qeth_core_main.c 124.3 KB
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/*
 *  drivers/s390/net/qeth_core_main.c
 *
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 *    Copyright IBM Corp. 2007, 2009
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 *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
 *		 Frank Pavlic <fpavlic@de.ibm.com>,
 *		 Thomas Spatzier <tspat@de.ibm.com>,
 *		 Frank Blaschka <frank.blaschka@de.ibm.com>
 */

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

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#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/mii.h>
#include <linux/kthread.h>

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#include <asm/ebcdic.h>
#include <asm/io.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_QERR]  = {"qeth_qerr",
				2, 1,   8, 2, &debug_hex_ascii_view, NULL},
	[QETH_DBF_TRACE] = {"qeth_trace",
				4, 1,   8, 3, &debug_hex_ascii_view, NULL},
	[QETH_DBF_MSG]   = {"qeth_msg",
				8, 1, 128, 3, &debug_sprintf_view,   NULL},
	[QETH_DBF_SENSE] = {"qeth_sense",
				2, 1,  64, 2, &debug_hex_ascii_view, NULL},
	[QETH_DBF_MISC]	 = {"qeth_misc",
				2, 1, 256, 2, &debug_hex_ascii_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 device *qeth_core_root_dev;
static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY;
static struct lock_class_key qdio_out_skb_queue_key;

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 *);


static inline void __qeth_fill_buffer_frag(struct sk_buff *skb,
		struct qdio_buffer *buffer, int is_tso,
		int *next_element_to_fill)
{
	struct skb_frag_struct *frag;
	int fragno;
	unsigned long addr;
	int element, cnt, dlen;

	fragno = skb_shinfo(skb)->nr_frags;
	element = *next_element_to_fill;
	dlen = 0;

	if (is_tso)
		buffer->element[element].flags =
			SBAL_FLAGS_MIDDLE_FRAG;
	else
		buffer->element[element].flags =
			SBAL_FLAGS_FIRST_FRAG;
	dlen = skb->len - skb->data_len;
	if (dlen) {
		buffer->element[element].addr = skb->data;
		buffer->element[element].length = dlen;
		element++;
	}
	for (cnt = 0; cnt < fragno; cnt++) {
		frag = &skb_shinfo(skb)->frags[cnt];
		addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
			frag->page_offset;
		buffer->element[element].addr = (char *)addr;
		buffer->element[element].length = frag->size;
		if (cnt < (fragno - 1))
			buffer->element[element].flags =
				SBAL_FLAGS_MIDDLE_FRAG;
		else
			buffer->element[element].flags =
				SBAL_FLAGS_LAST_FRAG;
		element++;
	}
	*next_element_to_fill = element;
}

static inline const char *qeth_get_cardname(struct qeth_card *card)
{
	if (card->info.guestlan) {
		switch (card->info.type) {
		case QETH_CARD_TYPE_OSAE:
			return " Guest LAN QDIO";
		case QETH_CARD_TYPE_IQD:
			return " Guest LAN Hiper";
		default:
			return " unknown";
		}
	} else {
		switch (card->info.type) {
		case QETH_CARD_TYPE_OSAE:
			return " OSD Express";
		case QETH_CARD_TYPE_IQD:
			return " HiperSockets";
		case QETH_CARD_TYPE_OSN:
			return " OSN QDIO";
		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) {
		case QETH_CARD_TYPE_OSAE:
			return "GuestLAN QDIO";
		case QETH_CARD_TYPE_IQD:
			return "GuestLAN Hiper";
		default:
			return "unknown";
		}
	} else {
		switch (card->info.type) {
		case QETH_CARD_TYPE_OSAE:
			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";
		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_DBF_TEXT(TRACE, 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_DBF_TEXT(TRACE, 5, "alocpool");
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	for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
		pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
		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_DBF_TEXT(TRACE, 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);
}

int qeth_set_large_send(struct qeth_card *card,
		enum qeth_large_send_types type)
{
	int rc = 0;

	if (card->dev == NULL) {
		card->options.large_send = type;
		return 0;
	}
	if (card->state == CARD_STATE_UP)
		netif_tx_disable(card->dev);
	card->options.large_send = type;
	switch (card->options.large_send) {
	case QETH_LARGE_SEND_TSO:
		if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
			card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
						NETIF_F_HW_CSUM;
		} else {
			card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
						NETIF_F_HW_CSUM);
			card->options.large_send = QETH_LARGE_SEND_NO;
			rc = -EOPNOTSUPP;
		}
		break;
	default: /* includes QETH_LARGE_SEND_NO */
		card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
					NETIF_F_HW_CSUM);
		break;
	}
	if (card->state == CARD_STATE_UP)
		netif_wake_queue(card->dev);
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_set_large_send);

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

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	QETH_DBF_TEXT(TRACE, 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_DBF_TEXT(TRACE, 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);
		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)
		QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s returned x%X \"%s\"\n",
				ipa_name, com, QETH_CARD_IFNAME(card),
					rc, qeth_get_ipa_msg(rc));
	else
		QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s succeeded\n",
				ipa_name, com, 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_DBF_TEXT(TRACE, 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_MODCCID)
				qeth_issue_ipa_msg(cmd,
						cmd->hdr.return_code, card);
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			return cmd;
		} else {
			switch (cmd->hdr.command) {
			case IPA_CMD_STOPLAN:
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				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:
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				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);
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				card->lan_online = 1;
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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_DBF_TEXT(TRACE, 3, "irla");
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				break;
			case IPA_CMD_UNREGISTER_LOCAL_ADDR:
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				QETH_DBF_TEXT(TRACE, 3, "urla");
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				break;
			default:
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				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_DBF_TEXT(TRACE, 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);
}
EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);

static int qeth_check_idx_response(unsigned char *buffer)
{
	if (!buffer)
		return 0;

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	QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
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	if ((buffer[2] & 0xc0) == 0xc0) {
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		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_DBF_TEXT(TRACE, 2, "ckidxres");
		QETH_DBF_TEXT(TRACE, 2, " idxterm");
		QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
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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;

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	QETH_DBF_TEXT(TRACE, 4, "setupccw");
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	card = CARD_FROM_CDEV(channel->ccwdev);
	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_DBF_TEXT(TRACE, 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_DBF_TEXT(TRACE, 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);
}
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;

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	QETH_DBF_TEXT(TRACE, 4, "sndctlcb");
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	card = CARD_FROM_CDEV(channel->ccwdev);
	if (qeth_check_idx_response(iob->data)) {
		qeth_clear_ipacmd_list(card);
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		if (((iob->data[2] & 0xc0) == 0xc0) && iob->data[4] == 0xf6)
			dev_err(&card->gdev->dev,
				"The qeth device is not configured "
				"for the OSI layer required by z/VM\n");
F
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		qeth_schedule_recovery(card);
		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;

637
	QETH_DBF_TEXT(SETUP, 2, "setupch");
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	for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
		channel->iob[cnt].data = (char *)
			kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
		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)
{
731
	QETH_DBF_TEXT(TRACE, 2, "startrec");
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	if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
		schedule_work(&card->kernel_thread_starter);
}
EXPORT_SYMBOL_GPL(qeth_schedule_recovery);

static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
{
	int dstat, cstat;
	char *sense;

	sense = (char *) irb->ecw;
743 744
	cstat = irb->scsw.cmd.cstat;
	dstat = irb->scsw.cmd.dstat;
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	if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
		     SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
		     SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
749
		QETH_DBF_TEXT(TRACE, 2, "CGENCHK");
750 751 752 753
		dev_warn(&cdev->dev, "The qeth device driver "
			"failed to recover an error on the device\n");
		QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x ",
			dev_name(&cdev->dev), dstat, cstat);
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		print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
				16, 1, irb, 64, 1);
		return 1;
	}

	if (dstat & DEV_STAT_UNIT_CHECK) {
		if (sense[SENSE_RESETTING_EVENT_BYTE] &
		    SENSE_RESETTING_EVENT_FLAG) {
762
			QETH_DBF_TEXT(TRACE, 2, "REVIND");
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			return 1;
		}
		if (sense[SENSE_COMMAND_REJECT_BYTE] &
		    SENSE_COMMAND_REJECT_FLAG) {
767
			QETH_DBF_TEXT(TRACE, 2, "CMDREJi");
768
			return 1;
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		}
		if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
771
			QETH_DBF_TEXT(TRACE, 2, "AFFE");
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			return 1;
		}
		if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
775
			QETH_DBF_TEXT(TRACE, 2, "ZEROSEN");
F
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			return 0;
		}
778
		QETH_DBF_TEXT(TRACE, 2, "DGENCHK");
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			return 1;
	}
	return 0;
}

static long __qeth_check_irb_error(struct ccw_device *cdev,
		unsigned long intparm, struct irb *irb)
{
	if (!IS_ERR(irb))
		return 0;

	switch (PTR_ERR(irb)) {
	case -EIO:
792 793
		QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
			dev_name(&cdev->dev));
794 795
		QETH_DBF_TEXT(TRACE, 2, "ckirberr");
		QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -EIO);
F
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		break;
	case -ETIMEDOUT:
798 799
		dev_warn(&cdev->dev, "A hardware operation timed out"
			" on the device\n");
800 801
		QETH_DBF_TEXT(TRACE, 2, "ckirberr");
		QETH_DBF_TEXT_(TRACE, 2, "  rc%d", -ETIMEDOUT);
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		if (intparm == QETH_RCD_PARM) {
			struct qeth_card *card = CARD_FROM_CDEV(cdev);

			if (card && (card->data.ccwdev == cdev)) {
				card->data.state = CH_STATE_DOWN;
				wake_up(&card->wait_q);
			}
		}
		break;
	default:
812 813
		QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
			dev_name(&cdev->dev), PTR_ERR(irb));
814 815
		QETH_DBF_TEXT(TRACE, 2, "ckirberr");
		QETH_DBF_TEXT(TRACE, 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;

