diff options
Diffstat (limited to 'drivers/s390/net/qeth_core_main.c')
| -rw-r--r-- | drivers/s390/net/qeth_core_main.c | 5619 |
1 files changed, 5619 insertions, 0 deletions
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c new file mode 100644 index 00000000..8334dadc --- /dev/null +++ b/drivers/s390/net/qeth_core_main.c @@ -0,0 +1,5619 @@ +/* + * drivers/s390/net/qeth_core_main.c + * + * Copyright IBM Corp. 2007, 2009 + * 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> + */ + +#define KMSG_COMPONENT "qeth" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/string.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/ip.h> +#include <linux/tcp.h> +#include <linux/mii.h> +#include <linux/kthread.h> +#include <linux/slab.h> +#include <net/iucv/af_iucv.h> + +#include <asm/ebcdic.h> +#include <asm/io.h> +#include <asm/sysinfo.h> +#include <asm/compat.h> + +#include "qeth_core.h" + +struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = { + /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */ + /* N P A M L V H */ + [QETH_DBF_SETUP] = {"qeth_setup", + 8, 1, 8, 5, &debug_hex_ascii_view, NULL}, + [QETH_DBF_MSG] = {"qeth_msg", + 8, 1, 128, 3, &debug_sprintf_view, NULL}, + [QETH_DBF_CTRL] = {"qeth_control", + 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL}, +}; +EXPORT_SYMBOL_GPL(qeth_dbf); + +struct qeth_card_list_struct qeth_core_card_list; +EXPORT_SYMBOL_GPL(qeth_core_card_list); +struct kmem_cache *qeth_core_header_cache; +EXPORT_SYMBOL_GPL(qeth_core_header_cache); +static struct kmem_cache *qeth_qdio_outbuf_cache; + +static struct device *qeth_core_root_dev; +static unsigned int known_devices[][6] = QETH_MODELLIST_ARRAY; +static struct lock_class_key qdio_out_skb_queue_key; +static struct mutex qeth_mod_mutex; + +static void qeth_send_control_data_cb(struct qeth_channel *, + struct qeth_cmd_buffer *); +static int qeth_issue_next_read(struct qeth_card *); +static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *); +static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32); +static void qeth_free_buffer_pool(struct qeth_card *); +static int qeth_qdio_establish(struct qeth_card *); +static void qeth_free_qdio_buffers(struct qeth_card *); +static void qeth_notify_skbs(struct qeth_qdio_out_q *queue, + struct qeth_qdio_out_buffer *buf, + enum iucv_tx_notify notification); +static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf); +static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, + struct qeth_qdio_out_buffer *buf, + enum qeth_qdio_buffer_states newbufstate); +static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int); + +static inline const char *qeth_get_cardname(struct qeth_card *card) +{ + if (card->info.guestlan) { + switch (card->info.type) { + case QETH_CARD_TYPE_OSD: + return " Guest LAN QDIO"; + case QETH_CARD_TYPE_IQD: + return " Guest LAN Hiper"; + case QETH_CARD_TYPE_OSM: + return " Guest LAN QDIO - OSM"; + case QETH_CARD_TYPE_OSX: + return " Guest LAN QDIO - OSX"; + default: + return " unknown"; + } + } else { + switch (card->info.type) { + case QETH_CARD_TYPE_OSD: + return " OSD Express"; + case QETH_CARD_TYPE_IQD: + return " HiperSockets"; + case QETH_CARD_TYPE_OSN: + return " OSN QDIO"; + case QETH_CARD_TYPE_OSM: + return " OSM QDIO"; + case QETH_CARD_TYPE_OSX: + return " OSX QDIO"; + default: + return " unknown"; + } + } + return " n/a"; +} + +/* 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_OSD: + return "GuestLAN QDIO"; + case QETH_CARD_TYPE_IQD: + return "GuestLAN Hiper"; + case QETH_CARD_TYPE_OSM: + return "GuestLAN OSM"; + case QETH_CARD_TYPE_OSX: + return "GuestLAN OSX"; + default: + return "unknown"; + } + } else { + switch (card->info.type) { + case QETH_CARD_TYPE_OSD: + switch (card->info.link_type) { + case QETH_LINK_TYPE_FAST_ETH: + return "OSD_100"; + case QETH_LINK_TYPE_HSTR: + return "HSTR"; + case QETH_LINK_TYPE_GBIT_ETH: + return "OSD_1000"; + case QETH_LINK_TYPE_10GBIT_ETH: + return "OSD_10GIG"; + case QETH_LINK_TYPE_LANE_ETH100: + return "OSD_FE_LANE"; + case QETH_LINK_TYPE_LANE_TR: + return "OSD_TR_LANE"; + case QETH_LINK_TYPE_LANE_ETH1000: + return "OSD_GbE_LANE"; + case QETH_LINK_TYPE_LANE: + return "OSD_ATM_LANE"; + default: + return "OSD_Express"; + } + case QETH_CARD_TYPE_IQD: + return "HiperSockets"; + case QETH_CARD_TYPE_OSN: + return "OSN"; + case QETH_CARD_TYPE_OSM: + return "OSM_1000"; + case QETH_CARD_TYPE_OSX: + return "OSX_10GIG"; + default: + return "unknown"; + } + } + return "n/a"; +} + +void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, + int clear_start_mask) +{ + unsigned long flags; + + spin_lock_irqsave(&card->thread_mask_lock, flags); + card->thread_allowed_mask = threads; + if (clear_start_mask) + card->thread_start_mask &= threads; + spin_unlock_irqrestore(&card->thread_mask_lock, flags); + wake_up(&card->wait_q); +} +EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); + +int qeth_threads_running(struct qeth_card *card, unsigned long threads) +{ + unsigned long flags; + int rc = 0; + + spin_lock_irqsave(&card->thread_mask_lock, flags); + rc = (card->thread_running_mask & threads); + spin_unlock_irqrestore(&card->thread_mask_lock, flags); + return rc; +} +EXPORT_SYMBOL_GPL(qeth_threads_running); + +int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads) +{ + return wait_event_interruptible(card->wait_q, + qeth_threads_running(card, threads) == 0); +} +EXPORT_SYMBOL_GPL(qeth_wait_for_threads); + +void qeth_clear_working_pool_list(struct qeth_card *card) +{ + struct qeth_buffer_pool_entry *pool_entry, *tmp; + + QETH_CARD_TEXT(card, 5, "clwrklst"); + list_for_each_entry_safe(pool_entry, tmp, + &card->qdio.in_buf_pool.entry_list, list){ + list_del(&pool_entry->list); + } +} +EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list); + +static int qeth_alloc_buffer_pool(struct qeth_card *card) +{ + struct qeth_buffer_pool_entry *pool_entry; + void *ptr; + int i, j; + + QETH_CARD_TEXT(card, 5, "alocpool"); + for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { + pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL); + if (!pool_entry) { + qeth_free_buffer_pool(card); + return -ENOMEM; + } + for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) { + ptr = (void *) __get_free_page(GFP_KERNEL); + if (!ptr) { + while (j > 0) + free_page((unsigned long) + pool_entry->elements[--j]); + kfree(pool_entry); + qeth_free_buffer_pool(card); + return -ENOMEM; + } + pool_entry->elements[j] = ptr; + } + list_add(&pool_entry->init_list, + &card->qdio.init_pool.entry_list); + } + return 0; +} + +int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt) +{ + QETH_CARD_TEXT(card, 2, "realcbp"); + + if ((card->state != CARD_STATE_DOWN) && + (card->state != CARD_STATE_RECOVER)) + return -EPERM; + + /* 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); +} +EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool); + +static inline int qeth_cq_init(struct qeth_card *card) +{ + int rc; + + if (card->options.cq == QETH_CQ_ENABLED) { + QETH_DBF_TEXT(SETUP, 2, "cqinit"); + memset(card->qdio.c_q->qdio_bufs, 0, + QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer)); + card->qdio.c_q->next_buf_to_init = 127; + rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, + card->qdio.no_in_queues - 1, 0, + 127); + if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); + goto out; + } + } + rc = 0; +out: + return rc; +} + +static inline int qeth_alloc_cq(struct qeth_card *card) +{ + int rc; + + if (card->options.cq == QETH_CQ_ENABLED) { + int i; + struct qdio_outbuf_state *outbuf_states; + + QETH_DBF_TEXT(SETUP, 2, "cqon"); + card->qdio.c_q = kzalloc(sizeof(struct qeth_qdio_q), + GFP_KERNEL); + if (!card->qdio.c_q) { + rc = -1; + goto kmsg_out; + } + QETH_DBF_HEX(SETUP, 2, &card->qdio.c_q, sizeof(void *)); + + for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { + card->qdio.c_q->bufs[i].buffer = + &card->qdio.c_q->qdio_bufs[i]; + } + + card->qdio.no_in_queues = 2; + + card->qdio.out_bufstates = (struct qdio_outbuf_state *) + kzalloc(card->qdio.no_out_queues * + QDIO_MAX_BUFFERS_PER_Q * + sizeof(struct qdio_outbuf_state), GFP_KERNEL); + outbuf_states = card->qdio.out_bufstates; + if (outbuf_states == NULL) { + rc = -1; + goto free_cq_out; + } + for (i = 0; i < card->qdio.no_out_queues; ++i) { + card->qdio.out_qs[i]->bufstates = outbuf_states; + outbuf_states += QDIO_MAX_BUFFERS_PER_Q; + } + } else { + QETH_DBF_TEXT(SETUP, 2, "nocq"); + card->qdio.c_q = NULL; + card->qdio.no_in_queues = 1; + } + QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues); + rc = 0; +out: + return rc; +free_cq_out: + kfree(card->qdio.c_q); + card->qdio.c_q = NULL; +kmsg_out: + dev_err(&card->gdev->dev, "Failed to create completion queue\n"); + goto out; +} + +static inline void qeth_free_cq(struct qeth_card *card) +{ + if (card->qdio.c_q) { + --card->qdio.no_in_queues; + kfree(card->qdio.c_q); + card->qdio.c_q = NULL; + } + kfree(card->qdio.out_bufstates); + card->qdio.out_bufstates = NULL; +} + +static inline enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15, + int delayed) { + enum iucv_tx_notify n; + + switch (sbalf15) { + case 0: + n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK; + break; + case 4: + case 16: + case 17: + case 18: + n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE : + TX_NOTIFY_UNREACHABLE; + break; + default: + n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR : + TX_NOTIFY_GENERALERROR; + break; + } + + return n; +} + +static inline void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, + int bidx, int forced_cleanup) +{ + if (q->card->options.cq != QETH_CQ_ENABLED) + return; + + if (q->bufs[bidx]->next_pending != NULL) { + struct qeth_qdio_out_buffer *head = q->bufs[bidx]; + struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending; + + while (c) { + if (forced_cleanup || + atomic_read(&c->state) == + QETH_QDIO_BUF_HANDLED_DELAYED) { + struct qeth_qdio_out_buffer *f = c; + QETH_CARD_TEXT(f->q->card, 5, "fp"); + QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f); + /* release here to avoid interleaving between + outbound tasklet and inbound tasklet + regarding notifications and lifecycle */ + qeth_release_skbs(c); + + c = f->next_pending; + BUG_ON(head->next_pending != f); + head->next_pending = c; + kmem_cache_free(qeth_qdio_outbuf_cache, f); + } else { + head = c; + c = c->next_pending; + } + + } + } + if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) == + QETH_QDIO_BUF_HANDLED_DELAYED)) { + /* for recovery situations */ + q->bufs[bidx]->aob = q->bufstates[bidx].aob; + qeth_init_qdio_out_buf(q, bidx); + QETH_CARD_TEXT(q->card, 2, "clprecov"); + } +} + + +static inline void qeth_qdio_handle_aob(struct qeth_card *card, + unsigned long phys_aob_addr) { + struct qaob *aob; + struct qeth_qdio_out_buffer *buffer; + enum iucv_tx_notify notification; + + aob = (struct qaob *) phys_to_virt(phys_aob_addr); + QETH_CARD_TEXT(card, 5, "haob"); + QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr); + buffer = (struct qeth_qdio_out_buffer *) aob->user1; + QETH_CARD_TEXT_(card, 5, "%lx", aob->user1); + + BUG_ON(buffer == NULL); + + if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, + QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) { + notification = TX_NOTIFY_OK; + } else { + BUG_ON(atomic_read(&buffer->state) != QETH_QDIO_BUF_PENDING); + atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ); + notification = TX_NOTIFY_DELAYED_OK; + } + + if (aob->aorc != 0) { + QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc); + notification = qeth_compute_cq_notification(aob->aorc, 1); + } + qeth_notify_skbs(buffer->q, buffer, notification); + + buffer->aob = NULL; + qeth_clear_output_buffer(buffer->q, buffer, + QETH_QDIO_BUF_HANDLED_DELAYED); + + /* from here on: do not touch buffer anymore */ + qdio_release_aob(aob); +} + +static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue) +{ + return card->options.cq == QETH_CQ_ENABLED && + card->qdio.c_q != NULL && + queue != 0 && + queue == card->qdio.no_in_queues - 1; +} + + +static int qeth_issue_next_read(struct qeth_card *card) +{ + int rc; + struct qeth_cmd_buffer *iob; + + QETH_CARD_TEXT(card, 5, "issnxrd"); + if (card->read.state != CH_STATE_UP) + return -EIO; + iob = qeth_get_buffer(&card->read); + if (!iob) { + dev_warn(&card->gdev->dev, "The qeth device driver " + "failed to recover an error on the device\n"); + QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob " + "available\n", dev_name(&card->gdev->dev)); + return -ENOMEM; + } + qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE); + QETH_CARD_TEXT(card, 6, "noirqpnd"); + rc = ccw_device_start(card->read.ccwdev, &card->read.ccw, + (addr_t) iob, 0, 0); + if (rc) { + QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! " + "rc=%i\n", dev_name(&card->gdev->dev), rc); + atomic_set(&card->read.irq_pending, 0); + card->read_or_write_problem = 1; + qeth_schedule_recovery(card); + wake_up(&card->wait_q); + } + return rc; +} + +static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card) +{ + struct qeth_reply *reply; + + reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC); + if (reply) { + atomic_set(&reply->refcnt, 1); + atomic_set(&reply->received, 0); + reply->card = card; + }; + return reply; +} + +static void qeth_get_reply(struct qeth_reply *reply) +{ + WARN_ON(atomic_read(&reply->refcnt) <= 0); + atomic_inc(&reply->refcnt); +} + +static void qeth_put_reply(struct qeth_reply *reply) +{ + WARN_ON(atomic_read(&reply->refcnt) <= 0); + if (atomic_dec_and_test(&reply->refcnt)) + kfree(reply); +} + +static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, + struct qeth_card *card) +{ + char *ipa_name; + int com = cmd->hdr.command; + ipa_name = qeth_get_ipa_cmd_name(com); + if (rc) + QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned " + "x%X \"%s\"\n", + ipa_name, com, dev_name(&card->gdev->dev), + QETH_CARD_IFNAME(card), rc, + qeth_get_ipa_msg(rc)); + else + QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n", + ipa_name, com, dev_name(&card->gdev->dev), + QETH_CARD_IFNAME(card)); +} + +static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, + struct qeth_cmd_buffer *iob) +{ + struct qeth_ipa_cmd *cmd = NULL; + + QETH_CARD_TEXT(card, 5, "chkipad"); + if (IS_IPA(iob->data)) { + cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); + if (IS_IPA_REPLY(cmd)) { + if (cmd->hdr.command != IPA_CMD_SETCCID && + cmd->hdr.command != IPA_CMD_DELCCID && + cmd->hdr.command != IPA_CMD_MODCCID && + cmd->hdr.command != IPA_CMD_SET_DIAG_ASS) + qeth_issue_ipa_msg(cmd, + cmd->hdr.return_code, card); + return cmd; + } else { + switch (cmd->hdr.command) { + case IPA_CMD_STOPLAN: + dev_warn(&card->gdev->dev, + "The link for interface %s on CHPID" + " 0x%X failed\n", + QETH_CARD_IFNAME(card), + card->info.chpid); + card->lan_online = 0; + if (card->dev && netif_carrier_ok(card->dev)) + netif_carrier_off(card->dev); + return NULL; + case IPA_CMD_STARTLAN: + dev_info(&card->gdev->dev, + "The link for %s on CHPID 0x%X has" + " been restored\n", + QETH_CARD_IFNAME(card), + card->info.chpid); + netif_carrier_on(card->dev); + card->lan_online = 1; + if (card->info.hwtrap) + card->info.hwtrap = 2; + qeth_schedule_recovery(card); + return NULL; + case IPA_CMD_MODCCID: + return cmd; + case IPA_CMD_REGISTER_LOCAL_ADDR: + QETH_CARD_TEXT(card, 3, "irla"); + break; + case IPA_CMD_UNREGISTER_LOCAL_ADDR: + QETH_CARD_TEXT(card, 3, "urla"); + break; + default: + QETH_DBF_MESSAGE(2, "Received data is IPA " + "but not a reply!