- 根目录:
- drivers
- s390
- net
- qeth_core_main.c
C++程序
|
5620行
|
152.86 KB
#define KMSG_COMPONENT "qeth"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#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>
#include <linux/slab.h>
#include <net/iucv/af_iucv.h>
#include <asm/ebcdic.h>
#include <asm/io.h>
#include <asm/sysinfo.h>
#include <asm/compat.h>
#include "qeth_core.h"
struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
[QETH_DBF_SETUP] = {"qeth_setup",
8, 1, 8, 5, &debug_hex_ascii_view, NULL},
[QETH_DBF_MSG] = {"qeth_msg",
8, 1, 128, 3, &debug_sprintf_view, NULL},
[QETH_DBF_CTRL] = {"qeth_control",
8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
};
EXPORT_SYMBOL_GPL(qeth_dbf);
struct qeth_card_list_struct qeth_core_card_list;
EXPORT_SYMBOL_GPL(qeth_core_card_list);
struct kmem_cache *qeth_core_header_cache;
EXPORT_SYMBOL_GPL(qeth_core_header_cache);
static struct kmem_cache *qeth_qdio_outbuf_cache;
static struct device *qeth_core_root_dev;
static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY;
static struct lock_class_key qdio_out_skb_queue_key;
static struct mutex qeth_mod_mutex;
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 void qeth_free_qdio_buffers(struct qeth_card *);
static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
struct qeth_qdio_out_buffer *buf,
enum iucv_tx_notify notification);
static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
struct qeth_qdio_out_buffer *buf,
enum qeth_qdio_buffer_states newbufstate);
static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
static inline const char *qeth_get_cardname(struct qeth_card *card)
{
if (card->info.guestlan) {
switch (card->info.type) {
case QETH_CARD_TYPE_OSD:
return " Guest LAN QDIO";
case QETH_CARD_TYPE_IQD:
return " Guest LAN Hiper";
case QETH_CARD_TYPE_OSM:
return " Guest LAN QDIO - OSM";
case QETH_CARD_TYPE_OSX:
return " Guest LAN QDIO - OSX";
default:
return " unknown";
}
} else {
switch (card->info.type) {
case QETH_CARD_TYPE_OSD:
return " OSD Express";
case QETH_CARD_TYPE_IQD:
return " HiperSockets";
case QETH_CARD_TYPE_OSN:
return " OSN QDIO";
case QETH_CARD_TYPE_OSM:
return " OSM QDIO";
case QETH_CARD_TYPE_OSX:
return " OSX QDIO";
default:
return " unknown";
}
}
return " n/a";
}
const char *qeth_get_cardname_short(struct qeth_card *card)
{
if (card->info.guestlan) {
switch (card->info.type) {
case QETH_CARD_TYPE_OSD:
return "GuestLAN QDIO";
case QETH_CARD_TYPE_IQD:
return "GuestLAN Hiper";
case QETH_CARD_TYPE_OSM:
return "GuestLAN OSM";
case QETH_CARD_TYPE_OSX:
return "GuestLAN OSX";
default:
return "unknown";
}
} else {
switch (card->info.type) {
case QETH_CARD_TYPE_OSD:
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";
case QETH_CARD_TYPE_OSM:
return "OSM_1000";
case QETH_CARD_TYPE_OSX:
return "OSX_10GIG";
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;
QETH_CARD_TEXT(card, 5, "clwrklst");
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;
QETH_CARD_TEXT(card, 5, "alocpool");
for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
pool_entry = kzalloc(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) {
ptr = (void *) __get_free_page(GFP_KERNEL);
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)
{
QETH_CARD_TEXT(card, 2, "realcbp");
if ((card->state != CARD_STATE_DOWN) &&
(card->state != CARD_STATE_RECOVER))
return -EPERM;
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);
}
EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
static inline int qeth_cq_init(struct qeth_card *card)
{
int rc;
if (card->options.cq == QETH_CQ_ENABLED) {
QETH_DBF_TEXT(SETUP, 2, "cqinit");
memset(card->qdio.c_q->qdio_bufs, 0,
QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
card->qdio.c_q->next_buf_to_init = 127;
rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
card->qdio.no_in_queues - 1, 0,
127);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
goto out;
}
}
rc = 0;
out:
return rc;
}
static inline int qeth_alloc_cq(struct qeth_card *card)
{
int rc;
if (card->options.cq == QETH_CQ_ENABLED) {
int i;
struct qdio_outbuf_state *outbuf_states;
QETH_DBF_TEXT(SETUP, 2, "cqon");
card->qdio.c_q = kzalloc(sizeof(struct qeth_qdio_q),
GFP_KERNEL);
if (!card->qdio.c_q) {
rc = -1;
goto kmsg_out;
}
QETH_DBF_HEX(SETUP, 2, &card->qdio.c_q, sizeof(void *));
for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
card->qdio.c_q->bufs[i].buffer =
&card->qdio.c_q->qdio_bufs[i];
}
card->qdio.no_in_queues = 2;
card->qdio.out_bufstates = (struct qdio_outbuf_state *)
kzalloc(card->qdio.no_out_queues *
QDIO_MAX_BUFFERS_PER_Q *
sizeof(struct qdio_outbuf_state), GFP_KERNEL);
outbuf_states = card->qdio.out_bufstates;
if (outbuf_states == NULL) {
rc = -1;
goto free_cq_out;
}
for (i = 0; i < card->qdio.no_out_queues; ++i) {
card->qdio.out_qs[i]->bufstates = outbuf_states;
outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
}
} else {
QETH_DBF_TEXT(SETUP, 2, "nocq");
card->qdio.c_q = NULL;
card->qdio.no_in_queues = 1;
}
QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
rc = 0;
out:
return rc;
free_cq_out:
kfree(card->qdio.c_q);
card->qdio.c_q = NULL;
kmsg_out:
dev_err(&card->gdev->dev, "Failed to create completion queue\n");
goto out;
}
static inline void qeth_free_cq(struct qeth_card *card)
{
if (card->qdio.c_q) {
--card->qdio.no_in_queues;
kfree(card->qdio.c_q);
card->qdio.c_q = NULL;
}
kfree(card->qdio.out_bufstates);
card->qdio.out_bufstates = NULL;
}
static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
int delayed) {
enum iucv_tx_notify n;
switch (sbalf15) {
case 0:
n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
break;
case 4:
case 16:
case 17:
case 18:
n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
TX_NOTIFY_UNREACHABLE;
break;
default:
n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
TX_NOTIFY_GENERALERROR;
break;
}
return n;
}
static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q,
int bidx, int forced_cleanup)
{
if (q->card->options.cq != QETH_CQ_ENABLED)
return;
if (q->bufs[bidx]->next_pending != NULL) {
struct qeth_qdio_out_buffer *head = q->bufs[bidx];
struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
while (c) {
if (forced_cleanup ||
atomic_read(&c->state) ==
QETH_QDIO_BUF_HANDLED_DELAYED) {
struct qeth_qdio_out_buffer *f = c;
QETH_CARD_TEXT(f->q->card, 5, "fp");
QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
qeth_release_skbs(c);
c = f->next_pending;
BUG_ON(head->next_pending != f);
head->next_pending = c;
kmem_cache_free(qeth_qdio_outbuf_cache, f);
} else {
head = c;
c = c->next_pending;
}
}
}
if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
QETH_QDIO_BUF_HANDLED_DELAYED)) {
q->bufs[bidx]->aob = q->bufstates[bidx].aob;
qeth_init_qdio_out_buf(q, bidx);
QETH_CARD_TEXT(q->card, 2, "clprecov");
}
}
static inline void qeth_qdio_handle_aob(struct qeth_card *card,
unsigned long phys_aob_addr) {
struct qaob *aob;
struct qeth_qdio_out_buffer *buffer;
enum iucv_tx_notify notification;
aob = (struct qaob *) phys_to_virt(phys_aob_addr);
QETH_CARD_TEXT(card, 5, "haob");
QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
buffer = (struct qeth_qdio_out_buffer *) aob->user1;
QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
BUG_ON(buffer == NULL);
if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
notification = TX_NOTIFY_OK;
} else {
BUG_ON(atomic_read(&buffer->state) != QETH_QDIO_BUF_PENDING);
atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
notification = TX_NOTIFY_DELAYED_OK;
}
if (aob->aorc != 0) {
QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
notification = qeth_compute_cq_notification(aob->aorc, 1);
}
qeth_notify_skbs(buffer->q, buffer, notification);
buffer->aob = NULL;
qeth_clear_output_buffer(buffer->q, buffer,
QETH_QDIO_BUF_HANDLED_DELAYED);
qdio_release_aob(aob);
}
static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
{
return card->options.cq == QETH_CQ_ENABLED &&
card->qdio.c_q != NULL &&
queue != 0 &&
queue == card->qdio.no_in_queues - 1;
}
static int qeth_issue_next_read(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_CARD_TEXT(card, 5, "issnxrd");
if (card->read.state != CH_STATE_UP)
return -EIO;
iob = qeth_get_buffer(&card->read);
if (!iob) {
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));
return -ENOMEM;
}
qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
QETH_CARD_TEXT(card, 6, "noirqpnd");
rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
(addr_t) iob, 0, 0);
if (rc) {
QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
"rc=%i\n", dev_name(&card->gdev->dev), rc);
atomic_set(&card->read.irq_pending, 0);
card->read_or_write_problem = 1;
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);
}
static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
struct qeth_card *card)
{
char *ipa_name;
int com = cmd->hdr.command;
ipa_name = qeth_get_ipa_cmd_name(com);
if (rc)
QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
"x%X \"%s\"\n",
ipa_name, com, dev_name(&card->gdev->dev),
QETH_CARD_IFNAME(card), rc,
qeth_get_ipa_msg(rc));
else
QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
ipa_name, com, dev_name(&card->gdev->dev),
QETH_CARD_IFNAME(card));
}
static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
struct qeth_cmd_buffer *iob)
{
struct qeth_ipa_cmd *cmd = NULL;
QETH_CARD_TEXT(card, 5, "chkipad");
if (IS_IPA(iob->data)) {
cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
if (IS_IPA_REPLY(cmd)) {
if (cmd->hdr.command != IPA_CMD_SETCCID &&
cmd->hdr.command != IPA_CMD_DELCCID &&
cmd->hdr.command != IPA_CMD_MODCCID &&
cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
qeth_issue_ipa_msg(cmd,
cmd->hdr.return_code, card);
return cmd;
} else {
switch (cmd->hdr.command) {
case IPA_CMD_STOPLAN:
dev_warn(&card->gdev->dev,
"The link for interface %s on CHPID"
" 0x%X failed\n",
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:
dev_info(&card->gdev->dev,
"The link for %s on CHPID 0x%X has"
" been restored\n",
QETH_CARD_IFNAME(card),
card->info.chpid);
netif_carrier_on(card->dev);
card->lan_online = 1;
if (card->info.hwtrap)
card->info.hwtrap = 2;
qeth_schedule_recovery(card);
return NULL;
case IPA_CMD_MODCCID:
return cmd;
case IPA_CMD_REGISTER_LOCAL_ADDR:
QETH_CARD_TEXT(card, 3, "irla");
break;
case IPA_CMD_UNREGISTER_LOCAL_ADDR:
QETH_CARD_TEXT(card, 3, "urla");
break;
default:
QETH_DBF_MESSAGE(2, "Received data is IPA "
"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;
QETH_CARD_TEXT(card, 4, "clipalst");
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);
atomic_set(&card->write.irq_pending, 0);
}
EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
static int qeth_check_idx_response(struct qeth_card *card,
unsigned char *buffer)
{
if (!buffer)
return 0;
QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
if ((buffer[2] & 0xc0) == 0xc0) {
QETH_DBF_MESSAGE(2, "received an IDX TERMINATE "
"with cause code 0x%02x%s\n",
buffer[4],
((buffer[4] == 0x22) ?