831
	QETH_DBF_TEXT(TRACE, 5, "irq");
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	if (__qeth_check_irb_error(cdev, intparm, irb))
		return;
835 836
	cstat = irb->scsw.cmd.cstat;
	dstat = irb->scsw.cmd.dstat;
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	card = CARD_FROM_CDEV(cdev);
	if (!card)
		return;

	if (card->read.ccwdev == cdev) {
		channel = &card->read;
844
		QETH_DBF_TEXT(TRACE, 5, "read");
F
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	} else if (card->write.ccwdev == cdev) {
		channel = &card->write;
847
		QETH_DBF_TEXT(TRACE, 5, "write");
F
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	} else {
		channel = &card->data;
850
		QETH_DBF_TEXT(TRACE, 5, "data");
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	}
	atomic_set(&channel->irq_pending, 0);

854
	if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
F
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		channel->state = CH_STATE_STOPPED;

857
	if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
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		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) {
866
		QETH_DBF_TEXT(TRACE, 6, "clrchpar");
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		/* we don't have to handle this further */
		intparm = 0;
	}
	if (intparm == QETH_HALT_CHANNEL_PARM) {
871
		QETH_DBF_TEXT(TRACE, 6, "hltchpar");
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		/* 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) {
879 880 881 882 883 884
			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);
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			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) {
896
			qeth_clear_ipacmd_list(card);
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			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;
}

930 931
static void __qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
		 struct qeth_qdio_out_buffer *buf, unsigned int qeth_skip_skb)
F
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{
	int i;
	struct sk_buff *skb;

	/* is PCI flag set on buffer? */
	if (buf->buffer->element[0].flags & 0x40)
		atomic_dec(&queue->set_pci_flags_count);

940
	if (!qeth_skip_skb) {
F
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941
		skb = skb_dequeue(&buf->skb_list);
942 943 944 945 946
		while (skb) {
			atomic_dec(&skb->users);
			dev_kfree_skb_any(skb);
			skb = skb_dequeue(&buf->skb_list);
		}
F
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	}
	for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
949 950 951 952
		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
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		buf->buffer->element[i].length = 0;
		buf->buffer->element[i].addr = NULL;
		buf->buffer->element[i].flags = 0;
	}
957
	buf->buffer->element[15].flags = 0;
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	buf->next_element_to_fill = 0;
	atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
}

962 963 964 965 966 967
static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
		struct qeth_qdio_out_buffer *buf)
{
	__qeth_clear_output_buffer(queue, buf, 0);
}

F
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void qeth_clear_qdio_buffers(struct qeth_card *card)
{
	int i, j;

972
	QETH_DBF_TEXT(TRACE, 2, "clearqdbf");
F
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	/* clear outbound buffers to free skbs */
	for (i = 0; i < card->qdio.no_out_queues; ++i)
		if (card->qdio.out_qs[i]) {
			for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
				qeth_clear_output_buffer(card->qdio.out_qs[i],
						&card->qdio.out_qs[i]->bufs[j]);
		}
}
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;
987
	QETH_DBF_TEXT(TRACE, 5, "freepool");
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	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)
{
	int i, j;

1001
	QETH_DBF_TEXT(TRACE, 2, "freeqdbf");
F
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	if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
		QETH_QDIO_UNINITIALIZED)
		return;
	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) {
			for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
				qeth_clear_output_buffer(card->qdio.out_qs[i],
						&card->qdio.out_qs[i]->bufs[j]);
			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;

1026
	QETH_DBF_TEXT(SETUP, 2, "freech");
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	for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
		kfree(channel->iob[cnt].data);
}

static int qeth_is_1920_device(struct qeth_card *card)
{
	int single_queue = 0;
	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;

1046
	QETH_DBF_TEXT(SETUP, 2, "chk_1920");
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	ccwdev = card->data.ccwdev;
	chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
	if (chp_dsc != NULL) {
		/* CHPP field bit 6 == 1 -> single queue */
		single_queue = ((chp_dsc->chpp & 0x02) == 0x02);
		kfree(chp_dsc);
	}
1055
	QETH_DBF_TEXT_(SETUP, 2, "rc:%x", single_queue);
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	return single_queue;
}

static void qeth_init_qdio_info(struct qeth_card *card)
{
1061
	QETH_DBF_TEXT(SETUP, 4, "intqdinf");
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	atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
	/* inbound */
	card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
	card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
	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.checksum_type = QETH_CHECKSUM_DEFAULT;
	card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
	card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
	card->options.fake_broadcast = 0;
	card->options.add_hhlen = DEFAULT_ADD_HHLEN;
	card->options.performance_stats = 0;
	card->options.rx_sg_cb = QETH_RX_SG_CB;
}

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);
1090
	QETH_DBF_TEXT_(TRACE, 4, "  %02x%02x%02x",
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			(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)
{
	struct qeth_card *card = container_of(work, struct qeth_card,
					kernel_thread_starter);
1103
	QETH_DBF_TEXT(TRACE , 2, "strthrd");
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	if (card->read.state != CH_STATE_UP &&
	    card->write.state != CH_STATE_UP)
		return;
	if (qeth_do_start_thread(card, QETH_RECOVER_THREAD))
		kthread_run(card->discipline.recover, (void *) card,
				"qeth_recover");
}

static int qeth_setup_card(struct qeth_card *card)
{

1116 1117
	QETH_DBF_TEXT(SETUP, 2, "setupcrd");
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
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	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;
	card->use_hard_stop = 0;
	card->dev = NULL;
	spin_lock_init(&card->vlanlock);
	spin_lock_init(&card->mclock);
	card->vlangrp = NULL;
	spin_lock_init(&card->lock);
	spin_lock_init(&card->ip_lock);
	spin_lock_init(&card->thread_mask_lock);
	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);
	card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
	if (!card->ip_tbd_list) {
1139
		QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
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		return -ENOMEM;
	}
	INIT_LIST_HEAD(card->ip_tbd_list);
	INIT_LIST_HEAD(&card->cmd_waiter_list);
	init_waitqueue_head(&card->wait_q);
	/* intial options */
	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;
1152 1153
	if (card->info.type == QETH_CARD_TYPE_IQD)
		card->options.checksum_type = NO_CHECKSUMMING;
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	/* init QDIO stuff */
	qeth_init_qdio_info(card);
	return 0;
}

1159 1160 1161 1162 1163 1164 1165 1166
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);
	seq_printf(m, "qeth: %s firmware level %s\n", CARD_BUS_ID(card),
			card->info.mcl_level);
}

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static struct qeth_card *qeth_alloc_card(void)
{
	struct qeth_card *card;

1171
	QETH_DBF_TEXT(SETUP, 2, "alloccrd");
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	card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
	if (!card)
		return NULL;
1175
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
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	if (qeth_setup_channel(&card->read)) {
		kfree(card);
		return NULL;
	}
	if (qeth_setup_channel(&card->write)) {
		qeth_clean_channel(&card->read);
		kfree(card);
		return NULL;
	}
	card->options.layer2 = -1;
1186 1187
	card->qeth_service_level.seq_print = qeth_core_sl_print;
	register_service_level(&card->qeth_service_level);
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	return card;
}

