snpcmdcb");
F
Frank Blaschka 已提交
4297 4298 4299 4300 4301 4302 4303

	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
4304
		QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
F
Frank Blaschka 已提交
4305 4306 4307 4308 4309
		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
4310
		QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
F
Frank Blaschka 已提交
4311 4312 4313 4314 4315 4316 4317 4318 4319 4320
		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
4321
		QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4322
		cmd->hdr.return_code = IPA_RC_ENOMEM;
F
Frank Blaschka 已提交
4323 4324
		return 0;
	}
C
Carsten Otte 已提交
4325
	QETH_CARD_TEXT_(card, 4, "snore%i",
F
Frank Blaschka 已提交
4326
		       cmd->data.setadapterparms.hdr.used_total);
C
Carsten Otte 已提交
4327
	QETH_CARD_TEXT_(card, 4, "sseqn%i",
F
Frank Blaschka 已提交
4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340
		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
4341
		QETH_CARD_TEXT_(card, 4, "srtot%i",
F
Frank Blaschka 已提交
4342
			       cmd->data.setadapterparms.hdr.used_total);
C
Carsten Otte 已提交
4343
		QETH_CARD_TEXT_(card, 4, "srseq%i",
F
Frank Blaschka 已提交
4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359
			       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
4360
	QETH_CARD_TEXT(card, 3, "snmpcmd");
F
Frank Blaschka 已提交
4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371

	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;
4372 4373
	ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
	if (IS_ERR(ureq)) {
C
Carsten Otte 已提交
4374
		QETH_CARD_TEXT(card, 2, "snmpnome");
4375
		return PTR_ERR(ureq);
F
Frank Blaschka 已提交
4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391
	}
	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)
4392
		QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
F
Frank Blaschka 已提交
4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404
			   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);

4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502
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
4503 4504 4505 4506 4507 4508 4509 4510 4511 4512
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;
	}
}

4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539
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);
4540 4541
	if (ddev_offline)
		qeth_configure_blkt_default(card, prcd);
4542 4543 4544 4545 4546 4547
	kfree(prcd);

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

4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561
	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;
	}


4562 4563 4564 4565 4566 4567 4568
out_offline:
	if (ddev_offline == 1)
		ccw_device_set_offline(ddev);
out:
	return;
}

4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586
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
4587 4588 4589 4590 4591
static int qeth_qdio_establish(struct qeth_card *card)
{
	struct qdio_initialize init_data;
	char *qib_param_field;
	struct qdio_buffer **in_sbal_ptrs;
4592
	void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
F
Frank Blaschka 已提交
4593 4594 4595 4596
	struct qdio_buffer **out_sbal_ptrs;
	int i, j, k;
	int rc = 0;

4597
	QETH_DBF_TEXT(SETUP, 2, "qdioest");
F
Frank Blaschka 已提交
4598 4599 4600

	qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
			      GFP_KERNEL);
4601 4602 4603 4604
	if (!qib_param_field) {
		rc =  -ENOMEM;
		goto out_free_nothing;
	}
F
Frank Blaschka 已提交
4605 4606 4607 4608

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

4609
	in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4610
			       QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
F
Frank Blaschka 已提交
4611 4612
			       GFP_KERNEL);
	if (!in_sbal_ptrs) {
4613 4614
		rc = -ENOMEM;
		goto out_free_qib_param;
F
Frank Blaschka 已提交
4615
	}
4616
	for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
F
Frank Blaschka 已提交
4617 4618
		in_sbal_ptrs[i] = (struct qdio_buffer *)
			virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4619
	}
F
Frank Blaschka 已提交
4620

4621 4622
	queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
				   GFP_KERNEL);
4623 4624 4625 4626
	if (!queue_start_poll) {
		rc = -ENOMEM;
		goto out_free_in_sbals;
	}
4627
	for (i = 0; i < card->qdio.no_in_queues; ++i)
4628
		queue_start_poll[i] = card->discipline->start_poll;
4629 4630

	qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
4631

F
Frank Blaschka 已提交
4632
	out_sbal_ptrs =
4633
		kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
F
Frank Blaschka 已提交
4634 4635
			sizeof(void *), GFP_KERNEL);
	if (!out_sbal_ptrs) {
4636 4637
		rc = -ENOMEM;
		goto out_free_queue_start_poll;
F
Frank Blaschka 已提交
4638 4639 4640 4641
	}
	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(
4642
				card->qdio.out_qs[i]->bufs[j]->buffer);
F
Frank Blaschka 已提交
4643 4644 4645 4646 4647 4648 4649
		}

