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aha/drivers/s390/net/qeth_core_main.c
Frank Blaschka b403e685b7 qeth: core code should alloc headroom for LLC protocol 
Allocate headroom for TR_HLEN but using only ETH_HLEN causes rx
performance degradation. Allocate ETH_HLEN for ethernet and
TR_HLEN for token ring (layer 3 mode).

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-16 20:41:41 -04:00

4492 lines
122 KiB
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/*
* drivers/s390/net/qeth_core_main.c
*
* Copyright IBM Corp. 2007
* Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
* Frank Pavlic <fpavlic@de.ibm.com>,
* Thomas Spatzier <tspat@de.ibm.com>,
* Frank Blaschka <frank.blaschka@de.ibm.com>
*/
#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/ipv6.h>
#include <linux/tcp.h>
#include <linux/mii.h>
#include <linux/kthread.h>
#include <asm-s390/ebcdic.h>
#include <asm-s390/io.h>
#include <asm/s390_rdev.h>
#include "qeth_core.h"
#include "qeth_core_offl.h"
static DEFINE_PER_CPU(char[256], qeth_core_dbf_txt_buf);
#define QETH_DBF_TXT_BUF qeth_core_dbf_txt_buf
struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
/* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
/* N P A M L V H */
[QETH_DBF_SETUP] = {"qeth_setup",
8, 1, 8, 5, &debug_hex_ascii_view, NULL},
[QETH_DBF_QERR] = {"qeth_qerr",
2, 1, 8, 2, &debug_hex_ascii_view, NULL},
[QETH_DBF_TRACE] = {"qeth_trace",
4, 1, 8, 3, &debug_hex_ascii_view, NULL},
[QETH_DBF_MSG] = {"qeth_msg",
8, 1, 128, 3, &debug_sprintf_view, NULL},
[QETH_DBF_SENSE] = {"qeth_sense",
2, 1, 64, 2, &debug_hex_ascii_view, NULL},
[QETH_DBF_MISC] = {"qeth_misc",
2, 1, 256, 2, &debug_hex_ascii_view, NULL},
[QETH_DBF_CTRL] = {"qeth_control",
8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
};
EXPORT_SYMBOL_GPL(qeth_dbf);
struct qeth_card_list_struct qeth_core_card_list;
EXPORT_SYMBOL_GPL(qeth_core_card_list);
static struct device *qeth_core_root_dev;
static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY;
static struct lock_class_key qdio_out_skb_queue_key;
static void qeth_send_control_data_cb(struct qeth_channel *,
struct qeth_cmd_buffer *);
static int qeth_issue_next_read(struct qeth_card *);
static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
static void qeth_free_buffer_pool(struct qeth_card *);
static int qeth_qdio_establish(struct qeth_card *);
static inline void __qeth_fill_buffer_frag(struct sk_buff *skb,
struct qdio_buffer *buffer, int is_tso,
int *next_element_to_fill)
{
struct skb_frag_struct *frag;
int fragno;
unsigned long addr;
int element, cnt, dlen;
fragno = skb_shinfo(skb)->nr_frags;
element = *next_element_to_fill;
dlen = 0;
if (is_tso)
buffer->element[element].flags =
SBAL_FLAGS_MIDDLE_FRAG;
else
buffer->element[element].flags =
SBAL_FLAGS_FIRST_FRAG;
dlen = skb->len - skb->data_len;
if (dlen) {
buffer->element[element].addr = skb->data;
buffer->element[element].length = dlen;
element++;
}
for (cnt = 0; cnt < fragno; cnt++) {
frag = &skb_shinfo(skb)->frags[cnt];
addr = (page_to_pfn(frag->page) << PAGE_SHIFT) +
frag->page_offset;
buffer->element[element].addr = (char *)addr;
buffer->element[element].length = frag->size;
if (cnt < (fragno - 1))
buffer->element[element].flags =
SBAL_FLAGS_MIDDLE_FRAG;
else
buffer->element[element].flags =
SBAL_FLAGS_LAST_FRAG;
element++;
}
*next_element_to_fill = element;
}
static inline const char *qeth_get_cardname(struct qeth_card *card)
{
if (card->info.guestlan) {
switch (card->info.type) {
case QETH_CARD_TYPE_OSAE:
return " Guest LAN QDIO";
case QETH_CARD_TYPE_IQD:
return " Guest LAN Hiper";
default:
return " unknown";
}
} else {
switch (card->info.type) {
case QETH_CARD_TYPE_OSAE:
return " OSD Express";
case QETH_CARD_TYPE_IQD:
return " HiperSockets";
case QETH_CARD_TYPE_OSN:
return " OSN QDIO";
default:
return " unknown";
}
}
return " n/a";
}
/* max length to be returned: 14 */
const char *qeth_get_cardname_short(struct qeth_card *card)
{
if (card->info.guestlan) {
switch (card->info.type) {
case QETH_CARD_TYPE_OSAE:
return "GuestLAN QDIO";
case QETH_CARD_TYPE_IQD:
return "GuestLAN Hiper";
default:
return "unknown";
}
} else {
switch (card->info.type) {
case QETH_CARD_TYPE_OSAE:
switch (card->info.link_type) {
case QETH_LINK_TYPE_FAST_ETH:
return "OSD_100";
case QETH_LINK_TYPE_HSTR:
return "HSTR";
case QETH_LINK_TYPE_GBIT_ETH:
return "OSD_1000";
case QETH_LINK_TYPE_10GBIT_ETH:
return "OSD_10GIG";
case QETH_LINK_TYPE_LANE_ETH100:
return "OSD_FE_LANE";
case QETH_LINK_TYPE_LANE_TR:
return "OSD_TR_LANE";
case QETH_LINK_TYPE_LANE_ETH1000:
return "OSD_GbE_LANE";
case QETH_LINK_TYPE_LANE:
return "OSD_ATM_LANE";
default:
return "OSD_Express";
}
case QETH_CARD_TYPE_IQD:
return "HiperSockets";
case QETH_CARD_TYPE_OSN:
return "OSN";
default:
return "unknown";
}
}
return "n/a";
}
void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
int clear_start_mask)
{
unsigned long flags;
spin_lock_irqsave(&card->thread_mask_lock, flags);
card->thread_allowed_mask = threads;
if (clear_start_mask)
card->thread_start_mask &= threads;
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
wake_up(&card->wait_q);
}
EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
int qeth_threads_running(struct qeth_card *card, unsigned long threads)
{
unsigned long flags;
int rc = 0;
spin_lock_irqsave(&card->thread_mask_lock, flags);
rc = (card->thread_running_mask & threads);
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
return rc;
}
EXPORT_SYMBOL_GPL(qeth_threads_running);
int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
{
return wait_event_interruptible(card->wait_q,
qeth_threads_running(card, threads) == 0);
}
EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
void qeth_clear_working_pool_list(struct qeth_card *card)
{
struct qeth_buffer_pool_entry *pool_entry, *tmp;
QETH_DBF_TEXT(TRACE, 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_DBF_TEXT(TRACE, 5, "alocpool");
for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL);
if (!pool_entry) {
qeth_free_buffer_pool(card);
return -ENOMEM;
}
for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
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_DBF_TEXT(TRACE, 2, "realcbp");
if ((card->state != CARD_STATE_DOWN) &&
(card->state != CARD_STATE_RECOVER))
return -EPERM;
/* TODO: steel/add buffers from/to a running card's buffer pool (?) */
qeth_clear_working_pool_list(card);
qeth_free_buffer_pool(card);
card->qdio.in_buf_pool.buf_count = bufcnt;
card->qdio.init_pool.buf_count = bufcnt;
return qeth_alloc_buffer_pool(card);
}
int qeth_set_large_send(struct qeth_card *card,
enum qeth_large_send_types type)
{
int rc = 0;
if (card->dev == NULL) {
card->options.large_send = type;
return 0;
}
if (card->state == CARD_STATE_UP)
netif_tx_disable(card->dev);
card->options.large_send = type;
switch (card->options.large_send) {
case QETH_LARGE_SEND_EDDP:
card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
NETIF_F_HW_CSUM;
break;
case QETH_LARGE_SEND_TSO:
if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
NETIF_F_HW_CSUM;
} else {
PRINT_WARN("TSO not supported on %s. "
"large_send set to 'no'.\n",
card->dev->name);
card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
NETIF_F_HW_CSUM);
card->options.large_send = QETH_LARGE_SEND_NO;
rc = -EOPNOTSUPP;
}
break;
default: /* includes QETH_LARGE_SEND_NO */
card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
NETIF_F_HW_CSUM);
break;
}
if (card->state == CARD_STATE_UP)
netif_wake_queue(card->dev);
return rc;
}
EXPORT_SYMBOL_GPL(qeth_set_large_send);
static int qeth_issue_next_read(struct qeth_card *card)
{
int rc;
struct qeth_cmd_buffer *iob;
QETH_DBF_TEXT(TRACE, 5, "issnxrd");
if (card->read.state != CH_STATE_UP)
return -EIO;
iob = qeth_get_buffer(&card->read);
if (!iob) {
PRINT_WARN("issue_next_read failed: no iob available!\n");
return -ENOMEM;
}
qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
QETH_DBF_TEXT(TRACE, 6, "noirqpnd");
rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
(addr_t) iob, 0, 0);
if (rc) {
PRINT_ERR("Error in starting next read ccw! rc=%i\n", rc);
atomic_set(&card->read.irq_pending, 0);
qeth_schedule_recovery(card);
wake_up(&card->wait_q);
}
return rc;
}
static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
{
struct qeth_reply *reply;
reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
if (reply) {
atomic_set(&reply->refcnt, 1);
atomic_set(&reply->received, 0);
reply->card = card;
};
return reply;
}
static void qeth_get_reply(struct qeth_reply *reply)
{
WARN_ON(atomic_read(&reply->refcnt) <= 0);
atomic_inc(&reply->refcnt);
}
static void qeth_put_reply(struct qeth_reply *reply)
{
WARN_ON(atomic_read(&reply->refcnt) <= 0);
if (atomic_dec_and_test(&reply->refcnt))
kfree(reply);
}
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 returned x%X \"%s\"\n",
ipa_name, com, QETH_CARD_IFNAME(card),
rc, qeth_get_ipa_msg(rc));
else
QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s succeeded\n",
ipa_name, com, QETH_CARD_IFNAME(card));
}
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_DBF_TEXT(TRACE, 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_MODCCID)
qeth_issue_ipa_msg(cmd,
cmd->hdr.return_code, card);
return cmd;
} else {
switch (cmd->hdr.command) {
case IPA_CMD_STOPLAN:
PRINT_WARN("Link failure on %s (CHPID 0x%X) - "
"there is a network problem or "
"someone pulled the cable or "
"disabled the port.\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:
PRINT_INFO("Link reestablished on %s "
"(CHPID 0x%X). Scheduling "
"IP address reset.\n",
QETH_CARD_IFNAME(card),
card->info.chpid);
netif_carrier_on(card->dev);
card->lan_online = 1;
qeth_schedule_recovery(card);
return NULL;
case IPA_CMD_MODCCID:
return cmd;
case IPA_CMD_REGISTER_LOCAL_ADDR:
QETH_DBF_TEXT(TRACE, 3, "irla");
break;
case IPA_CMD_UNREGISTER_LOCAL_ADDR:
QETH_DBF_TEXT(TRACE, 3, "urla");
break;
default:
PRINT_WARN("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_DBF_TEXT(TRACE, 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);
}
EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
static int qeth_check_idx_response(unsigned char *buffer)
{
if (!buffer)
return 0;
QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
if ((buffer[2] & 0xc0) == 0xc0) {
PRINT_WARN("received an IDX TERMINATE "
"with cause code 0x%02x%s\n",
buffer[4],
((buffer[4] == 0x22) ?