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

1195
	QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
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	card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
	card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
	while (known_devices[i][4]) {
		if ((CARD_RDEV(card)->id.dev_type == known_devices[i][2]) &&
		    (CARD_RDEV(card)->id.dev_model == known_devices[i][3])) {
			card->info.type = known_devices[i][4];
			card->qdio.no_out_queues = known_devices[i][8];
			card->info.is_multicast_different = known_devices[i][9];
			if (qeth_is_1920_device(card)) {
1206 1207
				dev_info(&card->gdev->dev,
					"Priority Queueing not supported\n");
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				card->qdio.no_out_queues = 1;
				card->qdio.default_out_queue = 0;
			}
			return 0;
		}
		i++;
	}
	card->info.type = QETH_CARD_TYPE_UNKNOWN;
1216 1217
	dev_err(&card->gdev->dev, "The adapter hardware is of an "
		"unknown type\n");
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	return -ENOENT;
}

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

1227
	QETH_DBF_TEXT(TRACE, 3, "clearch");
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	card = CARD_FROM_CDEV(channel->ccwdev);
	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;

1251
	QETH_DBF_TEXT(TRACE, 3, "haltch");
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	card = CARD_FROM_CDEV(channel->ccwdev);
	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;

1272
	QETH_DBF_TEXT(TRACE, 3, "haltchs");
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	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;

1287
	QETH_DBF_TEXT(TRACE, 3, "clearchs");
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	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;

1302 1303
	QETH_DBF_TEXT(TRACE, 3, "clhacrd");
	QETH_DBF_HEX(TRACE, 3, &card, sizeof(void *));
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	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;

1316
	QETH_DBF_TEXT(TRACE, 3, "qdioclr");
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	switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
		QETH_QDIO_CLEANING)) {
	case QETH_QDIO_ESTABLISHED:
		if (card->info.type == QETH_CARD_TYPE_IQD)
			rc = qdio_cleanup(CARD_DDEV(card),
				QDIO_FLAG_CLEANUP_USING_HALT);
		else
			rc = qdio_cleanup(CARD_DDEV(card),
				QDIO_FLAG_CLEANUP_USING_CLEAR);
		if (rc)
1327
			QETH_DBF_TEXT_(TRACE, 3, "1err%d", rc);
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		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)
1337
		QETH_DBF_TEXT_(TRACE, 3, "2err%d", rc);
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	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;
}

static int qeth_get_unitaddr(struct qeth_card *card)
{
	int length;
	char *prcd;
	int rc;

1397
	QETH_DBF_TEXT(SETUP, 2, "getunit");
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	rc = qeth_read_conf_data(card, (void **) &prcd, &length);
	if (rc) {
1400 1401
		QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
			dev_name(&card->gdev->dev), rc);
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		return rc;
	}
	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']));
	kfree(prcd);
	return 0;
}

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)
{
	if (card->ipato.enabled) {
		if (card->info.type == QETH_CARD_TYPE_IQD)
				card->info.func_level =
					QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
		else
				card->info.func_level =
					QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT;
	} else {
		if (card->info.type == QETH_CARD_TYPE_IQD)
		/*FIXME:why do we have same values for  dis and ena for
		  osae??? */
			card->info.func_level =
				QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
		else
			card->info.func_level =
				QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT;
	}
}

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;

1452
	QETH_DBF_TEXT(SETUP, 2, "idxanswr");
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	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);
1462
	QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
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	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) {
1469
		QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1470
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
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		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;
1481
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
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		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;
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	struct ccw_dev_id temp_devid;
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	card = CARD_FROM_CDEV(channel->ccwdev);

1502
	QETH_DBF_TEXT(SETUP, 2, "idxactch");
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	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));
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	ccw_device_get_id(CARD_DDEV(card), &temp_devid);
	memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
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	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);
1532
	QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
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	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) {
1539 1540
		QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
			rc);
1541
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
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		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) {
1551 1552 1553 1554
		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));
1555
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
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		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;

1577
	QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
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	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))) {
		if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1587 1588 1589
			dev_err(&card->write.ccwdev->dev,
				"The adapter is used exclusively by another "
				"host\n");
F
Frank Blaschka 已提交
1590
		else
1591 1592 1593
			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
1594 1595 1596 1597
		goto out;
	}
	memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
	if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1598 1599 1600 1601
		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
1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614
		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;

1615
	QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
F
Frank Blaschka 已提交
1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626
	if (channel->state == CH_STATE_DOWN) {
		channel->state = CH_STATE_ACTIVATING;
		goto out;
	}

	card = CARD_FROM_CDEV(channel->ccwdev);
	if (qeth_check_idx_response(iob->data))
			goto out;

	if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
		if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
1627 1628 1629
			dev_err(&card->write.ccwdev->dev,
				"The adapter is used exclusively by another "
				"host\n");
F
Frank Blaschka 已提交
1630
		else
1631 1632 1633
			QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
				" negative reply\n",
				dev_name(&card->read.ccwdev->dev));
F
Frank Blaschka 已提交
1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646
		goto out;
	}

/**
 * temporary fix for microcode bug
 * to revert it,replace OR by AND
 */
	if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
	     (card->info.type == QETH_CARD_TYPE_OSAE))
		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)) {
1647 1648 1649 1650
		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
1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676
		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);
1677
	QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
F
Frank Blaschka 已提交
1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689
}
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;
1690
	unsigned long timeout, event_timeout;
1691
	struct qeth_ipa_cmd *cmd;
F
Frank Blaschka 已提交
1692

1693
	QETH_DBF_TEXT(TRACE, 2, "sendctl");
F
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1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708

	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);
1709
	QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
F
Frank Blaschka 已提交
1710 1711 1712 1713 1714

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

	if (IS_IPA(iob->data))
1715
		event_timeout = QETH_IPA_TIMEOUT;
F
Frank Blaschka 已提交
1716
	else
1717 1718
		event_timeout = QETH_TIMEOUT;
	timeout = jiffies + event_timeout;
F
Frank Blaschka 已提交
1719

1720
	QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
F
Frank Blaschka 已提交
1721 1722 1723 1724 1725
	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) {
1726 1727 1728
		QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
			"ccw_device_start rc = %i\n",
			dev_name(&card->write.ccwdev->dev), rc);
1729
		QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
F
Frank Blaschka 已提交
1730 1731 1732 1733 1734 1735 1736 1737 1738
		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;
	}
1739 1740 1741 1742 1743 1744 1745

	/* 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,
1746
		    atomic_read(&reply->received), event_timeout))
1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766
			goto time_err;
	} else {
		while (!atomic_read(&reply->received)) {
			if (time_after(jiffies, timeout))
				goto time_err;
			cpu_relax();
		};
	}

	rc = reply->rc;
	qeth_put_reply(reply);
	return rc;

time_err:
	spin_lock_irqsave(&reply->card->lock, flags);
	list_del_init(&reply->list);
	spin_unlock_irqrestore(&reply->card->lock, flags);
	reply->rc = -ETIME;
	atomic_inc(&reply->received);
	wake_up(&reply->wait_q);
F
Frank Blaschka 已提交
1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777
	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;

1778
	QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
F
Frank Blaschka 已提交
1779 1780 1781 1782 1783

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.cm_filter_r,
	       QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
1784
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
1785 1786 1787 1788 1789 1790 1791 1792
	return 0;
}

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

1793
	QETH_DBF_TEXT(SETUP, 2, "cmenable");
F
Frank Blaschka 已提交
1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812

	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;

1813
	QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
F
Frank Blaschka 已提交
1814 1815 1816 1817 1818

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.cm_connection_r,
	       QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
1819
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
1820 1821 1822 1823 1824 1825 1826 1827
	return 0;
}

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

1828
	QETH_DBF_TEXT(SETUP, 2, "cmsetup");
F
Frank Blaschka 已提交
1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928

	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;
	case QETH_CARD_TYPE_OSAE:
		switch (card->info.link_type) {
		case QETH_LINK_TYPE_HSTR:
		case QETH_LINK_TYPE_LANE_TR:
			return 2000;
		default:
			return 1492;
		}
	default:
		return 1500;
	}
}

static inline int qeth_get_max_mtu_for_card(int cardtype)
{
	switch (cardtype) {

	case QETH_CARD_TYPE_UNKNOWN:
	case QETH_CARD_TYPE_OSAE:
	case QETH_CARD_TYPE_OSN:
		return 61440;
	case QETH_CARD_TYPE_IQD:
		return 57344;
	default:
		return 1500;
	}
}

static inline int qeth_get_mtu_out_of_mpc(int cardtype)
{
	switch (cardtype) {
	case QETH_CARD_TYPE_IQD:
		return 1;
	default:
		return 0;
	}
}

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) {
	case QETH_CARD_TYPE_OSAE:
		return ((mtu >= 576) && (mtu <= 61440));
	case QETH_CARD_TYPE_IQD:
		return ((mtu >= 576) &&
			(mtu <= card->info.max_mtu + 4096 - 32));
	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;