" -- try another portname" : ""));
QETH_CARD_TEXT(card, 2, "ckidxres");
QETH_CARD_TEXT(card, 2, " idxterm");
QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
if (buffer[4] == 0xf6) {
dev_err(&card->gdev->dev,
"The qeth device is not configured "
"for the OSI layer required by z/VM\n");
return -EPERM;
}
return -EIO;
}
return 0;
}
static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
__u32 len)
{
struct qeth_card *card;
card = CARD_FROM_CDEV(channel->ccwdev);
QETH_CARD_TEXT(card, 4, "setupccw");
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;
QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
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;
QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
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);
wake_up(&channel->wait_q);
}
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;
int rc = 0;
card = CARD_FROM_CDEV(channel->ccwdev);
QETH_CARD_TEXT(card, 4, "sndctlcb");
rc = qeth_check_idx_response(card, iob->data);
switch (rc) {
case 0:
break;
case -EIO:
qeth_clear_ipacmd_list(card);
qeth_schedule_recovery(card);
default:
goto out;
}
cmd = qeth_check_ipa_data(card, iob);
if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
goto out;
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;
QETH_DBF_TEXT(SETUP, 2, "setupch");
for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
channel->iob[cnt].data =
kzalloc(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)
{
QETH_CARD_TEXT(card, 2, "startrec");
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;
struct qeth_card *card;
sense = (char *) irb->ecw;
cstat = irb->scsw.cmd.cstat;
dstat = irb->scsw.cmd.dstat;
card = CARD_FROM_CDEV(cdev);
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)) {
QETH_CARD_TEXT(card, 2, "CGENCHK");
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\n",
dev_name(&cdev->dev), dstat, cstat);
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) {
QETH_CARD_TEXT(card, 2, "REVIND");
return 1;
}
if (sense[SENSE_COMMAND_REJECT_BYTE] &
SENSE_COMMAND_REJECT_FLAG) {
QETH_CARD_TEXT(card, 2, "CMDREJi");
return 1;
}
if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
QETH_CARD_TEXT(card, 2, "AFFE");
return 1;
}
if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
QETH_CARD_TEXT(card, 2, "ZEROSEN");
return 0;
}
QETH_CARD_TEXT(card, 2, "DGENCHK");
return 1;
}
return 0;
}
static long __qeth_check_irb_error(struct ccw_device *cdev,
unsigned long intparm, struct irb *irb)
{
struct qeth_card *card;
card = CARD_FROM_CDEV(cdev);
if (!IS_ERR(irb))
return 0;
switch (PTR_ERR(irb)) {
case -EIO:
QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
dev_name(&cdev->dev));
QETH_CARD_TEXT(card, 2, "ckirberr");
QETH_CARD_TEXT_(card, 2, " rc%d", -EIO);
break;
case -ETIMEDOUT:
dev_warn(&cdev->dev, "A hardware operation timed out"
" on the device\n");
QETH_CARD_TEXT(card, 2, "ckirberr");
QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT);
if (intparm == QETH_RCD_PARM) {
if (card && (card->data.ccwdev == cdev)) {
card->data.state = CH_STATE_DOWN;
wake_up(&card->wait_q);
}
}
break;
default:
QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
dev_name(&cdev->dev), PTR_ERR(irb));
QETH_CARD_TEXT(card, 2, "ckirberr");
QETH_CARD_TEXT(card, 2, " rc???");
}
return PTR_ERR(irb);
}
static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
struct irb *irb)
{
int rc;
int cstat, dstat;
struct qeth_cmd_buffer *buffer;
struct qeth_channel *channel;
struct qeth_card *card;
struct qeth_cmd_buffer *iob;
__u8 index;
if (__qeth_check_irb_error(cdev, intparm, irb))
return;
cstat = irb->scsw.cmd.cstat;
dstat = irb->scsw.cmd.dstat;
card = CARD_FROM_CDEV(cdev);
if (!card)
return;
QETH_CARD_TEXT(card, 5, "irq");
if (card->read.ccwdev == cdev) {
channel = &card->read;
QETH_CARD_TEXT(card, 5, "read");
} else if (card->write.ccwdev == cdev) {
channel = &card->write;
QETH_CARD_TEXT(card, 5, "write");
} else {
channel = &card->data;
QETH_CARD_TEXT(card, 5, "data");
}
atomic_set(&channel->irq_pending, 0);
if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
channel->state = CH_STATE_STOPPED;
if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
channel->state = CH_STATE_HALTED;
if ((channel == &card->data) && (intparm != 0) &&
(intparm != QETH_RCD_PARM))
goto out;
if (intparm == QETH_CLEAR_CHANNEL_PARM) {
QETH_CARD_TEXT(card, 6, "clrchpar");
intparm = 0;
}
if (intparm == QETH_HALT_CHANNEL_PARM) {
QETH_CARD_TEXT(card, 6, "hltchpar");
intparm = 0;
}
if ((dstat & DEV_STAT_UNIT_EXCEP) ||
(dstat & DEV_STAT_UNIT_CHECK) ||
(cstat)) {
if (irb->esw.esw0.erw.cons) {
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);
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) {
qeth_clear_ipacmd_list(card);
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;
}
static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
struct qeth_qdio_out_buffer *buf,
enum iucv_tx_notify notification)
{
struct sk_buff *skb;
if (skb_queue_empty(&buf->skb_list))
goto out;
skb = skb_peek(&buf->skb_list);
while (skb) {
QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
if (skb->protocol == ETH_P_AF_IUCV) {
if (skb->sk) {
struct iucv_sock *iucv = iucv_sk(skb->sk);
iucv->sk_txnotify(skb, notification);
}
}
if (skb_queue_is_last(&buf->skb_list, skb))
skb = NULL;
else
skb = skb_queue_next(&buf->skb_list, skb);
}
out:
return;
}
static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
{
struct sk_buff *skb;
struct iucv_sock *iucv;
int notify_general_error = 0;
if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
notify_general_error = 1;
BUG_ON(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
skb = skb_dequeue(&buf->skb_list);
while (skb) {
QETH_CARD_TEXT(buf->q->card, 5, "skbr");
QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) {
if (skb->sk) {
iucv = iucv_sk(skb->sk);
iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
}
}
atomic_dec(&skb->users);
dev_kfree_skb_any(skb);
skb = skb_dequeue(&buf->skb_list);
}
}
static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
struct qeth_qdio_out_buffer *buf,
enum qeth_qdio_buffer_states newbufstate)
{
int i;
if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
atomic_dec(&queue->set_pci_flags_count);
if (newbufstate == QETH_QDIO_BUF_EMPTY) {
qeth_release_skbs(buf);
}
for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
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;
buf->buffer->element[i].length = 0;
buf->buffer->element[i].addr = NULL;
buf->buffer->element[i].eflags = 0;
buf->buffer->element[i].sflags = 0;
}
buf->buffer->element[15].eflags = 0;
buf->buffer->element[15].sflags = 0;
buf->next_element_to_fill = 0;
atomic_set(&buf->state, newbufstate);
}
static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
{
int j;
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
if (!q->bufs[j])
continue;
qeth_cleanup_handled_pending(q, j, 1);
qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
if (free) {
kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
q->bufs[j] = NULL;
}
}
}
void qeth_clear_qdio_buffers(struct qeth_card *card)
{
int i;
QETH_CARD_TEXT(card, 2, "clearqdbf");
for (i = 0; i < card->qdio.no_out_queues; ++i) {
if (card->qdio.out_qs[i]) {
qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
}
}
}
EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
static void qeth_free_buffer_pool(struct qeth_card *card)
{
struct qeth_buffer_pool_entry *pool_entry, *tmp;
int i = 0;
list_for_each_entry_safe(pool_entry, tmp,
&card->qdio.init_pool.entry_list, init_list){
for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
free_page((unsigned long)pool_entry->elements[i]);
list_del(&pool_entry->init_list);
kfree(pool_entry);
}
}
static void qeth_free_qdio_buffers(struct qeth_card *card)
{
int i, j;
if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
QETH_QDIO_UNINITIALIZED)
return;
qeth_free_cq(card);
cancel_delayed_work_sync(&card->buffer_reclaim_work);
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
kfree(card->qdio.in_q);
card->qdio.in_q = NULL;
qeth_free_buffer_pool(card);
if (card->qdio.out_qs) {
for (i = 0; i < card->qdio.no_out_queues; ++i) {
qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
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;
QETH_DBF_TEXT(SETUP, 2, "freech");
for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
kfree(channel->iob[cnt].data);
}
static void qeth_get_channel_path_desc(struct qeth_card *card)
{
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;
QETH_DBF_TEXT(SETUP, 2, "chp_desc");
ccwdev = card->data.ccwdev;
chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
if (chp_dsc != NULL) {
if (card->info.type != QETH_CARD_TYPE_IQD) {
if ((chp_dsc->chpp & 0x02) == 0x02) {
if ((atomic_read(&card->qdio.state) !=
QETH_QDIO_UNINITIALIZED) &&
(card->qdio.no_out_queues == 4))
qeth_free_qdio_buffers(card);
card->qdio.no_out_queues = 1;
if (card->qdio.default_out_queue != 0)
dev_info(&card->gdev->dev,
"Priority Queueing not supported\n");
card->qdio.default_out_queue = 0;
} else {
if ((atomic_read(&card->qdio.state) !=
QETH_QDIO_UNINITIALIZED) &&
(card->qdio.no_out_queues == 1)) {
qeth_free_qdio_buffers(card);
card->qdio.default_out_queue = 2;
}
card->qdio.no_out_queues = 4;
}
}
card->info.func_level = 0x4100 + chp_dsc->desc;
kfree(chp_dsc);
}
QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
return;
}
static void qeth_init_qdio_info(struct qeth_card *card)
{
QETH_DBF_TEXT(SETUP, 4, "intqdinf");
atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
if (card->info.type == QETH_CARD_TYPE_IQD)
card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
else
card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
}
static void qeth_set_intial_options(struct qeth_card *card)
{
card->options.route4.type = NO_ROUTER;
card->options.route6.type = NO_ROUTER;
card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
card->options.fake_broadcast = 0;
card->options.add_hhlen = DEFAULT_ADD_HHLEN;
card->options.performance_stats = 0;
card->options.rx_sg_cb = QETH_RX_SG_CB;
card->options.isolation = ISOLATION_MODE_NONE;
card->options.cq = QETH_CQ_DISABLED;
}
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);
QETH_CARD_TEXT_(card, 4, " %02x%02x%02x",
(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 task_struct *ts;
struct qeth_card *card = container_of(work, struct qeth_card,
kernel_thread_starter);
QETH_CARD_TEXT(card , 2, "strthrd");
if (card->read.state != CH_STATE_UP &&