\n"); + break; + } + } + } + return cmd; +} + +void qeth_clear_ipacmd_list(struct qeth_card *card) +{ + struct qeth_reply *reply, *r; + unsigned long flags; + + QETH_CARD_TEXT(card, 4, "clipalst"); + + spin_lock_irqsave(&card->lock, flags); + list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { + qeth_get_reply(reply); + reply->rc = -EIO; + atomic_inc(&reply->received); + list_del_init(&reply->list); + wake_up(&reply->wait_q); + qeth_put_reply(reply); + } + spin_unlock_irqrestore(&card->lock, flags); + atomic_set(&card->write.irq_pending, 0); +} +EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); + +static int qeth_check_idx_response(struct qeth_card *card, + unsigned char *buffer) +{ + if (!buffer) + return 0; + + QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); + if ((buffer[2] & 0xc0) == 0xc0) { + QETH_DBF_MESSAGE(2, "received an IDX TERMINATE " + "with cause code 0x%02x%s\n", + buffer[4], + ((buffer[4] == 0x22) ? + " -- try another portname" : "")); + QETH_CARD_TEXT(card, 2, "ckidxres"); + QETH_CARD_TEXT(card, 2, " idxterm"); + QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); + if (buffer[4] == 0xf6) { + dev_err(&card->gdev->dev, + "The qeth device is not configured " + "for the OSI layer required by z/VM\n"); + return -EPERM; + } + return -EIO; + } + return 0; +} + +static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob, + __u32 len) +{ + struct qeth_card *card; + + card = CARD_FROM_CDEV(channel->ccwdev); + QETH_CARD_TEXT(card, 4, "setupccw"); + if (channel == &card->read) + memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); + else + memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); + channel->ccw.count = len; + channel->ccw.cda = (__u32) __pa(iob); +} + +static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) +{ + __u8 index; + + QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff"); + index = channel->io_buf_no; + do { + if (channel->iob[index].state == BUF_STATE_FREE) { + channel->iob[index].state = BUF_STATE_LOCKED; + channel->io_buf_no = (channel->io_buf_no + 1) % + QETH_CMD_BUFFER_NO; + memset(channel->iob[index].data, 0, QETH_BUFSIZE); + return channel->iob + index; + } + index = (index + 1) % QETH_CMD_BUFFER_NO; + } while (index != channel->io_buf_no); + + return NULL; +} + +void qeth_release_buffer(struct qeth_channel *channel, + struct qeth_cmd_buffer *iob) +{ + unsigned long flags; + + QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff"); + spin_lock_irqsave(&channel->iob_lock, flags); + memset(iob->data, 0, QETH_BUFSIZE); + iob->state = BUF_STATE_FREE; + iob->callback = qeth_send_control_data_cb; + iob->rc = 0; + spin_unlock_irqrestore(&channel->iob_lock, flags); + wake_up(&channel->wait_q); +} +EXPORT_SYMBOL_GPL(qeth_release_buffer); + +static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel) +{ + struct qeth_cmd_buffer *buffer = NULL; + unsigned long flags; + + spin_lock_irqsave(&channel->iob_lock, flags); + buffer = __qeth_get_buffer(channel); + spin_unlock_irqrestore(&channel->iob_lock, flags); + return buffer; +} + +struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel) +{ + struct qeth_cmd_buffer *buffer; + wait_event(channel->wait_q, + ((buffer = qeth_get_buffer(channel)) != NULL)); + return buffer; +} +EXPORT_SYMBOL_GPL(qeth_wait_for_buffer); + +void qeth_clear_cmd_buffers(struct qeth_channel *channel) +{ + int cnt; + + for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) + qeth_release_buffer(channel, &channel->iob[cnt]); + channel->buf_no = 0; + channel->io_buf_no = 0; +} +EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); + +static void qeth_send_control_data_cb(struct qeth_channel *channel, + struct qeth_cmd_buffer *iob) +{ + struct qeth_card *card; + struct qeth_reply *reply, *r; + struct qeth_ipa_cmd *cmd; + unsigned long flags; + int keep_reply; + int rc = 0; + + card = CARD_FROM_CDEV(channel->ccwdev); + QETH_CARD_TEXT(card, 4, "sndctlcb"); + rc = qeth_check_idx_response(card, iob->data); + switch (rc) { + case 0: + break; + case -EIO: + qeth_clear_ipacmd_list(card); + qeth_schedule_recovery(card); + /* fall through */ + default: + 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 = + kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL); + if (channel->iob[cnt].data == NULL) + break; + channel->iob[cnt].state = BUF_STATE_FREE; + channel->iob[cnt].channel = channel; + channel->iob[cnt].callback = qeth_send_control_data_cb; + channel->iob[cnt].rc = 0; + } + if (cnt < QETH_CMD_BUFFER_NO) { + while (cnt-- > 0) + kfree(channel->iob[cnt].data); + return -ENOMEM; + } + channel->buf_no = 0; + channel->io_buf_no = 0; + atomic_set(&channel->irq_pending, 0); + spin_lock_init(&channel->iob_lock); + + init_waitqueue_head(&channel->wait_q); + return 0; +} + +static int qeth_set_thread_start_bit(struct qeth_card *card, + unsigned long thread) +{ + unsigned long flags; + + spin_lock_irqsave(&card->thread_mask_lock, flags); + if (!(card->thread_allowed_mask & thread) || + (card->thread_start_mask & thread)) { + spin_unlock_irqrestore(&card->thread_mask_lock, flags); + return -EPERM; + } + card->thread_start_mask |= thread; + spin_unlock_irqrestore(&card->thread_mask_lock, flags); + return 0; +} + +void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) +{ + unsigned long flags; + + spin_lock_irqsave(&card->thread_mask_lock, flags); + card->thread_start_mask &= ~thread; + spin_unlock_irqrestore(&card->thread_mask_lock, flags); + wake_up(&card->wait_q); +} +EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); + +void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) +{ + unsigned long flags; + + spin_lock_irqsave(&card->thread_mask_lock, flags); + card->thread_running_mask &= ~thread; + spin_unlock_irqrestore(&card->thread_mask_lock, flags); + wake_up(&card->wait_q); +} +EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); + +static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) +{ + unsigned long flags; + int rc = 0; + + spin_lock_irqsave(&card->thread_mask_lock, flags); + if (card->thread_start_mask & thread) { + if ((card->thread_allowed_mask & thread) && + !(card->thread_running_mask & thread)) { + rc = 1; + card->thread_start_mask &= ~thread; + card->thread_running_mask |= thread; + } else + rc = -EPERM; + } + spin_unlock_irqrestore(&card->thread_mask_lock, flags); + return rc; +} + +int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) +{ + int rc = 0; + + wait_event(card->wait_q, + (rc = __qeth_do_run_thread(card, thread)) >= 0); + return rc; +} +EXPORT_SYMBOL_GPL(qeth_do_run_thread); + +void qeth_schedule_recovery(struct qeth_card *card) +{ + QETH_CARD_TEXT(card, 2, "startrec"); + if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) + schedule_work(&card->kernel_thread_starter); +} +EXPORT_SYMBOL_GPL(qeth_schedule_recovery); + +static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) +{ + int dstat, cstat; + char *sense; + struct qeth_card *card; + + sense = (char *) irb->ecw; + cstat = irb->scsw.cmd.cstat; + dstat = irb->scsw.cmd.dstat; + card = CARD_FROM_CDEV(cdev); + + if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | + SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | + SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { + QETH_CARD_TEXT(card, 2, "CGENCHK"); + dev_warn(&cdev->dev, "The qeth device driver " + "failed to recover an error on the device\n"); + QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n", + dev_name(&cdev->dev), dstat, cstat); + print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, + 16, 1, irb, 64, 1); + return 1; + } + + if (dstat & DEV_STAT_UNIT_CHECK) { + if (sense[SENSE_RESETTING_EVENT_BYTE] & + SENSE_RESETTING_EVENT_FLAG) { + QETH_CARD_TEXT(card, 2, "REVIND"); + return 1; + } + if (sense[SENSE_COMMAND_REJECT_BYTE] & + SENSE_COMMAND_REJECT_FLAG) { + QETH_CARD_TEXT(card, 2, "CMDREJi"); + return 1; + } + if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { + QETH_CARD_TEXT(card, 2, "AFFE"); + return 1; + } + if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { + QETH_CARD_TEXT(card, 2, "ZEROSEN"); + return 0; + } + QETH_CARD_TEXT(card, 2, "DGENCHK"); + return 1; + } + return 0; +} + +static long __qeth_check_irb_error(struct ccw_device *cdev, + unsigned long intparm, struct irb *irb) +{ + struct qeth_card *card; + + card = CARD_FROM_CDEV(cdev); + + if (!IS_ERR(irb)) + return 0; + + switch (PTR_ERR(irb)) { + case -EIO: + QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", + dev_name(&cdev->dev)); + QETH_CARD_TEXT(card, 2, "ckirberr"); + QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); + break; + case -ETIMEDOUT: + dev_warn(&cdev->dev, "A hardware operation timed out" + " on the device\n"); + QETH_CARD_TEXT(card, 2, "ckirberr"); + QETH_CARD_TEXT_(card, 2, " rc%d", -ETIMEDOUT); + if (intparm == QETH_RCD_PARM) { + if (card && (card->data.ccwdev == cdev)) { + card->data.state = CH_STATE_DOWN; + wake_up(&card->wait_q); + } + } + break; + default: + QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", + dev_name(&cdev->dev), PTR_ERR(irb)); + QETH_CARD_TEXT(card, 2, "ckirberr"); + QETH_CARD_TEXT(card, 2, " rc???"); + } + return PTR_ERR(irb); +} + +static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, + struct irb *irb) +{ + int rc; + int cstat, dstat; + struct qeth_cmd_buffer *buffer; + struct qeth_channel *channel; + struct qeth_card *card; + struct qeth_cmd_buffer *iob; + __u8 index; + + if (__qeth_check_irb_error(cdev, intparm, irb)) + return; + cstat = irb->scsw.cmd.cstat; + dstat = irb->scsw.cmd.dstat; + + card = CARD_FROM_CDEV(cdev); + if (!card) + return; + + QETH_CARD_TEXT(card, 5, "irq"); + + if (card->read.ccwdev == cdev) { + channel = &card->read; + QETH_CARD_TEXT(card, 5, "read"); + } else if (card->write.ccwdev == cdev) { + channel = &card->write; + QETH_CARD_TEXT(card, 5, "write"); + } else { + channel = &card->data; + QETH_CARD_TEXT(card, 5, "data"); + } + atomic_set(&channel->irq_pending, 0); + + if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) + channel->state = CH_STATE_STOPPED; + + if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) + channel->state = CH_STATE_HALTED; + + /*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_CARD_TEXT(card, 6, "clrchpar"); + /* we don't have to handle this further */ + intparm = 0; + } + if (intparm == QETH_HALT_CHANNEL_PARM) { + QETH_CARD_TEXT(card, 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) { + dev_warn(&channel->ccwdev->dev, + "The qeth device driver failed to recover " + "an error on the device\n"); + QETH_DBF_MESSAGE(2, "%s sense data available. cstat " + "0x%X dstat 0x%X\n", + dev_name(&channel->ccwdev->dev), cstat, dstat); + print_hex_dump(KERN_WARNING, "qeth: irb ", + DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); + print_hex_dump(KERN_WARNING, "qeth: sense data ", + DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); + } + if (intparm == QETH_RCD_PARM) { + channel->state = CH_STATE_DOWN; + goto out; + } + rc = qeth_get_problem(cdev, irb); + if (rc) { + qeth_clear_ipacmd_list(card); + qeth_schedule_recovery(card); + goto out; + } + } + + if (intparm == QETH_RCD_PARM) { + channel->state = CH_STATE_RCD_DONE; + goto out; + } + if (intparm) { + buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm); + buffer->state = BUF_STATE_PROCESSED; + } + if (channel == &card->data) + return; + if (channel == &card->read && + channel->state == CH_STATE_UP) + qeth_issue_next_read(card); + + iob = channel->iob; + index = channel->buf_no; + while (iob[index].state == BUF_STATE_PROCESSED) { + if (iob[index].callback != NULL) + iob[index].callback(channel, iob + index); + + index = (index + 1) % QETH_CMD_BUFFER_NO; + } + channel->buf_no = index; +out: + wake_up(&card->wait_q); + return; +} + +static void qeth_notify_skbs(struct qeth_qdio_out_q *q, + struct qeth_qdio_out_buffer *buf, + enum iucv_tx_notify notification) +{ + struct sk_buff *skb; + + if (skb_queue_empty(&buf->skb_list)) + goto out; + skb = skb_peek(&buf->skb_list); + while (skb) { + QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); + QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); + if (skb->protocol == ETH_P_AF_IUCV) { + if (skb->sk) { + struct iucv_sock *iucv = iucv_sk(skb->sk); + iucv->sk_txnotify(skb, notification); + } + } + if (skb_queue_is_last(&buf->skb_list, skb)) + skb = NULL; + else + skb = skb_queue_next(&buf->skb_list, skb); + } +out: + return; +} + +static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf) +{ + struct sk_buff *skb; + struct iucv_sock *iucv; + int notify_general_error = 0; + + if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) + notify_general_error = 1; + + /* release may never happen from within CQ tasklet scope */ + BUG_ON(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); + + skb = skb_dequeue(&buf->skb_list); + while (skb) { + QETH_CARD_TEXT(buf->q->card, 5, "skbr"); + QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb); + if (notify_general_error && skb->protocol == ETH_P_AF_IUCV) { + if (skb->sk) { + iucv = iucv_sk(skb->sk); + iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR); + } + } + atomic_dec(&skb->users); + dev_kfree_skb_any(skb); + skb = skb_dequeue(&buf->skb_list); + } +} + +static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, + struct qeth_qdio_out_buffer *buf, + enum qeth_qdio_buffer_states newbufstate) +{ + int i; + + /* is PCI flag set on buffer? */ + if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ) + atomic_dec(&queue->set_pci_flags_count); + + if (newbufstate == QETH_QDIO_BUF_EMPTY) { + qeth_release_skbs(buf); + } + for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) { + if (buf->buffer->element[i].addr && buf->is_header[i]) + kmem_cache_free(qeth_core_header_cache, + buf->buffer->element[i].addr); + buf->is_header[i] = 0; + buf->buffer->element[i].length = 0; + buf->buffer->element[i].addr = NULL; + buf->buffer->element[i].eflags = 0; + buf->buffer->element[i].sflags = 0; + } + buf->buffer->element[15].eflags = 0; + buf->buffer->element[15].sflags = 0; + buf->next_element_to_fill = 0; + atomic_set(&buf->state, newbufstate); +} + +static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free) +{ + int j; + + for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { + if (!q->bufs[j]) + continue; + qeth_cleanup_handled_pending(q, j, 1); + qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY); + if (free) { + kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); + q->bufs[j] = NULL; + } + } +} + +void qeth_clear_qdio_buffers(struct qeth_card *card) +{ + int i; + + QETH_CARD_TEXT(card, 2, "clearqdbf"); + /* clear outbound buffers to free skbs */ + for (i = 0; i < card->qdio.no_out_queues; ++i) { + if (card->qdio.out_qs[i]) { + qeth_clear_outq_buffers(card->qdio.out_qs[i], 0); + } + } +} +EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers); + +static void qeth_free_buffer_pool(struct qeth_card *card) +{ + struct qeth_buffer_pool_entry *pool_entry, *tmp; + int i = 0; + list_for_each_entry_safe(pool_entry, tmp, + &card->qdio.init_pool.entry_list, init_list){ + for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) + free_page((unsigned long)pool_entry->elements[i]); + list_del(&pool_entry->init_list); + kfree(pool_entry); + } +} + +static void qeth_free_qdio_buffers(struct qeth_card *card) +{ + int i, j; + + if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == + QETH_QDIO_UNINITIALIZED) + return; + + qeth_free_cq(card); + cancel_delayed_work_sync(&card->buffer_reclaim_work); + for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) + dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); + kfree(card->qdio.in_q); + card->qdio.in_q = NULL; + /* 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) { + qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); + kfree(card->qdio.out_qs[i]); + } + kfree(card->qdio.out_qs); + card->qdio.out_qs = NULL; + } +} + +static void qeth_clean_channel(struct qeth_channel *channel) +{ + int cnt; + + QETH_DBF_TEXT(SETUP, 2, "freech"); + for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) + kfree(channel->iob[cnt].data); +} + +static void qeth_get_channel_path_desc(struct qeth_card *card) +{ + struct ccw_device *ccwdev; + struct channelPath_dsc { + u8 flags; + u8 lsn; + u8 desc; + u8 chpid; + u8 swla; + u8 zeroes; + u8 chla; + u8 chpp; + } *chp_dsc; + + QETH_DBF_TEXT(SETUP, 2, "chp_desc"); + + ccwdev = card->data.ccwdev; + chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0); + if (chp_dsc != NULL) { + if (card->info.type != QETH_CARD_TYPE_IQD) { + /* CHPP field bit 6 == 1 -> single queue */ + if ((chp_dsc->chpp & 0x02) == 0x02) { + if ((atomic_read(&card->qdio.state) != + QETH_QDIO_UNINITIALIZED) && + (card->qdio.no_out_queues == 4)) + /* change from 4 to 1 outbound queues */ + qeth_free_qdio_buffers(card); + card->qdio.no_out_queues = 1; + if (card->qdio.default_out_queue != 0) + dev_info(&card->gdev->dev, + "Priority Queueing not supported\n"); + card->qdio.default_out_queue = 0; + } else { + if ((atomic_read(&card->qdio.state) != + QETH_QDIO_UNINITIALIZED) && + (card->qdio.no_out_queues == 1)) { + /* change from 1 to 4 outbound queues */ + qeth_free_qdio_buffers(card); + card->qdio.default_out_queue = 2; + } + card->qdio.no_out_queues = 4; + } + } + card->info.func_level = 0x4100 + chp_dsc->desc; + kfree(chp_dsc); + } + QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues); + QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level); + return; +} + +static void qeth_init_qdio_info(struct qeth_card *card) +{ + QETH_DBF_TEXT(SETUP, 4, "intqdinf"); + atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); + /* inbound */ + card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; + if (card->info.type == QETH_CARD_TYPE_IQD) + card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT; + else + card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; + card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; + INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); + INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); +} + +static void qeth_set_intial_options(struct qeth_card *card) +{ + card->options.route4.type = NO_ROUTER; + card->options.route6.type = NO_ROUTER; + card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS; + card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL; + card->options.fake_broadcast = 0; + card->options.add_hhlen = DEFAULT_ADD_HHLEN; + card->options.performance_stats = 0; + card->options.rx_sg_cb = QETH_RX_SG_CB; + card->options.isolation = ISOLATION_MODE_NONE; + card->options.cq = QETH_CQ_DISABLED; +} + +static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) +{ + unsigned long flags; + int rc = 0; + + spin_lock_irqsave(&card->thread_mask_lock, flags); + QETH_CARD_TEXT_(card, 4, " %02x%02x%02x", + (u8) card->thread_start_mask, + (u8) card->thread_allowed_mask, + (u8) card->thread_running_mask); + rc = (card->thread_start_mask & thread); + spin_unlock_irqrestore(&card->thread_mask_lock, flags); + return rc; +} + +static void qeth_start_kernel_thread(struct work_struct *work) +{ + struct task_struct *ts; + struct qeth_card *card = container_of(work, struct qeth_card, + kernel_thread_starter); + QETH_CARD_TEXT(card , 2, "strthrd"); + + if (card->read.state != CH_STATE_UP && + card->write.state != CH_STATE_UP) + return; + if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) { + ts = kthread_run(card->discipline.recover, (void *)card, + "qeth_recover"); + if (IS_ERR(ts)) { + qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); + qeth_clear_thread_running_bit(card, + QETH_RECOVER_THREAD); + } + } +} + +static int qeth_setup_card(struct qeth_card *card) +{ + + QETH_DBF_TEXT(SETUP, 2, "setupcrd"); + QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); + + card->read.state = CH_STATE_DOWN; + card->write.state = CH_STATE_DOWN; + card->data.state = CH_STATE_DOWN; + card->state = CARD_STATE_DOWN; + card->lan_online = 0; + card->read_or_write_problem = 0; + card->dev = NULL; + spin_lock_init(&card->vlanlock); + spin_lock_init(&card->mclock); + spin_lock_init(&card->lock); + spin_lock_init(&card->ip_lock); + spin_lock_init(&card->thread_mask_lock); + mutex_init(&card->conf_mutex); + mutex_init(&card->discipline_mutex); + card->thread_start_mask = 0; + card->thread_allowed_mask = 0; + card->thread_running_mask = 0; + INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); + INIT_LIST_HEAD(&card->ip_list); + INIT_LIST_HEAD(card->ip_tbd_list); + INIT_LIST_HEAD(&card->cmd_waiter_list); + init_waitqueue_head(&card->wait_q); + /* initial 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); + INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work); + return 0; +} + +static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) +{ + struct qeth_card *card = container_of(slr, struct qeth_card, + qeth_service_level); + if (card->info.mcl_level[0]) + seq_printf(m, "qeth: %s firmware level %s\n", + CARD_BUS_ID(card), card->info.mcl_level); +} + +static struct qeth_card *qeth_alloc_card(void) +{ + struct qeth_card *card; + + QETH_DBF_TEXT(SETUP, 2, "alloccrd"); + card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL); + if (!card) + goto out; + QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); + card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_KERNEL); + if (!card->ip_tbd_list) { + QETH_DBF_TEXT(SETUP, 0, "iptbdnom"); + goto out_card; + } + if (qeth_setup_channel(&card->read)) + goto out_ip; + if (qeth_setup_channel(&card->write)) + goto out_channel; + card->options.layer2 = -1; + card->qeth_service_level.seq_print = qeth_core_sl_print; + register_service_level(&card->qeth_service_level); + return card; + +out_channel: + qeth_clean_channel(&card->read); +out_ip: + kfree(card->ip_tbd_list); +out_card: + kfree(card); +out: + return NULL; +} + +static int qeth_determine_card_type(struct qeth_card *card) +{ + int i = 0; + + QETH_DBF_TEXT(SETUP, 2, "detcdtyp"); + + card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; + card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; + while (known_devices[i][QETH_DEV_MODEL_IND]) { + if ((CARD_RDEV(card)->id.dev_type == + known_devices[i][QETH_DEV_TYPE_IND]) && + (CARD_RDEV(card)->id.dev_model == + known_devices[i][QETH_DEV_MODEL_IND])) { + card->info.type = known_devices[i][QETH_DEV_MODEL_IND]; + card->qdio.no_out_queues = + known_devices[i][QETH_QUEUE_NO_IND]; + card->qdio.no_in_queues = 1; + card->info.is_multicast_different = + known_devices[i][QETH_MULTICAST_IND]; + qeth_get_channel_path_desc(card); + return 0; + } + i++; + } + card->info.type = QETH_CARD_TYPE_UNKNOWN; + dev_err(&card->gdev->dev, "The adapter hardware is of an " + "unknown type\n"); + return -ENOENT; +} + +static int qeth_clear_channel(struct qeth_channel *channel) +{ + unsigned long flags; + struct qeth_card *card; + int rc; + + card = CARD_FROM_CDEV(channel->ccwdev); + QETH_CARD_TEXT(card, 3, "clearch"); + spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); + rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); + spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); + + if (rc) + return rc; + rc = wait_event_interruptible_timeout(card->wait_q, + channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); + if (rc == -ERESTARTSYS) + return rc; + if (channel->state != CH_STATE_STOPPED) + return -ETIME; + channel->state = CH_STATE_DOWN; + return 0; +} + +static int qeth_halt_channel(struct qeth_channel *channel) +{ + unsigned long flags; + struct qeth_card *card; + int rc; + + card = CARD_FROM_CDEV(channel->ccwdev); + QETH_CARD_TEXT(card, 3, "haltch"); + spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); + rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); + spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); + + if (rc) + return rc; + rc = wait_event_interruptible_timeout(card->wait_q, + channel->state == CH_STATE_HALTED, QETH_TIMEOUT); + if (rc == -ERESTARTSYS) + return rc; + if (channel->state != CH_STATE_HALTED) + return -ETIME; + return 0; +} + +static int qeth_halt_channels(struct qeth_card *card) +{ + int rc1 = 0, rc2 = 0, rc3 = 0; + + QETH_CARD_TEXT(card, 3, "haltchs"); + rc1 = qeth_halt_channel(&card->read); + rc2 = qeth_halt_channel(&card->write); + rc3 = qeth_halt_channel(&card->data); + if (rc1) + return rc1; + if (rc2) + return rc2; + return rc3; +} + +static int qeth_clear_channels(struct qeth_card *card) +{ + int rc1 = 0, rc2 = 0, rc3 = 0; + + QETH_CARD_TEXT(card, 3, "clearchs"); + rc1 = qeth_clear_channel(&card->read); + rc2 = qeth_clear_channel(&card->write); + rc3 = qeth_clear_channel(&card->data); + if (rc1) + return rc1; + if (rc2) + return rc2; + return rc3; +} + +static int qeth_clear_halt_card(struct qeth_card *card, int halt) +{ + int rc = 0; + + QETH_CARD_TEXT(card, 3, "clhacrd"); + + if (halt) + rc = qeth_halt_channels(card); + if (rc) + return rc; + return qeth_clear_channels(card); +} + +int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) +{ + int rc = 0; + + QETH_CARD_TEXT(card, 3, "qdioclr"); + switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, + QETH_QDIO_CLEANING)) { + case QETH_QDIO_ESTABLISHED: + if (card->info.type == QETH_CARD_TYPE_IQD) + rc = qdio_shutdown(CARD_DDEV(card), + QDIO_FLAG_CLEANUP_USING_HALT); + else + rc = qdio_shutdown(CARD_DDEV(card), + QDIO_FLAG_CLEANUP_USING_CLEAR); + if (rc) + QETH_CARD_TEXT_(card, 3, "1err%d", rc); + qdio_free(CARD_DDEV(card)); + atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); + break; + case QETH_QDIO_CLEANING: + return rc; + default: + break; + } + rc = qeth_clear_halt_card(card, use_halt); + if (rc) + QETH_CARD_TEXT_(card, 3, "2err%d", rc); + card->state = CARD_STATE_DOWN; + return rc; +} +EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); + +static int qeth_read_conf_data(struct qeth_card *card, void **buffer, + int *length) +{ + struct ciw *ciw; + char *rcd_buf; + int ret; + struct qeth_channel *channel = &card->data; + unsigned long flags; + + /* + * 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 void qeth_configure_unitaddr(struct qeth_card *card, char *prcd) +{ + QETH_DBF_TEXT(SETUP, 2, "cfgunit"); + card->info.chpid = prcd[30]; + card->info.unit_addr2 = prcd[31]; + card->info.cula = prcd[63]; + card->info.guestlan = ((prcd[0x10] == _ascebc['V']) && + (prcd[0x11] == _ascebc['M'])); +} + +static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd) +{ + QETH_DBF_TEXT(SETUP, 2, "cfgblkt"); + + if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && + (prcd[76] == 0xF5 || prcd[76] == 0xF6)) { + card->info.blkt.time_total = 250; + card->info.blkt.inter_packet = 5; + card->info.blkt.inter_packet_jumbo = 15; + } else { + card->info.blkt.time_total = 0; + card->info.blkt.inter_packet = 0; + card->info.blkt.inter_packet_jumbo = 0; + } +} + +static void qeth_init_tokens(struct qeth_card *card) +{ + card->token.issuer_rm_w = 0x00010103UL; + card->token.cm_filter_w = 0x00010108UL; + card->token.cm_connection_w = 0x0001010aUL; + card->token.ulp_filter_w = 0x0001010bUL; + card->token.ulp_connection_w = 0x0001010dUL; +} + +static void qeth_init_func_level(struct qeth_card *card) +{ + switch (card->info.type) { + case QETH_CARD_TYPE_IQD: + card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD; + break; + case QETH_CARD_TYPE_OSD: + case QETH_CARD_TYPE_OSN: + card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD; + break; + default: + break; + } +} + +static int qeth_idx_activate_get_answer(struct qeth_channel *channel, + void (*idx_reply_cb)(struct qeth_channel *, + struct qeth_cmd_buffer *)) +{ + struct qeth_cmd_buffer *iob; + unsigned long flags; + int rc; + struct qeth_card *card; + + QETH_DBF_TEXT(SETUP, 2, "idxanswr"); + card = CARD_FROM_CDEV(channel->ccwdev); + iob = qeth_get_buffer(channel); + iob->callback = idx_reply_cb; + memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); + channel->ccw.count = QETH_BUFSIZE; + channel->ccw.cda = (__u32) __pa(iob->data); + + wait_event(card->wait_q, + atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); + QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); + spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); + rc = ccw_device_start(channel->ccwdev, + &channel->ccw, (addr_t) iob, 0, 0); + spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); + + if (rc) { + QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); + QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); + atomic_set(&channel->irq_pending, 0); + wake_up(&card->wait_q); + return rc; + } + rc = wait_event_interruptible_timeout(card->wait_q, + channel->state == CH_STATE_UP, QETH_TIMEOUT); + if (rc == -ERESTARTSYS) + return rc; + if (channel->state != CH_STATE_UP) { + rc = -ETIME; + QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); + qeth_clear_cmd_buffers(channel); + } else + rc = 0; + return rc; +} + +static int qeth_idx_activate_channel(struct qeth_channel *channel, + void (*idx_reply_cb)(struct qeth_channel *, + struct qeth_cmd_buffer *)) +{ + struct qeth_card *card; + struct qeth_cmd_buffer *iob; + unsigned long flags; + __u16 temp; + __u8 tmp; + int rc; + struct ccw_dev_id temp_devid; + + card = CARD_FROM_CDEV(channel->ccwdev); + + QETH_DBF_TEXT(SETUP, 2, "idxactch"); + + iob = qeth_get_buffer(channel); + iob->callback = idx_reply_cb; + memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); + channel->ccw.count = IDX_ACTIVATE_SIZE; + channel->ccw.cda = (__u32) __pa(iob->data); + if (channel == &card->write) { + memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); + memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), + &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); + card->seqno.trans_hdr++; + } else { + memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); + memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), + &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); + } + tmp = ((__u8)card->info.portno) | 0x80; + memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1); + memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), + &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); + memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), + &card->info.func_level, sizeof(__u16)); + ccw_device_get_id(CARD_DDEV(card), &temp_devid); + memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); + temp = (card->info.cula << 8) + card->info.unit_addr2; + memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); + + wait_event(card->wait_q, + atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); + QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); + spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); + rc = ccw_device_start(channel->ccwdev, + &channel->ccw, (addr_t) iob, 0, 0); + spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); + + if (rc) { + QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", + rc); + QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); + atomic_set(&channel->irq_pending, 0); + wake_up(&card->wait_q); + return rc; + } + rc = wait_event_interruptible_timeout(card->wait_q, + channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT); + if (rc == -ERESTARTSYS) + return rc; + if (channel->state != CH_STATE_ACTIVATING) { + dev_warn(&channel->ccwdev->dev, "The qeth device driver" + " failed to recover an error on the device\n"); + QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", + dev_name(&channel->ccwdev->dev)); + QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); + qeth_clear_cmd_buffers(channel); + return -ETIME; + } + return qeth_idx_activate_get_answer(channel, idx_reply_cb); +} + +static int qeth_peer_func_level(int level) +{ + if ((level & 0xff) == 8) + return (level & 0xff) + 0x400; + if (((level >> 8) & 3) == 1) + return (level & 0xff) + 0x200; + return level; +} + +static void qeth_idx_write_cb(struct qeth_channel *channel, + struct qeth_cmd_buffer *iob) +{ + struct qeth_card *card; + __u16 temp; + + QETH_DBF_TEXT(SETUP , 2, "idxwrcb"); + + if (channel->state == CH_STATE_DOWN) { + channel->state = CH_STATE_ACTIVATING; + goto out; + } + card = CARD_FROM_CDEV(channel->ccwdev); + + if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { + if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL) + dev_err(&card->write.ccwdev->dev, + "The adapter is used exclusively by another " + "host\n"); + else + QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" + " negative reply\n", + dev_name(&card->write.ccwdev->dev)); + goto out; + } + memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); + if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { + QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " + "function level mismatch (sent: 0x%x, received: " + "0x%x)\n", dev_name(&card->write.ccwdev->dev), + card->info.func_level, temp); + goto out; + } + channel->state = CH_STATE_UP; +out: + qeth_release_buffer(channel, iob); +} + +static void qeth_idx_read_cb(struct qeth_channel *channel, + struct qeth_cmd_buffer *iob) +{ + struct qeth_card *card; + __u16 temp; + + QETH_DBF_TEXT(SETUP , 2, "idxrdcb"); + if (channel->state == CH_STATE_DOWN) { + channel->state = CH_STATE_ACTIVATING; + goto out; + } + + card = CARD_FROM_CDEV(channel->ccwdev); + if (qeth_check_idx_response(card, iob->data)) + goto out; + + if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { + switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { + case QETH_IDX_ACT_ERR_EXCL: + dev_err(&card->write.ccwdev->dev, + "The adapter is used exclusively by another " + "host\n"); + break; + case QETH_IDX_ACT_ERR_AUTH: + case QETH_IDX_ACT_ERR_AUTH_USER: + dev_err(&card->read.ccwdev->dev, + "Setting the device online failed because of " + "insufficient authorization\n"); + break; + default: + QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" + " negative reply\n", + dev_name(&card->read.ccwdev->dev)); + } + QETH_CARD_TEXT_(card, 2, "idxread%c", + QETH_IDX_ACT_CAUSE_CODE(iob->data)); + goto out; + } + +/** + * * 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_OSD)) + card->info.portname_required = 1; + + memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); + if (temp != qeth_peer_func_level(card->info.func_level)) { + QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " + "level mismatch (sent: 0x%x, received: 0x%x)\n", + dev_name(&card->read.ccwdev->dev), + card->info.func_level, temp); + goto out; + } + memcpy(&card->token.issuer_rm_r, + QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), + QETH_MPC_TOKEN_LENGTH); + memcpy(&card->info.mcl_level[0], + QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); + channel->state = CH_STATE_UP; +out: + qeth_release_buffer(channel, iob); +} + +void qeth_prepare_control_data(struct qeth_card *card, int len, + struct qeth_cmd_buffer *iob) +{ + qeth_setup_ccw(&card->write, iob->data, len); + iob->callback = qeth_release_buffer; + + memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), + &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); + card->seqno.trans_hdr++; + memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), + &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); + card->seqno.pdu_hdr++; + memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), + &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); + QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); +} +EXPORT_SYMBOL_GPL(qeth_prepare_control_data); + +int qeth_send_control_data(struct qeth_card *card, int len, + struct qeth_cmd_buffer *iob, + int (*reply_cb)(struct qeth_card *, struct qeth_reply *, + unsigned long), + void *reply_param) +{ + int rc; + unsigned long flags; + struct qeth_reply *reply = NULL; + unsigned long timeout, event_timeout; + struct qeth_ipa_cmd *cmd; + + QETH_CARD_TEXT(card, 2, "sendctl"); + + if (card->read_or_write_problem) { + qeth_release_buffer(iob->channel, iob); + return -EIO; + } + reply = qeth_alloc_reply(card); + if (!reply) { + return -ENOMEM; + } + reply->callback = reply_cb; + reply->param = reply_param; + if (card->state == CARD_STATE_DOWN) + reply->seqno = QETH_IDX_COMMAND_SEQNO; + else + reply->seqno = card->seqno.ipa++; + init_waitqueue_head(&reply->wait_q); + spin_lock_irqsave(&card->lock, flags); + list_add_tail(&reply->list, &card->cmd_waiter_list); + spin_unlock_irqrestore(&card->lock, flags); + QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); + + while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ; + qeth_prepare_control_data(card, len, iob); + + if (IS_IPA(iob->data)) + event_timeout = QETH_IPA_TIMEOUT; + else + event_timeout = QETH_TIMEOUT; + timeout = jiffies + event_timeout; + + QETH_CARD_TEXT(card, 