1929
	QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
F
Frank Blaschka 已提交
1930 1931 1932 1933 1934 1935 1936 1937 1938 1939

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.ulp_filter_r,
	       QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
	if (qeth_get_mtu_out_of_mpc(card->info.type)) {
		memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
		mtu = qeth_get_mtu_outof_framesize(framesize);
		if (!mtu) {
			iob->rc = -EINVAL;
1940
			QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958
			return 0;
		}
		card->info.max_mtu = mtu;
		card->info.initial_mtu = mtu;
		card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
	} else {
		card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
		card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
		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;
1959
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
1960 1961 1962 1963 1964 1965 1966 1967 1968 1969
	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*/
1970
	QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
F
Frank Blaschka 已提交
1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002

	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;

2003
	QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
F
Frank Blaschka 已提交
2004 2005 2006 2007 2008

	iob = (struct qeth_cmd_buffer *) data;
	memcpy(&card->token.ulp_connection_r,
	       QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
	       QETH_MPC_TOKEN_LENGTH);
2009
	QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
F
Frank Blaschka 已提交
2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
	return 0;
}

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

2020
	QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
F
Frank Blaschka 已提交
2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044

	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;
}

static int qeth_alloc_qdio_buffers(struct qeth_card *card)
{
	int i, j;

2045
	QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
F
Frank Blaschka 已提交
2046 2047 2048 2049 2050 2051

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

	card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q),
2052
				  GFP_KERNEL);
F
Frank Blaschka 已提交
2053 2054
	if (!card->qdio.in_q)
		goto out_nomem;
2055 2056
	QETH_DBF_TEXT(SETUP, 2, "inq");
	QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
F
Frank Blaschka 已提交
2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072
	memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
	/* give inbound qeth_qdio_buffers their qdio_buffers */
	for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
		card->qdio.in_q->bufs[i].buffer =
			&card->qdio.in_q->qdio_bufs[i];
	/* inbound buffer pool */
	if (qeth_alloc_buffer_pool(card))
		goto out_freeinq;
	/* outbound */
	card->qdio.out_qs =
		kmalloc(card->qdio.no_out_queues *
			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) {
		card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
2073
					       GFP_KERNEL);
F
Frank Blaschka 已提交
2074 2075
		if (!card->qdio.out_qs[i])
			goto out_freeoutq;
2076 2077
		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
2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136
		memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
		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) {
			card->qdio.out_qs[i]->bufs[j].buffer =
				&card->qdio.out_qs[i]->qdio_bufs[j];
			skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
					    skb_list);
			lockdep_set_class(
				&card->qdio.out_qs[i]->bufs[j].skb_list.lock,
				&qdio_out_skb_queue_key);
			INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
		}
	}
	return 0;

out_freeoutq:
	while (i > 0)
		kfree(card->qdio.out_qs[--i]);
	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)
{
2137
	QETH_DBF_TEXT(SETUP, 3, "qdioact");
J
Jan Glauber 已提交
2138
	return qdio_activate(CARD_DDEV(card));
F
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}

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

2146
	QETH_DBF_TEXT(SETUP, 2, "dmact");
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2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162

	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;

2163
	QETH_DBF_TEXT(SETUP, 2, "mpcinit");
F
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2164 2165 2166

	rc = qeth_issue_next_read(card);
	if (rc) {
2167
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
2168 2169 2170 2171
		return rc;
	}
	rc = qeth_cm_enable(card);
	if (rc) {
2172
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
F
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2173 2174 2175 2176
		goto out_qdio;
	}
	rc = qeth_cm_setup(card);
	if (rc) {
2177
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
F
Frank Blaschka 已提交
2178 2179 2180 2181
		goto out_qdio;
	}
	rc = qeth_ulp_enable(card);
	if (rc) {
2182
		QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
F
Frank Blaschka 已提交
2183 2184 2185 2186
		goto out_qdio;
	}
	rc = qeth_ulp_setup(card);
	if (rc) {
2187
		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
F
Frank Blaschka 已提交
2188 2189 2190 2191
		goto out_qdio;
	}
	rc = qeth_alloc_qdio_buffers(card);
	if (rc) {
2192
		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
F
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2193 2194 2195 2196
		goto out_qdio;
	}
	rc = qeth_qdio_establish(card);
	if (rc) {
2197
		QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
F
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2198 2199 2200 2201 2202
		qeth_free_qdio_buffers(card);
		goto out_qdio;
	}
	rc = qeth_qdio_activate(card);
	if (rc) {
2203
		QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
F
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2204 2205 2206 2207
		goto out_qdio;
	}
	rc = qeth_dm_act(card);
	if (rc) {
2208
		QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
F
Frank Blaschka 已提交
2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227
		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;
2228
	dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
F
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2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241
	       "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])
2242
		dev_info(&card->gdev->dev, "Device is a%s "
F
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2243 2244 2245 2246 2247 2248 2249 2250
		       "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
2251
		dev_info(&card->gdev->dev, "Device is a%s "
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2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277
		       "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) {
	case QETH_CARD_TYPE_OSAE:
		/* 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:
2278 2279
		if ((card->info.guestlan) ||
		    (card->info.mcl_level[0] & 0x80)) {
F
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			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;

2305
	QETH_DBF_TEXT(TRACE, 5, "inwrklst");
F
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2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343

	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) {
2344
			page = alloc_page(GFP_ATOMIC);
F
Frank Blaschka 已提交
2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392
			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;

	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)
			buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
		else
			buf->buffer->element[i].flags = 0;
	}
	return 0;
}

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

2393
	QETH_DBF_TEXT(SETUP, 2, "initqdqs");
F
Frank Blaschka 已提交
2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404

	/* 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
2405
		     card->qdio.in_buf_pool.buf_count - 1);
F
Frank Blaschka 已提交
2406
	if (rc) {
2407
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 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 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491
		return rc;
	}
	/* 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],
					&card->qdio.out_qs[i]->bufs[j]);
		}
		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;

2492
	QETH_DBF_TEXT(TRACE, 4, "sendipa");
F
Frank Blaschka 已提交
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	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);
2502 2503
	rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
						iob, reply_cb, reply_param);
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2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);

static int qeth_send_startstoplan(struct qeth_card *card,
		enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
{
	int rc;
	struct qeth_cmd_buffer *iob;

	iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
	rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);

	return rc;
}

int qeth_send_startlan(struct qeth_card *card)
{
	int rc;

2524
	QETH_DBF_TEXT(SETUP, 2, "strtlan");
F
Frank Blaschka 已提交
2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539

	rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_startlan);

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

	/*
	 * TODO: according to the IPA format document page 14,
	 * TCP/IP (we!) never issue a STOPLAN
	 * is this right ?!?
	 */
2540
	QETH_DBF_TEXT(SETUP, 2, "stoplan");
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Frank Blaschka 已提交
2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551

	rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_stoplan);

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

2552
	QETH_DBF_TEXT(TRACE, 4, "defadpcb");
F
Frank Blaschka 已提交
2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566

	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;

2567
	QETH_DBF_TEXT(TRACE, 3, "quyadpcb");
F
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2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600

	cmd = (struct qeth_ipa_cmd *) data;
	if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f)
		card->info.link_type =
		      cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
	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;

2601
	QETH_DBF_TEXT(TRACE, 3, "queryadp");
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	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);

int qeth_check_qdio_errors(struct qdio_buffer *buf, unsigned int qdio_error,
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		const char *dbftext)
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{
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	if (qdio_error) {
2613 2614 2615
		QETH_DBF_TEXT(TRACE, 2, dbftext);
		QETH_DBF_TEXT(QERR, 2, dbftext);
		QETH_DBF_TEXT_(QERR, 2, " F15=%02X",
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			       buf->element[15].flags & 0xff);
2617
		QETH_DBF_TEXT_(QERR, 2, " F14=%02X",
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			       buf->element[14].flags & 0xff);
2619
		QETH_DBF_TEXT_(QERR, 2, " qerr=%X", qdio_error);
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		return 1;
	}
	return 0;
}
EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);

void qeth_queue_input_buffer(struct qeth_card *card, int index)
{
	struct qeth_qdio_q *queue = card->qdio.in_q;
	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);
		}