card->write.state != CH_STATE_UP)
return;
if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
ts = kthread_run(card->discipline.recover, (void *)card,
"qeth_recover");
if (IS_ERR(ts)) {
qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
qeth_clear_thread_running_bit(card,
QETH_RECOVER_THREAD);
}
}
}
static int qeth_setup_card(struct qeth_card *card)
{
QETH_DBF_TEXT(SETUP, 2, "setupcrd");
QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
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->read_or_write_problem = 0;
card->dev = NULL;
spin_lock_init(&card->vlanlock);
spin_lock_init(&card->mclock);
spin_lock_init(&card->lock);
spin_lock_init(&card->ip_lock);
spin_lock_init(&card->thread_mask_lock);
mutex_init(&card->conf_mutex);
mutex_init(&card->discipline_mutex);
card->thread_start_mask = 0;
card->thread_allowed_mask = 0;
card->thread_running_mask = 0;
INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
INIT_LIST_HEAD(&card->ip_list);
INIT_LIST_HEAD(card->ip_tbd_list);
INIT_LIST_HEAD(&card->cmd_waiter_list);
init_waitqueue_head(&card->wait_q);
qeth_set_intial_options(card);
INIT_LIST_HEAD(&card->ipato.entries);
card->ipato.enabled = 0;
card->ipato.invert4 = 0;
card->ipato.invert6 = 0;
qeth_init_qdio_info(card);
INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
return 0;
}
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);
if (card->info.mcl_level[0])
seq_printf(m, "qeth: %s firmware level %s\n",
CARD_BUS_ID(card), card->info.mcl_level);
}
static struct qeth_card *qeth_alloc_card(void)
{
struct qeth_card *card;
QETH_DBF_TEXT(SETUP, 2, "alloccrd");
card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
if (!card)
goto out;
QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL);
if (!card->ip_tbd_list) {
QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
goto out_card;
}
if (qeth_setup_channel(&card->read))
goto out_ip;
if (qeth_setup_channel(&card->write))
goto out_channel;
card->options.layer2 = -1;
card->qeth_service_level.seq_print = qeth_core_sl_print;
register_service_level(&card->qeth_service_level);
return card;
out_channel:
qeth_clean_channel(&card->read);
out_ip:
kfree(card->ip_tbd_list);
out_card:
kfree(card);
out:
return NULL;
}
static int qeth_determine_card_type(struct qeth_card *card)
{
int i = 0;
QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
while (known_devices[i][QETH_DEV_MODEL_IND]) {
if ((CARD_RDEV(card)->id.dev_type ==
known_devices[i][QETH_DEV_TYPE_IND]) &&
(CARD_RDEV(card)->id.dev_model ==
known_devices[i][QETH_DEV_MODEL_IND])) {
card->info.type = known_devices[i][QETH_DEV_MODEL_IND];
card->qdio.no_out_queues =
known_devices[i][QETH_QUEUE_NO_IND];
card->qdio.no_in_queues = 1;
card->info.is_multicast_different =
known_devices[i][QETH_MULTICAST_IND];
qeth_get_channel_path_desc(card);
return 0;
}
i++;
}
card->info.type = QETH_CARD_TYPE_UNKNOWN;
dev_err(&card->gdev->dev, "The adapter hardware is of an "
"unknown type\n");
return -ENOENT;
}
static int qeth_clear_channel(struct qeth_channel *channel)
{
unsigned long flags;
struct qeth_card *card;
int rc;
card = CARD_FROM_CDEV(channel->ccwdev);
QETH_CARD_TEXT(card, 3, "clearch");
spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
if (rc)
return rc;
rc = wait_event_interruptible_timeout(card->wait_q,
channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
if (rc == -ERESTARTSYS)
return rc;
if (channel->state != CH_STATE_STOPPED)
return -ETIME;
channel->state = CH_STATE_DOWN;
return 0;
}
static int qeth_halt_channel(struct qeth_channel *channel)
{
unsigned long flags;
struct qeth_card *card;
int rc;
card = CARD_FROM_CDEV(channel->ccwdev);
QETH_CARD_TEXT(card, 3, "haltch");
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;
QETH_CARD_TEXT(card, 3, "haltchs");
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;
QETH_CARD_TEXT(card, 3, "clearchs");
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;
QETH_CARD_TEXT(card, 3, "clhacrd");
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;
QETH_CARD_TEXT(card, 3, "qdioclr");
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_shutdown(CARD_DDEV(card),
QDIO_FLAG_CLEANUP_USING_HALT);
else
rc = qdio_shutdown(CARD_DDEV(card),
QDIO_FLAG_CLEANUP_USING_CLEAR);
if (rc)
QETH_CARD_TEXT_(card, 3, "1err%d", rc);
qdio_free(CARD_DDEV(card));
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)
QETH_CARD_TEXT_(card, 3, "2err%d", rc);
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;
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 void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
{
QETH_DBF_TEXT(SETUP, 2, "cfgunit");
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']));
}
static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
{
QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
(prcd[76] == 0xF5 || prcd[76] == 0xF6)) {
card->info.blkt.time_total = 250;
card->info.blkt.inter_packet = 5;
card->info.blkt.inter_packet_jumbo = 15;
} else {
card->info.blkt.time_total = 0;
card->info.blkt.inter_packet = 0;
card->info.blkt.inter_packet_jumbo = 0;
}
}
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)
{
switch (card->info.type) {
case QETH_CARD_TYPE_IQD:
card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
break;
case QETH_CARD_TYPE_OSD:
case QETH_CARD_TYPE_OSN:
card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
break;
default:
break;
}
}
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;
QETH_DBF_TEXT(SETUP, 2, "idxanswr");
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);
QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
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) {
QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
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;
QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
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;
struct ccw_dev_id temp_devid;
card = CARD_FROM_CDEV(channel->ccwdev);
QETH_DBF_TEXT(SETUP, 2, "idxactch");
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));
ccw_device_get_id(CARD_DDEV(card), &temp_devid);
memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
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);
QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
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) {
QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
rc);
QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
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) {
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));
QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
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;
QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
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) == QETH_IDX_ACT_ERR_EXCL)
dev_err(&card->write.ccwdev->dev,
"The adapter is used exclusively by another "
"host\n");
else
QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
" negative reply\n",
dev_name(&card->write.ccwdev->dev));
goto out;
}
memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
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);
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;
QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
if (channel->state == CH_STATE_DOWN) {
channel->state = CH_STATE_ACTIVATING;
goto out;
}
card = CARD_FROM_CDEV(channel->ccwdev);
if (qeth_check_idx_response(card, iob->data))
goto out;
if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
case QETH_IDX_ACT_ERR_EXCL:
dev_err(&card->write.ccwdev->dev,
"The adapter is used exclusively by another "
"host\n");
break;
case QETH_IDX_ACT_ERR_AUTH:
case QETH_IDX_ACT_ERR_AUTH_USER:
dev_err(&card->read.ccwdev->dev,
"Setting the device online failed because of "
"insufficient authorization\n");
break;
default:
QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
" negative reply\n",
dev_name(&card->read.ccwdev->dev));
}
QETH_CARD_TEXT_(card, 2, "idxread%c",
QETH_IDX_ACT_CAUSE_CODE(iob->data));
goto out;
}
if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
(card->info.type == QETH_CARD_TYPE_OSD))
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)) {
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);
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);
QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
}
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;
unsigned long timeout, event_timeout;
struct qeth_ipa_cmd *cmd;
QETH_CARD_TEXT(card, 2, "sendctl");
if (card->read_or_write_problem) {
qeth_release_buffer(iob->channel, iob);
return -EIO;
}
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);
QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
qeth_prepare_control_data(card, len, iob);
if (IS_IPA(iob->data))
event_timeout = QETH_IPA_TIMEOUT;
else
event_timeout = QETH_TIMEOUT;
timeout = jiffies + event_timeout;
QETH_CARD_TEXT(card, 6, "noirqpnd");
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) {
QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
"ccw_device_start rc = %i\n",
dev_name(&card->write.ccwdev->dev), rc);
QETH_CARD_TEXT_(card, 2, " err%d", rc);
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;
}
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,
atomic_read(&reply->received), event_timeout))
goto time_err;
} else {
while (!atomic_read(&reply->received)) {
if (time_after(jiffies, timeout))
goto time_err;
cpu_relax();
};
}
if (reply->rc == -EIO)
goto error;
rc = reply->rc;
qeth_put_reply(reply);
return rc;
time_err:
reply->rc = -ETIME;
spin_lock_irqsave(&reply->card->lock, flags);
list_del_init(&reply->list);
spin_unlock_irqrestore(&reply->card->lock, flags);
atomic_inc(&reply->received);
error:
atomic_set(&card->write.irq_pending, 0);
qeth_release_buffer(iob->channel, iob);
card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO;
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;
QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
iob = (struct qeth_cmd_buffer *) data;
memcpy(&card->token.cm_filter_r,
QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
QETH_MPC_TOKEN_LENGTH);
QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
return 0;
}
static int qeth_cm_enable(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(SETUP, 2, "cmenable");
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;
QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
iob = (struct qeth_cmd_buffer *) data;
memcpy(&card->token.cm_connection_r,
QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
QETH_MPC_TOKEN_LENGTH);
QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
return 0;
}
static int qeth_cm_setup(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(SETUP, 2, "cmsetup");
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_OSD:
switch (card->info.link_type) {
case QETH_LINK_TYPE_HSTR:
case QETH_LINK_TYPE_LANE_TR:
return 2000;
default:
return 1492;
}
case QETH_CARD_TYPE_OSM:
case QETH_CARD_TYPE_OSX:
return 1492;
default:
return 1500;
}
}
static inline int qeth_get_mtu_outof_framesize(int framesize)
{
switch (framesize) {
case 0x4000:
return 8192;
case 0x6000:
return 16384;
case 0xa000:
return 32768;
case 0xffff:
return 57344;
default:
return 0;
}
}
static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
{
switch (card->info.type) {
case QETH_CARD_TYPE_OSD:
case QETH_CARD_TYPE_OSM:
case QETH_CARD_TYPE_OSX:
case QETH_CARD_TYPE_IQD:
return ((mtu >= 576) &&
(mtu <= card->info.max_mtu));
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;
QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
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 (card->info.type == QETH_CARD_TYPE_IQD) {
memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
mtu = qeth_get_mtu_outof_framesize(framesize);
if (!mtu) {
iob->rc = -EINVAL;
QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
return 0;
}
if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
if (card->dev &&
((card->dev->mtu == card->info.initial_mtu) ||
(card->dev->mtu > mtu)))
card->dev->mtu = mtu;
qeth_free_qdio_buffers(card);
}
card->info.initial_mtu = mtu;
card->info.max_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 = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
iob->data);
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;
QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
return 0;
}
static int qeth_ulp_enable(struct qeth_card *card)
{
int rc;
char prot_type;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
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;
int rc = 0;
QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
iob = (struct qeth_cmd_buffer *) data;
memcpy(&card->token.ulp_connection_r,
QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
QETH_MPC_TOKEN_LENGTH);
if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
3)) {
QETH_DBF_TEXT(SETUP, 2, "olmlimit");
dev_err(&card->gdev->dev, "A connection could not be "
"established because of an OLM limit\n");
iob->rc = -EMLINK;
}
QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
return rc;
}
static int qeth_ulp_setup(struct qeth_card *card)
{
int rc;
__u16 temp;
struct qeth_cmd_buffer *iob;
struct ccw_dev_id dev_id;
QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
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_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
{
int rc;
struct qeth_qdio_out_buffer *newbuf;
rc = 0;
newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
if (!newbuf) {
rc = -ENOMEM;
goto out;
}
newbuf->buffer = &q->qdio_bufs[bidx];
skb_queue_head_init(&newbuf->skb_list);
lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
newbuf->q = q;
newbuf->aob = NULL;
newbuf->next_pending = q->bufs[bidx];
atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
q->bufs[bidx] = newbuf;
if (q->bufstates) {
q->bufstates[bidx].user = newbuf;
QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
QETH_CARD_TEXT_(q->card, 2, "%lx",
(long) newbuf->next_pending);
}
out:
return rc;
}
static int qeth_alloc_qdio_buffers(struct qeth_card *card)
{
int i, j;
QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
return 0;
card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q),
GFP_KERNEL);
if (!card->qdio.in_q)
goto out_nomem;
QETH_DBF_TEXT(SETUP, 2, "inq");
QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *));
memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q));
for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
card->qdio.in_q->bufs[i].buffer =
&card->qdio.in_q->qdio_bufs[i];
card->qdio.in_q->bufs[i].rx_skb = NULL;
}
if (qeth_alloc_buffer_pool(card))
goto out_freeinq;
card->qdio.out_qs =
kzalloc(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] = kzalloc(sizeof(struct qeth_qdio_out_q),
GFP_KERNEL);
if (!card->qdio.out_qs[i])
goto out_freeoutq;
QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
card->qdio.out_qs[i]->queue_no = i;
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
BUG_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
goto out_freeoutqbufs;
}
}
if (qeth_alloc_cq(card))
goto out_freeoutq;
return 0;
out_freeoutqbufs:
while (j > 0) {
--j;
kmem_cache_free(qeth_qdio_outbuf_cache,
card->qdio.out_qs[i]->bufs[j]);
card->qdio.out_qs[i]->bufs[j] = NULL;
}
out_freeoutq:
while (i > 0) {
kfree(card->qdio.out_qs[--i]);
qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
}
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 *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card);
*((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card);
*((unsigned int *) (¶m_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 *) (¶m_field[20])) = card->info.blkt.time_total;
*((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet;
*((unsigned int *) (¶m_field[28])) =
card->info.blkt.inter_packet_jumbo;
}
static int qeth_qdio_activate(struct qeth_card *card)
{
QETH_DBF_TEXT(SETUP, 3, "qdioact");
return qdio_activate(CARD_DDEV(card));
}
static int qeth_dm_act(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(SETUP, 2, "dmact");
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;
QETH_DBF_TEXT(SETUP, 2, "mpcinit");
rc = qeth_issue_next_read(card);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
return rc;
}
rc = qeth_cm_enable(card);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
goto out_qdio;
}
rc = qeth_cm_setup(card);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
goto out_qdio;
}
rc = qeth_ulp_enable(card);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
goto out_qdio;
}
rc = qeth_ulp_setup(card);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
goto out_qdio;
}
rc = qeth_alloc_qdio_buffers(card);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
goto out_qdio;
}
rc = qeth_qdio_establish(card);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
qeth_free_qdio_buffers(card);
goto out_qdio;
}
rc = qeth_qdio_activate(card);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
goto out_qdio;
}
rc = qeth_dm_act(card);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
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;
dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n"
"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])
dev_info(&card->gdev->dev, "Device is a%s "
"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
dev_info(&card->gdev->dev, "Device is a%s "
"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_OSD:
case QETH_CARD_TYPE_OSM:
case QETH_CARD_TYPE_OSX:
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;
}
case QETH_CARD_TYPE_IQD:
if ((card->info.guestlan) ||
(card->info.mcl_level[0] & 0x80)) {
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;
QETH_CARD_TEXT(card, 5, "inwrklst");
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;
}
}
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) {
page = alloc_page(GFP_ATOMIC);
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;
if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
if (!buf->rx_skb)
return 1;
}
pool_entry = qeth_find_free_buffer_pool_entry(card);
if (!pool_entry)
return 1;
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].eflags = SBAL_EFLAGS_LAST_ENTRY;
else
buf->buffer->element[i].eflags = 0;
buf->buffer->element[i].sflags = 0;
}
return 0;
}
int qeth_init_qdio_queues(struct qeth_card *card)
{
int i, j;
int rc;
QETH_DBF_TEXT(SETUP, 2, "initqdqs");
memset(card->qdio.in_q->qdio_bufs, 0,
QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
qeth_initialize_working_pool_list(card);
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,
card->qdio.in_buf_pool.buf_count - 1);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
return rc;
}
rc = qeth_cq_init(card);
if (rc) {
return rc;
}
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],
QETH_QDIO_BUF_EMPTY);
}
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;
QETH_CARD_TEXT(card, 4, "sendipa");
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);
rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
iob, reply_cb, reply_param);
if (rc == -ETIME) {
qeth_clear_ipacmd_list(card);
qeth_schedule_recovery(card);
}
return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
int qeth_send_startlan(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(SETUP, 2, "strtlan");
iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_startlan);
int qeth_default_setadapterparms_cb(struct qeth_card *card,
struct qeth_reply *reply, unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_CARD_TEXT(card, 4, "defadpcb");
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;
QETH_CARD_TEXT(card, 3, "quyadpcb");
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;
QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_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;
QETH_CARD_TEXT(card, 3, "queryadp");
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);
static int qeth_query_ipassists_cb(struct qeth_card *card,
struct qeth_reply *reply, unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(SETUP, 2, "qipasscb");
cmd = (struct qeth_ipa_cmd *) data;
if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
} else {
card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
}
QETH_DBF_TEXT(SETUP, 2, "suppenbl");
QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_supported);
QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_enabled);
return 0;
}
int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
return rc;
}
EXPORT_SYMBOL_GPL(qeth_query_ipassists);
static int qeth_query_setdiagass_cb(struct qeth_card *card,
struct qeth_reply *reply, unsigned long data)
{
struct qeth_ipa_cmd *cmd;
__u16 rc;
cmd = (struct qeth_ipa_cmd *)data;
rc = cmd->hdr.return_code;
if (rc)
QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
else
card->info.diagass_support = cmd->data.diagass.ext;
return 0;
}
static int qeth_query_setdiagass(struct qeth_card *card)
{
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(SETUP, 2, "qdiagass");
iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
cmd->data.diagass.subcmd_len = 16;
cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
}
static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
{
unsigned long info = get_zeroed_page(GFP_KERNEL);
struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
struct ccw_dev_id ccwid;
int level, rc;
tid->chpid = card->info.chpid;
ccw_device_get_id(CARD_RDEV(card), &ccwid);
tid->ssid = ccwid.ssid;
tid->devno = ccwid.devno;
if (!info)
return;
rc = stsi(NULL, 0, 0, 0);
if (rc == -ENOSYS)
level = rc;
else
level = (((unsigned int) rc) >> 28);
if ((level >= 2) && (stsi(info222, 2, 2, 2) != -ENOSYS))
tid->lparnr = info222->lpar_number;
if ((level >= 3) && (stsi(info322, 3, 2, 2) != -ENOSYS)) {
EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
}
free_page(info);
return;
}
static int qeth_hw_trap_cb(struct qeth_card *card,
struct qeth_reply *reply, unsigned long data)
{
struct qeth_ipa_cmd *cmd;
__u16 rc;
cmd = (struct qeth_ipa_cmd *)data;
rc = cmd->hdr.return_code;
if (rc)
QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
return 0;
}
int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
{
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(SETUP, 2, "diagtrap");
iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
cmd->data.diagass.subcmd_len = 80;
cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
cmd->data.diagass.type = 1;
cmd->data.diagass.action = action;
switch (action) {
case QETH_DIAGS_TRAP_ARM:
cmd->data.diagass.options = 0x0003;
cmd->data.diagass.ext = 0x00010000 +
sizeof(struct qeth_trap_id);
qeth_get_trap_id(card,
(struct qeth_trap_id *)cmd->data.diagass.cdata);
break;
case QETH_DIAGS_TRAP_DISARM:
cmd->data.diagass.options = 0x0001;
break;
case QETH_DIAGS_TRAP_CAPTURE:
break;
}
return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
}
EXPORT_SYMBOL_GPL(qeth_hw_trap);
int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
unsigned int qdio_error, const char *dbftext)
{
if (qdio_error) {
QETH_CARD_TEXT(card, 2, dbftext);
QETH_CARD_TEXT_(card, 2, " F15=%02X",
buf->element[15].sflags);
QETH_CARD_TEXT_(card, 2, " F14=%02X",
buf->element[14].sflags);
QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
if ((buf->element[15].sflags) == 0x12) {
card->stats.rx_dropped++;
return 0;
} else
return 1;
}
return 0;
}
EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
void qeth_buffer_reclaim_work(struct work_struct *work)
{
struct qeth_card *card = container_of(work, struct qeth_card,
buffer_reclaim_work.work);
QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
qeth_queue_input_buffer(card, card->reclaim_index);
}
void qeth_queue_input_buffer(struct qeth_card *card, int index)
{
struct qeth_qdio_q *queue = card->qdio.in_q;
struct list_head *lh;
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);
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) {
atomic_set(&card->force_alloc_skb, 3);
count = newcount;
} else {
atomic_add_unless(&card->force_alloc_skb, -1, 0);
}
if (!count) {
i = 0;
list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
i++;
if (i == card->qdio.in_buf_pool.buf_count) {
QETH_CARD_TEXT(card, 2, "qsarbw");
card->reclaim_index = index;
schedule_delayed_work(
&card->buffer_reclaim_work,
QETH_RECLAIM_WORK_TIME);
}
return;
}
if (card->options.performance_stats) {
card->perf_stats.inbound_do_qdio_cnt++;
card->perf_stats.inbound_do_qdio_start_time =
qeth_get_micros();
}
rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
queue->next_buf_to_init, count);
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) {
QETH_CARD_TEXT(card, 2, "qinberr");
}
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,
struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
{
int sbalf15 = buffer->buffer->element[15].sflags;
QETH_CARD_TEXT(card, 6, "hdsnderr");
if (card->info.type == QETH_CARD_TYPE_IQD) {
if (sbalf15 == 0) {
qdio_err = 0;
} else {
qdio_err = 1;
}
}
qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
if (!qdio_err)
return QETH_SEND_ERROR_NONE;
if ((sbalf15 >= 15) && (sbalf15 <= 31))
return QETH_SEND_ERROR_RETRY;
QETH_CARD_TEXT(card, 1, "lnkfail");
QETH_CARD_TEXT_(card, 1, "%04x %02x",
(u16)qdio_err, (u8)sbalf15);
return QETH_SEND_ERROR_LINK_FAILURE;
}
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){
QETH_CARD_TEXT(queue->card, 6, "np->pack");
if (queue->card->options.performance_stats)
queue->card->perf_stats.sc_dp_p++;
queue->do_pack = 1;
}
}
}
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) {
QETH_CARD_TEXT(queue->card, 6, "pack->np");
if (queue->card->options.performance_stats)
queue->card->perf_stats.sc_p_dp++;
queue->do_pack = 0;
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;
}
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)) {
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;
}
static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
int count)
{
struct qeth_qdio_out_buffer *buf;
int rc;
int i;
unsigned int qdio_flags;
for (i = index; i < index + count; ++i) {
int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
buf = queue->bufs[bidx];
buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
SBAL_EFLAGS_LAST_ENTRY;
if (queue->bufstates)
queue->bufstates[bidx].user = buf;
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)) {
atomic_inc(&queue->set_pci_flags_count);
buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
}
} else {
if (!atomic_read(&queue->set_pci_flags_count)) {
atomic_inc(&queue->set_pci_flags_count);
buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
}
}
}
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,
queue->queue_no, index, count);
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;
atomic_add(count, &queue->used_buffers);
if (rc) {
queue->card->stats.tx_errors += count;
if (rc == QDIO_ERROR_SIGA_TARGET)
return;
QETH_CARD_TEXT(queue->card, 2, "flushbuf");
QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
qeth_schedule_recovery(queue->card);
return;
}
if (queue->card->options.performance_stats)
queue->card->perf_stats.bufs_sent += count;
}
static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
{
int index;
int flush_cnt = 0;
int q_was_packing = 0;
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) {
netif_stop_queue(queue->card->dev);
index = queue->next_buf_to_fill;
q_was_packing = queue->do_pack;
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)
qeth_flush_buffers(queue, index, flush_cnt);
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
}
}
}
void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
unsigned long card_ptr)
{
struct qeth_card *card = (struct qeth_card *)card_ptr;
if (card->dev && (card->dev->flags & IFF_UP))
napi_schedule(&card->napi);
}
EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
{
int rc;
if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
rc = -1;
goto out;
} else {
if (card->options.cq == cq) {
rc = 0;
goto out;
}
if (card->state != CARD_STATE_DOWN &&
card->state != CARD_STATE_RECOVER) {
rc = -1;
goto out;
}
qeth_free_qdio_buffers(card);
card->options.cq = cq;
rc = 0;
}
out:
return rc;
}
EXPORT_SYMBOL_GPL(qeth_configure_cq);
static void qeth_qdio_cq_handler(struct qeth_card *card,
unsigned int qdio_err,
unsigned int queue, int first_element, int count) {
struct qeth_qdio_q *cq = card->qdio.c_q;
int i;
int rc;
if (!qeth_is_cq(card, queue))
goto out;
QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
if (qdio_err) {
netif_stop_queue(card->dev);
qeth_schedule_recovery(card);
goto out;
}
if (card->options.performance_stats) {
card->perf_stats.cq_cnt++;
card->perf_stats.cq_start_time = qeth_get_micros();
}
for (i = first_element; i < first_element + count; ++i) {
int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
struct qdio_buffer *buffer = &cq->qdio_bufs[bidx];
int e;
e = 0;
while (buffer->element[e].addr) {
unsigned long phys_aob_addr;
phys_aob_addr = (unsigned long) buffer->element[e].addr;
qeth_qdio_handle_aob(card, phys_aob_addr);
buffer->element[e].addr = NULL;
buffer->element[e].eflags = 0;
buffer->element[e].sflags = 0;
buffer->element[e].length = 0;
++e;
}
buffer->element[15].eflags = 0;
buffer->element[15].sflags = 0;
}
rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
card->qdio.c_q->next_buf_to_init,
count);
if (rc) {
dev_warn(&card->gdev->dev,
"QDIO reported an error, rc=%i\n", rc);
QETH_CARD_TEXT(card, 2, "qcqherr");
}
card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
+ count) % QDIO_MAX_BUFFERS_PER_Q;
netif_wake_queue(card->dev);
if (card->options.performance_stats) {
int delta_t = qeth_get_micros();
delta_t -= card->perf_stats.cq_start_time;
card->perf_stats.cq_time += delta_t;
}
out:
return;
}
void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
unsigned int queue, int first_elem, int count,
unsigned long card_ptr)
{
struct qeth_card *card = (struct qeth_card *)card_ptr;
QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
if (qeth_is_cq(card, queue))
qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
else if (qdio_err)
qeth_schedule_recovery(card);
}
EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
void qeth_qdio_output_handler(struct ccw_device *ccwdev,
unsigned int qdio_error, int __queue, int first_element,
int count, unsigned long card_ptr)
{
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;
QETH_CARD_TEXT(card, 6, "qdouhdl");
if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
QETH_CARD_TEXT(card, 2, "achkcond");
netif_stop_queue(card->dev);
qeth_schedule_recovery(card);
return;
}
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) {
int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
buffer = queue->bufs[bidx];
qeth_handle_send_error(card, buffer, qdio_error);
if (queue->bufstates &&
(queue->bufstates[bidx].flags &
QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
BUG_ON(card->options.cq != QETH_CQ_ENABLED);
if (atomic_cmpxchg(&buffer->state,
QETH_QDIO_BUF_PRIMED,
QETH_QDIO_BUF_PENDING) ==
QETH_QDIO_BUF_PRIMED) {
qeth_notify_skbs(queue, buffer,
TX_NOTIFY_PENDING);
}
buffer->aob = queue->bufstates[bidx].aob;
QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
QETH_CARD_TEXT(queue->card, 5, "aob");
QETH_CARD_TEXT_(queue->card, 5, "%lx",
virt_to_phys(buffer->aob));
BUG_ON(bidx < 0 || bidx >= QDIO_MAX_BUFFERS_PER_Q);
if (qeth_init_qdio_out_buf(queue, bidx)) {
QETH_CARD_TEXT(card, 2, "outofbuf");
qeth_schedule_recovery(card);
}
} else {
if (card->options.cq == QETH_CQ_ENABLED) {