6, "noirqpnd"); + spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); + rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, + (addr_t) iob, 0, 0); + spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); + if (rc) { + QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " + "ccw_device_start rc = %i\n", + dev_name(&card->write.ccwdev->dev), rc); + QETH_CARD_TEXT_(card, 2, " err%d", rc); + spin_lock_irqsave(&card->lock, flags); + list_del_init(&reply->list); + qeth_put_reply(reply); + spin_unlock_irqrestore(&card->lock, flags); + qeth_release_buffer(iob->channel, iob); + atomic_set(&card->write.irq_pending, 0); + wake_up(&card->wait_q); + return rc; + } + + /* we have only one long running ipassist, since we can ensure + process context of this command we can sleep */ + cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); + if ((cmd->hdr.command == IPA_CMD_SETIP) && + (cmd->hdr.prot_version == QETH_PROT_IPV4)) { + if (!wait_event_timeout(reply->wait_q, + atomic_read(&reply->received), event_timeout)) + goto time_err; + } else { + while (!atomic_read(&reply->received)) { + if (time_after(jiffies, timeout)) + goto time_err; + cpu_relax(); + }; + } + + if (reply->rc == -EIO) + goto error; + rc = reply->rc; + qeth_put_reply(reply); + return rc; + +time_err: + reply->rc = -ETIME; + spin_lock_irqsave(&reply->card->lock, flags); + list_del_init(&reply->list); + spin_unlock_irqrestore(&reply->card->lock, flags); + atomic_inc(&reply->received); +error: + atomic_set(&card->write.irq_pending, 0); + qeth_release_buffer(iob->channel, iob); + card->write.buf_no = (card->write.buf_no + 1) % QETH_CMD_BUFFER_NO; + rc = reply->rc; + qeth_put_reply(reply); + return rc; +} +EXPORT_SYMBOL_GPL(qeth_send_control_data); + +static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, + unsigned long data) +{ + struct qeth_cmd_buffer *iob; + + QETH_DBF_TEXT(SETUP, 2, "cmenblcb"); + + iob = (struct qeth_cmd_buffer *) data; + memcpy(&card->token.cm_filter_r, + QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), + QETH_MPC_TOKEN_LENGTH); + QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); + return 0; +} + +static int qeth_cm_enable(struct qeth_card *card) +{ + int rc; + struct qeth_cmd_buffer *iob; + + QETH_DBF_TEXT(SETUP, 2, "cmenable"); + + iob = qeth_wait_for_buffer(&card->write); + memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE); + memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), + &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); + memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), + &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); + + rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob, + qeth_cm_enable_cb, NULL); + return rc; +} + +static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, + unsigned long data) +{ + + struct qeth_cmd_buffer *iob; + + QETH_DBF_TEXT(SETUP, 2, "cmsetpcb"); + + iob = (struct qeth_cmd_buffer *) data; + memcpy(&card->token.cm_connection_r, + QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), + QETH_MPC_TOKEN_LENGTH); + QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); + return 0; +} + +static int qeth_cm_setup(struct qeth_card *card) +{ + int rc; + struct qeth_cmd_buffer *iob; + + QETH_DBF_TEXT(SETUP, 2, "cmsetup"); + + iob = qeth_wait_for_buffer(&card->write); + memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE); + memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), + &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); + memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), + &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); + memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), + &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); + rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob, + qeth_cm_setup_cb, NULL); + return rc; + +} + +static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card) +{ + switch (card->info.type) { + case QETH_CARD_TYPE_UNKNOWN: + return 1500; + case QETH_CARD_TYPE_IQD: + return card->info.max_mtu; + case QETH_CARD_TYPE_OSD: + switch (card->info.link_type) { + case QETH_LINK_TYPE_HSTR: + case QETH_LINK_TYPE_LANE_TR: + return 2000; + default: + return 1492; + } + case QETH_CARD_TYPE_OSM: + case QETH_CARD_TYPE_OSX: + return 1492; + default: + return 1500; + } +} + +static inline int qeth_get_mtu_outof_framesize(int framesize) +{ + switch (framesize) { + case 0x4000: + return 8192; + case 0x6000: + return 16384; + case 0xa000: + return 32768; + case 0xffff: + return 57344; + default: + return 0; + } +} + +static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu) +{ + switch (card->info.type) { + case QETH_CARD_TYPE_OSD: + case QETH_CARD_TYPE_OSM: + case QETH_CARD_TYPE_OSX: + case QETH_CARD_TYPE_IQD: + return ((mtu >= 576) && + (mtu <= card->info.max_mtu)); + case QETH_CARD_TYPE_OSN: + case QETH_CARD_TYPE_UNKNOWN: + default: + return 1; + } +} + +static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, + unsigned long data) +{ + + __u16 mtu, framesize; + __u16 len; + __u8 link_type; + struct qeth_cmd_buffer *iob; + + QETH_DBF_TEXT(SETUP, 2, "ulpenacb"); + + iob = (struct qeth_cmd_buffer *) data; + memcpy(&card->token.ulp_filter_r, + QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), + QETH_MPC_TOKEN_LENGTH); + if (card->info.type == QETH_CARD_TYPE_IQD) { + memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); + mtu = qeth_get_mtu_outof_framesize(framesize); + if (!mtu) { + iob->rc = -EINVAL; + QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); + return 0; + } + if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) { + /* frame size has changed */ + if (card->dev && + ((card->dev->mtu == card->info.initial_mtu) || + (card->dev->mtu > mtu))) + card->dev->mtu = mtu; + qeth_free_qdio_buffers(card); + } + card->info.initial_mtu = mtu; + card->info.max_mtu = mtu; + card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE; + } else { + card->info.initial_mtu = qeth_get_initial_mtu_for_card(card); + card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU( + iob->data); + card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; + } + + memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); + if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { + memcpy(&link_type, + QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); + card->info.link_type = link_type; + } else + card->info.link_type = 0; + QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type); + QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); + return 0; +} + +static int qeth_ulp_enable(struct qeth_card *card) +{ + int rc; + char prot_type; + struct qeth_cmd_buffer *iob; + + /*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; + int rc = 0; + + QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); + + iob = (struct qeth_cmd_buffer *) data; + memcpy(&card->token.ulp_connection_r, + QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), + QETH_MPC_TOKEN_LENGTH); + if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), + 3)) { + QETH_DBF_TEXT(SETUP, 2, "olmlimit"); + dev_err(&card->gdev->dev, "A connection could not be " + "established because of an OLM limit\n"); + iob->rc = -EMLINK; + } + QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); + return rc; +} + +static int qeth_ulp_setup(struct qeth_card *card) +{ + int rc; + __u16 temp; + struct qeth_cmd_buffer *iob; + struct ccw_dev_id dev_id; + + QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); + + iob = qeth_wait_for_buffer(&card->write); + memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); + + memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), + &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); + memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), + &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); + memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), + &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); + + ccw_device_get_id(CARD_DDEV(card), &dev_id); + memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); + temp = (card->info.cula << 8) + card->info.unit_addr2; + memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); + rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, + qeth_ulp_setup_cb, NULL); + return rc; +} + +static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx) +{ + int rc; + struct qeth_qdio_out_buffer *newbuf; + + rc = 0; + newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); + if (!newbuf) { + rc = -ENOMEM; + goto out; + } + newbuf->buffer = &q->qdio_bufs[bidx]; + skb_queue_head_init(&newbuf->skb_list); + lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key); + newbuf->q = q; + newbuf->aob = NULL; + newbuf->next_pending = q->bufs[bidx]; + atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); + q->bufs[bidx] = newbuf; + if (q->bufstates) { + q->bufstates[bidx].user = newbuf; + QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx); + QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf); + QETH_CARD_TEXT_(q->card, 2, "%lx", + (long) newbuf->next_pending); + } +out: + return rc; +} + + +static int qeth_alloc_qdio_buffers(struct qeth_card *card) +{ + int i, j; + + QETH_DBF_TEXT(SETUP, 2, "allcqdbf"); + + if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, + QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) + return 0; + + card->qdio.in_q = kzalloc(sizeof(struct qeth_qdio_q), + GFP_KERNEL); + if (!card->qdio.in_q) + goto out_nomem; + QETH_DBF_TEXT(SETUP, 2, "inq"); + QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *)); + memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q)); + /* 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]; + card->qdio.in_q->bufs[i].rx_skb = NULL; + } + /* inbound buffer pool */ + if (qeth_alloc_buffer_pool(card)) + goto out_freeinq; + + /* outbound */ + card->qdio.out_qs = + kzalloc(card->qdio.no_out_queues * + sizeof(struct qeth_qdio_out_q *), GFP_KERNEL); + if (!card->qdio.out_qs) + goto out_freepool; + for (i = 0; i < card->qdio.no_out_queues; ++i) { + card->qdio.out_qs[i] = kzalloc(sizeof(struct qeth_qdio_out_q), + GFP_KERNEL); + if (!card->qdio.out_qs[i]) + goto out_freeoutq; + QETH_DBF_TEXT_(SETUP, 2, "outq %i", i); + QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *)); + card->qdio.out_qs[i]->queue_no = i; + /* give outbound qeth_qdio_buffers their qdio_buffers */ + for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { + BUG_ON(card->qdio.out_qs[i]->bufs[j] != NULL); + if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j)) + goto out_freeoutqbufs; + } + } + + /* completion */ + if (qeth_alloc_cq(card)) + goto out_freeoutq; + + return 0; + +out_freeoutqbufs: + while (j > 0) { + --j; + kmem_cache_free(qeth_qdio_outbuf_cache, + card->qdio.out_qs[i]->bufs[j]); + card->qdio.out_qs[i]->bufs[j] = NULL; + } +out_freeoutq: + while (i > 0) { + kfree(card->qdio.out_qs[--i]); + qeth_clear_outq_buffers(card->qdio.out_qs[i], 1); + } + kfree(card->qdio.out_qs); + card->qdio.out_qs = NULL; +out_freepool: + qeth_free_buffer_pool(card); +out_freeinq: + kfree(card->qdio.in_q); + card->qdio.in_q = NULL; +out_nomem: + atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); + return -ENOMEM; +} + +static void qeth_create_qib_param_field(struct qeth_card *card, + char *param_field) +{ + + param_field[0] = _ascebc['P']; + param_field[1] = _ascebc['C']; + param_field[2] = _ascebc['I']; + param_field[3] = _ascebc['T']; + *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); + *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); + *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); +} + +static void qeth_create_qib_param_field_blkt(struct qeth_card *card, + char *param_field) +{ + param_field[16] = _ascebc['B']; + param_field[17] = _ascebc['L']; + param_field[18] = _ascebc['K']; + param_field[19] = _ascebc['T']; + *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; + *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; + *((unsigned int *) (¶m_field[28])) = + card->info.blkt.inter_packet_jumbo; +} + +static int qeth_qdio_activate(struct qeth_card *card) +{ + QETH_DBF_TEXT(SETUP, 3, "qdioact"); + return qdio_activate(CARD_DDEV(card)); +} + +static int qeth_dm_act(struct qeth_card *card) +{ + int rc; + struct qeth_cmd_buffer *iob; + + QETH_DBF_TEXT(SETUP, 2, "dmact"); + + iob = qeth_wait_for_buffer(&card->write); + memcpy(iob->data, DM_ACT, DM_ACT_SIZE); + + memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), + &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); + memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), + &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); + rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL); + return rc; +} + +static int qeth_mpc_initialize(struct qeth_card *card) +{ + int rc; + + QETH_DBF_TEXT(SETUP, 2, "mpcinit"); + + rc = qeth_issue_next_read(card); + if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); + return rc; + } + rc = qeth_cm_enable(card); + if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); + goto out_qdio; + } + rc = qeth_cm_setup(card); + if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); + goto out_qdio; + } + rc = qeth_ulp_enable(card); + if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); + goto out_qdio; + } + rc = qeth_ulp_setup(card); + if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); + goto out_qdio; + } + rc = qeth_alloc_qdio_buffers(card); + if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); + goto out_qdio; + } + rc = qeth_qdio_establish(card); + if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); + qeth_free_qdio_buffers(card); + goto out_qdio; + } + rc = qeth_qdio_activate(card); + if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); + goto out_qdio; + } + rc = qeth_dm_act(card); + if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); + goto out_qdio; + } + + return 0; +out_qdio: + qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); + return rc; +} + +static void qeth_print_status_with_portname(struct qeth_card *card) +{ + char dbf_text[15]; + int i; + + sprintf(dbf_text, "%s", card->info.portname + 1); + for (i = 0; i < 8; i++) + dbf_text[i] = + (char) _ebcasc[(__u8) dbf_text[i]]; + dbf_text[8] = 0; + dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n" + "with link type %s (portname: %s)\n", + qeth_get_cardname(card), + (card->info.mcl_level[0]) ? " (level: " : "", + (card->info.mcl_level[0]) ? card->info.mcl_level : "", + (card->info.mcl_level[0]) ? ")" : "", + qeth_get_cardname_short(card), + dbf_text); + +} + +static void qeth_print_status_no_portname(struct qeth_card *card) +{ + if (card->info.portname[0]) + dev_info(&card->gdev->dev, "Device is a%s " + "card%s%s%s\nwith link type %s " + "(no portname needed by interface).\n", + qeth_get_cardname(card), + (card->info.mcl_level[0]) ? " (level: " : "", + (card->info.mcl_level[0]) ? card->info.mcl_level : "", + (card->info.mcl_level[0]) ? ")" : "", + qeth_get_cardname_short(card)); + else + dev_info(&card->gdev->dev, "Device is a%s " + "card%s%s%s\nwith link type %s.