		/*
		 * according to old code it should be avoided to requeue all
		 * 128 buffers in order to benefit from PCI avoidance.
		 * this function keeps at least one buffer (the buffer at
		 * 'index') un-requeued -> this buffer is the first buffer that
		 * will be requeued the next time
		 */
		if (card->options.performance_stats) {
			card->perf_stats.inbound_do_qdio_cnt++;
			card->perf_stats.inbound_do_qdio_start_time =
				qeth_get_micros();
		}
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		rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
			     queue->next_buf_to_init, count);
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		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) {
2679 2680
			dev_warn(&card->gdev->dev,
				"QDIO reported an error, rc=%i\n", rc);
2681 2682
			QETH_DBF_TEXT(TRACE, 2, "qinberr");
			QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
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		}
		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,
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		struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
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{
	int sbalf15 = buffer->buffer->element[15].flags & 0xff;

2695
	QETH_DBF_TEXT(TRACE, 6, "hdsnderr");
2696 2697 2698 2699 2700 2701 2702
	if (card->info.type == QETH_CARD_TYPE_IQD) {
		if (sbalf15 == 0) {
			qdio_err = 0;
		} else {
			qdio_err = 1;
		}
	}
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	qeth_check_qdio_errors(buffer->buffer, qdio_err, "qouterr");
2704 2705

	if (!qdio_err)
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		return QETH_SEND_ERROR_NONE;
2707 2708 2709 2710 2711 2712 2713 2714 2715

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

	QETH_DBF_TEXT(TRACE, 1, "lnkfail");
	QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
	QETH_DBF_TEXT_(TRACE, 1, "%04x %02x",
		       (u16)qdio_err, (u8)sbalf15);
	return QETH_SEND_ERROR_LINK_FAILURE;
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}

/*
 * 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 */
2728
			QETH_DBF_TEXT(TRACE, 6, "np->pack");
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			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 */
2751
			QETH_DBF_TEXT(TRACE, 6, "pack->np");
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			if (queue->card->options.performance_stats)
				queue->card->perf_stats.sc_p_dp++;
			queue->do_pack = 0;
			/* flush packing buffers */
			buffer = &queue->bufs[queue->next_buf_to_fill];
			if ((atomic_read(&buffer->state) ==
						QETH_QDIO_BUF_EMPTY) &&
			    (buffer->next_element_to_fill > 0)) {
				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;
			}
		}
	}
	return flush_count;
}

/*
 * 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;

	buffer = &queue->bufs[queue->next_buf_to_fill];
	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;
}

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static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
			       int count)
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{
	struct qeth_qdio_out_buffer *buf;
	int rc;
	int i;
	unsigned int qdio_flags;

	for (i = index; i < index + count; ++i) {
		buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
		buf->buffer->element[buf->next_element_to_fill - 1].flags |=
				SBAL_FLAGS_LAST_ENTRY;

		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);
				buf->buffer->element[0].flags |= 0x40;
			}
		} 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);
				buf->buffer->element[0].flags |= 0x40;
			}
		}
	}

2835
	queue->sync_iqdio_error = 0;
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	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,
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		     queue->queue_no, index, count);
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	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;
2851 2852 2853 2854
	if (rc > 0) {
		if (!(rc & QDIO_ERROR_SIGA_BUSY))
			queue->sync_iqdio_error = rc & 3;
	}
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	if (rc) {
2856 2857 2858 2859
		queue->card->stats.tx_errors += count;
		/* ignore temporary SIGA errors without busy condition */
		if (rc == QDIO_ERROR_SIGA_TARGET)
			return;
2860 2861 2862
		QETH_DBF_TEXT(TRACE, 2, "flushbuf");
		QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
		QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_DDEV_ID(queue->card));
2863

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		/* this must not happen under normal circumstances. if it
		 * happens something is really wrong -> recover */
		qeth_schedule_recovery(queue->card);
		return;
	}
	atomic_add(count, &queue->used_buffers);
	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)
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				qeth_flush_buffers(queue, index, flush_cnt);
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			atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
		}
	}
}

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void qeth_qdio_output_handler(struct ccw_device *ccwdev,
		unsigned int qdio_error, int __queue, int first_element,
		int count, unsigned long card_ptr)
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{
	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;
2922
	unsigned qeth_send_err;
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2924
	QETH_DBF_TEXT(TRACE, 6, "qdouhdl");
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	if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
		QETH_DBF_TEXT(TRACE, 2, "achkcond");
		QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
		netif_stop_queue(card->dev);
		qeth_schedule_recovery(card);
		return;
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	}
	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) {
		buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
2939 2940 2941
		qeth_send_err = qeth_handle_send_error(card, buffer, qdio_error);
		__qeth_clear_output_buffer(queue, buffer,
			(qeth_send_err == QETH_SEND_ERROR_RETRY) ? 1 : 0);
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	}
	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)
{
	if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE))
		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)
{
	int elements_needed = 0;

	if (skb_shinfo(skb)->nr_frags > 0)
		elements_needed = (skb_shinfo(skb)->nr_frags + 1);
	if (elements_needed == 0)
3001 3002
		elements_needed = 1 + (((((unsigned long) skb->data) %
				PAGE_SIZE) + skb->len) >> PAGE_SHIFT);
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	if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3004
		QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
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			"(Number=%d / Length=%d). Discarded.\n",
			(elements_needed+elems), skb->len);
		return 0;
	}
	return elements_needed;
}
EXPORT_SYMBOL_GPL(qeth_get_elements_no);

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static inline void __qeth_fill_buffer(struct sk_buff *skb,
3014 3015
	struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
	int offset)
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{
3017
	int length = skb->len;
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	int length_here;
	int element;
	char *data;
	int first_lap ;

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

3027 3028
	if (offset >= 0) {
		data = skb->data + offset;
3029
		length -= offset;
3030 3031 3032
		first_lap = 0;
	}

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	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)
				buffer->element[element].flags = 0;
			else
				buffer->element[element].flags =
				    SBAL_FLAGS_LAST_FRAG;
		} else {
			if (first_lap)
				buffer->element[element].flags =
				    SBAL_FLAGS_FIRST_FRAG;
			else
				buffer->element[element].flags =
				    SBAL_FLAGS_MIDDLE_FRAG;
		}
		data += length_here;
		element++;
		first_lap = 0;
	}
	*next_element_to_fill = element;
}

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static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
3064 3065
		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
3066 3067 3068 3069 3070 3071 3072 3073 3074
{
	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 ....*/
3075
	if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
F
Frank Blaschka 已提交
3076 3077
		int element = buf->next_element_to_fill;

3078 3079
		hdr_len = sizeof(struct qeth_hdr_tso) +
			((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
F
Frank Blaschka 已提交
3080 3081 3082 3083 3084 3085 3086 3087 3088
		/*fill first buffer entry only with header information */
		buffer->element[element].addr = skb->data;
		buffer->element[element].length = hdr_len;
		buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
		buf->next_element_to_fill++;
		skb->data += hdr_len;
		skb->len  -= hdr_len;
		large_send = 1;
	}
3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099

	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;
		buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
		buf->is_header[element] = 1;
		buf->next_element_to_fill++;
	}

F
Frank Blaschka 已提交
3100 3101
	if (skb_shinfo(skb)->nr_frags == 0)
		__qeth_fill_buffer(skb, buffer, large_send,
3102
				(int *)&buf->next_element_to_fill, offset);
F
Frank Blaschka 已提交
3103 3104 3105 3106 3107
	else
		__qeth_fill_buffer_frag(skb, buffer, large_send,
					(int *)&buf->next_element_to_fill);

	if (!queue->do_pack) {
3108
		QETH_DBF_TEXT(TRACE, 6, "fillbfnp");
F
Frank Blaschka 已提交
3109 3110 3111 3112
		/* set state to PRIMED -> will be flushed */
		atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
		flush_cnt = 1;
	} else {
3113
		QETH_DBF_TEXT(TRACE, 6, "fillbfpa");
F
Frank Blaschka 已提交
3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131
		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
3132
		int offset, int hd_len)
F
Frank Blaschka 已提交
3133 3134
{
	struct qeth_qdio_out_buffer *buffer;
3135 3136
	struct sk_buff *skb1;
	struct qeth_skb_data *retry_ctrl;
F
Frank Blaschka 已提交
3137
	int index;
3138
	int rc;
F
Frank Blaschka 已提交
3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151