enum iucv_tx_notify n;
n = qeth_compute_cq_notification(
buffer->buffer->element[15].sflags, 0);
qeth_notify_skbs(queue, buffer, n);
}
qeth_clear_output_buffer(queue, buffer,
QETH_QDIO_BUF_EMPTY);
}
qeth_cleanup_handled_pending(queue, bidx, 0);
}
atomic_sub(count, &queue->used_buffers);
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_OSD ||
card->info.type == QETH_CARD_TYPE_OSX))
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)) {
}
return card->qdio.default_out_queue;
case 1:
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 dlen = skb->len - skb->data_len;
int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
PFN_DOWN((unsigned long)skb->data);
elements_needed += skb_shinfo(skb)->nr_frags;
if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
"(Number=%d / Length=%d). Discarded.\n",
(elements_needed+elems), skb->len);
return 0;
}
return elements_needed;
}
EXPORT_SYMBOL_GPL(qeth_get_elements_no);
int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len)
{
int hroom, inpage, rest;
if (((unsigned long)skb->data & PAGE_MASK) !=
(((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
hroom = skb_headroom(skb);
inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
rest = len - inpage;
if (rest > hroom)
return 1;
memmove(skb->data - rest, skb->data, skb->len - skb->data_len);
skb->data -= rest;
QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
}
return 0;
}
EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
static inline void __qeth_fill_buffer(struct sk_buff *skb,
struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill,
int offset)
{
int length = skb->len - skb->data_len;
int length_here;
int element;
char *data;
int first_lap, cnt;
struct skb_frag_struct *frag;
element = *next_element_to_fill;
data = skb->data;
first_lap = (is_tso == 0 ? 1 : 0);
if (offset >= 0) {
data = skb->data + offset;
length -= offset;
first_lap = 0;
}
while (length > 0) {
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)
if (skb_shinfo(skb)->nr_frags)
buffer->element[element].eflags =
SBAL_EFLAGS_FIRST_FRAG;
else
buffer->element[element].eflags = 0;
else
buffer->element[element].eflags =
SBAL_EFLAGS_MIDDLE_FRAG;
} else {
if (first_lap)
buffer->element[element].eflags =
SBAL_EFLAGS_FIRST_FRAG;
else
buffer->element[element].eflags =
SBAL_EFLAGS_MIDDLE_FRAG;
}
data += length_here;
element++;
first_lap = 0;
}
for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
frag = &skb_shinfo(skb)->frags[cnt];
buffer->element[element].addr = (char *)
page_to_phys(skb_frag_page(frag))
+ frag->page_offset;
buffer->element[element].length = frag->size;
buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
element++;
}
if (buffer->element[element - 1].eflags)
buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
*next_element_to_fill = element;
}
static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
struct qeth_qdio_out_buffer *buf, struct sk_buff *skb,
struct qeth_hdr *hdr, int offset, int hd_len)
{
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);
if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) {
int element = buf->next_element_to_fill;
hdr_len = sizeof(struct qeth_hdr_tso) +
((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len;
buffer->element[element].addr = skb->data;
buffer->element[element].length = hdr_len;
buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
buf->next_element_to_fill++;
skb->data += hdr_len;
skb->len -= hdr_len;
large_send = 1;
}
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].eflags = SBAL_EFLAGS_FIRST_FRAG;
buf->is_header[element] = 1;
buf->next_element_to_fill++;
}
__qeth_fill_buffer(skb, buffer, large_send,
(int *)&buf->next_element_to_fill, offset);
if (!queue->do_pack) {
QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
flush_cnt = 1;
} else {
QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
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)) {
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,
int offset, int hd_len)
{
struct qeth_qdio_out_buffer *buffer;
int index;
while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
index = queue->next_buf_to_fill;
buffer = queue->bufs[queue->next_buf_to_fill];
if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
goto out;
queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
QDIO_MAX_BUFFERS_PER_Q;
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
qeth_flush_buffers(queue, index, 1);
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,
int elements_needed)
{
struct qeth_qdio_out_buffer *buffer;
int start_index;
int flush_count = 0;
int do_pack = 0;
int tmp;
int rc = 0;
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];
if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
return -EBUSY;
}
qeth_switch_to_packing_if_needed(queue);
if (queue->do_pack) {
do_pack = 1;
if ((QETH_MAX_BUFFER_ELEMENTS(card) -
buffer->next_element_to_fill) < elements_needed) {
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];
if (atomic_read(&buffer->state) !=
QETH_QDIO_BUF_EMPTY) {
qeth_flush_buffers(queue, start_index,
flush_count);
atomic_set(&queue->state,
QETH_OUT_Q_UNLOCKED);
return -EBUSY;
}
}
}
tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0);
queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
QDIO_MAX_BUFFERS_PER_Q;
flush_count += tmp;
if (flush_count)
qeth_flush_buffers(queue, start_index, flush_count);
else if (!atomic_read(&queue->set_pci_flags_count))
atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
while (atomic_dec_return(&queue->state)) {
flush_count = 0;
start_index = queue->next_buf_to_fill;
flush_count += qeth_switch_to_nonpacking_if_needed(queue);
if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
flush_count += qeth_flush_buffers_on_no_pci(queue);
if (flush_count)
qeth_flush_buffers(queue, start_index, flush_count);
}
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;
QETH_CARD_TEXT(card, 4, "prmadpcb");
cmd = (struct qeth_ipa_cmd *) data;
setparms = &(cmd->data.setadapterparms);
qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd);
if (cmd->hdr.return_code) {
QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code);
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;
QETH_CARD_TEXT(card, 4, "setprom");
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;
QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
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];
card = dev->ml_priv;
QETH_CARD_TEXT(card, 4, "chgmtu");
sprintf(dbf_text, "%8x", new_mtu);
QETH_CARD_TEXT(card, 4, dbf_text);
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;
card = dev->ml_priv;
QETH_CARD_TEXT(card, 5, "getstat");
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;
QETH_CARD_TEXT(card, 4, "chgmaccb");
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;
QETH_CARD_TEXT(card, 4, "chgmac");
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);
static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
struct qeth_reply *reply, unsigned long data)
{
struct qeth_ipa_cmd *cmd;
struct qeth_set_access_ctrl *access_ctrl_req;
QETH_CARD_TEXT(card, 4, "setaccb");
cmd = (struct qeth_ipa_cmd *) data;
access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
QETH_DBF_TEXT_(SETUP, 2, "setaccb");
QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
cmd->data.setadapterparms.hdr.return_code);
switch (cmd->data.setadapterparms.hdr.return_code) {
case SET_ACCESS_CTRL_RC_SUCCESS:
case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
{
card->options.isolation = access_ctrl_req->subcmd_code;
if (card->options.isolation == ISOLATION_MODE_NONE) {
dev_info(&card->gdev->dev,
"QDIO data connection isolation is deactivated\n");
} else {
dev_info(&card->gdev->dev,
"QDIO data connection isolation is activated\n");
}
QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n",
card->gdev->dev.kobj.name,
access_ctrl_req->subcmd_code,
cmd->data.setadapterparms.hdr.return_code);
break;
}
case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
{
QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
card->gdev->dev.kobj.name,
access_ctrl_req->subcmd_code,
cmd->data.setadapterparms.hdr.return_code);
dev_err(&card->gdev->dev, "Adapter does not "
"support QDIO data connection isolation\n");
card->options.isolation = ISOLATION_MODE_NONE;
break;
}
case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
{
QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
card->gdev->dev.kobj.name,
access_ctrl_req->subcmd_code,
cmd->data.setadapterparms.hdr.return_code);
dev_err(&card->gdev->dev,
"Adapter is dedicated. "
"QDIO data connection isolation not supported\n");
card->options.isolation = ISOLATION_MODE_NONE;
break;
}
case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
{
QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n",
card->gdev->dev.kobj.name,
access_ctrl_req->subcmd_code,
cmd->data.setadapterparms.hdr.return_code);
dev_err(&card->gdev->dev,
"TSO does not permit QDIO data connection isolation\n");
card->options.isolation = ISOLATION_MODE_NONE;
break;
}
default:
{
QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d"
"==UNKNOWN\n",
card->gdev->dev.kobj.name,
access_ctrl_req->subcmd_code,
cmd->data.setadapterparms.hdr.return_code);
card->options.isolation = ISOLATION_MODE_NONE;
break;
}
}
qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd);
return 0;
}
static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
enum qeth_ipa_isolation_modes isolation)
{
int rc;
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
struct qeth_set_access_ctrl *access_ctrl_req;
QETH_CARD_TEXT(card, 4, "setacctl");
QETH_DBF_TEXT_(SETUP, 2, "setacctl");
QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
sizeof(struct qeth_ipacmd_setadpparms_hdr) +
sizeof(struct qeth_set_access_ctrl));
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
access_ctrl_req->subcmd_code = isolation;
rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
NULL);
QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
return rc;
}
int qeth_set_access_ctrl_online(struct qeth_card *card)
{
int rc = 0;
QETH_CARD_TEXT(card, 4, "setactlo");
if ((card->info.type == QETH_CARD_TYPE_OSD ||
card->info.type == QETH_CARD_TYPE_OSX) &&
qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
rc = qeth_setadpparms_set_access_ctrl(card,
card->options.isolation);
if (rc) {
QETH_DBF_MESSAGE(3,
"IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
card->gdev->dev.kobj.name,