" -- try another portname" : ""));
QETH_DBF_TEXT(TRACE, 2, "ckidxres");
QETH_DBF_TEXT(TRACE, 2, " idxterm");
QETH_DBF_TEXT_(TRACE, 2, " rc%d", -EIO);
return -EIO;
}
return 0;
}
static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
__u32 len)
{
struct qeth_card *card;
QETH_DBF_TEXT(TRACE, 4, "setupccw");
card = CARD_FROM_CDEV(channel->ccwdev);
if (channel == &card->read)
memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
else
memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
channel->ccw.count = len;
channel->ccw.cda = (__u32) __pa(iob);
}
static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
{
__u8 index;
QETH_DBF_TEXT(TRACE, 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_DBF_TEXT(TRACE, 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);
}
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;
QETH_DBF_TEXT(TRACE, 4, "sndctlcb");
card = CARD_FROM_CDEV(channel->ccwdev);
if (qeth_check_idx_response(iob->data)) {
qeth_clear_ipacmd_list(card);
qeth_schedule_recovery(card);
goto out;
}
cmd = qeth_check_ipa_data(card, iob);
if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
goto out;
/*in case of OSN : check if cmd is set */
if (card->info.type == QETH_CARD_TYPE_OSN &&
cmd &&
cmd->hdr.command != IPA_CMD_STARTLAN &&
card->osn_info.assist_cb != NULL) {
card->osn_info.assist_cb(card->dev, cmd);
goto out;
}
spin_lock_irqsave(&card->lock, flags);
list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
((cmd) && (reply->seqno == cmd->hdr.seqno))) {
qeth_get_reply(reply);
list_del_init(&reply->list);
spin_unlock_irqrestore(&card->lock, flags);
keep_reply = 0;
if (reply->callback != NULL) {
if (cmd) {
reply->offset = (__u16)((char *)cmd -
(char *)iob->data);
keep_reply = reply->callback(card,
reply,
(unsigned long)cmd);
} else
keep_reply = reply->callback(card,
reply,
(unsigned long)iob);
}
if (cmd)
reply->rc = (u16) cmd->hdr.return_code;
else if (iob->rc)
reply->rc = iob->rc;
if (keep_reply) {
spin_lock_irqsave(&card->lock, flags);
list_add_tail(&reply->list,
&card->cmd_waiter_list);
spin_unlock_irqrestore(&card->lock, flags);
} else {
atomic_inc(&reply->received);
wake_up(&reply->wait_q);
}
qeth_put_reply(reply);
goto out;
}
}
spin_unlock_irqrestore(&card->lock, flags);
out:
memcpy(&card->seqno.pdu_hdr_ack,
QETH_PDU_HEADER_SEQ_NO(iob->data),
QETH_SEQ_NO_LENGTH);
qeth_release_buffer(channel, iob);
}
static int qeth_setup_channel(struct qeth_channel *channel)
{
int cnt;
QETH_DBF_TEXT(SETUP, 2, "setupch");
for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
channel->iob[cnt].data = (char *)
kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
if (channel->iob[cnt].data == NULL)
break;
channel->iob[cnt].state = BUF_STATE_FREE;
channel->iob[cnt].channel = channel;
channel->iob[cnt].callback = qeth_send_control_data_cb;
channel->iob[cnt].rc = 0;
}
if (cnt < QETH_CMD_BUFFER_NO) {
while (cnt-- > 0)
kfree(channel->iob[cnt].data);
return -ENOMEM;
}
channel->buf_no = 0;
channel->io_buf_no = 0;
atomic_set(&channel->irq_pending, 0);
spin_lock_init(&channel->iob_lock);
init_waitqueue_head(&channel->wait_q);
return 0;
}
static int qeth_set_thread_start_bit(struct qeth_card *card,
unsigned long thread)
{
unsigned long flags;
spin_lock_irqsave(&card->thread_mask_lock, flags);
if (!(card->thread_allowed_mask & thread) ||
(card->thread_start_mask & thread)) {
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
return -EPERM;
}
card->thread_start_mask |= thread;
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
return 0;
}
void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
{
unsigned long flags;
spin_lock_irqsave(&card->thread_mask_lock, flags);
card->thread_start_mask &= ~thread;
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
wake_up(&card->wait_q);
}
EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
{
unsigned long flags;
spin_lock_irqsave(&card->thread_mask_lock, flags);
card->thread_running_mask &= ~thread;
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
wake_up(&card->wait_q);
}
EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
{
unsigned long flags;
int rc = 0;
spin_lock_irqsave(&card->thread_mask_lock, flags);
if (card->thread_start_mask & thread) {
if ((card->thread_allowed_mask & thread) &&
!(card->thread_running_mask & thread)) {
rc = 1;
card->thread_start_mask &= ~thread;
card->thread_running_mask |= thread;
} else
rc = -EPERM;
}
spin_unlock_irqrestore(&card->thread_mask_lock, flags);
return rc;
}
int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
{
int rc = 0;
wait_event(card->wait_q,
(rc = __qeth_do_run_thread(card, thread)) >= 0);
return rc;
}
EXPORT_SYMBOL_GPL(qeth_do_run_thread);
void qeth_schedule_recovery(struct qeth_card *card)
{
QETH_DBF_TEXT(TRACE, 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;
sense = (char *) irb->ecw;
cstat = irb->scsw.cstat;
dstat = irb->scsw.dstat;
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_DBF_TEXT(TRACE, 2, "CGENCHK");
PRINT_WARN("check on device %s, dstat=x%x, cstat=x%x ",
cdev->dev.bus_id, 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_DBF_TEXT(TRACE, 2, "REVIND");
return 1;
}
if (sense[SENSE_COMMAND_REJECT_BYTE] &
SENSE_COMMAND_REJECT_FLAG) {
QETH_DBF_TEXT(TRACE, 2, "CMDREJi");
return 0;
}
if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
QETH_DBF_TEXT(TRACE, 2, "AFFE");
return 1;
}
if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
QETH_DBF_TEXT(TRACE, 2, "ZEROSEN");
return 0;
}
QETH_DBF_TEXT(TRACE, 2, "DGENCHK");
return 1;
}
return 0;
}
static long __qeth_check_irb_error(struct ccw_device *cdev,
unsigned long intparm, struct irb *irb)
{
if (!IS_ERR(irb))
return 0;
switch (PTR_ERR(irb)) {
case -EIO:
PRINT_WARN("i/o-error on device %s\n", cdev->dev.bus_id);
QETH_DBF_TEXT(TRACE, 2, "ckirberr");
QETH_DBF_TEXT_(TRACE, 2, " rc%d", -EIO);
break;
case -ETIMEDOUT:
PRINT_WARN("timeout on device %s\n", cdev->dev.bus_id);
QETH_DBF_TEXT(TRACE, 2, "ckirberr");
QETH_DBF_TEXT_(TRACE, 2, " rc%d", -ETIMEDOUT);
if (intparm == QETH_RCD_PARM) {
struct qeth_card *card = CARD_FROM_CDEV(cdev);
if (card && (card->data.ccwdev == cdev)) {
card->data.state = CH_STATE_DOWN;
wake_up(&card->wait_q);
}
}
break;
default:
PRINT_WARN("unknown error %ld on device %s\n", PTR_ERR(irb),
cdev->dev.bus_id);
QETH_DBF_TEXT(TRACE, 2, "ckirberr");
QETH_DBF_TEXT(TRACE, 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;
QETH_DBF_TEXT(TRACE, 5, "irq");
if (__qeth_check_irb_error(cdev, intparm, irb))
return;
cstat = irb->scsw.cstat;
dstat = irb->scsw.dstat;
card = CARD_FROM_CDEV(cdev);
if (!card)
return;
if (card->read.ccwdev == cdev) {
channel = &card->read;
QETH_DBF_TEXT(TRACE, 5, "read");
} else if (card->write.ccwdev == cdev) {
channel = &card->write;
QETH_DBF_TEXT(TRACE, 5, "write");
} else {
channel = &card->data;
QETH_DBF_TEXT(TRACE, 5, "data");
}
atomic_set(&channel->irq_pending, 0);
if (irb->scsw.fctl & (SCSW_FCTL_CLEAR_FUNC))
channel->state = CH_STATE_STOPPED;
if (irb->scsw.fctl & (SCSW_FCTL_HALT_FUNC))
channel->state = CH_STATE_HALTED;
/*let's wake up immediately on data channel*/
if ((channel == &card->data) && (intparm != 0) &&
(intparm != QETH_RCD_PARM))
goto out;
if (intparm == QETH_CLEAR_CHANNEL_PARM) {
QETH_DBF_TEXT(TRACE, 6, "clrchpar");
/* we don't have to handle this further */
intparm = 0;
}
if (intparm == QETH_HALT_CHANNEL_PARM) {
QETH_DBF_TEXT(TRACE, 6, "hltchpar");
/* we don't have to handle this further */
intparm = 0;
}
if ((dstat & DEV_STAT_UNIT_EXCEP) ||
(dstat & DEV_STAT_UNIT_CHECK) ||
(cstat)) {
if (irb->esw.esw0.erw.cons) {
/* TODO: we should make this s390dbf */
PRINT_WARN("sense data available on channel %s.\n",
CHANNEL_ID(channel));
PRINT_WARN(" cstat 0x%X\n dstat 0x%X\n", 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_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_clear_output_buffer(struct qeth_qdio_out_q *queue,
struct qeth_qdio_out_buffer *buf)
{
int i;
struct sk_buff *skb;
/* is PCI flag set on buffer? */
if (buf->buffer->element[0].flags & 0x40)
atomic_dec(&queue->set_pci_flags_count);
skb = skb_dequeue(&buf->skb_list);
while (skb) {
atomic_dec(&skb->users);
dev_kfree_skb_any(skb);
skb = skb_dequeue(&buf->skb_list);
}
qeth_eddp_buf_release_contexts(buf);
for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
buf->buffer->element[i].length = 0;
buf->buffer->element[i].addr = NULL;
buf->buffer->element[i].flags = 0;
}
buf->next_element_to_fill = 0;
atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
}
void qeth_clear_qdio_buffers(struct qeth_card *card)
{
int i, j;
QETH_DBF_TEXT(TRACE, 2, "clearqdbf");
/* clear outbound buffers to free skbs */
for (i = 0; i < card->qdio.no_out_queues; ++i)
if (card->qdio.out_qs[i]) {
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
qeth_clear_output_buffer(card->qdio.out_qs[i],
&card->qdio.out_qs[i]->bufs[j]);
}
}
EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
static void qeth_free_buffer_pool(struct qeth_card *card)
{
struct qeth_buffer_pool_entry *pool_entry, *tmp;
int i = 0;
QETH_DBF_TEXT(TRACE, 5, "freepool");
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;
QETH_DBF_TEXT(TRACE, 2, "freeqdbf");
if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
QETH_QDIO_UNINITIALIZED)
return;
kfree(card->qdio.in_q);
card->qdio.in_q = NULL;
/* inbound buffer pool */
qeth_free_buffer_pool(card);
/* free outbound qdio_qs */
if (card->qdio.out_qs) {
for (i = 0; i < card->qdio.no_out_queues; ++i) {
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j)
qeth_clear_output_buffer(card->qdio.out_qs[i],
&card->qdio.out_qs[i]->bufs[j]);
kfree(card->qdio.out_qs[i]);
}
kfree(card->qdio.out_qs);
card->qdio.out_qs = NULL;
}
}
static void qeth_clean_channel(struct qeth_channel *channel)
{
int cnt;
QETH_DBF_TEXT(SETUP, 2, "freech");
for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
kfree(channel->iob[cnt].data);
}
static int qeth_is_1920_device(struct qeth_card *card)
{
int single_queue = 0;
struct ccw_device *ccwdev;
struct channelPath_dsc {
u8 flags;
u8 lsn;
u8 desc;
u8 chpid;
u8 swla;
u8 zeroes;
u8 chla;
u8 chpp;
} *chp_dsc;
QETH_DBF_TEXT(SETUP, 2, "chk_1920");
ccwdev = card->data.ccwdev;
chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0);
if (chp_dsc != NULL) {
/* CHPP field bit 6 == 1 -> single queue */
single_queue = ((chp_dsc->chpp & 0x02) == 0x02);
kfree(chp_dsc);
}
QETH_DBF_TEXT_(SETUP, 2, "rc:%x", single_queue);
return single_queue;
}
static void qeth_init_qdio_info(struct qeth_card *card)