\n", + qeth_get_cardname(card), + (card->info.mcl_level[0]) ? " (level: " : "", + (card->info.mcl_level[0]) ? card->info.mcl_level : "", + (card->info.mcl_level[0]) ? ")" : "", + qeth_get_cardname_short(card)); +} + +void qeth_print_status_message(struct qeth_card *card) +{ + switch (card->info.type) { + case QETH_CARD_TYPE_OSD: + case QETH_CARD_TYPE_OSM: + case QETH_CARD_TYPE_OSX: + /* 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] & 0x80)) { + card->info.mcl_level[0] = (char) _ebcasc[(__u8) + card->info.mcl_level[0]]; + card->info.mcl_level[1] = (char) _ebcasc[(__u8) + card->info.mcl_level[1]]; + card->info.mcl_level[2] = (char) _ebcasc[(__u8) + card->info.mcl_level[2]]; + card->info.mcl_level[3] = (char) _ebcasc[(__u8) + card->info.mcl_level[3]]; + card->info.mcl_level[QETH_MCL_LENGTH] = 0; + } + break; + default: + memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); + } + if (card->info.portname_required) + qeth_print_status_with_portname(card); + else + qeth_print_status_no_portname(card); +} +EXPORT_SYMBOL_GPL(qeth_print_status_message); + +static void qeth_initialize_working_pool_list(struct qeth_card *card) +{ + struct qeth_buffer_pool_entry *entry; + + QETH_CARD_TEXT(card, 5, "inwrklst"); + + list_for_each_entry(entry, + &card->qdio.init_pool.entry_list, init_list) { + qeth_put_buffer_pool_entry(card, entry); + } +} + +static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( + struct qeth_card *card) +{ + struct list_head *plh; + struct qeth_buffer_pool_entry *entry; + int i, free; + struct page *page; + + if (list_empty(&card->qdio.in_buf_pool.entry_list)) + return NULL; + + list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { + entry = list_entry(plh, struct qeth_buffer_pool_entry, list); + free = 1; + for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { + if (page_count(virt_to_page(entry->elements[i])) > 1) { + free = 0; + break; + } + } + if (free) { + list_del_init(&entry->list); + return entry; + } + } + + /* 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; + + if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) { + buf->rx_skb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN); + if (!buf->rx_skb) + return 1; + } + + pool_entry = qeth_find_free_buffer_pool_entry(card); + if (!pool_entry) + return 1; + + /* + * since the buffer is accessed only from the input_tasklet + * there shouldn't be a need to synchronize; also, since we use + * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off + * buffers + */ + + buf->pool_entry = pool_entry; + for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { + buf->buffer->element[i].length = PAGE_SIZE; + buf->buffer->element[i].addr = pool_entry->elements[i]; + if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) + buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY; + else + buf->buffer->element[i].eflags = 0; + buf->buffer->element[i].sflags = 0; + } + return 0; +} + +int qeth_init_qdio_queues(struct qeth_card *card) +{ + int i, j; + int rc; + + QETH_DBF_TEXT(SETUP, 2, "initqdqs"); + + /* 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); + if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); + return rc; + } + + /* completion */ + rc = qeth_cq_init(card); + if (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], + QETH_QDIO_BUF_EMPTY); + } + card->qdio.out_qs[i]->card = card; + card->qdio.out_qs[i]->next_buf_to_fill = 0; + card->qdio.out_qs[i]->do_pack = 0; + atomic_set(&card->qdio.out_qs[i]->used_buffers, 0); + atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0); + atomic_set(&card->qdio.out_qs[i]->state, + QETH_OUT_Q_UNLOCKED); + } + return 0; +} +EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); + +static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type) +{ + switch (link_type) { + case QETH_LINK_TYPE_HSTR: + return 2; + default: + return 1; + } +} + +static void qeth_fill_ipacmd_header(struct qeth_card *card, + struct qeth_ipa_cmd *cmd, __u8 command, + enum qeth_prot_versions prot) +{ + memset(cmd, 0, sizeof(struct qeth_ipa_cmd)); + cmd->hdr.command = command; + cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST; + cmd->hdr.seqno = card->seqno.ipa; + cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type); + cmd->hdr.rel_adapter_no = (__u8) card->info.portno; + if (card->options.layer2) + cmd->hdr.prim_version_no = 2; + else + cmd->hdr.prim_version_no = 1; + cmd->hdr.param_count = 1; + cmd->hdr.prot_version = prot; + cmd->hdr.ipa_supported = 0; + cmd->hdr.ipa_enabled = 0; +} + +struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card, + enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot) +{ + struct qeth_cmd_buffer *iob; + struct qeth_ipa_cmd *cmd; + + iob = qeth_wait_for_buffer(&card->write); + cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); + qeth_fill_ipacmd_header(card, cmd, ipacmd, prot); + + return iob; +} +EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); + +void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, + char prot_type) +{ + memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); + memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); + memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), + &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); +} +EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); + +int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, + int (*reply_cb)(struct qeth_card *, struct qeth_reply*, + unsigned long), + void *reply_param) +{ + int rc; + char prot_type; + + QETH_CARD_TEXT(card, 4, "sendipa"); + + if (card->options.layer2) + if (card->info.type == QETH_CARD_TYPE_OSN) + prot_type = QETH_PROT_OSN2; + else + prot_type = QETH_PROT_LAYER2; + else + prot_type = QETH_PROT_TCPIP; + qeth_prepare_ipa_cmd(card, iob, prot_type); + rc = qeth_send_control_data(card, IPA_CMD_LENGTH, + iob, reply_cb, reply_param); + if (rc == -ETIME) { + qeth_clear_ipacmd_list(card); + qeth_schedule_recovery(card); + } + return rc; +} +EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); + +int qeth_send_startlan(struct qeth_card *card) +{ + int rc; + struct qeth_cmd_buffer *iob; + + QETH_DBF_TEXT(SETUP, 2, "strtlan"); + + iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); + rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); + return rc; +} +EXPORT_SYMBOL_GPL(qeth_send_startlan); + +int qeth_default_setadapterparms_cb(struct qeth_card *card, + struct qeth_reply *reply, unsigned long data) +{ + struct qeth_ipa_cmd *cmd; + + QETH_CARD_TEXT(card, 4, "defadpcb"); + + cmd = (struct qeth_ipa_cmd *) data; + if (cmd->hdr.return_code == 0) + cmd->hdr.return_code = + cmd->data.setadapterparms.hdr.return_code; + return 0; +} +EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb); + +static int qeth_query_setadapterparms_cb(struct qeth_card *card, + struct qeth_reply *reply, unsigned long data) +{ + struct qeth_ipa_cmd *cmd; + + QETH_CARD_TEXT(card, 3, "quyadpcb"); + + cmd = (struct qeth_ipa_cmd *) data; + if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) { + card->info.link_type = + cmd->data.setadapterparms.data.query_cmds_supp.lan_type; + QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type); + } + card->options.adp.supported_funcs = + cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; + return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); +} + +struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, + __u32 command, __u32 cmdlen) +{ + struct qeth_cmd_buffer *iob; + struct qeth_ipa_cmd *cmd; + + iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, + QETH_PROT_IPV4); + cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); + cmd->data.setadapterparms.hdr.cmdlength = cmdlen; + cmd->data.setadapterparms.hdr.command_code = command; + cmd->data.setadapterparms.hdr.used_total = 1; + cmd->data.setadapterparms.hdr.seq_no = 1; + + return iob; +} +EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd); + +int qeth_query_setadapterparms(struct qeth_card *card) +{ + int rc; + struct qeth_cmd_buffer *iob; + + QETH_CARD_TEXT(card, 3, "queryadp"); + iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, + sizeof(struct qeth_ipacmd_setadpparms)); + rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); + return rc; +} +EXPORT_SYMBOL_GPL(qeth_query_setadapterparms); + +static int qeth_query_ipassists_cb(struct qeth_card *card, + struct qeth_reply *reply, unsigned long data) +{ + struct qeth_ipa_cmd *cmd; + + QETH_DBF_TEXT(SETUP, 2, "qipasscb"); + + cmd = (struct qeth_ipa_cmd *) data; + if (cmd->hdr.prot_version == QETH_PROT_IPV4) { + card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; + card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; + } else { + card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; + card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; + } + QETH_DBF_TEXT(SETUP, 2, "suppenbl"); + QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_supported); + QETH_DBF_TEXT_(SETUP, 2, "%08x", (__u32)cmd->hdr.ipa_enabled); + return 0; +} + +int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot) +{ + int rc; + struct qeth_cmd_buffer *iob; + + QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); + iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); + rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); + return rc; +} +EXPORT_SYMBOL_GPL(qeth_query_ipassists); + +static int qeth_query_setdiagass_cb(struct qeth_card *card, + struct qeth_reply *reply, unsigned long data) +{ + struct qeth_ipa_cmd *cmd; + __u16 rc; + + cmd = (struct qeth_ipa_cmd *)data; + rc = cmd->hdr.return_code; + if (rc) + QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); + else + card->info.diagass_support = cmd->data.diagass.ext; + return 0; +} + +static int qeth_query_setdiagass(struct qeth_card *card) +{ + struct qeth_cmd_buffer *iob; + struct qeth_ipa_cmd *cmd; + + QETH_DBF_TEXT(SETUP, 2, "qdiagass"); + iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); + cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); + cmd->data.diagass.subcmd_len = 16; + cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY; + return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL); +} + +static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid) +{ + unsigned long info = get_zeroed_page(GFP_KERNEL); + struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info; + struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info; + struct ccw_dev_id ccwid; + int level, rc; + + tid->chpid = card->info.chpid; + ccw_device_get_id(CARD_RDEV(card), &ccwid); + tid->ssid = ccwid.ssid; + tid->devno = ccwid.devno; + if (!info) + return; + + rc = stsi(NULL, 0, 0, 0); + if (rc == -ENOSYS) + level = rc; + else + level = (((unsigned int) rc) >> 28); + + if ((level >= 2) && (stsi(info222, 2, 2, 2) != -ENOSYS)) + tid->lparnr = info222->lpar_number; + + if ((level >= 3) && (stsi(info322, 3, 2, 2) != -ENOSYS)) { + EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name)); + memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname)); + } + free_page(info); + return; +} + +static int qeth_hw_trap_cb(struct qeth_card *card, + struct qeth_reply *reply, unsigned long data) +{ + struct qeth_ipa_cmd *cmd; + __u16 rc; + + cmd = (struct qeth_ipa_cmd *)data; + rc = cmd->hdr.return_code; + if (rc) + QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); + return 0; +} + +int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action) +{ + struct qeth_cmd_buffer *iob; + struct qeth_ipa_cmd *cmd; + + QETH_DBF_TEXT(SETUP, 2, "diagtrap"); + iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); + cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); + cmd->data.diagass.subcmd_len = 80; + cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP; + cmd->data.diagass.type = 1; + cmd->data.diagass.action = action; + switch (action) { + case QETH_DIAGS_TRAP_ARM: + cmd->data.diagass.options = 0x0003; + cmd->data.diagass.ext = 0x00010000 + + sizeof(struct qeth_trap_id); + qeth_get_trap_id(card, + (struct qeth_trap_id *)cmd->data.diagass.cdata); + break; + case QETH_DIAGS_TRAP_DISARM: + cmd->data.diagass.options = 0x0001; + break; + case QETH_DIAGS_TRAP_CAPTURE: + break; + } + return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL); +} +EXPORT_SYMBOL_GPL(qeth_hw_trap); + +int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf, + unsigned int qdio_error, const char *dbftext) +{ + if (qdio_error) { + QETH_CARD_TEXT(card, 2, dbftext); + QETH_CARD_TEXT_(card, 2, " F15=%02X", + buf->element[15].sflags); + QETH_CARD_TEXT_(card, 2, " F14=%02X", + buf->element[14].sflags); + QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error); + if ((buf->element[15].sflags) == 0x12) { + card->stats.rx_dropped++; + return 0; + } else + return 1; + } + return 0; +} +EXPORT_SYMBOL_GPL(qeth_check_qdio_errors); + +void qeth_buffer_reclaim_work(struct work_struct *work) +{ + struct qeth_card *card = container_of(work, struct qeth_card, + buffer_reclaim_work.work); + + QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index); + qeth_queue_input_buffer(card, card->reclaim_index); +} + +void qeth_queue_input_buffer(struct qeth_card *card, int index) +{ + struct qeth_qdio_q *queue = card->qdio.in_q; + struct list_head *lh; + int count; + int i; + int rc; + int newcount = 0; + + count = (index < queue->next_buf_to_init)? + card->qdio.in_buf_pool.buf_count - + (queue->next_buf_to_init - index) : + card->qdio.in_buf_pool.buf_count - + (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); + /* only requeue at a certain threshold to avoid SIGAs */ + if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { + for (i = queue->next_buf_to_init; + i < queue->next_buf_to_init + count; ++i) { + if (qeth_init_input_buffer(card, + &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) { + break; + } else { + newcount++; + } + } + + if (newcount < count) { + /* we are in memory shortage so we switch back to + traditional skb allocation and drop packages */ + atomic_set(&card->force_alloc_skb, 3); + count = newcount; + } else { + atomic_add_unless(&card->force_alloc_skb, -1, 0); + } + + if (!count) { + i = 0; + list_for_each(lh, &card->qdio.in_buf_pool.entry_list) + i++; + if (i == card->qdio.in_buf_pool.buf_count) { + QETH_CARD_TEXT(card, 2, "qsarbw"); + card->reclaim_index = index; + schedule_delayed_work( + &card->buffer_reclaim_work, + QETH_RECLAIM_WORK_TIME); + } + return; + } + + /* + * 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, 0, + queue->next_buf_to_init, count); + if (card->options.performance_stats) + card->perf_stats.inbound_do_qdio_time += + qeth_get_micros() - + card->perf_stats.inbound_do_qdio_start_time; + if (rc) { + QETH_CARD_TEXT(card, 2, "qinberr"); + } + queue->next_buf_to_init = (queue->next_buf_to_init + count) % + QDIO_MAX_BUFFERS_PER_Q; + } +} +EXPORT_SYMBOL_GPL(qeth_queue_input_buffer); + +static int qeth_handle_send_error(struct qeth_card *card, + struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) +{ + int sbalf15 = buffer->buffer->element[15].sflags; + + QETH_CARD_TEXT(card, 6, "hdsnderr"); + if (card->info.type == QETH_CARD_TYPE_IQD) { + if (sbalf15 == 0) { + qdio_err = 0; + } else { + qdio_err = 1; + } + } + qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); + + if (!qdio_err) + return QETH_SEND_ERROR_NONE; + + if ((sbalf15 >= 15) && (sbalf15 <= 31)) + return QETH_SEND_ERROR_RETRY; + + QETH_CARD_TEXT(card, 1, "lnkfail"); + QETH_CARD_TEXT_(card, 1, "%04x %02x", + (u16)qdio_err, (u8)sbalf15); + return QETH_SEND_ERROR_LINK_FAILURE; +} + +/* + * 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_CARD_TEXT(queue->card, 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_CARD_TEXT(queue->card, 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 index, + int count) +{ + struct qeth_qdio_out_buffer *buf; + int rc; + int i; + unsigned int qdio_flags; + + for (i = index; i < index + count; ++i) { + int bidx = i % QDIO_MAX_BUFFERS_PER_Q; + buf = queue->bufs[bidx]; + buf->buffer->element[buf->next_element_to_fill - 1].eflags |= + SBAL_EFLAGS_LAST_ENTRY; + + if (queue->bufstates) + queue->bufstates[bidx].user = buf; + + if (queue->card->info.type == QETH_CARD_TYPE_IQD) + continue; + + if (!queue->do_pack) { + if ((atomic_read(&queue->used_buffers) >= + (QETH_HIGH_WATERMARK_PACK - + QETH_WATERMARK_PACK_FUZZ)) && + !atomic_read(&queue->set_pci_flags_count)) { + /* it's likely that we'll go to packing + * mode soon */ + atomic_inc(&queue->set_pci_flags_count); + buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ; + } + } else { + if (!atomic_read(&queue->set_pci_flags_count)) { + /* + * 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].sflags |= SBAL_SFLAGS0_PCI_REQ; + } + } + } + + queue->card->dev->trans_start = jiffies; + if (queue->card->options.performance_stats) { + queue->card->perf_stats.outbound_do_qdio_cnt++; + queue->card->perf_stats.outbound_do_qdio_start_time = + qeth_get_micros(); + } + qdio_flags = QDIO_FLAG_SYNC_OUTPUT; + if (atomic_read(&queue->set_pci_flags_count)) + qdio_flags |= QDIO_FLAG_PCI_OUT; + rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, + queue->queue_no, index, count); + if (queue->card->options.performance_stats) + queue->card->perf_stats.outbound_do_qdio_time += + qeth_get_micros() - + queue->card->perf_stats.outbound_do_qdio_start_time; + atomic_add(count, &queue->used_buffers); + if (rc) { + queue->card->stats.tx_errors += count; + /* ignore temporary SIGA errors without busy condition */ + if (rc == QDIO_ERROR_SIGA_TARGET) + return; + QETH_CARD_TEXT(queue->card, 2, "flushbuf"); + QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no); + QETH_CARD_TEXT_(queue->card, 2, " idx%d", index); + QETH_CARD_TEXT_(queue->card, 2, " c%d", count); + QETH_CARD_TEXT_(queue->card, 2, " err%d", rc); + + /* this must not happen under normal circumstances. if it + * happens something is really wrong -> recover */ + qeth_schedule_recovery(queue->card); + return; + } + if (queue->card->options.performance_stats) + queue->card->perf_stats.bufs_sent += count; +} + +static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) +{ + int index; + int flush_cnt = 0; + int q_was_packing = 0; + + /* + * check if weed have to switch to non-packing mode or if + * we have to get a pci flag out on the queue + */ + if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || + !atomic_read(&queue->set_pci_flags_count)) { + if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == + QETH_OUT_Q_UNLOCKED) { + /* + * If we get in here, there was no action in + * do_send_packet. So, we check if there is a + * packing buffer to be flushed here. + */ + netif_stop_queue(queue->card->dev); + index = queue->next_buf_to_fill; + q_was_packing = queue->do_pack; + /* queue->do_pack may change */ + barrier(); + flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); + if (!flush_cnt && + !atomic_read(&queue->set_pci_flags_count)) + flush_cnt += + qeth_flush_buffers_on_no_pci(queue); + if (queue->card->options.performance_stats && + q_was_packing) + queue->card->perf_stats.bufs_sent_pack += + flush_cnt; + if (flush_cnt) + qeth_flush_buffers(queue, index, flush_cnt); + atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); + } + } +} + +void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue, + unsigned long card_ptr) +{ + struct qeth_card *card = (struct qeth_card *)card_ptr; + + if (card->dev && (card->dev->flags & IFF_UP)) + napi_schedule(&card->napi); +} +EXPORT_SYMBOL_GPL(qeth_qdio_start_poll); + +int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq) +{ + int rc; + + if (card->options.cq == QETH_CQ_NOTAVAILABLE) { + rc = -1; + goto out; + } else { + if (card->options.cq == cq) { + rc = 0; + goto out; + } + + if (card->state != CARD_STATE_DOWN && + card->state != CARD_STATE_RECOVER) { + rc = -1; + goto out; + } + + qeth_free_qdio_buffers(card); + card->options.cq = cq; + rc = 0; + } +out: + return rc; + +} +EXPORT_SYMBOL_GPL(qeth_configure_cq); + + +static void qeth_qdio_cq_handler(struct qeth_card *card, + unsigned int qdio_err, + unsigned int queue, int first_element, int count) { + struct qeth_qdio_q *cq = card->qdio.c_q; + int i; + int rc; + + if (!qeth_is_cq(card, queue)) + goto out; + + QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element); + QETH_CARD_TEXT_(card, 5, "qcqhc%d", count); + QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err); + + if (qdio_err) { + netif_stop_queue(card->dev); + qeth_schedule_recovery(card); + goto out; + } + + if (card->options.performance_stats) { + card->perf_stats.cq_cnt++; + card->perf_stats.cq_start_time = qeth_get_micros(); + } + + for (i = first_element; i < first_element + count; ++i) { + int bidx = i % QDIO_MAX_BUFFERS_PER_Q; + struct qdio_buffer *buffer = &cq->qdio_bufs[bidx]; + int e; + + e = 0; + while (buffer->element[e].addr) { + unsigned long phys_aob_addr; + + phys_aob_addr = (unsigned long) buffer->element[e].addr; + qeth_qdio_handle_aob(card, phys_aob_addr); + buffer->element[e].addr = NULL; + buffer->element[e].eflags = 0; + buffer->element[e].sflags = 0; + buffer->element[e].length = 0; + + ++e; + } + + buffer->element[15].eflags = 0; + buffer->element[15].sflags = 0; + } + rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue, + card->qdio.c_q->next_buf_to_init, + count); + if (rc) { + dev_warn(&card->gdev->dev, + "QDIO reported an error, rc=%i\n", rc); + QETH_CARD_TEXT(card, 2, "qcqherr"); + } + card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init + + count) % QDIO_MAX_BUFFERS_PER_Q; + + netif_wake_queue(card->dev); + + if (card->options.performance_stats) { + int delta_t = qeth_get_micros(); + delta_t -= card->perf_stats.cq_start_time; + card->perf_stats.cq_time += delta_t; + } +out: + return; +} + +void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err, + unsigned int queue, int first_elem, int count, + unsigned long card_ptr) +{ + struct qeth_card *card = (struct qeth_card *)card_ptr; + + QETH_CARD_TEXT_(card, 2, "qihq%d", queue); + QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err); + + if (qeth_is_cq(card, queue)) + qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count); + else if (qdio_err) + qeth_schedule_recovery(card); + + +} +EXPORT_SYMBOL_GPL(qeth_qdio_input_handler); + +void qeth_qdio_output_handler(struct ccw_device *ccwdev, + unsigned int qdio_error, int __queue, int first_element, + int count, unsigned long card_ptr) +{ + struct qeth_card *card = (struct qeth_card *) card_ptr; + struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; + struct qeth_qdio_out_buffer *buffer; + int i; + + QETH_CARD_TEXT(card, 6, "qdouhdl"); + if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) { + QETH_CARD_TEXT(card, 2, "achkcond"); + netif_stop_queue(card->dev); + qeth_schedule_recovery(card); + return; + } + if (card->options.performance_stats) { + card->perf_stats.outbound_handler_cnt++; + card->perf_stats.outbound_handler_start_time = + qeth_get_micros(); + } + for (i = first_element; i < (first_element + count); ++i) { + int bidx = i % QDIO_MAX_BUFFERS_PER_Q; + buffer = queue->bufs[bidx]; + qeth_handle_send_error(card, buffer, qdio_error); + + if (queue->bufstates && + (queue->bufstates[bidx].flags & + QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) { + BUG_ON(card->options.cq != QETH_CQ_ENABLED); + + if (atomic_cmpxchg(&buffer->state, + QETH_QDIO_BUF_PRIMED, + QETH_QDIO_BUF_PENDING) == + QETH_QDIO_BUF_PRIMED) { + qeth_notify_skbs(queue, buffer, + TX_NOTIFY_PENDING); + } + buffer->aob = queue->bufstates[bidx].aob; + QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx); + QETH_CARD_TEXT(queue->card, 5, "aob"); + QETH_CARD_TEXT_(queue->card, 5, "%lx", + virt_to_phys(buffer->aob)); + BUG_ON(bidx < 0 || bidx >= QDIO_MAX_BUFFERS_PER_Q); + if (qeth_init_qdio_out_buf(queue, bidx)) { + QETH_CARD_TEXT(card, 2, "outofbuf"); + qeth_schedule_recovery(card); + } + } else { + if (card->options.cq == QETH_CQ_ENABLED) { + enum iucv_tx_notify n; + + n = qeth_compute_cq_notification( + buffer->buffer->element[15].sflags, 0); + qeth_notify_skbs(queue, buffer, n); + } + + qeth_clear_output_buffer(queue, buffer, + QETH_QDIO_BUF_EMPTY); + } + qeth_cleanup_handled_pending(queue, bidx, 0); + } + atomic_sub(count, &queue->used_buffers); + /* check if we need to do something on this outbound queue */ + if (card->info.type != QETH_CARD_TYPE_IQD) + qeth_check_outbound_queue(queue); + + netif_wake_queue(queue->card->dev); + if (card->options.performance_stats) + card->perf_stats.outbound_handler_time += qeth_get_micros() - + card->perf_stats.outbound_handler_start_time; +} +EXPORT_SYMBOL_GPL(qeth_qdio_output_handler); + +int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, + int ipv, int cast_type) +{ + if (!ipv && (card->info.type == QETH_CARD_TYPE_OSD || + card->info.type == QETH_CARD_TYPE_OSX)) + return card->qdio.default_out_queue; + switch (card->qdio.no_out_queues) { + case 4: + if (cast_type && card->info.is_multicast_different) + return card->info.is_multicast_different & + (card->qdio.no_out_queues - 1); + if (card->qdio.do_prio_queueing && (ipv == 4)) { + const u8 tos = ip_hdr(skb)->tos; + + if (card->qdio.do_prio_queueing == + QETH_PRIO_Q_ING_TOS) { + if (tos & IP_TOS_NOTIMPORTANT) + return 3; + if (tos & IP_TOS_HIGHRELIABILITY) + return 2; + if (tos & IP_TOS_HIGHTHROUGHPUT) + return 1; + if (tos & IP_TOS_LOWDELAY) + return 0; + } + if (card->qdio.do_prio_queueing == + QETH_PRIO_Q_ING_PREC) + return 3 - (tos >> 6); + } else if (card->qdio.do_prio_queueing && (ipv == 6)) { + /* TODO: IPv6!!! */ + } + return card->qdio.default_out_queue; + case 1: /* fallthrough for single-out-queue 1920-device */ + default: + return card->qdio.default_out_queue; + } +} +EXPORT_SYMBOL_GPL(qeth_get_priority_queue); + +int qeth_get_elements_no(struct qeth_card *card, void *hdr, + struct sk_buff *skb, int elems) +{ + int dlen = skb->len - skb->data_len; + int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) - + PFN_DOWN((unsigned long)skb->data); + + elements_needed += skb_shinfo(skb)->nr_frags; + if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { + QETH_DBF_MESSAGE(2, "Invalid size of IP packet " + "(Number=%d / Length=%d). Discarded.\n", + (elements_needed+elems), skb->len); + return 0; + } + return elements_needed; +} +EXPORT_SYMBOL_GPL(qeth_get_elements_no); + +int qeth_hdr_chk_and_bounce(struct sk_buff *skb, int len) +{ + int hroom, inpage, rest; + + if (((unsigned long)skb->data & PAGE_MASK) != + (((unsigned long)skb->data + len - 1) & PAGE_MASK)) { + hroom = skb_headroom(skb); + inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE); + rest = len - inpage; + if (rest > hroom) + return 1; + memmove(skb->data - rest, skb->data, skb->len - skb->data_len); + skb->data -= rest; + QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest); + } + return 0; +} +EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce); + +static inline void __qeth_fill_buffer(struct sk_buff *skb, + struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill, + int offset) +{ + int length = skb->len - skb->data_len; + int length_here; + int element; + char *data; + int first_lap, cnt; + struct skb_frag_struct *frag; + + element = *next_element_to_fill; + data = skb->data; + first_lap = (is_tso == 0 ? 1 : 0); + + if (offset >= 0) { + data = skb->data + offset; + length -= offset; + first_lap = 0; + } + + while (length > 0) { + /* length_here 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) + if (skb_shinfo(skb)->nr_frags) + buffer->element[element].eflags = + SBAL_EFLAGS_FIRST_FRAG; + else + buffer->element[element].eflags = 0; + else + buffer->element[element].eflags = + SBAL_EFLAGS_MIDDLE_FRAG; + } else { + if (first_lap) + buffer->element[element].eflags = + SBAL_EFLAGS_FIRST_FRAG; + else + buffer->element[element].eflags = + SBAL_EFLAGS_MIDDLE_FRAG; + } + data += length_here; + element++; + first_lap = 0; + } + + for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { + frag = &skb_shinfo(skb)->frags[cnt]; + buffer->element[element].addr = (char *) + page_to_phys(skb_frag_page(frag)) + + frag->page_offset; + buffer->element[element].length = frag->size; + buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG; + element++; + } + + if (buffer->element[element - 1].eflags) + buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; + *next_element_to_fill = element; +} + +static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue, + struct qeth_qdio_out_buffer *buf, struct sk_buff *skb, + struct qeth_hdr *hdr, int offset, int hd_len) +{ + struct qdio_buffer *buffer; + int flush_cnt = 0, hdr_len, large_send = 0; + + buffer = buf->buffer; + atomic_inc(&skb->users); + skb_queue_tail(&buf->skb_list, skb); + + /*check first on TSO ....*/ + if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) { + int element = buf->next_element_to_fill; + + hdr_len = sizeof(struct qeth_hdr_tso) + + ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len; + /*fill first buffer entry only with header information */ + buffer->element[element].addr = skb->data; + buffer->element[element].length = hdr_len; + buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; + buf->next_element_to_fill++; + skb->data += hdr_len; + skb->len -= hdr_len; + large_send = 1; + } + + if (offset >= 0) { + int element = buf->next_element_to_fill; + buffer->element[element].addr = hdr; + buffer->element[element].length = sizeof(struct qeth_hdr) + + hd_len; + buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; + buf->is_header[element] = 1; + buf->next_element_to_fill++; + } + + __qeth_fill_buffer(skb, buffer, large_send, + (int *)&buf->next_element_to_fill, offset); + + if (!queue->do_pack) { + QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); + /* set state to PRIMED -> will be flushed */ + atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); + flush_cnt = 1; + } else { + QETH_CARD_TEXT(queue->card, 6, "fillbfpa"); + if (queue->card->options.performance_stats) + queue->card->perf_stats.skbs_sent_pack++; + if (buf->next_element_to_fill >= + QETH_MAX_BUFFER_ELEMENTS(queue->card)) { + /* + * 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, + int offset, int hd_len) +{ + struct qeth_qdio_out_buffer *buffer; + int index; + + /* spin until we get the queue ... */ + while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, + QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); + /* ... now we've got the queue */ + index = queue->next_buf_to_fill; + 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; + queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) % + QDIO_MAX_BUFFERS_PER_Q; + atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); + qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); + qeth_flush_buffers(queue, index, 1); + return 0; +out: + atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); + return -EBUSY; +} +EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast); + +int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, + struct sk_buff *skb, struct qeth_hdr *hdr, + int elements_needed) +{ + struct qeth_qdio_out_buffer *buffer; + int start_index; + int flush_count = 0; + int do_pack = 0; + int tmp; + int rc = 0; + + /* 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; + /* does packet fit in current buffer? */ + if ((QETH_MAX_BUFFER_ELEMENTS(card) - + buffer->next_element_to_fill) < elements_needed) { + /* ... no -> set state PRIMED */ + atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); + flush_count++; + queue->next_buf_to_fill = + (queue->next_buf_to_fill + 1) % + QDIO_MAX_BUFFERS_PER_Q; + buffer = queue->bufs[queue->next_buf_to_fill]; + /* we did a step forward, so check buffer state + * again */ + if (atomic_read(&buffer->state) != + QETH_QDIO_BUF_EMPTY) { + qeth_flush_buffers(queue, start_index, + flush_count); + atomic_set(&queue->state, + QETH_OUT_Q_UNLOCKED); + return -EBUSY; + } + } + } + tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0); + queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) % + QDIO_MAX_BUFFERS_PER_Q; + flush_count += tmp; + if (flush_count) + qeth_flush_buffers(queue, start_index, flush_count); + else if (!atomic_read(&queue->set_pci_flags_count)) + atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); + /* + * 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, 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_CARD_TEXT(card, 4, "prmadpcb"); + + cmd = (struct qeth_ipa_cmd *) data; + setparms = &(cmd->data.setadapterparms); + + qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); + if (cmd->hdr.return_code) { + QETH_CARD_TEXT_(card, 4, "prmrc%2.2x", cmd->hdr.return_code); + setparms->data.mode = SET_PROMISC_MODE_OFF; + } + card->info.promisc_mode = setparms->data.mode; + return 0; +} + +void qeth_setadp_promisc_mode(struct qeth_card *card) +{ + enum qeth_ipa_promisc_modes mode; + struct net_device *dev = card->dev; + struct qeth_cmd_buffer *iob; + struct qeth_ipa_cmd *cmd; + + QETH_CARD_TEXT(card, 4, "setprom"); + + if (((dev->flags & IFF_PROMISC) && + (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || + (!(dev->flags & IFF_PROMISC) && + (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) + return; + mode = SET_PROMISC_MODE_OFF; + if (dev->flags & IFF_PROMISC) + mode = SET_PROMISC_MODE_ON; + QETH_CARD_TEXT_(card, 4, "mode:%x", mode); + + iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, + sizeof(struct qeth_ipacmd_setadpparms)); + cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); + cmd->data.setadapterparms.data.mode = mode; + qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); +} +EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); + +int qeth_change_mtu(struct net_device *dev, int new_mtu) +{ + struct qeth_card *card; + char dbf_text[15]; + + card = dev->ml_priv; + + QETH_CARD_TEXT(card, 4, "chgmtu"); + sprintf(dbf_text, "%8x", new_mtu); + QETH_CARD_TEXT(card, 4, dbf_text); + + if (new_mtu < 64) + return -EINVAL; + if (new_mtu > 65535) + return -EINVAL; + if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) && + (!qeth_mtu_is_valid(card, new_mtu))) + return -EINVAL; + dev->mtu = new_mtu; + return 0; +} +EXPORT_SYMBOL_GPL(qeth_change_mtu); + +struct net_device_stats *qeth_get_stats(struct net_device *dev) +{ + struct qeth_card *card; + + card = dev->ml_priv; + + QETH_CARD_TEXT(card, 5, "getstat"); + + return &card->stats; +} +EXPORT_SYMBOL_GPL(qeth_get_stats); + +static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, + struct qeth_reply *reply, unsigned long data) +{ + struct qeth_ipa_cmd *cmd; + + QETH_CARD_TEXT(card, 4, "chgmaccb"); + + cmd = (struct qeth_ipa_cmd *) data; + if (!card->options.layer2 || + !