rc);
}
} else if (card->options.isolation != ISOLATION_MODE_NONE) {
card->options.isolation = ISOLATION_MODE_NONE;
dev_err(&card->gdev->dev, "Adapter does not "
"support QDIO data connection isolation\n");
rc = -EOPNOTSUPP;
}
return rc;
}
EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
void qeth_tx_timeout(struct net_device *dev)
{
struct qeth_card *card;
card = dev->ml_priv;
QETH_CARD_TEXT(card, 4, "txtimeo");
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)
{
struct qeth_card *card = dev->ml_priv;
int rc = 0;
switch (regnum) {
case MII_BMCR:
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:
rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
BMSR_100BASE4;
break;
case MII_PHYSID1:
rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
dev->dev_addr[2];
rc = (rc >> 5) & 0xFFFF;
break;
case MII_PHYSID2:
rc = (dev->dev_addr[2] << 10) & 0xFFFF;
break;
case MII_ADVERTISE:
rc = ADVERTISE_ALL;
break;
case MII_LPA:
rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
LPA_100BASE4 | LPA_LPACK;
break;
case MII_EXPANSION:
break;
case MII_DCOUNTER:
break;
case MII_FCSCOUNTER:
break;
case MII_NWAYTEST:
break;
case MII_RERRCOUNTER:
rc = card->stats.rx_errors;
break;
case MII_SREVISION:
break;
case MII_RESV1:
break;
case MII_LBRERROR:
break;
case MII_PHYADDR:
break;
case MII_RESV2:
break;
case MII_TPISTATUS:
break;
case MII_NCONFIG:
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;
QETH_CARD_TEXT(card, 4, "sendsnmp");
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);
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;
QETH_CARD_TEXT(card, 3, "snpcmdcb");
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) {
QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code);
return 0;
}
if (cmd->data.setadapterparms.hdr.return_code) {
cmd->hdr.return_code =
cmd->data.setadapterparms.hdr.return_code;
QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code);
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);
if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
cmd->hdr.return_code = IPA_RC_ENOMEM;
return 0;
}
QETH_CARD_TEXT_(card, 4, "snore%i",
cmd->data.setadapterparms.hdr.used_total);
QETH_CARD_TEXT_(card, 4, "sseqn%i",
cmd->data.setadapterparms.hdr.seq_no);
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;
QETH_CARD_TEXT_(card, 4, "srtot%i",
cmd->data.setadapterparms.hdr.used_total);
QETH_CARD_TEXT_(card, 4, "srseq%i",
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;
QETH_CARD_TEXT(card, 3, "snmpcmd");
if (card->info.guestlan)
return -EOPNOTSUPP;
if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
(!card->options.layer2)) {
return -EOPNOTSUPP;
}
if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
return -EFAULT;
ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
if (IS_ERR(ureq)) {
QETH_CARD_TEXT(card, 2, "snmpnome");
return PTR_ERR(ureq);
}
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)
QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
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 int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
struct qeth_reply *reply, unsigned long data)
{
struct qeth_ipa_cmd *cmd;
struct qeth_qoat_priv *priv;
char *resdata;
int resdatalen;
QETH_CARD_TEXT(card, 3, "qoatcb");
cmd = (struct qeth_ipa_cmd *)data;
priv = (struct qeth_qoat_priv *)reply->param;
resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
resdata = (char *)data + 28;
if (resdatalen > (priv->buffer_len - priv->response_len)) {
cmd->hdr.return_code = IPA_RC_FFFF;
return 0;
}
memcpy((priv->buffer + priv->response_len), resdata,
resdatalen);
priv->response_len += resdatalen;
if (cmd->data.setadapterparms.hdr.seq_no <
cmd->data.setadapterparms.hdr.used_total)
return 1;
return 0;
}
int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
{
int rc = 0;
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
struct qeth_query_oat *oat_req;
struct qeth_query_oat_data oat_data;
struct qeth_qoat_priv priv;
void __user *tmp;
QETH_CARD_TEXT(card, 3, "qoatcmd");
if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
rc = -EOPNOTSUPP;
goto out;
}
if (copy_from_user(&oat_data, udata,
sizeof(struct qeth_query_oat_data))) {
rc = -EFAULT;
goto out;
}
priv.buffer_len = oat_data.buffer_len;
priv.response_len = 0;
priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL);
if (!priv.buffer) {
rc = -ENOMEM;
goto out;
}
iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
sizeof(struct qeth_ipacmd_setadpparms_hdr) +
sizeof(struct qeth_query_oat));
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
oat_req = &cmd->data.setadapterparms.data.query_oat;
oat_req->subcmd_code = oat_data.command;
rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
&priv);
if (!rc) {
if (is_compat_task())
tmp = compat_ptr(oat_data.ptr);
else
tmp = (void __user *)(unsigned long)oat_data.ptr;
if (copy_to_user(tmp, priv.buffer,
priv.response_len)) {
rc = -EFAULT;
goto out_free;
}
oat_data.response_len = priv.response_len;
if (copy_to_user(udata, &oat_data,
sizeof(struct qeth_query_oat_data)))
rc = -EFAULT;
} else
if (rc == IPA_RC_FFFF)
rc = -EFAULT;
out_free:
kfree(priv.buffer);
out:
return rc;
}
EXPORT_SYMBOL_GPL(qeth_query_oat_command);
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 void qeth_determine_capabilities(struct qeth_card *card)
{
int rc;
int length;
char *prcd;
struct ccw_device *ddev;
int ddev_offline = 0;
QETH_DBF_TEXT(SETUP, 2, "detcapab");
ddev = CARD_DDEV(card);
if (!ddev->online) {
ddev_offline = 1;
rc = ccw_device_set_online(ddev);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
goto out;
}
}
rc = qeth_read_conf_data(card, (void **) &prcd, &length);
if (rc) {
QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
dev_name(&card->gdev->dev), rc);
QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
goto out_offline;
}
qeth_configure_unitaddr(card, prcd);
if (ddev_offline)
qeth_configure_blkt_default(card, prcd);
kfree(prcd);
rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
if (rc)
QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1);
QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3);
QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
dev_info(&card->gdev->dev,
"Completion Queueing supported\n");
} else {
card->options.cq = QETH_CQ_NOTAVAILABLE;
}
out_offline:
if (ddev_offline == 1)
ccw_device_set_offline(ddev);
out:
return;
}
static inline void qeth_qdio_establish_cq(struct qeth_card *card,
struct qdio_buffer **in_sbal_ptrs,
void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) {
int i;
if (card->options.cq == QETH_CQ_ENABLED) {
int offset = QDIO_MAX_BUFFERS_PER_Q *
(card->qdio.no_in_queues - 1);
i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1);
for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
virt_to_phys(card->qdio.c_q->bufs[i].buffer);
}
queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
}
}
static int qeth_qdio_establish(struct qeth_card *card)
{
struct qdio_initialize init_data;
char *qib_param_field;
struct qdio_buffer **in_sbal_ptrs;
void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
struct qdio_buffer **out_sbal_ptrs;
int i, j, k;
int rc = 0;
QETH_DBF_TEXT(SETUP, 2, "qdioest");
qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
GFP_KERNEL);
if (!qib_param_field) {
rc = -ENOMEM;
goto out_free_nothing;
}
qeth_create_qib_param_field(card, qib_param_field);
qeth_create_qib_param_field_blkt(card, qib_param_field);
in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
GFP_KERNEL);
if (!in_sbal_ptrs) {
rc = -ENOMEM;
goto out_free_qib_param;
}
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);
}
queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
GFP_KERNEL);
if (!queue_start_poll) {
rc = -ENOMEM;
goto out_free_in_sbals;
}
for (i = 0; i < card->qdio.no_in_queues; ++i)
queue_start_poll[i] = card->discipline.start_poll;
qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
out_sbal_ptrs =
kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
sizeof(void *), GFP_KERNEL);
if (!out_sbal_ptrs) {
rc = -ENOMEM;
goto out_free_queue_start_poll;
}
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 = card->qdio.no_in_queues;
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.queue_start_poll_array = queue_start_poll;
init_data.int_parm = (unsigned long) card;
init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
init_data.output_sbal_state_array = card->qdio.out_bufstates;
init_data.scan_threshold =
(card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32;
if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
rc = qdio_allocate(&init_data);
if (rc) {
atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
goto out;
}
rc = qdio_establish(&init_data);
if (rc) {
atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
qdio_free(CARD_DDEV(card));
}
}
switch (card->options.cq) {
case QETH_CQ_ENABLED:
dev_info(&card->gdev->dev, "Completion Queue support enabled");
break;
case QETH_CQ_DISABLED:
dev_info(&card->gdev->dev, "Completion Queue support disabled");
break;
default:
break;
}
out:
kfree(out_sbal_ptrs);
out_free_queue_start_poll:
kfree(queue_start_poll);
out_free_in_sbals:
kfree(in_sbal_ptrs);
out_free_qib_param:
kfree(qib_param_field);
out_free_nothing:
return rc;
}
static void qeth_core_free_card(struct qeth_card *card)
{
QETH_DBF_TEXT(SETUP, 2, "freecrd");
QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
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);
unregister_service_level(&card->qeth_service_level);
kfree(card);
}
static struct ccw_device_id qeth_ids[] = {
{CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
.driver_info = QETH_CARD_TYPE_OSD},
{CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
.driver_info = QETH_CARD_TYPE_IQD},
{CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
.driver_info = QETH_CARD_TYPE_OSN},
{CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
.driver_info = QETH_CARD_TYPE_OSM},
{CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
.driver_info = QETH_CARD_TYPE_OSX},
{},
};
MODULE_DEVICE_TABLE(ccw, qeth_ids);
static struct ccw_driver qeth_ccw_driver = {
.driver = {
.owner = THIS_MODULE,
.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)
{
return ccwgroup_create_from_string(root_dev, driver_id,
&qeth_ccw_driver, 3, buf);
}
int qeth_core_hardsetup_card(struct qeth_card *card)
{
int retries = 0;
int rc;
QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
atomic_set(&card->force_alloc_skb, 0);