{
QETH_DBF_TEXT(SETUP, 4, "intqdinf");
atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
/* inbound */
card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
}
static void qeth_set_intial_options(struct qeth_card *card)
{
card->options.route4.type = NO_ROUTER;
card->options.route6.type = NO_ROUTER;
card->options.checksum_type = QETH_CHECKSUM_DEFAULT;
card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL;
card->options.fake_broadcast = 0;
card->options.add_hhlen = DEFAULT_ADD_HHLEN;
card->options.fake_ll = 0;
card->options.performance_stats = 0;
card->options.rx_sg_cb = QETH_RX_SG_CB;
}
static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
{
unsigned long flags;
int rc = 0;
spin_lock_irqsave(&card->thread_mask_lock, flags);
QETH_DBF_TEXT_(TRACE, 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 qeth_card *card = container_of(work, struct qeth_card,
kernel_thread_starter);
QETH_DBF_TEXT(TRACE , 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))
kthread_run(card->discipline.recover, (void *) card,
"qeth_recover");
}
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->use_hard_stop = 0;
card->dev = NULL;
spin_lock_init(&card->vlanlock);
spin_lock_init(&card->mclock);
card->vlangrp = NULL;
spin_lock_init(&card->lock);
spin_lock_init(&card->ip_lock);
spin_lock_init(&card->thread_mask_lock);
card->thread_start_mask = 0;
card->thread_allowed_mask = 0;
card->thread_running_mask = 0;
INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
INIT_LIST_HEAD(&card->ip_list);
card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL);
if (!card->ip_tbd_list) {
QETH_DBF_TEXT(SETUP, 0, "iptbdnom");
return -ENOMEM;
}
INIT_LIST_HEAD(card->ip_tbd_list);
INIT_LIST_HEAD(&card->cmd_waiter_list);
init_waitqueue_head(&card->wait_q);
/* intial options */
qeth_set_intial_options(card);
/* IP address takeover */
INIT_LIST_HEAD(&card->ipato.entries);
card->ipato.enabled = 0;
card->ipato.invert4 = 0;
card->ipato.invert6 = 0;
/* init QDIO stuff */
qeth_init_qdio_info(card);
return 0;
}
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)
return NULL;
QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
if (qeth_setup_channel(&card->read)) {
kfree(card);
return NULL;
}
if (qeth_setup_channel(&card->write)) {
qeth_clean_channel(&card->read);
kfree(card);
return NULL;
}
card->options.layer2 = -1;
return card;
}
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][4]) {
if ((CARD_RDEV(card)->id.dev_type == known_devices[i][2]) &&
(CARD_RDEV(card)->id.dev_model == known_devices[i][3])) {
card->info.type = known_devices[i][4];
card->qdio.no_out_queues = known_devices[i][8];
card->info.is_multicast_different = known_devices[i][9];
if (qeth_is_1920_device(card)) {
PRINT_INFO("Priority Queueing not able "
"due to hardware limitations!\n");
card->qdio.no_out_queues = 1;
card->qdio.default_out_queue = 0;
}
return 0;
}
i++;
}
card->info.type = QETH_CARD_TYPE_UNKNOWN;
PRINT_ERR("unknown card type on device %s\n", CARD_BUS_ID(card));
return -ENOENT;
}
static int qeth_clear_channel(struct qeth_channel *channel)
{
unsigned long flags;
struct qeth_card *card;
int rc;
QETH_DBF_TEXT(TRACE, 3, "clearch");
card = CARD_FROM_CDEV(channel->ccwdev);
spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
if (rc)
return rc;
rc = wait_event_interruptible_timeout(card->wait_q,
channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
if (rc == -ERESTARTSYS)
return rc;
if (channel->state != CH_STATE_STOPPED)
return -ETIME;
channel->state = CH_STATE_DOWN;
return 0;
}
static int qeth_halt_channel(struct qeth_channel *channel)
{
unsigned long flags;
struct qeth_card *card;
int rc;
QETH_DBF_TEXT(TRACE, 3, "haltch");
card = CARD_FROM_CDEV(channel->ccwdev);
spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
if (rc)
return rc;
rc = wait_event_interruptible_timeout(card->wait_q,
channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
if (rc == -ERESTARTSYS)
return rc;
if (channel->state != CH_STATE_HALTED)
return -ETIME;
return 0;
}
static int qeth_halt_channels(struct qeth_card *card)
{
int rc1 = 0, rc2 = 0, rc3 = 0;
QETH_DBF_TEXT(TRACE, 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_DBF_TEXT(TRACE, 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_DBF_TEXT(TRACE, 3, "clhacrd");
QETH_DBF_HEX(TRACE, 3, &card, sizeof(void *));
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_DBF_TEXT(TRACE, 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_cleanup(CARD_DDEV(card),
QDIO_FLAG_CLEANUP_USING_HALT);
else
rc = qdio_cleanup(CARD_DDEV(card),
QDIO_FLAG_CLEANUP_USING_CLEAR);
if (rc)
QETH_DBF_TEXT_(TRACE, 3, "1err%d", rc);
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_DBF_TEXT_(TRACE, 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;
/*
* scan for RCD command in extended SenseID data
*/
ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
if (!ciw || ciw->cmd == 0)
return -EOPNOTSUPP;
rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
if (!rcd_buf)
return -ENOMEM;
channel->ccw.cmd_code = ciw->cmd;
channel->ccw.cda = (__u32) __pa(rcd_buf);
channel->ccw.count = ciw->count;
channel->ccw.flags = CCW_FLAG_SLI;
channel->state = CH_STATE_RCD;
spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
QETH_RCD_PARM, LPM_ANYPATH, 0,
QETH_RCD_TIMEOUT);
spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
if (!ret)
wait_event(card->wait_q,
(channel->state == CH_STATE_RCD_DONE ||
channel->state == CH_STATE_DOWN));
if (channel->state == CH_STATE_DOWN)
ret = -EIO;
else
channel->state = CH_STATE_DOWN;
if (ret) {
kfree(rcd_buf);
*buffer = NULL;
*length = 0;
} else {
*length = ciw->count;
*buffer = rcd_buf;
}
return ret;
}
static int qeth_get_unitaddr(struct qeth_card *card)
{
int length;
char *prcd;
int rc;
QETH_DBF_TEXT(SETUP, 2, "getunit");
rc = qeth_read_conf_data(card, (void **) &prcd, &length);
if (rc) {
PRINT_ERR("qeth_read_conf_data for device %s returned %i\n",
CARD_DDEV_ID(card), rc);
return rc;
}
card->info.chpid = prcd[30];
card->info.unit_addr2 = prcd[31];
card->info.cula = prcd[63];
card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
(prcd[0x11] == _ascebc['M']));
kfree(prcd);
return 0;
}
static void qeth_init_tokens(struct qeth_card *card)
{
card->token.issuer_rm_w = 0x00010103UL;
card->token.cm_filter_w = 0x00010108UL;
card->token.cm_connection_w = 0x0001010aUL;
card->token.ulp_filter_w = 0x0001010bUL;
card->token.ulp_connection_w = 0x0001010dUL;
}
static void qeth_init_func_level(struct qeth_card *card)
{
if (card->ipato.enabled) {
if (card->info.type == QETH_CARD_TYPE_IQD)
card->info.func_level =
QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT;
else
card->info.func_level =
QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT;
} else {
if (card->info.type == QETH_CARD_TYPE_IQD)
/*FIXME:why do we have same values for dis and ena for
osae??? */
card->info.func_level =
QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT;
else
card->info.func_level =
QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT;
}
}
static inline __u16 qeth_raw_devno_from_bus_id(char *id)
{
id += (strlen(id) - 4);
return (__u16) simple_strtoul(id, &id, 16);
}
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) {
PRINT_ERR("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;
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));
temp = qeth_raw_devno_from_bus_id(CARD_DDEV_ID(card));
memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp, 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) {
PRINT_ERR("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) {
PRINT_WARN("IDX activate timed out!\n");
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) == 0x19)
PRINT_ERR("IDX_ACTIVATE on write channel device %s: "
"adapter exclusively used by another host\n",
CARD_WDEV_ID(card));
else
PRINT_ERR("IDX_ACTIVATE on write channel device %s: "
"negative reply\n", CARD_WDEV_ID(card));
goto out;
}
memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
PRINT_WARN("IDX_ACTIVATE on write channel device %s: "
"function level mismatch "
"(sent: 0x%x, received: 0x%x)\n",
CARD_WDEV_ID(card), 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(iob->data))
goto out;
if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19)
PRINT_ERR("IDX_ACTIVATE on read channel device %s: "
"adapter exclusively used by another host\n",
CARD_RDEV_ID(card));
else
PRINT_ERR("IDX_ACTIVATE on read channel device %s: "
"negative reply\n", CARD_RDEV_ID(card));
goto out;
}
/**
* temporary fix for microcode bug
* to revert it,replace OR by AND
*/
if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) ||
(card->info.type == QETH_CARD_TYPE_OSAE))
card->info.portname_required = 1;
memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
if (temp != qeth_peer_func_level(card->info.func_level)) {
PRINT_WARN("IDX_ACTIVATE on read channel device %s: function "
"level mismatch (sent: 0x%x, received: 0x%x)\n",
CARD_RDEV_ID(card), 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;
QETH_DBF_TEXT(TRACE, 2, "sendctl");
reply = qeth_alloc_reply(card);
if (!reply) {
PRINT_WARN("Could not alloc qeth_reply!\n");
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))
timeout = jiffies + QETH_IPA_TIMEOUT;
else
timeout = jiffies + QETH_TIMEOUT;
QETH_DBF_TEXT(TRACE, 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) {
PRINT_WARN("qeth_send_control_data: "
"ccw_device_start rc = %i\n", rc);
QETH_DBF_TEXT_(TRACE, 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;
}
while (!atomic_read(&reply->received)) {
if (time_after(jiffies, timeout)) {
spin_lock_irqsave(&reply->card->lock, flags);
list_del_init(&reply->list);
spin_unlock_irqrestore(&reply->card->lock, flags);
reply->rc = -ETIME;
atomic_inc(&reply->received);
wake_up(&reply->wait_q);
}
cpu_relax();
};
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_OSAE:
switch (card->info.link_type) {
case QETH_LINK_TYPE_HSTR:
case QETH_LINK_TYPE_LANE_TR:
return 2000;
default:
return 1492;
}
default:
return 1500;
}
}
static inline int qeth_get_max_mtu_for_card(int cardtype)
{
switch (cardtype) {
case QETH_CARD_TYPE_UNKNOWN:
case QETH_CARD_TYPE_OSAE:
case QETH_CARD_TYPE_OSN:
return 61440;
case QETH_CARD_TYPE_IQD:
return 57344;
default:
return 1500;
}
}
static inline int qeth_get_mtu_out_of_mpc(int cardtype)
{
switch (cardtype) {
case QETH_CARD_TYPE_IQD:
return 1;
default:
return 0;
}
}
static inline int qeth_get_mtu_outof_framesize(int framesize)
{
switch (framesize) {
case 0x4000:
return 8192;
case 0x6000:
return 16384;
case 0xa000:
return 32768;
case 0xffff:
return 57344;
default:
return 0;
}
}
static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
{
switch (card->info.type) {
case QETH_CARD_TYPE_OSAE:
return ((mtu >= 576) && (mtu <= 61440));
case QETH_CARD_TYPE_IQD:
return ((mtu >= 576) &&
(mtu <= card->info.max_mtu + 4096 - 32));
case QETH_CARD_TYPE_OSN:
case QETH_CARD_TYPE_UNKNOWN:
default:
return 1;
}
}
static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
unsigned long data)
{
__u16 mtu, framesize;
__u16 len;
__u8 link_type;
struct qeth_cmd_buffer *iob;
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 (qeth_get_mtu_out_of_mpc(card->info.type)) {
memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
mtu = qeth_get_mtu_outof_framesize(framesize);
if (!mtu) {
iob->rc = -EINVAL;
QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
return 0;
}
card->info.max_mtu = mtu;
card->info.initial_mtu = mtu;
card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
} else {
card->info.initial_mtu = qeth_get_initial_mtu_for_card(card);
card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type);
card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
}
memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
memcpy(&link_type,
QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
card->info.link_type = link_type;
} else
card->info.link_type = 0;
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;
/*FIXME: trace view callbacks*/
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;
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);
QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc);
return 0;
}
static int qeth_ulp_setup(struct qeth_card *card)
{
int rc;
__u16 temp;
struct qeth_cmd_buffer *iob;
struct ccw_dev_id dev_id;
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_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 = kmalloc(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));
/* give inbound qeth_qdio_buffers their qdio_buffers */
for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
card->qdio.in_q->bufs[i].buffer =
&card->qdio.in_q->qdio_bufs[i];
/* inbound buffer pool */
if (qeth_alloc_buffer_pool(card))
goto out_freeinq;
/* outbound */
card->qdio.out_qs =
kmalloc(card->qdio.no_out_queues *
sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
if (!card->qdio.out_qs)
goto out_freepool;
for (i = 0; i < card->qdio.no_out_queues; ++i) {
card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q),
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 *));
memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q));
card->qdio.out_qs[i]->queue_no = i;
/* give outbound qeth_qdio_buffers their qdio_buffers */
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
card->qdio.out_qs[i]->bufs[j].buffer =
&card->qdio.out_qs[i]->qdio_bufs[j];
skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j].
skb_list);
lockdep_set_class(
&card->qdio.out_qs[i]->bufs[j].skb_list.lock,
&qdio_out_skb_queue_key);
INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list);
}
}
return 0;
out_freeoutq:
while (i > 0)
kfree(card->qdio.out_qs[--i]);
kfree(card->qdio.out_qs);
card->qdio.out_qs = NULL;
out_freepool:
qeth_free_buffer_pool(card);
out_freeinq:
kfree(card->qdio.in_q);
card->qdio.in_q = NULL;
out_nomem:
atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
return -ENOMEM;
}
static void qeth_create_qib_param_field(struct qeth_card *card,
char *param_field)
{
param_field[0] = _ascebc['P'];
param_field[1] = _ascebc['C'];
param_field[2] = _ascebc['I'];
param_field[3] = _ascebc['T'];
*((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
*((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
*((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
}
static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
char *param_field)
{
param_field[16] = _ascebc['B'];
param_field[17] = _ascebc['L'];
param_field[18] = _ascebc['K'];
param_field[19] = _ascebc['T'];
*((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
*((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
*((unsigned int *) (&param_field[28])) =
card->info.blkt.inter_packet_jumbo;
}
static int qeth_qdio_activate(struct qeth_card *card)
{
QETH_DBF_TEXT(SETUP, 3, "qdioact");
return qdio_activate(CARD_DDEV(card), 0);
}
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;
PRINT_INFO("Device %s/%s/%s is a%s card%s%s%s\n"
"with link type %s (portname: %s)\n",
CARD_RDEV_ID(card),
CARD_WDEV_ID(card),
CARD_DDEV_ID(card),
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])
PRINT_INFO("Device %s/%s/%s is a%s "
"card%s%s%s\nwith link type %s "
"(no portname needed by interface).\n",
CARD_RDEV_ID(card),
CARD_WDEV_ID(card),
CARD_DDEV_ID(card),
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
PRINT_INFO("Device %s/%s/%s is a%s "
"card%s%s%s\nwith link type %s.\n",
CARD_RDEV_ID(card),
CARD_WDEV_ID(card),
CARD_DDEV_ID(card),
qeth_get_cardname(card),
(card->info.mcl_level[0]) ? " (level: " : "",
(card->info.mcl_level[0]) ? card->info.mcl_level : "",
(card->info.mcl_level[0]) ? ")" : "",
qeth_get_cardname_short(card));
}
void qeth_print_status_message(struct qeth_card *card)
{
switch (card->info.type) {
case QETH_CARD_TYPE_OSAE:
/* VM will use a non-zero first character
* to indicate a HiperSockets like reporting
* of the level OSA sets the first character to zero
* */
if (!card->info.mcl_level[0]) {
sprintf(card->info.mcl_level, "%02x%02x",
card->info.mcl_level[2],
card->info.mcl_level[3]);
card->info.mcl_level[QETH_MCL_LENGTH] = 0;
break;
}
/* fallthrough */
case QETH_CARD_TYPE_IQD:
if (card->info.guestlan) {
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);
void qeth_put_buffer_pool_entry(struct qeth_card *card,
struct qeth_buffer_pool_entry *entry)
{
QETH_DBF_TEXT(TRACE, 6, "ptbfplen");
list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
}
EXPORT_SYMBOL_GPL(qeth_put_buffer_pool_entry);
static void qeth_initialize_working_pool_list(struct qeth_card *card)
{
struct qeth_buffer_pool_entry *entry;
QETH_DBF_TEXT(TRACE, 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;
}
}
/* no free buffer in pool so take first one and swap pages */
entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
struct qeth_buffer_pool_entry, list);
for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
if (page_count(virt_to_page(entry->elements[i])) > 1) {
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;
pool_entry = qeth_find_free_buffer_pool_entry(card);
if (!pool_entry)
return 1;
/*
* since the buffer is accessed only from the input_tasklet
* there shouldn't be a need to synchronize; also, since we use
* the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off
* buffers
*/
BUG_ON(!pool_entry);
buf->pool_entry = pool_entry;
for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
buf->buffer->element[i].length = PAGE_SIZE;
buf->buffer->element[i].addr = pool_entry->elements[i];
if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
else
buf->buffer->element[i].flags = 0;
}
return 0;
}
int qeth_init_qdio_queues(struct qeth_card *card)
{
int i, j;
int rc;
QETH_DBF_TEXT(SETUP, 2, "initqdqs");
/* inbound queue */
memset(card->qdio.in_q->qdio_bufs, 0,
QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
qeth_initialize_working_pool_list(card);
/*give only as many buffers to hardware as we have buffer pool entries*/
for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
card->qdio.in_q->next_buf_to_init =
card->qdio.in_buf_pool.buf_count - 1;
rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
card->qdio.in_buf_pool.buf_count - 1, NULL);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
return rc;
}
rc = qdio_synchronize(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
return rc;
}
/* outbound queue */
for (i = 0; i < card->qdio.no_out_queues; ++i) {
memset(card->qdio.out_qs[i]->qdio_bufs, 0,
QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer));
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
qeth_clear_output_buffer(card->qdio.out_qs[i],
&card->qdio.out_qs[i]->bufs[j]);
}
card->qdio.out_qs[i]->card = card;
card->qdio.out_qs[i]->next_buf_to_fill = 0;
card->qdio.out_qs[i]->do_pack = 0;
atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
atomic_set(&card->qdio.out_qs[i]->state,
QETH_OUT_Q_UNLOCKED);
}
return 0;
}
EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
{
switch (link_type) {
case QETH_LINK_TYPE_HSTR:
return 2;
default:
return 1;
}
}
static void qeth_fill_ipacmd_header(struct qeth_card *card,
struct qeth_ipa_cmd *cmd, __u8 command,
enum qeth_prot_versions prot)
{
memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
cmd->hdr.command = command;
cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
cmd->hdr.seqno = card->seqno.ipa;
cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
if (card->options.layer2)
cmd->hdr.prim_version_no = 2;
else
cmd->hdr.prim_version_no = 1;
cmd->hdr.param_count = 1;
cmd->hdr.prot_version = prot;
cmd->hdr.ipa_supported = 0;
cmd->hdr.ipa_enabled = 0;
}
struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
{
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
iob = qeth_wait_for_buffer(&card->write);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
qeth_fill_ipacmd_header(card, cmd, ipacmd, prot);
return iob;
}
EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
char prot_type)
{
memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
&card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
}
EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
unsigned long),
void *reply_param)
{
int rc;
char prot_type;
QETH_DBF_TEXT(TRACE, 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);
return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
static int qeth_send_startstoplan(struct qeth_card *card,
enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
{
int rc;
struct qeth_cmd_buffer *iob;
iob = qeth_get_ipacmd_buffer(card, ipacmd, prot);
rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
return rc;
}
int qeth_send_startlan(struct qeth_card *card)
{
int rc;
QETH_DBF_TEXT(SETUP, 2, "strtlan");
rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0);
return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_startlan);
int qeth_send_stoplan(struct qeth_card *card)
{
int rc = 0;
/*
* TODO: according to the IPA format document page 14,
* TCP/IP (we!) never issue a STOPLAN
* is this right ?!?