	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;
4650
	init_data.no_input_qs            = card->qdio.no_in_queues;
F
Frank Blaschka 已提交
4651
	init_data.no_output_qs           = card->qdio.no_out_queues;
4652 4653
	init_data.input_handler 	 = card->discipline->input_handler;
	init_data.output_handler	 = card->discipline->output_handler;
4654
	init_data.queue_start_poll_array = queue_start_poll;
F
Frank Blaschka 已提交
4655 4656 4657
	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;
4658
	init_data.output_sbal_state_array = card->qdio.out_bufstates;
4659 4660
	init_data.scan_threshold =
		(card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
F
Frank Blaschka 已提交
4661 4662 4663

	if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
		QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
J
Jan Glauber 已提交
4664 4665 4666 4667 4668 4669 4670
		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
4671
			atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
J
Jan Glauber 已提交
4672 4673
			qdio_free(CARD_DDEV(card));
		}
F
Frank Blaschka 已提交
4674
	}
4675 4676 4677 4678 4679 4680 4681 4682 4683 4684 4685

	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
4686
out:
F
Frank Blaschka 已提交
4687
	kfree(out_sbal_ptrs);
4688 4689 4690
out_free_queue_start_poll:
	kfree(queue_start_poll);
out_free_in_sbals:
F
Frank Blaschka 已提交
4691
	kfree(in_sbal_ptrs);
4692
out_free_qib_param:
F
Frank Blaschka 已提交
4693
	kfree(qib_param_field);
4694
out_free_nothing:
F
Frank Blaschka 已提交
4695 4696 4697 4698 4699 4700
	return rc;
}

static void qeth_core_free_card(struct qeth_card *card)
{

4701 4702
	QETH_DBF_TEXT(SETUP, 2, "freecrd");
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
F
Frank Blaschka 已提交
4703 4704 4705 4706 4707 4708
	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);
4709
	unregister_service_level(&card->qeth_service_level);
F
Frank Blaschka 已提交
4710 4711 4712 4713
	kfree(card);
}

static struct ccw_device_id qeth_ids[] = {
4714 4715 4716 4717 4718 4719 4720 4721 4722 4723
	{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
4724 4725 4726 4727 4728
	{},
};
MODULE_DEVICE_TABLE(ccw, qeth_ids);

static struct ccw_driver qeth_ccw_driver = {
4729
	.driver = {
S
Sebastian Ott 已提交
4730
		.owner = THIS_MODULE,
4731 4732
		.name = "qeth",
	},
F
Frank Blaschka 已提交
4733 4734 4735 4736 4737 4738 4739
	.ids = qeth_ids,
	.probe = ccwgroup_probe_ccwdev,
	.remove = ccwgroup_remove_ccwdev,
};

int qeth_core_hardsetup_card(struct qeth_card *card)
{
4740
	int retries = 0;
F
Frank Blaschka 已提交
4741 4742
	int rc;

4743
	QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
F
Frank Blaschka 已提交
4744
	atomic_set(&card->force_alloc_skb, 0);
4745
	qeth_get_channel_path_desc(card);
F
Frank Blaschka 已提交
4746
retry:
4747
	if (retries)
4748 4749
		QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
			dev_name(&card->gdev->dev));
4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761
	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
4762
	rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
4763
retriable:
F
Frank Blaschka 已提交
4764
	if (rc == -ERESTARTSYS) {
4765
		QETH_DBF_TEXT(SETUP, 2, "break1");
F
Frank Blaschka 已提交
4766 4767
		return rc;
	} else if (rc) {
4768
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
4769
		if (++retries > 3)
F
Frank Blaschka 已提交
4770 4771 4772 4773
			goto out;
		else
			goto retry;
	}
4774
	qeth_determine_capabilities(card);
F
Frank Blaschka 已提交
4775 4776 4777 4778
	qeth_init_tokens(card);
	qeth_init_func_level(card);
	rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
	if (rc == -ERESTARTSYS) {
4779
		QETH_DBF_TEXT(SETUP, 2, "break2");
F
Frank Blaschka 已提交
4780 4781
		return rc;
	} else if (rc) {
4782
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
F
Frank Blaschka 已提交
4783 4784 4785 4786 4787 4788 4789
		if (--retries < 0)
			goto out;
		else
			goto retry;
	}
	rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
	if (rc == -ERESTARTSYS) {
4790
		QETH_DBF_TEXT(SETUP, 2, "break3");
F
Frank Blaschka 已提交
4791 4792
		return rc;
	} else if (rc) {
4793
		QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
F
Frank Blaschka 已提交
4794 4795 4796 4797 4798
		if (--retries < 0)
			goto out;
		else
			goto retry;
	}
4799
	card->read_or_write_problem = 0;
F
Frank Blaschka 已提交
4800 4801
	rc = qeth_mpc_initialize(card);
	if (rc) {
4802
		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
F
Frank Blaschka 已提交
4803 4804
		goto out;
	}
4805 4806 4807 4808 4809 4810 4811 4812 4813