qeth_get_channel_path_desc(card);
retry:
if (retries)
QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
dev_name(&card->gdev->dev));
ccw_device_set_offline(CARD_DDEV(card));
ccw_device_set_offline(CARD_WDEV(card));
ccw_device_set_offline(CARD_RDEV(card));
rc = ccw_device_set_online(CARD_RDEV(card));
if (rc)
goto retriable;
rc = ccw_device_set_online(CARD_WDEV(card));
if (rc)
goto retriable;
rc = ccw_device_set_online(CARD_DDEV(card));
if (rc)
goto retriable;
rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
retriable:
if (rc == -ERESTARTSYS) {
QETH_DBF_TEXT(SETUP, 2, "break1");
return rc;
} else if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
if (++retries > 3)
goto out;
else
goto retry;
}
qeth_determine_capabilities(card);
qeth_init_tokens(card);
qeth_init_func_level(card);
rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
if (rc == -ERESTARTSYS) {
QETH_DBF_TEXT(SETUP, 2, "break2");
return rc;
} else if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
if (--retries < 0)
goto out;
else
goto retry;
}
rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
if (rc == -ERESTARTSYS) {
QETH_DBF_TEXT(SETUP, 2, "break3");
return rc;
} else if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
if (--retries < 0)
goto out;
else
goto retry;
}
card->read_or_write_problem = 0;
rc = qeth_mpc_initialize(card);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
goto out;
}
card->options.ipa4.supported_funcs = 0;
card->options.adp.supported_funcs = 0;
card->info.diagass_support = 0;
qeth_query_ipassists(card, QETH_PROT_IPV4);
if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
qeth_query_setadapterparms(card);
if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
qeth_query_setdiagass(card);
return 0;
out:
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);
return rc;
}
EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
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) {
if (qethbuffer->rx_skb) {
*pskb = qethbuffer->rx_skb;
qethbuffer->rx_skb = NULL;
} else {
*pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
if (!(*pskb))
return -ENOMEM;
}
skb_reserve(*pskb, ETH_HLEN);
if (data_len <= QETH_RX_PULL_LEN) {
memcpy(skb_put(*pskb, data_len), element->addr + offset,
data_len);
} else {
get_page(page);
memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
element->addr + offset, QETH_RX_PULL_LEN);
skb_fill_page_desc(*pskb, *pfrag, page,
offset + QETH_RX_PULL_LEN,
data_len - QETH_RX_PULL_LEN);
(*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
(*pskb)->len += data_len - QETH_RX_PULL_LEN;
(*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
(*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 qeth_qdio_buffer *qethbuffer,
struct qdio_buffer_element **__element, int *__offset,
struct qeth_hdr **hdr)
{
struct qdio_buffer_element *element = *__element;
struct qdio_buffer *buffer = qethbuffer->buffer;
int offset = *__offset;
struct sk_buff *skb = NULL;
int skb_len = 0;
void *data_ptr;
int data_len;
int headroom = 0;
int use_rx_sg = 0;
int frag = 0;
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);
switch ((*hdr)->hdr.l2.id) {
case QETH_HEADER_TYPE_LAYER2:
skb_len = (*hdr)->hdr.l2.pkt_length;
break;
case QETH_HEADER_TYPE_LAYER3:
skb_len = (*hdr)->hdr.l3.length;
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;
break;
case QETH_HEADER_TYPE_OSN:
skb_len = (*hdr)->hdr.osn.pdu_length;
headroom = sizeof(struct qeth_hdr);
break;
default:
break;
}
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))) ||
(card->options.cq == QETH_CQ_ENABLED)) {
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(qethbuffer, 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)) {
QETH_CARD_TEXT(card, 4, "unexeob");
QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
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()) {
QETH_CARD_TEXT(card, 2, "noskbmem");
}
card->stats.rx_dropped++;
return NULL;
}
EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
static void qeth_unregister_dbf_views(void)
{
int x;
for (x = 0; x < QETH_DBF_INFOS; x++) {
debug_unregister(qeth_dbf[x].id);
qeth_dbf[x].id = NULL;
}
}
void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
{
char dbf_txt_buf[32];
va_list args;
if (level > id->level)
return;
va_start(args, fmt);
vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
va_end(args);
debug_text_event(id, level, dbf_txt_buf);
}
EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
static int qeth_register_dbf_views(void)
{
int ret;
int x;
for (x = 0; x < QETH_DBF_INFOS; x++) {
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;
}
ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
if (ret) {
qeth_unregister_dbf_views();
return ret;
}
debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
}
return 0;
}
int qeth_core_load_discipline(struct qeth_card *card,
enum qeth_discipline_id discipline)
{
int rc = 0;
mutex_lock(&qeth_mod_mutex);
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) {
dev_err(&card->gdev->dev, "There is no kernel module to "
"support discipline %d\n", discipline);
rc = -EINVAL;
}
mutex_unlock(&qeth_mod_mutex);
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;
char dbf_name[20];
QETH_DBF_TEXT(SETUP, 2, "probedev");
dev = &gdev->dev;
if (!get_device(dev))
return -ENODEV;
QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
card = qeth_alloc_card();
if (!card) {
QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
rc = -ENOMEM;
goto err_dev;
}
snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
dev_name(&gdev->dev));
card->debug = debug_register(dbf_name, 2, 1, 8);
if (!card->debug) {
QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
rc = -ENOMEM;
goto err_card;
}
debug_register_view(card->debug, &debug_hex_ascii_view);
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) {
QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
goto err_dbf;
}
rc = qeth_setup_card(card);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
goto err_dbf;
}
if (card->info.type == QETH_CARD_TYPE_OSN)
rc = qeth_core_create_osn_attributes(dev);
else
rc = qeth_core_create_device_attributes(dev);
if (rc)
goto err_dbf;
switch (card->info.type) {
case QETH_CARD_TYPE_OSN:
case QETH_CARD_TYPE_OSM:
rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
if (rc)
goto err_attr;
rc = card->discipline.ccwgdriver->probe(card->gdev);
if (rc)
goto err_disc;
case QETH_CARD_TYPE_OSD:
case QETH_CARD_TYPE_OSX:
default:
break;
}
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);
qeth_determine_capabilities(card);
return 0;
err_disc:
qeth_core_free_discipline(card);
err_attr:
if (card->info.type == QETH_CARD_TYPE_OSN)
qeth_core_remove_osn_attributes(dev);
else
qeth_core_remove_device_attributes(dev);
err_dbf:
debug_unregister(card->debug);
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);
QETH_DBF_TEXT(SETUP, 2, "removedv");
if (card->info.type == QETH_CARD_TYPE_OSN) {
qeth_core_remove_osn_attributes(&gdev->dev);
} else {
qeth_core_remove_device_attributes(&gdev->dev);
}
if (card->discipline.ccwgdriver) {
card->discipline.ccwgdriver->remove(gdev);
qeth_core_free_discipline(card);
}
debug_unregister(card->debug);
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);
}
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;
}
static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
.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,
.prepare = qeth_core_prepare,
.complete = qeth_core_complete,
.freeze = qeth_core_freeze,
.thaw = qeth_core_thaw,
.restore = qeth_core_restore,
};
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[] = {
{"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"},
{"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"},
{"queue 1 buffer usage"},
{"queue 2 buffer usage"},
{"queue 3 buffer usage"},
{"rx poll time"},
{"rx poll count"},
{"rx do_QDIO time"},
{"rx do_QDIO count"},
{"tx handler time"},
{"tx handler count"},
{"tx time"},
{"tx count"},
{"tx do_QDIO time"},
{"tx do_QDIO count"},
{"tx csum"},
{"tx lin"},
{"cq handler count"},
{"cq handler time"}
};
int qeth_core_get_sset_count(struct net_device *dev, int stringset)
{
switch (stringset) {
case ETH_SS_STATS:
return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
default:
return -EINVAL;
}
}
EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
void qeth_core_get_ethtool_stats(struct net_device *dev,
struct ethtool_stats *stats, u64 *data)
{
struct qeth_card *card = dev->ml_priv;
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;
data[33] = card->perf_stats.tx_csum;
data[34] = card->perf_stats.tx_lin;
data[35] = card->perf_stats.cq_cnt;
data[36] = card->perf_stats.cq_time;
}
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)
{
struct qeth_card *card = dev->ml_priv;
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);
int qeth_core_ethtool_get_settings(struct net_device *netdev,
struct ethtool_cmd *ecmd)
{
struct qeth_card *card = netdev->ml_priv;
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);
static int __init qeth_core_init(void)
{
int rc;
pr_info("loading core functions\n");
INIT_LIST_HEAD(&qeth_core_card_list.list);
rwlock_init(&qeth_core_card_list.rwlock);
mutex_init(&qeth_mod_mutex);
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;
qeth_core_root_dev = root_device_register("qeth");
rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
if (rc)
goto register_err;
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;
}
qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
if (!qeth_qdio_outbuf_cache) {
rc = -ENOMEM;
goto cqslab_err;
}
return 0;
cqslab_err:
kmem_cache_destroy(qeth_core_header_cache);
slab_err:
root_device_unregister(qeth_core_root_dev);
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:
QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc);
qeth_unregister_dbf_views();
out_err:
pr_err("Initializing the qeth device driver failed\n");
return rc;
}
static void __exit qeth_core_exit(void)
{
root_device_unregister(qeth_core_root_dev);
driver_remove_file(&qeth_core_ccwgroup_driver.driver,
&driver_attr_group);
ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
ccw_driver_unregister(&qeth_ccw_driver);
kmem_cache_destroy(qeth_qdio_outbuf_cache);
kmem_cache_destroy(qeth_core_header_cache);
qeth_unregister_dbf_views();
pr_info("core functions removed\n");
}
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");
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