*/
QETH_DBF_TEXT(SETUP, 2, "stoplan");
rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0);
return rc;
}
EXPORT_SYMBOL_GPL(qeth_send_stoplan);
int qeth_default_setadapterparms_cb(struct qeth_card *card,
struct qeth_reply *reply, unsigned long data)
{
struct qeth_ipa_cmd *cmd;
QETH_DBF_TEXT(TRACE, 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_DBF_TEXT(TRACE, 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;
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_DBF_TEXT(TRACE, 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);
int qeth_check_qdio_errors(struct qdio_buffer *buf, unsigned int qdio_error,
unsigned int siga_error, const char *dbftext)
{
if (qdio_error || siga_error) {
QETH_DBF_TEXT(TRACE, 2, dbftext);
QETH_DBF_TEXT(QERR, 2, dbftext);
QETH_DBF_TEXT_(QERR, 2, " F15=%02X",
buf->element[15].flags & 0xff);
QETH_DBF_TEXT_(QERR, 2, " F14=%02X",
buf->element[14].flags & 0xff);
QETH_DBF_TEXT_(QERR, 2, " qerr=%X", qdio_error);
QETH_DBF_TEXT_(QERR, 2, " serr=%X", siga_error);
return 1;
}
return 0;
}
EXPORT_SYMBOL_GPL(qeth_check_qdio_errors);
void qeth_queue_input_buffer(struct qeth_card *card, int index)
{
struct qeth_qdio_q *queue = card->qdio.in_q;
int count;
int i;
int rc;
int newcount = 0;
QETH_DBF_TEXT(TRACE, 6, "queinbuf");
count = (index < queue->next_buf_to_init)?
card->qdio.in_buf_pool.buf_count -
(queue->next_buf_to_init - index) :
card->qdio.in_buf_pool.buf_count -
(queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
/* only requeue at a certain threshold to avoid SIGAs */
if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
for (i = queue->next_buf_to_init;
i < queue->next_buf_to_init + count; ++i) {
if (qeth_init_input_buffer(card,
&queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
break;
} else {
newcount++;
}
}
if (newcount < count) {
/* we are in memory shortage so we switch back to
traditional skb allocation and drop packages */
if (!atomic_read(&card->force_alloc_skb) &&
net_ratelimit())
PRINT_WARN("Switch to alloc skb\n");
atomic_set(&card->force_alloc_skb, 3);
count = newcount;
} else {
if ((atomic_read(&card->force_alloc_skb) == 1) &&
net_ratelimit())
PRINT_WARN("Switch to sg\n");
atomic_add_unless(&card->force_alloc_skb, -1, 0);
}
/*
* according to old code it should be avoided to requeue all
* 128 buffers in order to benefit from PCI avoidance.
* this function keeps at least one buffer (the buffer at
* 'index') un-requeued -> this buffer is the first buffer that
* will be requeued the next time
*/
if (card->options.performance_stats) {
card->perf_stats.inbound_do_qdio_cnt++;
card->perf_stats.inbound_do_qdio_start_time =
qeth_get_micros();
}
rc = do_QDIO(CARD_DDEV(card),
QDIO_FLAG_SYNC_INPUT | QDIO_FLAG_UNDER_INTERRUPT,
0, queue->next_buf_to_init, count, NULL);
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) {
PRINT_WARN("qeth_queue_input_buffer's do_QDIO "
"return %i (device %s).\n",
rc, CARD_DDEV_ID(card));
QETH_DBF_TEXT(TRACE, 2, "qinberr");
QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
}
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,
unsigned int siga_err)
{
int sbalf15 = buffer->buffer->element[15].flags & 0xff;
int cc = siga_err & 3;
QETH_DBF_TEXT(TRACE, 6, "hdsnderr");
qeth_check_qdio_errors(buffer->buffer, qdio_err, siga_err, "qouterr");
switch (cc) {
case 0:
if (qdio_err) {
QETH_DBF_TEXT(TRACE, 1, "lnkfail");
QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
QETH_DBF_TEXT_(TRACE, 1, "%04x %02x",
(u16)qdio_err, (u8)sbalf15);
return QETH_SEND_ERROR_LINK_FAILURE;
}
return QETH_SEND_ERROR_NONE;
case 2:
if (siga_err & QDIO_SIGA_ERROR_B_BIT_SET) {
QETH_DBF_TEXT(TRACE, 1, "SIGAcc2B");
QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
return QETH_SEND_ERROR_KICK_IT;
}
if ((sbalf15 >= 15) && (sbalf15 <= 31))
return QETH_SEND_ERROR_RETRY;
return QETH_SEND_ERROR_LINK_FAILURE;
/* look at qdio_error and sbalf 15 */
case 1:
QETH_DBF_TEXT(TRACE, 1, "SIGAcc1");
QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
return QETH_SEND_ERROR_LINK_FAILURE;
case 3:
default:
QETH_DBF_TEXT(TRACE, 1, "SIGAcc3");
QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
return QETH_SEND_ERROR_KICK_IT;
}
}
/*
* Switched to packing state if the number of used buffers on a queue
* reaches a certain limit.
*/
static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
{
if (!queue->do_pack) {
if (atomic_read(&queue->used_buffers)
>= QETH_HIGH_WATERMARK_PACK){
/* switch non-PACKING -> PACKING */
QETH_DBF_TEXT(TRACE, 6, "np->pack");
if (queue->card->options.performance_stats)
queue->card->perf_stats.sc_dp_p++;
queue->do_pack = 1;
}
}
}
/*
* Switches from packing to non-packing mode. If there is a packing
* buffer on the queue this buffer will be prepared to be flushed.
* In that case 1 is returned to inform the caller. If no buffer
* has to be flushed, zero is returned.
*/
static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
{
struct qeth_qdio_out_buffer *buffer;
int flush_count = 0;
if (queue->do_pack) {
if (atomic_read(&queue->used_buffers)
<= QETH_LOW_WATERMARK_PACK) {
/* switch PACKING -> non-PACKING */
QETH_DBF_TEXT(TRACE, 6, "pack->np");
if (queue->card->options.performance_stats)
queue->card->perf_stats.sc_p_dp++;
queue->do_pack = 0;
/* flush packing buffers */
buffer = &queue->bufs[queue->next_buf_to_fill];
if ((atomic_read(&buffer->state) ==
QETH_QDIO_BUF_EMPTY) &&
(buffer->next_element_to_fill > 0)) {
atomic_set(&buffer->state,
QETH_QDIO_BUF_PRIMED);
flush_count++;
queue->next_buf_to_fill =
(queue->next_buf_to_fill + 1) %
QDIO_MAX_BUFFERS_PER_Q;
}
}
}
return flush_count;
}
/*
* Called to flush a packing buffer if no more pci flags are on the queue.
* Checks if there is a packing buffer and prepares it to be flushed.
* In that case returns 1, otherwise zero.
*/
static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue)
{
struct qeth_qdio_out_buffer *buffer;
buffer = &queue->bufs[queue->next_buf_to_fill];
if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
(buffer->next_element_to_fill > 0)) {
/* it's a packing buffer */
atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
queue->next_buf_to_fill =
(queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
return 1;
}
return 0;
}
static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int under_int,
int index, int count)
{
struct qeth_qdio_out_buffer *buf;
int rc;
int i;
unsigned int qdio_flags;
QETH_DBF_TEXT(TRACE, 6, "flushbuf");
for (i = index; i < index + count; ++i) {
buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
buf->buffer->element[buf->next_element_to_fill - 1].flags |=
SBAL_FLAGS_LAST_ENTRY;
if (queue->card->info.type == QETH_CARD_TYPE_IQD)
continue;
if (!queue->do_pack) {
if ((atomic_read(&queue->used_buffers) >=
(QETH_HIGH_WATERMARK_PACK -
QETH_WATERMARK_PACK_FUZZ)) &&
!atomic_read(&queue->set_pci_flags_count)) {
/* it's likely that we'll go to packing
* mode soon */
atomic_inc(&queue->set_pci_flags_count);
buf->buffer->element[0].flags |= 0x40;
}
} else {
if (!atomic_read(&queue->set_pci_flags_count)) {
/*
* there's no outstanding PCI any more, so we
* have to request a PCI to be sure the the PCI
* will wake at some time in the future then we
* can flush packed buffers that might still be
* hanging around, which can happen if no
* further send was requested by the stack
*/
atomic_inc(&queue->set_pci_flags_count);
buf->buffer->element[0].flags |= 0x40;
}
}
}
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 (under_int)
qdio_flags |= QDIO_FLAG_UNDER_INTERRUPT;
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, NULL);
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;
if (rc) {
QETH_DBF_TEXT(TRACE, 2, "flushbuf");
QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_DDEV_ID(queue->card));
queue->card->stats.tx_errors += count;
/* this must not happen under normal circumstances. if it
* happens something is really wrong -> recover */
qeth_schedule_recovery(queue->card);
return;
}
atomic_add(count, &queue->used_buffers);
if (queue->card->options.performance_stats)
queue->card->perf_stats.bufs_sent += count;
}
static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
{
int index;
int flush_cnt = 0;
int q_was_packing = 0;
/*
* check if weed have to switch to non-packing mode or if
* we have to get a pci flag out on the queue
*/
if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
!atomic_read(&queue->set_pci_flags_count)) {
if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
QETH_OUT_Q_UNLOCKED) {
/*
* If we get in here, there was no action in
* do_send_packet. So, we check if there is a
* packing buffer to be flushed here.
*/
netif_stop_queue(queue->card->dev);
index = queue->next_buf_to_fill;
q_was_packing = queue->do_pack;
/* queue->do_pack may change */
barrier();
flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
if (!flush_cnt &&
!atomic_read(&queue->set_pci_flags_count))
flush_cnt +=
qeth_flush_buffers_on_no_pci(queue);
if (queue->card->options.performance_stats &&
q_was_packing)
queue->card->perf_stats.bufs_sent_pack +=
flush_cnt;
if (flush_cnt)
qeth_flush_buffers(queue, 1, index, flush_cnt);
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
}
}
}
void qeth_qdio_output_handler(struct ccw_device *ccwdev, unsigned int status,
unsigned int qdio_error, unsigned int siga_error,
unsigned 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_DBF_TEXT(TRACE, 6, "qdouhdl");
if (status & QDIO_STATUS_LOOK_FOR_ERROR) {
if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION) {
QETH_DBF_TEXT(TRACE, 2, "achkcond");
QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
QETH_DBF_TEXT_(TRACE, 2, "%08x", status);
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) {
buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
/*we only handle the KICK_IT error by doing a recovery */
if (qeth_handle_send_error(card, buffer,
qdio_error, siga_error)
== QETH_SEND_ERROR_KICK_IT){
netif_stop_queue(card->dev);
qeth_schedule_recovery(card);
return;
}
qeth_clear_output_buffer(queue, buffer);
}
atomic_sub(count, &queue->used_buffers);
/* check if we need to do something on this outbound queue */
if (card->info.type != QETH_CARD_TYPE_IQD)
qeth_check_outbound_queue(queue);
netif_wake_queue(queue->card->dev);
if (card->options.performance_stats)
card->perf_stats.outbound_handler_time += qeth_get_micros() -
card->perf_stats.outbound_handler_start_time;
}
EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
int qeth_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
{
int cast_type = RTN_UNSPEC;
if (card->info.type == QETH_CARD_TYPE_OSN)
return cast_type;
if (skb->dst && skb->dst->neighbour) {
cast_type = skb->dst->neighbour->type;
if ((cast_type == RTN_BROADCAST) ||
(cast_type == RTN_MULTICAST) ||
(cast_type == RTN_ANYCAST))
return cast_type;
else
return RTN_UNSPEC;
}
/* try something else */
if (skb->protocol == ETH_P_IPV6)
return (skb_network_header(skb)[24] == 0xff) ?