	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
4814 4815
	return 0;
out:
4816 4817 4818 4819
	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
4820 4821 4822 4823
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);

4824 4825
static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
		struct qdio_buffer_element *element,
F
Frank Blaschka 已提交
4826 4827 4828 4829
		struct sk_buff **pskb, int offset, int *pfrag, int data_len)
{
	struct page *page = virt_to_page(element->addr);
	if (*pskb == NULL) {
4830 4831 4832 4833 4834 4835 4836 4837 4838 4839
		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
4840
		skb_reserve(*pskb, ETH_HLEN);
4841
		if (data_len <= QETH_RX_PULL_LEN) {
F
Frank Blaschka 已提交
4842 4843 4844 4845
			memcpy(skb_put(*pskb, data_len), element->addr + offset,
				data_len);
		} else {
			get_page(page);
4846 4847 4848 4849 4850 4851 4852 4853
			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
4854 4855 4856 4857 4858 4859 4860 4861 4862 4863
			(*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)++;
	}
4864 4865


F
Frank Blaschka 已提交
4866 4867 4868 4869
	return 0;
}

struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
4870
		struct qeth_qdio_buffer *qethbuffer,
F
Frank Blaschka 已提交
4871 4872 4873 4874
		struct qdio_buffer_element **__element, int *__offset,
		struct qeth_hdr **hdr)
{
	struct qdio_buffer_element *element = *__element;
4875
	struct qdio_buffer *buffer = qethbuffer->buffer;
F
Frank Blaschka 已提交
4876 4877
	int offset = *__offset;
	struct sk_buff *skb = NULL;
4878
	int skb_len = 0;
F
Frank Blaschka 已提交
4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896
	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);
4897 4898 4899 4900 4901
	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
4902
		skb_len = (*hdr)->hdr.l3.length;
4903
		headroom = ETH_HLEN;
4904 4905 4906 4907 4908 4909 4910
		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
4911 4912 4913 4914 4915
	}

	if (!skb_len)
		return NULL;

4916 4917 4918 4919
	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
4920 4921 4922 4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933
		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) {
4934 4935
				if (qeth_create_skb_frag(qethbuffer, element,
				    &skb, offset, &frag, data_len))
F
Frank Blaschka 已提交
4936 4937 4938 4939 4940 4941 4942 4943 4944
					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
4945
				QETH_CARD_TEXT(card, 4, "unexeob");
C
Carsten Otte 已提交
4946
				QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
F
Frank Blaschka 已提交
4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964 4965 4966
				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
4967
		QETH_CARD_TEXT(card, 2, "noskbmem");
F
Frank Blaschka 已提交
4968 4969 4970 4971 4972 4973 4974 4975
	}
	card->stats.rx_dropped++;
	return NULL;
}
EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);

static void qeth_unregister_dbf_views(void)
{
4976 4977 4978 4979 4980
	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
4981 4982
}

C
Carsten Otte 已提交
4983
void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
P
Peter Tiedemann 已提交
4984 4985
{
	char dbf_txt_buf[32];
4986
	va_list args;
P
Peter Tiedemann 已提交
4987

C
Carsten Otte 已提交
4988
	if (level > id->level)
P
Peter Tiedemann 已提交
4989
		return;
4990 4991 4992
	va_start(args, fmt);
	vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
	va_end(args);
C
Carsten Otte 已提交
4993
	debug_text_event(id, level, dbf_txt_buf);
P
Peter Tiedemann 已提交
4994 4995 4996
}
EXPORT_SYMBOL_GPL(qeth_dbf_longtext);

F
Frank Blaschka 已提交
4997 4998
static int qeth_register_dbf_views(void)
{
4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011
	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
5012

5013 5014 5015 5016 5017 5018
		/* 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
5019