	/* 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;
	buffer = &queue->bufs[queue->next_buf_to_fill];
	/*
	 * 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
3152
	queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
F
Frank Blaschka 已提交
3153 3154
					  QDIO_MAX_BUFFERS_PER_Q;
	atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
F
Frank Blaschka 已提交
3155 3156
	qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
	qeth_flush_buffers(queue, index, 1);
3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175
	if (queue->sync_iqdio_error == 2) {
		skb1 = skb_dequeue(&buffer->skb_list);
		while (skb1) {
			atomic_dec(&skb1->users);
			skb1 = skb_dequeue(&buffer->skb_list);
		}
		retry_ctrl = (struct qeth_skb_data *) &skb->cb[16];
		if (retry_ctrl->magic != QETH_SKB_MAGIC) {
			retry_ctrl->magic = QETH_SKB_MAGIC;
			retry_ctrl->count = 0;
		}
		if (retry_ctrl->count < QETH_SIGA_CC2_RETRIES) {
			retry_ctrl->count++;
			rc = dev_queue_xmit(skb);
		} else {
			dev_kfree_skb_any(skb);
			QETH_DBF_TEXT(QERR, 2, "qrdrop");
		}
	}
F
Frank Blaschka 已提交
3176 3177 3178 3179 3180 3181 3182 3183 3184
	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
3185
		int elements_needed)
F
Frank Blaschka 已提交
3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210
{
	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;
	buffer = &queue->bufs[queue->next_buf_to_fill];
	/*
	 * 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
3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225
		/* 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;
			buffer = &queue->bufs[queue->next_buf_to_fill];
			/* 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
3226
							   flush_count);
F
Frank Blaschka 已提交
3227
				atomic_set(&queue->state,
F
Frank Blaschka 已提交
3228
						QETH_OUT_Q_UNLOCKED);
F
Frank Blaschka 已提交
3229
				return -EBUSY;
F
Frank Blaschka 已提交
3230 3231 3232
			}
		}
	}
F
Frank Blaschka 已提交
3233
	tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
F
Frank Blaschka 已提交
3234 3235 3236 3237
	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
3238
		qeth_flush_buffers(queue, start_index, flush_count);
F
Frank Blaschka 已提交
3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258
	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
3259
			qeth_flush_buffers(queue, start_index, flush_count);
F
Frank Blaschka 已提交
3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274
	}
	/* 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;

3275
	QETH_DBF_TEXT(TRACE, 4, "prmadpcb");
F
Frank Blaschka 已提交
3276 3277 3278 3279 3280 3281

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

	qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
	if (cmd->hdr.return_code) {
3282
		QETH_DBF_TEXT_(TRACE, 4, "prmrc%2.2x", cmd->hdr.return_code);
F
Frank Blaschka 已提交
3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295
		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;

3296
	QETH_DBF_TEXT(TRACE, 4, "setprom");
F
Frank Blaschka 已提交
3297 3298 3299 3300 3301 3302 3303 3304 3305

	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;
3306
	QETH_DBF_TEXT_(TRACE, 4, "mode:%x", mode);
F
Frank Blaschka 已提交
3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320

	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];

3321
	card = dev->ml_priv;
F
Frank Blaschka 已提交
3322

3323
	QETH_DBF_TEXT(TRACE, 4, "chgmtu");
F
Frank Blaschka 已提交
3324
	sprintf(dbf_text, "%8x", new_mtu);
3325
	QETH_DBF_TEXT(TRACE, 4, dbf_text);
F
Frank Blaschka 已提交
3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342

	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;

3343
	card = dev->ml_priv;
F
Frank Blaschka 已提交
3344

3345
	QETH_DBF_TEXT(TRACE, 5, "getstat");
F
Frank Blaschka 已提交
3346 3347 3348 3349 3350 3351 3352 3353 3354 3355

	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;

3356
	QETH_DBF_TEXT(TRACE, 4, "chgmaccb");
F
Frank Blaschka 已提交
3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375

	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;

3376
	QETH_DBF_TEXT(TRACE, 4, "chgmac");
F
Frank Blaschka 已提交
3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394

	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);

void qeth_tx_timeout(struct net_device *dev)
{
	struct qeth_card *card;

3395
	card = dev->ml_priv;
F
Frank Blaschka 已提交
3396 3397 3398 3399 3400 3401 3402
	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)
{
3403
	struct qeth_card *card = dev->ml_priv;
F
Frank Blaschka 已提交
3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 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
	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;

3474
	QETH_DBF_TEXT(TRACE, 4, "sendsnmp");
F
Frank Blaschka 已提交
3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498

	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;

3499
	QETH_DBF_TEXT(TRACE, 3, "snpcmdcb");
F
Frank Blaschka 已提交
3500 3501 3502 3503 3504 3505 3506

	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) {
3507
		QETH_DBF_TEXT_(TRACE, 4, "scer1%i", cmd->hdr.return_code);
F
Frank Blaschka 已提交
3508 3509 3510 3511 3512
		return 0;
	}
	if (cmd->data.setadapterparms.hdr.return_code) {
		cmd->hdr.return_code =
			cmd->data.setadapterparms.hdr.return_code;
3513
		QETH_DBF_TEXT_(TRACE, 4, "scer2%i", cmd->hdr.return_code);
F
Frank Blaschka 已提交
3514 3515 3516 3517 3518 3519 3520 3521 3522 3523
		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) {
3524
		QETH_DBF_TEXT_(TRACE, 4, "scer3%i", -ENOMEM);
F
Frank Blaschka 已提交
3525 3526 3527
		cmd->hdr.return_code = -ENOMEM;
		return 0;
	}
3528
	QETH_DBF_TEXT_(TRACE, 4, "snore%i",
F
Frank Blaschka 已提交
3529
		       cmd->data.setadapterparms.hdr.used_total);
3530
	QETH_DBF_TEXT_(TRACE, 4, "sseqn%i",
F
Frank Blaschka 已提交
3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543
		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 ... */
3544
		QETH_DBF_TEXT_(TRACE, 4, "srtot%i",
F
Frank Blaschka 已提交
3545
			       cmd->data.setadapterparms.hdr.used_total);
3546
		QETH_DBF_TEXT_(TRACE, 4, "srseq%i",
F
Frank Blaschka 已提交
3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562
			       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;

3563
	QETH_DBF_TEXT(TRACE, 3, "snmpcmd");
F
Frank Blaschka 已提交
3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576

	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;
	ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
	if (!ureq) {
3577
		QETH_DBF_TEXT(TRACE, 2, "snmpnome");
F
Frank Blaschka 已提交
3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599
		return -ENOMEM;
	}
	if (copy_from_user(ureq, udata,
			req_len + sizeof(struct qeth_snmp_ureq_hdr))) {
		kfree(ureq);
		return -EFAULT;
	}
	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)
3600
		QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
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
			   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);

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;
	}
}

static int qeth_qdio_establish(struct qeth_card *card)
{
	struct qdio_initialize init_data;
	char *qib_param_field;
	struct qdio_buffer **in_sbal_ptrs;
	struct qdio_buffer **out_sbal_ptrs;
	int i, j, k;
	int rc = 0;

3632
	QETH_DBF_TEXT(SETUP, 2, "qdioest");
F
Frank Blaschka 已提交
3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696

	qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
			      GFP_KERNEL);
	if (!qib_param_field)
		return -ENOMEM;

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

	in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
			       GFP_KERNEL);
	if (!in_sbal_ptrs) {
		kfree(qib_param_field);
		return -ENOMEM;
	}
	for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
		in_sbal_ptrs[i] = (struct qdio_buffer *)
			virt_to_phys(card->qdio.in_q->bufs[i].buffer);

	out_sbal_ptrs =
		kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
			sizeof(void *), GFP_KERNEL);
	if (!out_sbal_ptrs) {
		kfree(in_sbal_ptrs);
		kfree(qib_param_field);
		return -ENOMEM;
	}
	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(
				card->qdio.out_qs[i]->bufs[j].buffer);
		}

	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;
	init_data.no_input_qs            = 1;
	init_data.no_output_qs           = card->qdio.no_out_queues;
	init_data.input_handler          = card->discipline.input_handler;
	init_data.output_handler         = card->discipline.output_handler;
	init_data.int_parm               = (unsigned long) card;
	init_data.flags                  = QDIO_INBOUND_0COPY_SBALS |
					   QDIO_OUTBOUND_0COPY_SBALS |
					   QDIO_USE_OUTBOUND_PCIS;
	init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
	init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;

	if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
		QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
		rc = qdio_initialize(&init_data);
		if (rc)
			atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
	}
	kfree(out_sbal_ptrs);
	kfree(in_sbal_ptrs);
	kfree(qib_param_field);
	return rc;
}

static void qeth_core_free_card(struct qeth_card *card)
{

3697 3698
	QETH_DBF_TEXT(SETUP, 2, "freecrd");
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
F
Frank Blaschka 已提交
3699 3700 3701 3702 3703 3704
	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);
3705
	unregister_service_level(&card->qeth_service_level);
F
Frank Blaschka 已提交
3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726
	kfree(card);
}

static struct ccw_device_id qeth_ids[] = {
	{CCW_DEVICE(0x1731, 0x01), .driver_info = QETH_CARD_TYPE_OSAE},
	{CCW_DEVICE(0x1731, 0x05), .driver_info = QETH_CARD_TYPE_IQD},
	{CCW_DEVICE(0x1731, 0x06), .driver_info = QETH_CARD_TYPE_OSN},
	{},
};
MODULE_DEVICE_TABLE(ccw, qeth_ids);

static struct ccw_driver qeth_ccw_driver = {
	.name = "qeth",
	.ids = qeth_ids,
	.probe = ccwgroup_probe_ccwdev,
	.remove = ccwgroup_remove_ccwdev,
};

static int qeth_core_driver_group(const char *buf, struct device *root_dev,
				unsigned long driver_id)
{
3727 3728
	return ccwgroup_create_from_string(root_dev, driver_id,
					   &qeth_ccw_driver, 3, buf);
F
Frank Blaschka 已提交
3729 3730 3731 3732
}

int qeth_core_hardsetup_card(struct qeth_card *card)
{
3733
	struct qdio_ssqd_desc *ssqd;
F
Frank Blaschka 已提交
3734
	int retries = 3;
J
Jan Glauber 已提交
3735
	int mpno = 0;
F
Frank Blaschka 已提交
3736 3737
	int rc;