RTN_MULTICAST : 0;
else if (skb->protocol == ETH_P_IP)
return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
RTN_MULTICAST : 0;
/* ... */
if (!memcmp(skb->data, skb->dev->broadcast, 6))
return RTN_BROADCAST;
else {
u16 hdr_mac;
hdr_mac = *((u16 *)skb->data);
/* tr multicast? */
switch (card->info.link_type) {
case QETH_LINK_TYPE_HSTR:
case QETH_LINK_TYPE_LANE_TR:
if ((hdr_mac == QETH_TR_MAC_NC) ||
(hdr_mac == QETH_TR_MAC_C))
return RTN_MULTICAST;
break;
/* eth or so multicast? */
default:
if ((hdr_mac == QETH_ETH_MAC_V4) ||
(hdr_mac == QETH_ETH_MAC_V6))
return RTN_MULTICAST;
}
}
return cast_type;
}
EXPORT_SYMBOL_GPL(qeth_get_cast_type);
int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
int ipv, int cast_type)
{
if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE))
return card->qdio.default_out_queue;
switch (card->qdio.no_out_queues) {
case 4:
if (cast_type && card->info.is_multicast_different)
return card->info.is_multicast_different &
(card->qdio.no_out_queues - 1);
if (card->qdio.do_prio_queueing && (ipv == 4)) {
const u8 tos = ip_hdr(skb)->tos;
if (card->qdio.do_prio_queueing ==
QETH_PRIO_Q_ING_TOS) {
if (tos & IP_TOS_NOTIMPORTANT)
return 3;
if (tos & IP_TOS_HIGHRELIABILITY)
return 2;
if (tos & IP_TOS_HIGHTHROUGHPUT)
return 1;
if (tos & IP_TOS_LOWDELAY)
return 0;
}
if (card->qdio.do_prio_queueing ==
QETH_PRIO_Q_ING_PREC)
return 3 - (tos >> 6);
} else if (card->qdio.do_prio_queueing && (ipv == 6)) {
/* TODO: IPv6!!! */
}
return card->qdio.default_out_queue;
case 1: /* fallthrough for single-out-queue 1920-device */
default:
return card->qdio.default_out_queue;
}
}
EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
static void __qeth_free_new_skb(struct sk_buff *orig_skb,
struct sk_buff *new_skb)
{
if (orig_skb != new_skb)
dev_kfree_skb_any(new_skb);
}
static inline struct sk_buff *qeth_realloc_headroom(struct qeth_card *card,
struct sk_buff *skb, int size)
{
struct sk_buff *new_skb = skb;
if (skb_headroom(skb) >= size)
return skb;
new_skb = skb_realloc_headroom(skb, size);
if (!new_skb)
PRINT_ERR("Could not realloc headroom for qeth_hdr "
"on interface %s", QETH_CARD_IFNAME(card));
return new_skb;
}
struct sk_buff *qeth_prepare_skb(struct qeth_card *card, struct sk_buff *skb,
struct qeth_hdr **hdr)
{
struct sk_buff *new_skb;
QETH_DBF_TEXT(TRACE, 6, "prepskb");
new_skb = qeth_realloc_headroom(card, skb,
sizeof(struct qeth_hdr));
if (!new_skb)
return NULL;
*hdr = ((struct qeth_hdr *)qeth_push_skb(card, new_skb,
sizeof(struct qeth_hdr)));
if (*hdr == NULL) {
__qeth_free_new_skb(skb, new_skb);
return NULL;
}
return new_skb;
}
EXPORT_SYMBOL_GPL(qeth_prepare_skb);
int qeth_get_elements_no(struct qeth_card *card, void *hdr,
struct sk_buff *skb, int elems)
{
int elements_needed = 0;
if (skb_shinfo(skb)->nr_frags > 0)
elements_needed = (skb_shinfo(skb)->nr_frags + 1);
if (elements_needed == 0)
elements_needed = 1 + (((((unsigned long) hdr) % PAGE_SIZE)
+ skb->len) >> PAGE_SHIFT);
if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
PRINT_ERR("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);
static void __qeth_fill_buffer(struct sk_buff *skb, struct qdio_buffer *buffer,
int is_tso, int *next_element_to_fill)
{
int length = skb->len;
int length_here;
int element;
char *data;
int first_lap ;
element = *next_element_to_fill;
data = skb->data;
first_lap = (is_tso == 0 ? 1 : 0);
while (length > 0) {
/* length_here is the remaining amount of data in this page */
length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
if (length < length_here)
length_here = length;
buffer->element[element].addr = data;
buffer->element[element].length = length_here;
length -= length_here;
if (!length) {
if (first_lap)
buffer->element[element].flags = 0;
else
buffer->element[element].flags =
SBAL_FLAGS_LAST_FRAG;
} else {
if (first_lap)
buffer->element[element].flags =
SBAL_FLAGS_FIRST_FRAG;
else
buffer->element[element].flags =
SBAL_FLAGS_MIDDLE_FRAG;
}
data += length_here;
element++;
first_lap = 0;
}
*next_element_to_fill = element;
}
static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
struct qeth_qdio_out_buffer *buf, struct sk_buff *skb)
{
struct qdio_buffer *buffer;
struct qeth_hdr_tso *hdr;
int flush_cnt = 0, hdr_len, large_send = 0;
QETH_DBF_TEXT(TRACE, 6, "qdfillbf");
buffer = buf->buffer;
atomic_inc(&skb->users);
skb_queue_tail(&buf->skb_list, skb);
hdr = (struct qeth_hdr_tso *) skb->data;
/*check first on TSO ....*/
if (hdr->hdr.hdr.l3.id == QETH_HEADER_TYPE_TSO) {
int element = buf->next_element_to_fill;
hdr_len = sizeof(struct qeth_hdr_tso) + hdr->ext.dg_hdr_len;
/*fill first buffer entry only with header information */
buffer->element[element].addr = skb->data;
buffer->element[element].length = hdr_len;
buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
buf->next_element_to_fill++;
skb->data += hdr_len;
skb->len -= hdr_len;
large_send = 1;
}
if (skb_shinfo(skb)->nr_frags == 0)
__qeth_fill_buffer(skb, buffer, large_send,
(int *)&buf->next_element_to_fill);
else
__qeth_fill_buffer_frag(skb, buffer, large_send,
(int *)&buf->next_element_to_fill);
if (!queue->do_pack) {
QETH_DBF_TEXT(TRACE, 6, "fillbfnp");
/* set state to PRIMED -> will be flushed */
atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
flush_cnt = 1;
} else {
QETH_DBF_TEXT(TRACE, 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)) {
/*
* packed buffer if full -> set state PRIMED
* -> will be flushed
*/
atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
flush_cnt = 1;
}
}
return flush_cnt;
}
int qeth_do_send_packet_fast(struct qeth_card *card,
struct qeth_qdio_out_q *queue, struct sk_buff *skb,
struct qeth_hdr *hdr, int elements_needed,
struct qeth_eddp_context *ctx)
{
struct qeth_qdio_out_buffer *buffer;
int buffers_needed = 0;
int flush_cnt = 0;
int index;
QETH_DBF_TEXT(TRACE, 6, "dosndpfa");
/* spin until we get the queue ... */
while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
/* ... now we've got the queue */
index = queue->next_buf_to_fill;
buffer = &queue->bufs[queue->next_buf_to_fill];
/*
* check if buffer is empty to make sure that we do not 'overtake'
* ourselves and try to fill a buffer that is already primed
*/
if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
goto out;
if (ctx == NULL)
queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) %
QDIO_MAX_BUFFERS_PER_Q;
else {
buffers_needed = qeth_eddp_check_buffers_for_context(queue,
ctx);
if (buffers_needed < 0)
goto out;
queue->next_buf_to_fill =
(queue->next_buf_to_fill + buffers_needed) %
QDIO_MAX_BUFFERS_PER_Q;
}
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
if (ctx == NULL) {
qeth_fill_buffer(queue, buffer, skb);
qeth_flush_buffers(queue, 0, index, 1);
} else {
flush_cnt = qeth_eddp_fill_buffer(queue, ctx, index);
WARN_ON(buffers_needed != flush_cnt);
qeth_flush_buffers(queue, 0, index, flush_cnt);
}
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_eddp_context *ctx)
{
struct qeth_qdio_out_buffer *buffer;
int start_index;
int flush_count = 0;
int do_pack = 0;
int tmp;
int rc = 0;
QETH_DBF_TEXT(TRACE, 6, "dosndpkt");
/* spin until we get the queue ... */
while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
start_index = queue->next_buf_to_fill;
buffer = &queue->bufs[queue->next_buf_to_fill];
/*
* check if buffer is empty to make sure that we do not 'overtake'
* ourselves and try to fill a buffer that is already primed
*/
if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
return -EBUSY;
}
/* check if we need to switch packing state of this queue */
qeth_switch_to_packing_if_needed(queue);
if (queue->do_pack) {
do_pack = 1;
if (ctx == NULL) {
/* does packet fit in current buffer? */
if ((QETH_MAX_BUFFER_ELEMENTS(card) -
buffer->next_element_to_fill) < elements_needed) {
/* ... no -> set state PRIMED */
atomic_set(&buffer->state,
QETH_QDIO_BUF_PRIMED);
flush_count++;
queue->next_buf_to_fill =
(queue->next_buf_to_fill + 1) %
QDIO_MAX_BUFFERS_PER_Q;
buffer = &queue->bufs[queue->next_buf_to_fill];
/* we did a step forward, so check buffer state
* again */
if (atomic_read(&buffer->state) !=
QETH_QDIO_BUF_EMPTY){
qeth_flush_buffers(queue, 0,
start_index, flush_count);
atomic_set(&queue->state,
QETH_OUT_Q_UNLOCKED);
return -EBUSY;
}
}
} else {
/* check if we have enough elements (including following
* free buffers) to handle eddp context */
if (qeth_eddp_check_buffers_for_context(queue, ctx)
< 0) {
if (net_ratelimit())
PRINT_WARN("eddp tx_dropped 1\n");
rc = -EBUSY;
goto out;
}
}
}
if (ctx == NULL)
tmp = qeth_fill_buffer(queue, buffer, skb);
else {
tmp = qeth_eddp_fill_buffer(queue, ctx,
queue->next_buf_to_fill);
if (tmp < 0) {
PRINT_ERR("eddp tx_dropped 2\n");
rc = -EBUSY;
goto out;
}
}
queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
QDIO_MAX_BUFFERS_PER_Q;
flush_count += tmp;
out:
if (flush_count)
qeth_flush_buffers(queue, 0, start_index, flush_count);
else if (!atomic_read(&queue->set_pci_flags_count))
atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
/*
* queue->state will go from LOCKED -> UNLOCKED or from
* LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
* (switch packing state or flush buffer to get another pci flag out).