5020 5021 5022
		/* set a passing level */
		debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
	}
F
Frank Blaschka 已提交
5023 5024 5025 5026 5027 5028 5029 5030

	return 0;
}

int qeth_core_load_discipline(struct qeth_card *card,
		enum qeth_discipline_id discipline)
{
	int rc = 0;
5031
	mutex_lock(&qeth_mod_mutex);
F
Frank Blaschka 已提交
5032 5033
	switch (discipline) {
	case QETH_DISCIPLINE_LAYER3:
5034 5035
		card->discipline = try_then_request_module(
			symbol_get(qeth_l3_discipline), "qeth_l3");
F
Frank Blaschka 已提交
5036 5037
		break;
	case QETH_DISCIPLINE_LAYER2:
5038 5039
		card->discipline = try_then_request_module(
			symbol_get(qeth_l2_discipline), "qeth_l2");
F
Frank Blaschka 已提交
5040 5041
		break;
	}
5042
	if (!card->discipline) {
5043 5044
		dev_err(&card->gdev->dev, "There is no kernel module to "
			"support discipline %d\n", discipline);
F
Frank Blaschka 已提交
5045 5046
		rc = -EINVAL;
	}
5047
	mutex_unlock(&qeth_mod_mutex);
F
Frank Blaschka 已提交
5048 5049 5050 5051 5052 5053
	return rc;
}

void qeth_core_free_discipline(struct qeth_card *card)
{
	if (card->options.layer2)
5054
		symbol_put(qeth_l2_discipline);
F
Frank Blaschka 已提交
5055
	else
5056 5057
		symbol_put(qeth_l3_discipline);
	card->discipline = NULL;
F
Frank Blaschka 已提交
5058 5059
}

5060 5061 5062 5063 5064 5065 5066 5067 5068
static const struct device_type qeth_generic_devtype = {
	.name = "qeth_generic",
	.groups = qeth_generic_attr_groups,
};
static const struct device_type qeth_osn_devtype = {
	.name = "qeth_osn",
	.groups = qeth_osn_attr_groups,
};

F
Frank Blaschka 已提交
5069 5070 5071 5072 5073 5074
static int qeth_core_probe_device(struct ccwgroup_device *gdev)
{
	struct qeth_card *card;
	struct device *dev;
	int rc;
	unsigned long flags;
5075
	char dbf_name[20];
F
Frank Blaschka 已提交
5076

5077
	QETH_DBF_TEXT(SETUP, 2, "probedev");
F
Frank Blaschka 已提交
5078 5079 5080 5081 5082

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

5083
	QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
F
Frank Blaschka 已提交
5084 5085 5086

	card = qeth_alloc_card();
	if (!card) {
5087
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
F
Frank Blaschka 已提交
5088 5089 5090
		rc = -ENOMEM;
		goto err_dev;
	}
5091 5092 5093 5094 5095 5096 5097 5098 5099 5100 5101

	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
5102 5103 5104 5105 5106 5107 5108 5109 5110 5111 5112
	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) {
5113
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5114
		goto err_dbf;
F
Frank Blaschka 已提交
5115 5116 5117
	}
	rc = qeth_setup_card(card);
	if (rc) {
5118
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5119
		goto err_dbf;
F
Frank Blaschka 已提交
5120 5121
	}

5122
	if (card->info.type == QETH_CARD_TYPE_OSN)
5123
		gdev->dev.type = &qeth_osn_devtype;
5124
	else
5125 5126
		gdev->dev.type = &qeth_generic_devtype;

5127 5128 5129
	switch (card->info.type) {
	case QETH_CARD_TYPE_OSN:
	case QETH_CARD_TYPE_OSM:
F
Frank Blaschka 已提交
5130
		rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
5131
		if (rc)
5132
			goto err_dbf;
5133
		rc = card->discipline->setup(card->gdev);
F
Frank Blaschka 已提交
5134
		if (rc)
5135 5136 5137 5138 5139
			goto err_disc;
	case QETH_CARD_TYPE_OSD:
	case QETH_CARD_TYPE_OSX:
	default:
		break;
F
Frank Blaschka 已提交
5140 5141 5142 5143 5144
	}

	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);
5145 5146

	qeth_determine_capabilities(card);
F
Frank Blaschka 已提交
5147 5148
	return 0;

5149 5150
err_disc:
	qeth_core_free_discipline(card);
5151 5152
err_dbf:
	debug_unregister(card->debug);
F
Frank Blaschka 已提交
5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164
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);