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) { + memcpy(card->dev->dev_addr, + &cmd->data.setadapterparms.data.change_addr.addr, + OSA_ADDR_LEN); + card->info.mac_bits |= QETH_LAYER2_MAC_READ; + } + qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); + return 0; +} + +int qeth_setadpparms_change_macaddr(struct qeth_card *card) +{ + int rc; + struct qeth_cmd_buffer *iob; + struct qeth_ipa_cmd *cmd; + + QETH_CARD_TEXT(card, 4, "chgmac"); + + iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, + sizeof(struct qeth_ipacmd_setadpparms)); + cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); + cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; + cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN; + memcpy(&cmd->data.setadapterparms.data.change_addr.addr, + card->dev->dev_addr, OSA_ADDR_LEN); + rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, + NULL); + return rc; +} +EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); + +static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card, + struct qeth_reply *reply, unsigned long data) +{ + struct qeth_ipa_cmd *cmd; + struct qeth_set_access_ctrl *access_ctrl_req; + + QETH_CARD_TEXT(card, 4, "setaccb"); + + cmd = (struct qeth_ipa_cmd *) data; + access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; + QETH_DBF_TEXT_(SETUP, 2, "setaccb"); + QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); + QETH_DBF_TEXT_(SETUP, 2, "rc=%d", + cmd->data.setadapterparms.hdr.return_code); + switch (cmd->data.setadapterparms.hdr.return_code) { + case SET_ACCESS_CTRL_RC_SUCCESS: + case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: + case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: + { + card->options.isolation = access_ctrl_req->subcmd_code; + if (card->options.isolation == ISOLATION_MODE_NONE) { + dev_info(&card->gdev->dev, + "QDIO data connection isolation is deactivated\n"); + } else { + dev_info(&card->gdev->dev, + "QDIO data connection isolation is activated\n"); + } + QETH_DBF_MESSAGE(3, "OK:SET_ACCESS_CTRL(%s, %d)==%d\n", + card->gdev->dev.kobj.name, + access_ctrl_req->subcmd_code, + cmd->data.setadapterparms.hdr.return_code); + break; + } + case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: + { + QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n", + card->gdev->dev.kobj.name, + access_ctrl_req->subcmd_code, + cmd->data.setadapterparms.hdr.return_code); + dev_err(&card->gdev->dev, "Adapter does not " + "support QDIO data connection isolation\n"); + + /* ensure isolation mode is "none" */ + card->options.isolation = ISOLATION_MODE_NONE; + break; + } + case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: + { + QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n", + card->gdev->dev.kobj.name, + access_ctrl_req->subcmd_code, + cmd->data.setadapterparms.hdr.return_code); + dev_err(&card->gdev->dev, + "Adapter is dedicated. " + "QDIO data connection isolation not supported\n"); + + /* ensure isolation mode is "none" */ + card->options.isolation = ISOLATION_MODE_NONE; + break; + } + case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: + { + QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d\n", + card->gdev->dev.kobj.name, + access_ctrl_req->subcmd_code, + cmd->data.setadapterparms.hdr.return_code); + dev_err(&card->gdev->dev, + "TSO does not permit QDIO data connection isolation\n"); + + /* ensure isolation mode is "none" */ + card->options.isolation = ISOLATION_MODE_NONE; + break; + } + default: + { + /* this should never happen */ + QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_MODE(%s,%d)==%d" + "==UNKNOWN\n", + card->gdev->dev.kobj.name, + access_ctrl_req->subcmd_code, + cmd->data.setadapterparms.hdr.return_code); + + /* ensure isolation mode is "none" */ + card->options.isolation = ISOLATION_MODE_NONE; + break; + } + } + qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); + return 0; +} + +static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, + enum qeth_ipa_isolation_modes isolation) +{ + int rc; + struct qeth_cmd_buffer *iob; + struct qeth_ipa_cmd *cmd; + struct qeth_set_access_ctrl *access_ctrl_req; + + QETH_CARD_TEXT(card, 4, "setacctl"); + + QETH_DBF_TEXT_(SETUP, 2, "setacctl"); + QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name); + + iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL, + sizeof(struct qeth_ipacmd_setadpparms_hdr) + + sizeof(struct qeth_set_access_ctrl)); + cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); + access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl; + access_ctrl_req->subcmd_code = isolation; + + rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb, + NULL); + QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc); + return rc; +} + +int qeth_set_access_ctrl_online(struct qeth_card *card) +{ + int rc = 0; + + QETH_CARD_TEXT(card, 4, "setactlo"); + + if ((card->info.type == QETH_CARD_TYPE_OSD || + card->info.type == QETH_CARD_TYPE_OSX) && + qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { + rc = qeth_setadpparms_set_access_ctrl(card, + card->options.isolation); + if (rc) { + QETH_DBF_MESSAGE(3, + "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n", + card->gdev->dev.kobj.name, + rc); + } + } else if (card->options.isolation != ISOLATION_MODE_NONE) { + card->options.isolation = ISOLATION_MODE_NONE; + + dev_err(&card->gdev->dev, "Adapter does not " + "support QDIO data connection isolation\n"); + rc = -EOPNOTSUPP; + } + return rc; +} +EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online); + +void qeth_tx_timeout(struct net_device *dev) +{ + struct qeth_card *card; + + card = dev->ml_priv; + QETH_CARD_TEXT(card, 4, "txtimeo"); + card->stats.tx_errors++; + qeth_schedule_recovery(card); +} +EXPORT_SYMBOL_GPL(qeth_tx_timeout); + +int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) +{ + struct qeth_card *card = dev->ml_priv; + int rc = 0; + + switch (regnum) { + case MII_BMCR: /* 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_CARD_TEXT(card, 4, "sendsnmp"); + + memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); + memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), + &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); + /* 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_CARD_TEXT(card, 3, "snpcmdcb"); + + cmd = (struct qeth_ipa_cmd *) sdata; + data = (unsigned char *)((char *)cmd - reply->offset); + qinfo = (struct qeth_arp_query_info *) reply->param; + snmp = &cmd->data.setadapterparms.data.snmp; + + if (cmd->hdr.return_code) { + QETH_CARD_TEXT_(card, 4, "scer1%i", cmd->hdr.return_code); + return 0; + } + if (cmd->data.setadapterparms.hdr.return_code) { + cmd->hdr.return_code = + cmd->data.setadapterparms.hdr.return_code; + QETH_CARD_TEXT_(card, 4, "scer2%i", cmd->hdr.return_code); + return 0; + } + data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); + if (cmd->data.setadapterparms.hdr.seq_no == 1) + data_len -= (__u16)((char *)&snmp->data - (char *)cmd); + else + data_len -= (__u16)((char *)&snmp->request - (char *)cmd); + + /* check if there is enough room in userspace */ + if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { + QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM); + cmd->hdr.return_code = IPA_RC_ENOMEM; + return 0; + } + QETH_CARD_TEXT_(card, 4, "snore%i", + cmd->data.setadapterparms.hdr.used_total); + QETH_CARD_TEXT_(card, 4, "sseqn%i", + cmd->data.setadapterparms.hdr.seq_no); + /*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_CARD_TEXT_(card, 4, "srtot%i", + cmd->data.setadapterparms.hdr.used_total); + QETH_CARD_TEXT_(card, 4, "srseq%i", + cmd->data.setadapterparms.hdr.seq_no); + if (cmd->data.setadapterparms.hdr.seq_no < + cmd->data.setadapterparms.hdr.used_total) + return 1; + return 0; +} + +int qeth_snmp_command(struct qeth_card *card, char __user *udata) +{ + struct qeth_cmd_buffer *iob; + struct qeth_ipa_cmd *cmd; + struct qeth_snmp_ureq *ureq; + int req_len; + struct qeth_arp_query_info qinfo = {0, }; + int rc = 0; + + QETH_CARD_TEXT(card, 3, "snmpcmd"); + + if (card->info.guestlan) + return -EOPNOTSUPP; + + if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && + (!card->options.layer2)) { + return -EOPNOTSUPP; + } + /* 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 = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr)); + if (IS_ERR(ureq)) { + QETH_CARD_TEXT(card, 2, "snmpnome"); + return PTR_ERR(ureq); + } + qinfo.udata_len = ureq->hdr.data_len; + qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); + if (!qinfo.udata) { + kfree(ureq); + return -ENOMEM; + } + qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); + + iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, + QETH_SNMP_SETADP_CMDLENGTH + req_len); + cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); + memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); + rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, + qeth_snmp_command_cb, (void *)&qinfo); + if (rc) + QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", + QETH_CARD_IFNAME(card), rc); + else { + if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) + rc = -EFAULT; + } + + kfree(ureq); + kfree(qinfo.udata); + return rc; +} +EXPORT_SYMBOL_GPL(qeth_snmp_command); + +static int qeth_setadpparms_query_oat_cb(struct qeth_card *card, + struct qeth_reply *reply, unsigned long data) +{ + struct qeth_ipa_cmd *cmd; + struct qeth_qoat_priv *priv; + char *resdata; + int resdatalen; + + QETH_CARD_TEXT(card, 3, "qoatcb"); + + cmd = (struct qeth_ipa_cmd *)data; + priv = (struct qeth_qoat_priv *)reply->param; + resdatalen = cmd->data.setadapterparms.hdr.cmdlength; + resdata = (char *)data + 28; + + if (resdatalen > (priv->buffer_len - priv->response_len)) { + cmd->hdr.return_code = IPA_RC_FFFF; + return 0; + } + + memcpy((priv->buffer + priv->response_len), resdata, + resdatalen); + priv->response_len += resdatalen; + + if (cmd->data.setadapterparms.hdr.seq_no < + cmd->data.setadapterparms.hdr.used_total) + return 1; + return 0; +} + +int qeth_query_oat_command(struct qeth_card *card, char __user *udata) +{ + int rc = 0; + struct qeth_cmd_buffer *iob; + struct qeth_ipa_cmd *cmd; + struct qeth_query_oat *oat_req; + struct qeth_query_oat_data oat_data; + struct qeth_qoat_priv priv; + void __user *tmp; + + QETH_CARD_TEXT(card, 3, "qoatcmd"); + + if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) { + rc = -EOPNOTSUPP; + goto out; + } + + if (copy_from_user(&oat_data, udata, + sizeof(struct qeth_query_oat_data))) { + rc = -EFAULT; + goto out; + } + + priv.buffer_len = oat_data.buffer_len; + priv.response_len = 0; + priv.buffer = kzalloc(oat_data.buffer_len, GFP_KERNEL); + if (!priv.buffer) { + rc = -ENOMEM; + goto out; + } + + iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT, + sizeof(struct qeth_ipacmd_setadpparms_hdr) + + sizeof(struct qeth_query_oat)); + cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); + oat_req = &cmd->data.setadapterparms.data.query_oat; + oat_req->subcmd_code = oat_data.command; + + rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb, + &priv); + if (!rc) { + if (is_compat_task()) + tmp = compat_ptr(oat_data.ptr); + else + tmp = (void __user *)(unsigned long)oat_data.ptr; + + if (copy_to_user(tmp, priv.buffer, + priv.response_len)) { + rc = -EFAULT; + goto out_free; + } + + oat_data.response_len = priv.response_len; + + if (copy_to_user(udata, &oat_data, + sizeof(struct qeth_query_oat_data))) + rc = -EFAULT; + } else + if (rc == IPA_RC_FFFF) + rc = -EFAULT; + +out_free: + kfree(priv.buffer); +out: + return rc; +} +EXPORT_SYMBOL_GPL(qeth_query_oat_command); + +static inline int qeth_get_qdio_q_format(struct qeth_card *card) +{ + switch (card->info.type) { + case QETH_CARD_TYPE_IQD: + return 2; + default: + return 0; + } +} + +static void qeth_determine_capabilities(struct qeth_card *card) +{ + int rc; + int length; + char *prcd; + struct ccw_device *ddev; + int ddev_offline = 0; + + QETH_DBF_TEXT(SETUP, 2, "detcapab"); + ddev = CARD_DDEV(card); + if (!ddev->online) { + ddev_offline = 1; + rc = ccw_device_set_online(ddev); + if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); + goto out; + } + } + + rc = qeth_read_conf_data(card, (void **) &prcd, &length); + if (rc) { + QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", + dev_name(&card->gdev->dev), rc); + QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); + goto out_offline; + } + qeth_configure_unitaddr(card, prcd); + if (ddev_offline) + qeth_configure_blkt_default(card, prcd); + kfree(prcd); + + rc = qdio_get_ssqd_desc(ddev, &card->ssqd); + if (rc) + QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); + + QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt); + QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac1); + QETH_DBF_TEXT_(SETUP, 2, "%d", card->ssqd.qdioac3); + QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt); + if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) || + ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) || + ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) { + dev_info(&card->gdev->dev, + "Completion Queueing supported\n"); + } else { + card->options.cq = QETH_CQ_NOTAVAILABLE; + } + + +out_offline: + if (ddev_offline == 1) + ccw_device_set_offline(ddev); +out: + return; +} + +static inline void qeth_qdio_establish_cq(struct qeth_card *card, + struct qdio_buffer **in_sbal_ptrs, + void (**queue_start_poll) (struct ccw_device *, int, unsigned long)) { + int i; + + if (card->options.cq == QETH_CQ_ENABLED) { + int offset = QDIO_MAX_BUFFERS_PER_Q * + (card->qdio.no_in_queues - 1); + i = QDIO_MAX_BUFFERS_PER_Q * (card->qdio.no_in_queues - 1); + for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { + in_sbal_ptrs[offset + i] = (struct qdio_buffer *) + virt_to_phys(card->qdio.c_q->bufs[i].buffer); + } + + queue_start_poll[card->qdio.no_in_queues - 1] = NULL; + } +} + +static int qeth_qdio_establish(struct qeth_card *card) +{ + struct qdio_initialize init_data; + char *qib_param_field; + struct qdio_buffer **in_sbal_ptrs; + void (**queue_start_poll) (struct ccw_device *, int, unsigned long); + struct qdio_buffer **out_sbal_ptrs; + int i, j, k; + int rc = 0; + + QETH_DBF_TEXT(SETUP, 2, "qdioest"); + + qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char), + GFP_KERNEL); + if (!qib_param_field) { + rc = -ENOMEM; + goto out_free_nothing; + } + + qeth_create_qib_param_field(card, qib_param_field); + qeth_create_qib_param_field_blkt(card, qib_param_field); + + in_sbal_ptrs = kzalloc(card->qdio.no_in_queues * + QDIO_MAX_BUFFERS_PER_Q * sizeof(void *), + GFP_KERNEL); + if (!in_sbal_ptrs) { + rc = -ENOMEM; + goto out_free_qib_param; + } + for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) { + in_sbal_ptrs[i] = (struct qdio_buffer *) + virt_to_phys(card->qdio.in_q->bufs[i].buffer); + } + + queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues, + GFP_KERNEL); + if (!queue_start_poll) { + rc = -ENOMEM; + goto out_free_in_sbals; + } + for (i = 0; i < card->qdio.no_in_queues; ++i) + queue_start_poll[i] = card->discipline.start_poll; + + qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); + + out_sbal_ptrs = + kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q * + sizeof(void *), GFP_KERNEL); + if (!out_sbal_ptrs) { + rc = -ENOMEM; + goto out_free_queue_start_poll; + } + for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) + for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { + out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( + card->qdio.out_qs[i]->bufs[j]->buffer); + } + + memset(&init_data, 0, sizeof(struct qdio_initialize)); + init_data.cdev = CARD_DDEV(card); + init_data.q_format = qeth_get_qdio_q_format(card); + init_data.qib_param_field_format = 0; + init_data.qib_param_field = qib_param_field; + init_data.no_input_qs = card->qdio.no_in_queues; + init_data.no_output_qs = card->qdio.no_out_queues; + init_data.input_handler = card->discipline.input_handler; + init_data.output_handler = card->discipline.output_handler; + init_data.queue_start_poll_array = queue_start_poll; + init_data.int_parm = (unsigned long) card; + init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; + init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; + init_data.output_sbal_state_array = card->qdio.out_bufstates; + init_data.scan_threshold = + (card->info.type == QETH_CARD_TYPE_IQD) ? 8 : 32; + + if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, + QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { + rc = qdio_allocate(&init_data); + if (rc) { + atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); + goto out; + } + rc = qdio_establish(&init_data); + if (rc) { + atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); + qdio_free(CARD_DDEV(card)); + } + } + + switch (card->options.cq) { + case QETH_CQ_ENABLED: + dev_info(&card->gdev->dev, "Completion Queue support enabled"); + break; + case QETH_CQ_DISABLED: + dev_info(&card->gdev->dev, "Completion Queue support disabled"); + break; + default: + break; + } +out: + kfree(out_sbal_ptrs); +out_free_queue_start_poll: + kfree(queue_start_poll); +out_free_in_sbals: + kfree(in_sbal_ptrs); +out_free_qib_param: + kfree(qib_param_field); +out_free_nothing: + return rc; +} + +static void qeth_core_free_card(struct qeth_card *card) +{ + + QETH_DBF_TEXT(SETUP, 2, "freecrd"); + QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); + qeth_clean_channel(&card->read); + qeth_clean_channel(&card->write); + if (card->dev) + free_netdev(card->dev); + kfree(card->ip_tbd_list); + qeth_free_qdio_buffers(card); + unregister_service_level(&card->qeth_service_level); + kfree(card); +} + +static struct ccw_device_id qeth_ids[] = { + {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01), + .driver_info = QETH_CARD_TYPE_OSD}, + {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05), + .driver_info = QETH_CARD_TYPE_IQD}, + {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06), + .driver_info = QETH_CARD_TYPE_OSN}, + {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03), + .driver_info = QETH_CARD_TYPE_OSM}, + {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02), + .driver_info = QETH_CARD_TYPE_OSX}, + {}, +}; +MODULE_DEVICE_TABLE(ccw, qeth_ids); + +static struct ccw_driver qeth_ccw_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "qeth", + }, + .ids = qeth_ids, + .probe = ccwgroup_probe_ccwdev, + .remove = ccwgroup_remove_ccwdev, +}; + +static int qeth_core_driver_group(const char *buf, struct device *root_dev, + unsigned long driver_id) +{ + return ccwgroup_create_from_string(root_dev, driver_id, + &qeth_ccw_driver, 3, buf); +} + +int qeth_core_hardsetup_card(struct qeth_card *card) +{ + int retries = 0; + int rc; + + QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); + atomic_set(&card->force_alloc_skb, 0); + qeth_get_channel_path_desc(card); +retry: + if (retries) + QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", + dev_name(&card->gdev->dev)); + ccw_device_set_offline(CARD_DDEV(card)); + ccw_device_set_offline(CARD_WDEV(card)); + ccw_device_set_offline(CARD_RDEV(card)); + rc = ccw_device_set_online(CARD_RDEV(card)); + if (rc) + goto retriable; + rc = ccw_device_set_online(CARD_WDEV(card)); + if (rc) + goto retriable; + rc = ccw_device_set_online(CARD_DDEV(card)); + if (rc) + goto retriable; + rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); +retriable: + if (rc == -ERESTARTSYS) { + QETH_DBF_TEXT(SETUP, 2, "break1"); + return rc; + } else if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); + if (++retries > 3) + goto out; + else + goto retry; + } + qeth_determine_capabilities(card); + qeth_init_tokens(card); + qeth_init_func_level(card); + rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb); + if (rc == -ERESTARTSYS) { + QETH_DBF_TEXT(SETUP, 2, "break2"); + return rc; + } else if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); + if (--retries < 0) + goto out; + else + goto retry; + } + rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb); + if (rc == -ERESTARTSYS) { + QETH_DBF_TEXT(SETUP, 2, "break3"); + return rc; + } else if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); + if (--retries < 0) + goto out; + else + goto retry; + } + card->read_or_write_problem = 0; + rc = qeth_mpc_initialize(card); + if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); + goto out; + } + + card->options.ipa4.supported_funcs = 0; + card->options.adp.supported_funcs = 0; + card->info.diagass_support = 0; + qeth_query_ipassists(card, QETH_PROT_IPV4); + if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) + qeth_query_setadapterparms(card); + if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) + qeth_query_setdiagass(card); + return 0; +out: + dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " + "an error on the device\n"); + QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", + dev_name(&card->gdev->dev), rc); + return rc; +} +EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); + +static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer, + struct qdio_buffer_element *element, + struct sk_buff **pskb, int offset, int *pfrag, int data_len) +{ + struct page *page = virt_to_page(element->addr); + if (*pskb == NULL) { + if (qethbuffer->rx_skb) { + /* only if qeth_card.options.cq == QETH_CQ_ENABLED */ + *pskb = qethbuffer->rx_skb; + qethbuffer->rx_skb = NULL; + } else { + *pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN); + if (!