3738
	QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
F
Frank Blaschka 已提交
3739 3740 3741
	atomic_set(&card->force_alloc_skb, 0);
retry:
	if (retries < 3) {
3742 3743
		QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
			dev_name(&card->gdev->dev));
F
Frank Blaschka 已提交
3744 3745 3746 3747 3748 3749 3750 3751 3752
		ccw_device_set_offline(CARD_DDEV(card));
		ccw_device_set_offline(CARD_WDEV(card));
		ccw_device_set_offline(CARD_RDEV(card));
		ccw_device_set_online(CARD_RDEV(card));
		ccw_device_set_online(CARD_WDEV(card));
		ccw_device_set_online(CARD_DDEV(card));
	}
	rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
	if (rc == -ERESTARTSYS) {
3753
		QETH_DBF_TEXT(SETUP, 2, "break1");
F
Frank Blaschka 已提交
3754 3755
		return rc;
	} else if (rc) {
3756
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
F
Frank Blaschka 已提交
3757 3758 3759 3760 3761 3762 3763 3764
		if (--retries < 0)
			goto out;
		else
			goto retry;
	}

	rc = qeth_get_unitaddr(card);
	if (rc) {
3765
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
F
Frank Blaschka 已提交
3766 3767
		return rc;
	}
J
Jan Glauber 已提交
3768

3769 3770 3771 3772 3773 3774 3775 3776 3777 3778
	ssqd = kmalloc(sizeof(struct qdio_ssqd_desc), GFP_KERNEL);
	if (!ssqd) {
		rc = -ENOMEM;
		goto out;
	}
	rc = qdio_get_ssqd_desc(CARD_DDEV(card), ssqd);
	if (rc == 0)
		mpno = ssqd->pcnt;
	kfree(ssqd);

3779 3780
	if (mpno)
		mpno = min(mpno - 1, QETH_MAX_PORTNO);
F
Frank Blaschka 已提交
3781
	if (card->info.portno > mpno) {
3782 3783
		QETH_DBF_MESSAGE(2, "Device %s does not offer port number %d"
			"\n.", CARD_BUS_ID(card), card->info.portno);
F
Frank Blaschka 已提交
3784 3785 3786 3787 3788 3789 3790
		rc = -ENODEV;
		goto out;
	}
	qeth_init_tokens(card);
	qeth_init_func_level(card);
	rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
	if (rc == -ERESTARTSYS) {
3791
		QETH_DBF_TEXT(SETUP, 2, "break2");
F
Frank Blaschka 已提交
3792 3793
		return rc;
	} else if (rc) {
3794
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
F
Frank Blaschka 已提交
3795 3796 3797 3798 3799 3800 3801
		if (--retries < 0)
			goto out;
		else
			goto retry;
	}
	rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
	if (rc == -ERESTARTSYS) {
3802
		QETH_DBF_TEXT(SETUP, 2, "break3");
F
Frank Blaschka 已提交
3803 3804
		return rc;
	} else if (rc) {
3805
		QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
F
Frank Blaschka 已提交
3806 3807 3808 3809 3810 3811 3812
		if (--retries < 0)
			goto out;
		else
			goto retry;
	}
	rc = qeth_mpc_initialize(card);
	if (rc) {
3813
		QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
F
Frank Blaschka 已提交
3814 3815 3816 3817
		goto out;
	}
	return 0;
out:
3818 3819 3820 3821
	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
3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);

static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
		struct sk_buff **pskb, int offset, int *pfrag, int data_len)
{
	struct page *page = virt_to_page(element->addr);
	if (*pskb == NULL) {
		/* the upper protocol layers assume that there is data in the
		 * skb itself. Copy a small amount (64 bytes) to make them
		 * happy. */
		*pskb = dev_alloc_skb(64 + ETH_HLEN);
		if (!(*pskb))
			return -ENOMEM;
		skb_reserve(*pskb, ETH_HLEN);
		if (data_len <= 64) {
			memcpy(skb_put(*pskb, data_len), element->addr + offset,
				data_len);
		} else {
			get_page(page);
			memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
			skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
				data_len - 64);
			(*pskb)->data_len += data_len - 64;
			(*pskb)->len      += data_len - 64;
			(*pskb)->truesize += data_len - 64;
			(*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)++;
	}
	return 0;
}

struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
		struct qdio_buffer *buffer,
		struct qdio_buffer_element **__element, int *__offset,
		struct qeth_hdr **hdr)
{
	struct qdio_buffer_element *element = *__element;
	int offset = *__offset;
	struct sk_buff *skb = NULL;
	int skb_len;
	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);
	if (card->options.layer2) {
		if (card->info.type == QETH_CARD_TYPE_OSN) {
			skb_len = (*hdr)->hdr.osn.pdu_length;
			headroom = sizeof(struct qeth_hdr);
		} else {
			skb_len = (*hdr)->hdr.l2.pkt_length;
		}
	} else {
		skb_len = (*hdr)->hdr.l3.length;
3898 3899 3900 3901 3902
		if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
		    (card->info.link_type == QETH_LINK_TYPE_HSTR))
			headroom = TR_HLEN;
		else
			headroom = ETH_HLEN;
F
Frank Blaschka 已提交
3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935
	}

	if (!skb_len)
		return NULL;

	if ((skb_len >= card->options.rx_sg_cb) &&
	    (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
	    (!atomic_read(&card->force_alloc_skb))) {
		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) {
				if (qeth_create_skb_frag(element, &skb, offset,
				    &frag, data_len))
					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)) {
3936 3937
				QETH_DBF_TEXT(TRACE, 4, "unexeob");
				QETH_DBF_TEXT_(TRACE, 4, "%s",
F
Frank Blaschka 已提交
3938
					CARD_BUS_ID(card));
3939 3940
				QETH_DBF_TEXT(QERR, 2, "unexeob");
				QETH_DBF_TEXT_(QERR, 2, "%s",
F
Frank Blaschka 已提交
3941
					CARD_BUS_ID(card));
3942
				QETH_DBF_HEX(MISC, 4, buffer, sizeof(*buffer));
F
Frank Blaschka 已提交
3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962
				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()) {
3963 3964
		QETH_DBF_TEXT(TRACE, 2, "noskbmem");
		QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
F
Frank Blaschka 已提交
3965 3966 3967 3968 3969 3970 3971 3972
	}
	card->stats.rx_dropped++;
	return NULL;
}
EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);

static void qeth_unregister_dbf_views(void)
{
3973 3974 3975 3976 3977
	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
3978 3979
}

3980
void qeth_dbf_longtext(enum qeth_dbf_names dbf_nix, int level, char *fmt, ...)
P
Peter Tiedemann 已提交
3981 3982
{
	char dbf_txt_buf[32];
3983
	va_list args;
P
Peter Tiedemann 已提交
3984 3985 3986

	if (level > (qeth_dbf[dbf_nix].id)->level)
		return;
3987 3988 3989
	va_start(args, fmt);
	vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
	va_end(args);
P
Peter Tiedemann 已提交
3990 3991 3992 3993
	debug_text_event(qeth_dbf[dbf_nix].id, level, dbf_txt_buf);
}
EXPORT_SYMBOL_GPL(qeth_dbf_longtext);

F
Frank Blaschka 已提交
3994 3995
static int qeth_register_dbf_views(void)
{
3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008
	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
4009

4010 4011 4012 4013 4014 4015
		/* 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
4016