5165
	QETH_DBF_TEXT(SETUP, 2, "removedv");
F
Frank Blaschka 已提交
5166

5167 5168
	if (card->discipline) {
		card->discipline->remove(gdev);
5169 5170 5171
		qeth_core_free_discipline(card);
	}

5172
	debug_unregister(card->debug);
F
Frank Blaschka 已提交
5173 5174 5175 5176 5177 5178 5179 5180 5181 5182 5183 5184 5185 5186 5187
	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;

5188
	if (!card->discipline) {
F
Frank Blaschka 已提交
5189 5190 5191 5192 5193 5194 5195
		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;
5196
		rc = card->discipline->setup(card->gdev);
F
Frank Blaschka 已提交
5197 5198 5199
		if (rc)
			goto err;
	}
5200
	rc = card->discipline->set_online(gdev);
F
Frank Blaschka 已提交
5201 5202 5203 5204 5205 5206 5207
err:
	return rc;
}

static int qeth_core_set_offline(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5208
	return card->discipline->set_offline(gdev);
F
Frank Blaschka 已提交
5209 5210 5211 5212 5213
}

static void qeth_core_shutdown(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5214 5215
	if (card->discipline && card->discipline->shutdown)
		card->discipline->shutdown(gdev);
F
Frank Blaschka 已提交
5216 5217
}

5218 5219 5220
static int qeth_core_prepare(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5221 5222
	if (card->discipline && card->discipline->prepare)
		return card->discipline->prepare(gdev);
5223 5224 5225 5226 5227 5228
	return 0;
}

static void qeth_core_complete(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5229 5230
	if (card->discipline && card->discipline->complete)
		card->discipline->complete(gdev);
5231 5232 5233 5234 5235
}

static int qeth_core_freeze(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5236 5237
	if (card->discipline && card->discipline->freeze)
		return card->discipline->freeze(gdev);
5238 5239 5240 5241 5242 5243
	return 0;
}

static int qeth_core_thaw(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5244 5245
	if (card->discipline && card->discipline->thaw)
		return card->discipline->thaw(gdev);
5246 5247 5248 5249 5250 5251
	return 0;
}

static int qeth_core_restore(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5252 5253
	if (card->discipline && card->discipline->restore)
		return card->discipline->restore(gdev);
5254 5255 5256
	return 0;
}

F
Frank Blaschka 已提交
5257
static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5258 5259 5260 5261
	.driver = {
		.owner = THIS_MODULE,
		.name = "qeth",
	},
5262
	.setup = qeth_core_probe_device,
F
Frank Blaschka 已提交
5263 5264 5265 5266
	.remove = qeth_core_remove_device,
	.set_online = qeth_core_set_online,
	.set_offline = qeth_core_set_offline,
	.shutdown = qeth_core_shutdown,
5267 5268 5269 5270 5271
	.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
5272 5273
};

5274 5275
static ssize_t qeth_core_driver_group_store(struct device_driver *ddrv,
					    const char *buf, size_t count)
F
Frank Blaschka 已提交
5276 5277 5278
{
	int err;

5279 5280 5281 5282 5283
	err = ccwgroup_create_dev(qeth_core_root_dev,
				  &qeth_core_ccwgroup_driver, 3, buf);

	return err ? err : count;
}
F
Frank Blaschka 已提交
5284 5285
static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);

5286 5287 5288 5289 5290 5291 5292 5293 5294 5295 5296 5297
static struct attribute *qeth_drv_attrs[] = {
	&driver_attr_group.attr,
	NULL,
};
static struct attribute_group qeth_drv_attr_group = {
	.attrs = qeth_drv_attrs,
};
static const struct attribute_group *qeth_drv_attr_groups[] = {
	&qeth_drv_attr_group,
	NULL,
};

F
Frank Blaschka 已提交
5298 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
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"},
5324 5325
	{"rx poll time"},
	{"rx poll count"},
F
Frank Blaschka 已提交
5326 5327 5328 5329 5330 5331 5332 5333
	{"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"},
5334
	{"tx csum"},
F
Frank Blaschka 已提交
5335
	{"tx lin"},
5336 5337
	{"cq handler count"},
	{"cq handler time"}
F
Frank Blaschka 已提交
5338 5339
};