* In that case we will enter this loop
*/
while (atomic_dec_return(&queue->state)) {
flush_count = 0;
start_index = queue->next_buf_to_fill;
/* check if we can go back to non-packing state */
flush_count += qeth_switch_to_nonpacking_if_needed(queue);
/*
* check if we need to flush a packing buffer to get a pci
* flag out on the queue
*/
if (!flush_count && !atomic_read(&queue->set_pci_flags_count))
flush_count += qeth_flush_buffers_on_no_pci(queue);
if (flush_count)
qeth_flush_buffers(queue, 0, start_index, flush_count);
}
/* at this point the queue is UNLOCKED again */
if (queue->card->options.performance_stats && do_pack)
queue->card->perf_stats.bufs_sent_pack += flush_count;
return rc;
}
EXPORT_SYMBOL_GPL(qeth_do_send_packet);
static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
struct qeth_reply *reply, unsigned long data)
{
struct qeth_ipa_cmd *cmd;
struct qeth_ipacmd_setadpparms *setparms;
QETH_DBF_TEXT(TRACE, 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_DBF_TEXT_(TRACE, 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_DBF_TEXT(TRACE, 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_DBF_TEXT_(TRACE, 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 = netdev_priv(dev);
QETH_DBF_TEXT(TRACE, 4, "chgmtu");
sprintf(dbf_text, "%8x", new_mtu);
QETH_DBF_TEXT(TRACE, 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 = netdev_priv(dev);
QETH_DBF_TEXT(TRACE, 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_DBF_TEXT(TRACE, 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_DBF_TEXT(TRACE, 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);
void qeth_tx_timeout(struct net_device *dev)
{
struct qeth_card *card;
card = netdev_priv(dev);
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 = netdev_priv(dev);
int rc = 0;
switch (regnum) {
case MII_BMCR: /* Basic mode control register */
rc = BMCR_FULLDPLX;
if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
(card->info.link_type != QETH_LINK_TYPE_OSN) &&
(card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
rc |= BMCR_SPEED100;
break;
case MII_BMSR: /* Basic mode status register */
rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
BMSR_100BASE4;
break;
case MII_PHYSID1: /* PHYS ID 1 */
rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
dev->dev_addr[2];
rc = (rc >> 5) & 0xFFFF;
break;
case MII_PHYSID2: /* PHYS ID 2 */
rc = (dev->dev_addr[2] << 10) & 0xFFFF;
break;
case MII_ADVERTISE: /* Advertisement control reg */
rc = ADVERTISE_ALL;
break;
case MII_LPA: /* Link partner ability reg */
rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
LPA_100BASE4 | LPA_LPACK;
break;
case MII_EXPANSION: /* Expansion register */
break;
case MII_DCOUNTER: /* disconnect counter */
break;
case MII_FCSCOUNTER: /* false carrier counter */
break;
case MII_NWAYTEST: /* N-way auto-neg test register */
break;
case MII_RERRCOUNTER: /* rx error counter */
rc = card->stats.rx_errors;
break;
case MII_SREVISION: /* silicon revision */
break;
case MII_RESV1: /* reserved 1 */
break;
case MII_LBRERROR: /* loopback, rx, bypass error */
break;
case MII_PHYADDR: /* physical address */
break;
case MII_RESV2: /* reserved 2 */
break;
case MII_TPISTATUS: /* TPI status for 10mbps */
break;
case MII_NCONFIG: /* network interface config */
break;
default:
break;
}
return rc;
}
EXPORT_SYMBOL_GPL(qeth_mdio_read);
static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
struct qeth_cmd_buffer *iob, int len,
int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
unsigned long),
void *reply_param)
{
u16 s1, s2;
QETH_DBF_TEXT(TRACE, 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);
/* adjust PDU length fields in IPA_PDU_HEADER */
s1 = (u32) IPA_PDU_HEADER_SIZE + len;
s2 = (u32) len;
memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
reply_cb, reply_param);
}
static int qeth_snmp_command_cb(struct qeth_card *card,
struct qeth_reply *reply, unsigned long sdata)
{
struct qeth_ipa_cmd *cmd;
struct qeth_arp_query_info *qinfo;
struct qeth_snmp_cmd *snmp;
unsigned char *data;
__u16 data_len;
QETH_DBF_TEXT(TRACE, 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_DBF_TEXT_(TRACE, 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_DBF_TEXT_(TRACE, 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);
/* check if there is enough room in userspace */
if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
QETH_DBF_TEXT_(TRACE, 4, "scer3%i", -ENOMEM);
cmd->hdr.return_code = -ENOMEM;
return 0;
}
QETH_DBF_TEXT_(TRACE, 4, "snore%i",
cmd->data.setadapterparms.hdr.used_total);
QETH_DBF_TEXT_(TRACE, 4, "sseqn%i",
cmd->data.setadapterparms.hdr.seq_no);
/*copy entries to user buffer*/
if (cmd->data.setadapterparms.hdr.seq_no == 1) {
memcpy(qinfo->udata + qinfo->udata_offset,
(char *)snmp,
data_len + offsetof(struct qeth_snmp_cmd, data));
qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
} else {
memcpy(qinfo->udata + qinfo->udata_offset,
(char *)&snmp->request, data_len);
}
qinfo->udata_offset += data_len;
/* check if all replies received ... */
QETH_DBF_TEXT_(TRACE, 4, "srtot%i",
cmd->data.setadapterparms.hdr.used_total);
QETH_DBF_TEXT_(TRACE, 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_DBF_TEXT(TRACE, 3, "snmpcmd");
if (card->info.guestlan)
return -EOPNOTSUPP;
if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
(!card->options.layer2)) {
PRINT_WARN("SNMP Query MIBS not supported "
"on %s!\n", QETH_CARD_IFNAME(card));
return -EOPNOTSUPP;
}
/* skip 4 bytes (data_len struct member) to get req_len */
if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
return -EFAULT;
ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL);
if (!ureq) {
QETH_DBF_TEXT(TRACE, 2, "snmpnome");
return -ENOMEM;
}
if (copy_from_user(ureq, udata,
req_len + sizeof(struct qeth_snmp_ureq_hdr))) {
kfree(ureq);
return -EFAULT;
}
qinfo.udata_len = ureq->hdr.data_len;
qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
if (!qinfo.udata) {
kfree(ureq);
return -ENOMEM;
}
qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
QETH_SNMP_SETADP_CMDLENGTH + req_len);
cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
qeth_snmp_command_cb, (void *)&qinfo);
if (rc)
PRINT_WARN("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 inline int qeth_get_qdio_q_format(struct qeth_card *card)
{
switch (card->info.type) {
case QETH_CARD_TYPE_IQD:
return 2;
default:
return 0;
}
}
static int qeth_qdio_establish(struct qeth_card *card)
{
struct qdio_initialize init_data;
char *qib_param_field;
struct qdio_buffer **in_sbal_ptrs;
struct qdio_buffer **out_sbal_ptrs;
int i, j, k;
int rc = 0;
QETH_DBF_TEXT(SETUP, 2, "qdioest");
qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
GFP_KERNEL);
if (!qib_param_field)
return -ENOMEM;
qeth_create_qib_param_field(card, qib_param_field);
qeth_create_qib_param_field_blkt(card, qib_param_field);
in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
GFP_KERNEL);
if (!in_sbal_ptrs) {
kfree(qib_param_field);
return -ENOMEM;
}
for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
in_sbal_ptrs[i] = (struct qdio_buffer *)
virt_to_phys(card->qdio.in_q->bufs[i].buffer);
out_sbal_ptrs =
kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
sizeof(void *), GFP_KERNEL);
if (!out_sbal_ptrs) {
kfree(in_sbal_ptrs);
kfree(qib_param_field);
return -ENOMEM;
}
for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
card->qdio.out_qs[i]->bufs[j].buffer);
}
memset(&init_data, 0, sizeof(struct qdio_initialize));
init_data.cdev = CARD_DDEV(card);
init_data.q_format = qeth_get_qdio_q_format(card);
init_data.qib_param_field_format = 0;
init_data.qib_param_field = qib_param_field;
init_data.min_input_threshold = QETH_MIN_INPUT_THRESHOLD;
init_data.max_input_threshold = QETH_MAX_INPUT_THRESHOLD;
init_data.min_output_threshold = QETH_MIN_OUTPUT_THRESHOLD;
init_data.max_output_threshold = QETH_MAX_OUTPUT_THRESHOLD;
init_data.no_input_qs = 1;
init_data.no_output_qs = card->qdio.no_out_queues;
init_data.input_handler = card->discipline.input_handler;
init_data.output_handler = card->discipline.output_handler;
init_data.int_parm = (unsigned long) card;
init_data.flags = QDIO_INBOUND_0COPY_SBALS |
QDIO_OUTBOUND_0COPY_SBALS |
QDIO_USE_OUTBOUND_PCIS;
init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
rc = qdio_initialize(&init_data);
if (rc)
atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
}
kfree(out_sbal_ptrs);
kfree(in_sbal_ptrs);
kfree(qib_param_field);
return rc;
}
static void qeth_core_free_card(struct qeth_card *card)
{
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);
kfree(card);
}
static struct ccw_device_id qeth_ids[] = {
{CCW_DEVICE(0x1731, 0x01), .driver_info = QETH_CARD_TYPE_OSAE},
{CCW_DEVICE(0x1731, 0x05), .driver_info = QETH_CARD_TYPE_IQD},
{CCW_DEVICE(0x1731, 0x06), .driver_info = QETH_CARD_TYPE_OSN},
{},
};
MODULE_DEVICE_TABLE(ccw, qeth_ids);
static struct ccw_driver qeth_ccw_driver = {
.name = "qeth",
.ids = qeth_ids,
.probe = ccwgroup_probe_ccwdev,
.remove = ccwgroup_remove_ccwdev,
};
static int qeth_core_driver_group(const char *buf, struct device *root_dev,
unsigned long driver_id)
{
const char *start, *end;
char bus_ids[3][BUS_ID_SIZE], *argv[3];
int i;
start = buf;
for (i = 0; i < 3; i++) {
static const char delim[] = { ',', ',', '\n' };
int len;
end = strchr(start, delim[i]);
if (!end)
return -EINVAL;
len = min_t(ptrdiff_t, BUS_ID_SIZE, end - start);
strncpy(bus_ids[i], start, len);
bus_ids[i][len] = '\0';
start = end + 1;
argv[i] = bus_ids[i];
}
return (ccwgroup_create(root_dev, driver_id,
&qeth_ccw_driver, 3, argv));
}
int qeth_core_hardsetup_card(struct qeth_card *card)
{
int retries = 3;
int mpno;
int rc;
QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
atomic_set(&card->force_alloc_skb, 0);
retry:
if (retries < 3) {
PRINT_WARN("Retrying to do IDX activates.\n");
ccw_device_set_offline(CARD_DDEV(card));
ccw_device_set_offline(CARD_WDEV(card));
ccw_device_set_offline(CARD_RDEV(card));
ccw_device_set_online(CARD_RDEV(card));
ccw_device_set_online(CARD_WDEV(card));
ccw_device_set_online(CARD_DDEV(card));
}
rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
if (rc == -ERESTARTSYS) {
QETH_DBF_TEXT(SETUP, 2, "break1");
return rc;
} else if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
if (--retries < 0)
goto out;
else
goto retry;
}
rc = qeth_get_unitaddr(card);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
return rc;
}
mpno = QETH_MAX_PORTNO;
if (card->info.portno > mpno) {
PRINT_ERR("Device %s does not offer port number %d \n.",
CARD_BUS_ID(card), card->info.portno);
rc = -ENODEV;
goto out;
}
qeth_init_tokens(card);
qeth_init_func_level(card);
rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
if (rc == -ERESTARTSYS) {
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;
}
rc = qeth_mpc_initialize(card);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
goto out;
}
return 0;
out:
PRINT_ERR("Initialization in hardsetup failed! rc=%d\n", rc);
return rc;
}
EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
static inline int qeth_create_skb_frag(struct qdio_buffer_element *element,
struct sk_buff **pskb, int offset, int *pfrag, int data_len)
{
struct page *page = virt_to_page(element->addr);
if (*pskb == NULL) {
/* the upper protocol layers assume that there is data in the
* skb itself. Copy a small amount (64 bytes) to make them
* happy. */
*pskb = dev_alloc_skb(64 + ETH_HLEN);
if (!(*pskb))
return -ENOMEM;
skb_reserve(*pskb, ETH_HLEN);
if (data_len <= 64) {
memcpy(skb_put(*pskb, data_len), element->addr + offset,
data_len);
} else {
get_page(page);
memcpy(skb_put(*pskb, 64), element->addr + offset, 64);
skb_fill_page_desc(*pskb, *pfrag, page, offset + 64,
data_len - 64);
(*pskb)->data_len += data_len - 64;
(*pskb)->len += data_len - 64;
(*pskb)->truesize += data_len - 64;
(*pfrag)++;
}
} else {
get_page(page);
skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
(*pskb)->data_len += data_len;
(*pskb)->len += data_len;
(*pskb)->truesize += data_len;
(*pfrag)++;
}
return 0;
}
struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
struct qdio_buffer *buffer,
struct qdio_buffer_element **__element, int *__offset,
struct qeth_hdr **hdr)
{
struct qdio_buffer_element *element = *__element;
int offset = *__offset;
struct sk_buff *skb = NULL;
int skb_len;
void *data_ptr;
int data_len;
int headroom = 0;
int use_rx_sg = 0;
int frag = 0;
QETH_DBF_TEXT(TRACE, 6, "nextskb");
/* qeth_hdr must not cross element boundaries */
if (element->length < offset + sizeof(struct qeth_hdr)) {
if (qeth_is_last_sbale(element))
return NULL;
element++;
offset = 0;
if (element->length < sizeof(struct qeth_hdr))
return NULL;
}
*hdr = element->addr + offset;
offset += sizeof(struct qeth_hdr);
if (card->options.layer2) {
if (card->info.type == QETH_CARD_TYPE_OSN) {
skb_len = (*hdr)->hdr.osn.pdu_length;
headroom = sizeof(struct qeth_hdr);
} else {
skb_len = (*hdr)->hdr.l2.pkt_length;
}
} else {
skb_len = (*hdr)->hdr.l3.length;
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;
}
if (!skb_len)
return NULL;
if ((skb_len >= card->options.rx_sg_cb) &&
(!(card->info.type == QETH_CARD_TYPE_OSN)) &&
(!atomic_read(&card->force_alloc_skb))) {
use_rx_sg = 1;
} else {
skb = dev_alloc_skb(skb_len + headroom);
if (!skb)
goto no_mem;
if (headroom)
skb_reserve(skb, headroom);
}
data_ptr = element->addr + offset;
while (skb_len) {
data_len = min(skb_len, (int)(element->length - offset));
if (data_len) {
if (use_rx_sg) {
if (qeth_create_skb_frag(element, &skb, offset,
&frag, data_len))
goto no_mem;
} else {
memcpy(skb_put(skb, data_len), data_ptr,
data_len);
}
}
skb_len -= data_len;
if (skb_len) {
if (qeth_is_last_sbale(element)) {
QETH_DBF_TEXT(TRACE, 4, "unexeob");
QETH_DBF_TEXT_(TRACE, 4, "%s",
CARD_BUS_ID(card));
QETH_DBF_TEXT(QERR, 2, "unexeob");
QETH_DBF_TEXT_(QERR, 2, "%s",
CARD_BUS_ID(card));
QETH_DBF_HEX(MISC, 4, buffer, sizeof(*buffer));
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()) {
PRINT_WARN("No memory for packet received on %s.\n",
QETH_CARD_IFNAME(card));
QETH_DBF_TEXT(TRACE, 2, "noskbmem");
QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card));
}
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;
}
}
static int qeth_register_dbf_views(void)
{
int ret;
int x;
for (x = 0; x < QETH_DBF_INFOS; x++) {
/* register the areas */
qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
qeth_dbf[x].pages,
qeth_dbf[x].areas,
qeth_dbf[x].len);
if (qeth_dbf[x].id == NULL) {
qeth_unregister_dbf_views();
return -ENOMEM;
}
/* register a view */
ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
if (ret) {
qeth_unregister_dbf_views();
return ret;
}
/* set a passing level */
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;
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) {
PRINT_ERR("Support for discipline %d not present\n",
discipline);
rc = -EINVAL;
}
return rc;
}
void qeth_core_free_discipline(struct qeth_card *card)
{
if (card->options.layer2)
symbol_put(qeth_l2_ccwgroup_driver);
else
symbol_put(qeth_l3_ccwgroup_driver);
card->discipline.ccwgdriver = NULL;
}
static int qeth_core_probe_device(struct ccwgroup_device *gdev)
{
struct qeth_card *card;
struct device *dev;
int rc;
unsigned long flags;
QETH_DBF_TEXT(SETUP, 2, "probedev");
dev = &gdev->dev;
if (!get_device(dev))
return -ENODEV;
QETH_DBF_TEXT_(SETUP, 2, "%s", gdev->dev.bus_id);
card = qeth_alloc_card();
if (!card) {
QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
rc = -ENOMEM;
goto err_dev;
}
card->read.ccwdev = gdev->cdev[0];
card->write.ccwdev = gdev->cdev[1];
card->data.ccwdev = gdev->cdev[2];
dev_set_drvdata(&gdev->dev, card);
card->gdev = gdev;
gdev->cdev[0]->handler = qeth_irq;
gdev->cdev[1]->handler = qeth_irq;
gdev->cdev[2]->handler = qeth_irq;
rc = qeth_determine_card_type(card);
if (rc) {
PRINT_WARN("%s: not a valid card type\n", __func__);
QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
goto err_card;
}
rc = qeth_setup_card(card);
if (rc) {
QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
goto err_card;
}
if (card->info.type == QETH_CARD_TYPE_OSN) {
rc = qeth_core_create_osn_attributes(dev);
if (rc)
goto err_card;
rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2);
if (rc) {
qeth_core_remove_osn_attributes(dev);
goto err_card;
}
rc = card->discipline.ccwgdriver->probe(card->gdev);
if (rc) {
qeth_core_free_discipline(card);
qeth_core_remove_osn_attributes(dev);
goto err_card;
}
} else {
rc = qeth_core_create_device_attributes(dev);
if (rc)
goto err_card;
}
write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
list_add_tail(&card->list, &qeth_core_card_list.list);
write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
return 0;
err_card:
qeth_core_free_card(card);
err_dev:
put_device(dev);
return rc;
}
static void qeth_core_remove_device(struct ccwgroup_device *gdev)
{
unsigned long flags;
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
if (card->discipline.ccwgdriver) {
card->discipline.ccwgdriver->remove(gdev);
qeth_core_free_discipline(card);
}
if (card->info.type == QETH_CARD_TYPE_OSN) {
qeth_core_remove_osn_attributes(&gdev->dev);
} else {
qeth_core_remove_device_attributes(&gdev->dev);
}
write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
list_del(&card->list);
write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
qeth_core_free_card(card);
dev_set_drvdata(&gdev->dev, NULL);
put_device(&gdev->dev);
return;
}
static int qeth_core_set_online(struct ccwgroup_device *gdev)
{
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
int rc = 0;
int def_discipline;
if (!card->discipline.ccwgdriver) {
if (card->info.type == QETH_CARD_TYPE_IQD)
def_discipline = QETH_DISCIPLINE_LAYER3;
else
def_discipline = QETH_DISCIPLINE_LAYER2;
rc = qeth_core_load_discipline(card, def_discipline);
if (rc)
goto err;
rc = card->discipline.ccwgdriver->probe(card->gdev);
if (rc)
goto err;
}
rc = card->discipline.ccwgdriver->set_online(gdev);
err:
return rc;
}
static int qeth_core_set_offline(struct ccwgroup_device *gdev)
{
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
return card->discipline.ccwgdriver->set_offline(gdev);
}
static void qeth_core_shutdown(struct ccwgroup_device *gdev)
{
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
if (card->discipline.ccwgdriver &&
card->discipline.ccwgdriver->shutdown)
card->discipline.ccwgdriver->shutdown(gdev);
}
static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
.owner = THIS_MODULE,
.name = "qeth",
.driver_id = 0xD8C5E3C8,
.probe = qeth_core_probe_device,
.remove = qeth_core_remove_device,
.set_online = qeth_core_set_online,
.set_offline = qeth_core_set_offline,
.shutdown = qeth_core_shutdown,
};
static ssize_t
qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf,
size_t count)
{
int err;
err = qeth_core_driver_group(buf, qeth_core_root_dev,
qeth_core_ccwgroup_driver.driver_id);
if (err)
return err;
else
return count;
}
static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store);
static struct {
const char str[ETH_GSTRING_LEN];
} qeth_ethtool_stats_keys[] = {
/* 0 */{"rx skbs"},
{"rx buffers"},
{"tx skbs"},
{"tx buffers"},
{"tx skbs no packing"},
{"tx buffers no packing"},
{"tx skbs packing"},
{"tx buffers packing"},
{"tx sg skbs"},
{"tx sg frags"},
/* 10 */{"rx sg skbs"},
{"rx sg frags"},
{"rx sg page allocs"},
{"tx large kbytes"},
{"tx large count"},
{"tx pk state ch n->p"},
{"tx pk state ch p->n"},
{"tx pk watermark low"},
{"tx pk watermark high"},
{"queue 0 buffer usage"},
/* 20 */{"queue 1 buffer usage"},
{"queue 2 buffer usage"},
{"queue 3 buffer usage"},
{"rx handler time"},
{"rx handler count"},
{"rx do_QDIO time"},
{"rx do_QDIO count"},
{"tx handler time"},
{"tx handler count"},
{"tx time"},
/* 30 */{"tx count"},
{"tx do_QDIO time"},
{"tx do_QDIO count"},
};
int qeth_core_get_stats_count(struct net_device *dev)
{
return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
}
EXPORT_SYMBOL_GPL(qeth_core_get_stats_count);
void qeth_core_get_ethtool_stats(struct net_device *dev,
struct ethtool_stats *stats, u64 *data)
{
struct qeth_card *card = netdev_priv(dev);
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;
}
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 = netdev_priv(dev);
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);
static int __init qeth_core_init(void)
{
int rc;
PRINT_INFO("loading core functions\n");
INIT_LIST_HEAD(&qeth_core_card_list.list);
rwlock_init(&qeth_core_card_list.rwlock);
rc = qeth_register_dbf_views();
if (rc)
goto out_err;
rc = ccw_driver_register(&qeth_ccw_driver);
if (rc)
goto ccw_err;
rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
if (rc)
goto ccwgroup_err;
rc = driver_create_file(&qeth_core_ccwgroup_driver.driver,
&driver_attr_group);
if (rc)
goto driver_err;
qeth_core_root_dev = s390_root_dev_register("qeth");
rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
if (rc)
goto register_err;
return 0;
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_unregister_dbf_views();
out_err:
PRINT_ERR("Initialization failed with code %d\n", rc);
return rc;
}
static void __exit qeth_core_exit(void)
{
s390_root_dev_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);
qeth_unregister_dbf_views();
PRINT_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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