4017 4018 4019
		/* set a passing level */
		debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
	}
F
Frank Blaschka 已提交
4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040

	return 0;
}

int qeth_core_load_discipline(struct qeth_card *card,
		enum qeth_discipline_id discipline)
{
	int rc = 0;
	switch (discipline) {
	case QETH_DISCIPLINE_LAYER3:
		card->discipline.ccwgdriver = try_then_request_module(
			symbol_get(qeth_l3_ccwgroup_driver),
			"qeth_l3");
		break;
	case QETH_DISCIPLINE_LAYER2:
		card->discipline.ccwgdriver = try_then_request_module(
			symbol_get(qeth_l2_ccwgroup_driver),
			"qeth_l2");
		break;
	}
	if (!card->discipline.ccwgdriver) {
4041 4042
		dev_err(&card->gdev->dev, "There is no kernel module to "
			"support discipline %d\n", discipline);
F
Frank Blaschka 已提交
4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063
		rc = -EINVAL;
	}
	return rc;
}

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

static int qeth_core_probe_device(struct ccwgroup_device *gdev)
{
	struct qeth_card *card;
	struct device *dev;
	int rc;
	unsigned long flags;

4064
	QETH_DBF_TEXT(SETUP, 2, "probedev");
F
Frank Blaschka 已提交
4065 4066 4067 4068 4069

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

4070
	QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
F
Frank Blaschka 已提交
4071 4072 4073

	card = qeth_alloc_card();
	if (!card) {
4074
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
F
Frank Blaschka 已提交
4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088
		rc = -ENOMEM;
		goto err_dev;
	}
	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) {
4089
		QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
F
Frank Blaschka 已提交
4090 4091 4092 4093
		goto err_card;
	}
	rc = qeth_setup_card(card);
	if (rc) {
4094
		QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
F
Frank Blaschka 已提交
4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135
		goto err_card;
	}

	if (card->info.type == QETH_CARD_TYPE_OSN) {
		rc = qeth_core_create_osn_attributes(dev);
		if (rc)
			goto err_card;
		rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
		if (rc) {
			qeth_core_remove_osn_attributes(dev);
			goto err_card;
		}
		rc = card->discipline.ccwgdriver->probe(card->gdev);
		if (rc) {
			qeth_core_free_discipline(card);
			qeth_core_remove_osn_attributes(dev);
			goto err_card;
		}
	} else {
		rc = qeth_core_create_device_attributes(dev);
		if (rc)
			goto err_card;
	}

	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);
	return 0;

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);

4136
	QETH_DBF_TEXT(SETUP, 2, "removedv");
F
Frank Blaschka 已提交
4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192
	if (card->discipline.ccwgdriver) {
		card->discipline.ccwgdriver->remove(gdev);
		qeth_core_free_discipline(card);
	}

	if (card->info.type == QETH_CARD_TYPE_OSN) {
		qeth_core_remove_osn_attributes(&gdev->dev);
	} else {
		qeth_core_remove_device_attributes(&gdev->dev);
	}
	write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
	list_del(&card->list);
	write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
	qeth_core_free_card(card);
	dev_set_drvdata(&gdev->dev, NULL);
	put_device(&gdev->dev);
	return;
}

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

	if (!card->discipline.ccwgdriver) {
		if (card->info.type == QETH_CARD_TYPE_IQD)
			def_discipline = QETH_DISCIPLINE_LAYER3;
		else
			def_discipline = QETH_DISCIPLINE_LAYER2;
		rc = qeth_core_load_discipline(card, def_discipline);
		if (rc)
			goto err;
		rc = card->discipline.ccwgdriver->probe(card->gdev);
		if (rc)
			goto err;
	}
	rc = card->discipline.ccwgdriver->set_online(gdev);
err:
	return rc;
}

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

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

4193 4194 4195 4196 4197 4198 4199 4200 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
static int qeth_core_prepare(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
	if (card->discipline.ccwgdriver &&
	    card->discipline.ccwgdriver->prepare)
		return card->discipline.ccwgdriver->prepare(gdev);
	return 0;
}

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

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

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

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

F
Frank Blaschka 已提交
4237 4238 4239 4240 4241 4242 4243 4244 4245
static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
	.owner = THIS_MODULE,
	.name = "qeth",
	.driver_id = 0xD8C5E3C8,
	.probe = qeth_core_probe_device,
	.remove = qeth_core_remove_device,
	.set_online = qeth_core_set_online,
	.set_offline = qeth_core_set_offline,
	.shutdown = qeth_core_shutdown,
4246 4247 4248 4249 4250
	.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
4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303
};

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

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

static struct {
	const char str[ETH_GSTRING_LEN];
} qeth_ethtool_stats_keys[] = {
/*  0 */{"rx skbs"},
	{"rx buffers"},
	{"tx skbs"},
	{"tx buffers"},
	{"tx skbs no packing"},
	{"tx buffers no packing"},
	{"tx skbs packing"},
	{"tx buffers packing"},
	{"tx sg skbs"},
	{"tx sg frags"},
/* 10 */{"rx sg skbs"},
	{"rx sg frags"},
	{"rx sg page allocs"},
	{"tx large kbytes"},
	{"tx large count"},
	{"tx pk state ch n->p"},
	{"tx pk state ch p->n"},
	{"tx pk watermark low"},
	{"tx pk watermark high"},
	{"queue 0 buffer usage"},
/* 20 */{"queue 1 buffer usage"},
	{"queue 2 buffer usage"},
	{"queue 3 buffer usage"},
	{"rx handler time"},
	{"rx handler count"},
	{"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"},
4304
	{"tx csum"},
F
Frank Blaschka 已提交
4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315
};

int qeth_core_get_stats_count(struct net_device *dev)
{
	return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
}
EXPORT_SYMBOL_GPL(qeth_core_get_stats_count);

void qeth_core_get_ethtool_stats(struct net_device *dev,
		struct ethtool_stats *stats, u64 *data)
{
4316
	struct qeth_card *card = dev->ml_priv;
F
Frank Blaschka 已提交
4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355
	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;
4356
	data[33] = card->perf_stats.tx_csum;
F
Frank Blaschka 已提交
4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376
}
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)
{
4377
	struct qeth_card *card = dev->ml_priv;
F
Frank Blaschka 已提交
4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391
	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);

4392 4393 4394
int qeth_core_ethtool_get_settings(struct net_device *netdev,
					struct ethtool_cmd *ecmd)
{
4395
	struct qeth_card *card = netdev->ml_priv;
4396 4397 4398 4399 4400 4401 4402 4403 4404 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
	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
4482 4483 4484 4485
static int __init qeth_core_init(void)
{
	int rc;

4486
	pr_info("loading core functions\n");
F
Frank Blaschka 已提交
4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502
	INIT_LIST_HEAD(&qeth_core_card_list.list);
	rwlock_init(&qeth_core_card_list.rwlock);

	rc = qeth_register_dbf_views();
	if (rc)
		goto out_err;
	rc = ccw_driver_register(&qeth_ccw_driver);
	if (rc)
		goto ccw_err;
	rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
	if (rc)
		goto ccwgroup_err;
	rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
				&driver_attr_group);
	if (rc)
		goto driver_err;
M
Mark McLoughlin 已提交
4503
	qeth_core_root_dev = root_device_register("qeth");
F
Frank Blaschka 已提交
4504 4505 4506 4507
	rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
	if (rc)
		goto register_err;

4508 4509 4510 4511 4512 4513 4514 4515 4516
	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;
	}

	return 0;
slab_err:
M
Mark McLoughlin 已提交
4517
	root_device_unregister(qeth_core_root_dev);
F
Frank Blaschka 已提交
4518 4519 4520 4521 4522 4523 4524 4525
register_err:
	driver_remove_file(&qeth_core_ccwgroup_driver.driver,
			   &driver_attr_group);
driver_err:
	ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
ccwgroup_err:
	ccw_driver_unregister(&qeth_ccw_driver);
ccw_err:
4526
	QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
F
Frank Blaschka 已提交
4527 4528
	qeth_unregister_dbf_views();
out_err:
4529
	pr_err("Initializing the qeth device driver failed\n");
F
Frank Blaschka 已提交
4530 4531 4532 4533 4534
	return rc;
}

static void __exit qeth_core_exit(void)
{
M
Mark McLoughlin 已提交
4535
	root_device_unregister(qeth_core_root_dev);
F
Frank Blaschka 已提交
4536 4537 4538 4539
	driver_remove_file(&qeth_core_ccwgroup_driver.driver,
			   &driver_attr_group);
	ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
	ccw_driver_unregister(&qeth_ccw_driver);
4540
	kmem_cache_destroy(qeth_core_header_cache);
F
Frank Blaschka 已提交
4541
	qeth_unregister_dbf_views();
4542
	pr_info("core functions removed\n");
F
Frank Blaschka 已提交
4543 4544 4545 4546 4547 4548 4549
}

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");