5340
int qeth_core_get_sset_count(struct net_device *dev, int stringset)
F
Frank Blaschka 已提交
5341
{
5342 5343 5344 5345 5346 5347
	switch (stringset) {
	case ETH_SS_STATS:
		return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
	default:
		return -EINVAL;
	}
F
Frank Blaschka 已提交
5348
}
5349
EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
F
Frank Blaschka 已提交
5350 5351 5352 5353

void qeth_core_get_ethtool_stats(struct net_device *dev,
		struct ethtool_stats *stats, u64 *data)
{
5354
	struct qeth_card *card = dev->ml_priv;
F
Frank Blaschka 已提交
5355 5356 5357 5358 5359 5360 5361 5362 5363 5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379 5380 5381 5382 5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393
	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;
5394
	data[33] = card->perf_stats.tx_csum;
F
Frank Blaschka 已提交
5395
	data[34] = card->perf_stats.tx_lin;
5396 5397
	data[35] = card->perf_stats.cq_cnt;
	data[36] = card->perf_stats.cq_time;
F
Frank Blaschka 已提交
5398 5399 5400 5401 5402 5403 5404 5405 5406 5407 5408 5409 5410 5411 5412 5413 5414 5415 5416 5417
}
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)
{
5418
	struct qeth_card *card = dev->ml_priv;
F
Frank Blaschka 已提交
5419 5420 5421 5422 5423 5424 5425 5426 5427 5428 5429 5430 5431 5432
	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);

5433 5434 5435
int qeth_core_ethtool_get_settings(struct net_device *netdev,
					struct ethtool_cmd *ecmd)
{
5436
	struct qeth_card *card = netdev->ml_priv;
5437 5438 5439 5440 5441 5442 5443 5444 5445 5446 5447 5448 5449 5450 5451 5452 5453 5454 5455 5456 5457 5458 5459 5460 5461 5462 5463 5464 5465 5466 5467 5468 5469 5470 5471 5472 5473 5474 5475 5476 5477 5478 5479 5480 5481 5482 5483 5484 5485 5486 5487 5488 5489 5490 5491 5492 5493 5494 5495 5496 5497 5498 5499 5500 5501 5502 5503 5504 5505 5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521 5522
	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
5523 5524 5525 5526
static int __init qeth_core_init(void)
{
	int rc;

5527
	pr_info("loading core functions\n");
F
Frank Blaschka 已提交
5528 5529
	INIT_LIST_HEAD(&qeth_core_card_list.list);
	rwlock_init(&qeth_core_card_list.rwlock);
5530
	mutex_init(&qeth_mod_mutex);
F
Frank Blaschka 已提交
5531 5532 5533 5534

	rc = qeth_register_dbf_views();
	if (rc)
		goto out_err;
M
Mark McLoughlin 已提交
5535
	qeth_core_root_dev = root_device_register("qeth");
F
Frank Blaschka 已提交
5536 5537 5538
	rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
	if (rc)
		goto register_err;
5539 5540 5541 5542 5543 5544
	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;
	}
5545 5546 5547 5548 5549 5550
	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;
	}
5551 5552 5553 5554 5555 5556 5557
	rc = ccw_driver_register(&qeth_ccw_driver);
	if (rc)
		goto ccw_err;
	qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
	rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
	if (rc)
		goto ccwgroup_err;
5558

5559
	return 0;
5560 5561 5562 5563 5564

ccwgroup_err:
	ccw_driver_unregister(&qeth_ccw_driver);
ccw_err:
	kmem_cache_destroy(qeth_qdio_outbuf_cache);
5565 5566
cqslab_err:
	kmem_cache_destroy(qeth_core_header_cache);
5567
slab_err:
M
Mark McLoughlin 已提交
5568
	root_device_unregister(qeth_core_root_dev);
F
Frank Blaschka 已提交
5569 5570 5571
register_err:
	qeth_unregister_dbf_views();
out_err:
5572
	pr_err("Initializing the qeth device driver failed\n");
F
Frank Blaschka 已提交
5573 5574 5575 5576 5577 5578 5579
	return rc;
}

static void __exit qeth_core_exit(void)
{
	ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
	ccw_driver_unregister(&qeth_ccw_driver);
5580
	kmem_cache_destroy(qeth_qdio_outbuf_cache);
5581
	kmem_cache_destroy(qeth_core_header_cache);
5582
	root_device_unregister(qeth_core_root_dev);
F
Frank Blaschka 已提交
5583
	qeth_unregister_dbf_views();
5584
	pr_info("core functions removed\n");
F
Frank Blaschka 已提交
5585 5586 5587 5588 5589 5590 5591
}

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");