(*pskb)) + return -ENOMEM; + } + + skb_reserve(*pskb, ETH_HLEN); + if (data_len <= QETH_RX_PULL_LEN) { + memcpy(skb_put(*pskb, data_len), element->addr + offset, + data_len); + } else { + get_page(page); + memcpy(skb_put(*pskb, QETH_RX_PULL_LEN), + element->addr + offset, QETH_RX_PULL_LEN); + skb_fill_page_desc(*pskb, *pfrag, page, + offset + QETH_RX_PULL_LEN, + data_len - QETH_RX_PULL_LEN); + (*pskb)->data_len += data_len - QETH_RX_PULL_LEN; + (*pskb)->len += data_len - QETH_RX_PULL_LEN; + (*pskb)->truesize += data_len - QETH_RX_PULL_LEN; + (*pfrag)++; + } + } else { + get_page(page); + skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len); + (*pskb)->data_len += data_len; + (*pskb)->len += data_len; + (*pskb)->truesize += data_len; + (*pfrag)++; + } + + + return 0; +} + +struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, + struct qeth_qdio_buffer *qethbuffer, + struct qdio_buffer_element **__element, int *__offset, + struct qeth_hdr **hdr) +{ + struct qdio_buffer_element *element = *__element; + struct qdio_buffer *buffer = qethbuffer->buffer; + int offset = *__offset; + struct sk_buff *skb = NULL; + int skb_len = 0; + void *data_ptr; + int data_len; + int headroom = 0; + int use_rx_sg = 0; + int frag = 0; + + /* 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); + switch ((*hdr)->hdr.l2.id) { + case QETH_HEADER_TYPE_LAYER2: + skb_len = (*hdr)->hdr.l2.pkt_length; + break; + case QETH_HEADER_TYPE_LAYER3: + skb_len = (*hdr)->hdr.l3.length; + if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) || + (card->info.link_type == QETH_LINK_TYPE_HSTR)) + headroom = TR_HLEN; + else + headroom = ETH_HLEN; + break; + case QETH_HEADER_TYPE_OSN: + skb_len = (*hdr)->hdr.osn.pdu_length; + headroom = sizeof(struct qeth_hdr); + break; + default: + break; + } + + if (!skb_len) + return NULL; + + if (((skb_len >= card->options.rx_sg_cb) && + (!(card->info.type == QETH_CARD_TYPE_OSN)) && + (!atomic_read(&card->force_alloc_skb))) || + (card->options.cq == QETH_CQ_ENABLED)) { + use_rx_sg = 1; + } else { + skb = dev_alloc_skb(skb_len + headroom); + if (!skb) + goto no_mem; + if (headroom) + skb_reserve(skb, headroom); + } + + data_ptr = element->addr + offset; + while (skb_len) { + data_len = min(skb_len, (int)(element->length - offset)); + if (data_len) { + if (use_rx_sg) { + if (qeth_create_skb_frag(qethbuffer, element, + &skb, offset, &frag, data_len)) + goto no_mem; + } else { + memcpy(skb_put(skb, data_len), data_ptr, + data_len); + } + } + skb_len -= data_len; + if (skb_len) { + if (qeth_is_last_sbale(element)) { + QETH_CARD_TEXT(card, 4, "unexeob"); + QETH_CARD_HEX(card, 2, buffer, sizeof(void *)); + dev_kfree_skb_any(skb); + card->stats.rx_errors++; + return NULL; + } + element++; + offset = 0; + data_ptr = element->addr; + } else { + offset += data_len; + } + } + *__element = element; + *__offset = offset; + if (use_rx_sg && card->options.performance_stats) { + card->perf_stats.sg_skbs_rx++; + card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags; + } + return skb; +no_mem: + if (net_ratelimit()) { + QETH_CARD_TEXT(card, 2, "noskbmem"); + } + card->stats.rx_dropped++; + return NULL; +} +EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); + +static void qeth_unregister_dbf_views(void) +{ + int x; + for (x = 0; x < QETH_DBF_INFOS; x++) { + debug_unregister(qeth_dbf[x].id); + qeth_dbf[x].id = NULL; + } +} + +void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...) +{ + char dbf_txt_buf[32]; + va_list args; + + if (level > id->level) + return; + va_start(args, fmt); + vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); + va_end(args); + debug_text_event(id, level, dbf_txt_buf); +} +EXPORT_SYMBOL_GPL(qeth_dbf_longtext); + +static int qeth_register_dbf_views(void) +{ + int ret; + int x; + + for (x = 0; x < QETH_DBF_INFOS; x++) { + /* 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; + mutex_lock(&qeth_mod_mutex); + switch (discipline) { + case QETH_DISCIPLINE_LAYER3: + card->discipline.ccwgdriver = try_then_request_module( + symbol_get(qeth_l3_ccwgroup_driver), + "qeth_l3"); + break; + case QETH_DISCIPLINE_LAYER2: + card->discipline.ccwgdriver = try_then_request_module( + symbol_get(qeth_l2_ccwgroup_driver), + "qeth_l2"); + break; + } + if (!card->discipline.ccwgdriver) { + dev_err(&card->gdev->dev, "There is no kernel module to " + "support discipline %d\n", discipline); + rc = -EINVAL; + } + mutex_unlock(&qeth_mod_mutex); + return rc; +} + +void qeth_core_free_discipline(struct qeth_card *card) +{ + if (card->options.layer2) + symbol_put(qeth_l2_ccwgroup_driver); + else + symbol_put(qeth_l3_ccwgroup_driver); + card->discipline.ccwgdriver = NULL; +} + +static int qeth_core_probe_device(struct ccwgroup_device *gdev) +{ + struct qeth_card *card; + struct device *dev; + int rc; + unsigned long flags; + char dbf_name[20]; + + QETH_DBF_TEXT(SETUP, 2, "probedev"); + + dev = &gdev->dev; + if (!get_device(dev)) + return -ENODEV; + + QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); + + card = qeth_alloc_card(); + if (!card) { + QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); + rc = -ENOMEM; + goto err_dev; + } + + snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s", + dev_name(&gdev->dev)); + card->debug = debug_register(dbf_name, 2, 1, 8); + if (!card->debug) { + QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); + rc = -ENOMEM; + goto err_card; + } + debug_register_view(card->debug, &debug_hex_ascii_view); + + card->read.ccwdev = gdev->cdev[0]; + card->write.ccwdev = gdev->cdev[1]; + card->data.ccwdev = gdev->cdev[2]; + dev_set_drvdata(&gdev->dev, card); + card->gdev = gdev; + gdev->cdev[0]->handler = qeth_irq; + gdev->cdev[1]->handler = qeth_irq; + gdev->cdev[2]->handler = qeth_irq; + + rc = qeth_determine_card_type(card); + if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); + goto err_dbf; + } + rc = qeth_setup_card(card); + if (rc) { + QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); + goto err_dbf; + } + + if (card->info.type == QETH_CARD_TYPE_OSN) + rc = qeth_core_create_osn_attributes(dev); + else + rc = qeth_core_create_device_attributes(dev); + if (rc) + goto err_dbf; + switch (card->info.type) { + case QETH_CARD_TYPE_OSN: + case QETH_CARD_TYPE_OSM: + rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2); + if (rc) + goto err_attr; + rc = card->discipline.ccwgdriver->probe(card->gdev); + if (rc) + goto err_disc; + case QETH_CARD_TYPE_OSD: + case QETH_CARD_TYPE_OSX: + default: + break; + } + + write_lock_irqsave(&qeth_core_card_list.rwlock, flags); + list_add_tail(&card->list, &qeth_core_card_list.list); + write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); + + qeth_determine_capabilities(card); + return 0; + +err_disc: + qeth_core_free_discipline(card); +err_attr: + if (card->info.type == QETH_CARD_TYPE_OSN) + qeth_core_remove_osn_attributes(dev); + else + qeth_core_remove_device_attributes(dev); +err_dbf: + debug_unregister(card->debug); +err_card: + qeth_core_free_card(card); +err_dev: + put_device(dev); + return rc; +} + +static void qeth_core_remove_device(struct ccwgroup_device *gdev) +{ + unsigned long flags; + struct qeth_card *card = dev_get_drvdata(&gdev->dev); + + QETH_DBF_TEXT(SETUP, 2, "removedv"); + + if (card->info.type == QETH_CARD_TYPE_OSN) { + qeth_core_remove_osn_attributes(&gdev->dev); + } else { + qeth_core_remove_device_attributes(&gdev->dev); + } + + if (card->discipline.ccwgdriver) { + card->discipline.ccwgdriver->remove(gdev); + qeth_core_free_discipline(card); + } + + debug_unregister(card->debug); + write_lock_irqsave(&qeth_core_card_list.rwlock, flags); + list_del(&card->list); + write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); + qeth_core_free_card(card); + dev_set_drvdata(&gdev->dev, NULL); + put_device(&gdev->dev); + return; +} + +static int qeth_core_set_online(struct ccwgroup_device *gdev) +{ + struct qeth_card *card = dev_get_drvdata(&gdev->dev); + int rc = 0; + int def_discipline; + + if (!card->discipline.ccwgdriver) { + if (card->info.type == QETH_CARD_TYPE_IQD) + def_discipline = QETH_DISCIPLINE_LAYER3; + else + def_discipline = QETH_DISCIPLINE_LAYER2; + rc = qeth_core_load_discipline(card, def_discipline); + if (rc) + goto err; + rc = card->discipline.ccwgdriver->probe(card->gdev); + if (rc) + goto err; + } + rc = card->discipline.ccwgdriver->set_online(gdev); +err: + return rc; +} + +static int qeth_core_set_offline(struct ccwgroup_device *gdev) +{ + struct qeth_card *card = dev_get_drvdata(&gdev->dev); + return card->discipline.ccwgdriver->set_offline(gdev); +} + +static void qeth_core_shutdown(struct ccwgroup_device *gdev) +{ + struct qeth_card *card = dev_get_drvdata(&gdev->dev); + if (card->discipline.ccwgdriver && + card->discipline.ccwgdriver->shutdown) + card->discipline.ccwgdriver->shutdown(gdev); +} + +static int qeth_core_prepare(struct ccwgroup_device *gdev) +{ + struct qeth_card *card = dev_get_drvdata(&gdev->dev); + if (card->discipline.ccwgdriver && + card->discipline.ccwgdriver->prepare) + return card->discipline.ccwgdriver->prepare(gdev); + return 0; +} + +static void qeth_core_complete(struct ccwgroup_device *gdev) +{ + struct qeth_card *card = dev_get_drvdata(&gdev->dev); + if (card->discipline.ccwgdriver && + card->discipline.ccwgdriver->complete) + card->discipline.ccwgdriver->complete(gdev); +} + +static int qeth_core_freeze(struct ccwgroup_device *gdev) +{ + struct qeth_card *card = dev_get_drvdata(&gdev->dev); + if (card->discipline.ccwgdriver && + card->discipline.ccwgdriver->freeze) + return card->discipline.ccwgdriver->freeze(gdev); + return 0; +} + +static int qeth_core_thaw(struct ccwgroup_device *gdev) +{ + struct qeth_card *card = dev_get_drvdata(&gdev->dev); + if (card->discipline.ccwgdriver && + card->discipline.ccwgdriver->thaw) + return card->discipline.ccwgdriver->thaw(gdev); + return 0; +} + +static int qeth_core_restore(struct ccwgroup_device *gdev) +{ + struct qeth_card *card = dev_get_drvdata(&gdev->dev); + if (card->discipline.ccwgdriver && + card->discipline.ccwgdriver->restore) + return card->discipline.ccwgdriver->restore(gdev); + return 0; +} + +static struct ccwgroup_driver qeth_core_ccwgroup_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "qeth", + }, + .driver_id = 0xD8C5E3C8, + .probe = qeth_core_probe_device, + .remove = qeth_core_remove_device, + .set_online = qeth_core_set_online, + .set_offline = qeth_core_set_offline, + .shutdown = qeth_core_shutdown, + .prepare = qeth_core_prepare, + .complete = qeth_core_complete, + .freeze = qeth_core_freeze, + .thaw = qeth_core_thaw, + .restore = qeth_core_restore, +}; + +static ssize_t +qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf, + size_t count) +{ + int err; + err = qeth_core_driver_group(buf, qeth_core_root_dev, + qeth_core_ccwgroup_driver.driver_id); + if (err) + return err; + else + return count; +} + +static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store); + +static struct { + const char str[ETH_GSTRING_LEN]; +} qeth_ethtool_stats_keys[] = { +/* 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 poll time"}, + {"rx poll 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"}, + {"tx csum"}, + {"tx lin"}, + {"cq handler count"}, + {"cq handler time"} +}; + +int qeth_core_get_sset_count(struct net_device *dev, int stringset) +{ + switch (stringset) { + case ETH_SS_STATS: + return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN); + default: + return -EINVAL; + } +} +EXPORT_SYMBOL_GPL(qeth_core_get_sset_count); + +void qeth_core_get_ethtool_stats(struct net_device *dev, + struct ethtool_stats *stats, u64 *data) +{ + struct qeth_card *card = dev->ml_priv; + data[0] = card->stats.rx_packets - + card->perf_stats.initial_rx_packets; + data[1] = card->perf_stats.bufs_rec; + data[2] = card->stats.tx_packets - + card->perf_stats.initial_tx_packets; + data[3] = card->perf_stats.bufs_sent; + data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets + - card->perf_stats.skbs_sent_pack; + data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack; + data[6] = card->perf_stats.skbs_sent_pack; + data[7] = card->perf_stats.bufs_sent_pack; + data[8] = card->perf_stats.sg_skbs_sent; + data[9] = card->perf_stats.sg_frags_sent; + data[10] = card->perf_stats.sg_skbs_rx; + data[11] = card->perf_stats.sg_frags_rx; + data[12] = card->perf_stats.sg_alloc_page_rx; + data[13] = (card->perf_stats.large_send_bytes >> 10); + data[14] = card->perf_stats.large_send_cnt; + data[15] = card->perf_stats.sc_dp_p; + data[16] = card->perf_stats.sc_p_dp; + data[17] = QETH_LOW_WATERMARK_PACK; + data[18] = QETH_HIGH_WATERMARK_PACK; + data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers); + data[20] = (card->qdio.no_out_queues > 1) ? + atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0; + data[21] = (card->qdio.no_out_queues > 2) ? + atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0; + data[22] = (card->qdio.no_out_queues > 3) ? + atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0; + data[23] = card->perf_stats.inbound_time; + data[24] = card->perf_stats.inbound_cnt; + data[25] = card->perf_stats.inbound_do_qdio_time; + data[26] = card->perf_stats.inbound_do_qdio_cnt; + data[27] = card->perf_stats.outbound_handler_time; + data[28] = card->perf_stats.outbound_handler_cnt; + data[29] = card->perf_stats.outbound_time; + data[30] = card->perf_stats.outbound_cnt; + data[31] = card->perf_stats.outbound_do_qdio_time; + data[32] = card->perf_stats.outbound_do_qdio_cnt; + data[33] = card->perf_stats.tx_csum; + data[34] = card->perf_stats.tx_lin; + data[35] = card->perf_stats.cq_cnt; + data[36] = card->perf_stats.cq_time; +} +EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats); + +void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data) +{ + switch (stringset) { + case ETH_SS_STATS: + memcpy(data, &qeth_ethtool_stats_keys, + sizeof(qeth_ethtool_stats_keys)); + break; + default: + WARN_ON(1); + break; + } +} +EXPORT_SYMBOL_GPL(qeth_core_get_strings); + +void qeth_core_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *info) +{ + struct qeth_card *card = dev->ml_priv; + if (card->options.layer2) + strcpy(info->driver, "qeth_l2"); + else + strcpy(info->driver, "qeth_l3"); + + strcpy(info->version, "1.0"); + strcpy(info->fw_version, card->info.mcl_level); + sprintf(info->bus_info, "%s/%s/%s", + CARD_RDEV_ID(card), + CARD_WDEV_ID(card), + CARD_DDEV_ID(card)); +} +EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo); + +int qeth_core_ethtool_get_settings(struct net_device *netdev, + struct ethtool_cmd *ecmd) +{ + struct qeth_card *card = netdev->ml_priv; + enum qeth_link_types link_type; + + if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan)) + link_type = QETH_LINK_TYPE_10GBIT_ETH; + else + link_type = card->info.link_type; + + ecmd->transceiver = XCVR_INTERNAL; + ecmd->supported = SUPPORTED_Autoneg; + ecmd->advertising = ADVERTISED_Autoneg; + ecmd->duplex = DUPLEX_FULL; + ecmd->autoneg = AUTONEG_ENABLE; + + switch (link_type) { + case QETH_LINK_TYPE_FAST_ETH: + case QETH_LINK_TYPE_LANE_ETH100: + ecmd->supported |= SUPPORTED_10baseT_Half | + SUPPORTED_10baseT_Full | + SUPPORTED_100baseT_Half | + SUPPORTED_100baseT_Full | + SUPPORTED_TP; + ecmd->advertising |= ADVERTISED_10baseT_Half | + ADVERTISED_10baseT_Full | + ADVERTISED_100baseT_Half | + ADVERTISED_100baseT_Full | + ADVERTISED_TP; + ecmd->speed = SPEED_100; + ecmd->port = PORT_TP; + break; + + case QETH_LINK_TYPE_GBIT_ETH: + case QETH_LINK_TYPE_LANE_ETH1000: + ecmd->supported |= SUPPORTED_10baseT_Half | + SUPPORTED_10baseT_Full | + SUPPORTED_100baseT_Half | + SUPPORTED_100baseT_Full | + SUPPORTED_1000baseT_Half | + SUPPORTED_1000baseT_Full | + SUPPORTED_FIBRE; + ecmd->advertising |= ADVERTISED_10baseT_Half | + ADVERTISED_10baseT_Full | + ADVERTISED_100baseT_Half | + ADVERTISED_100baseT_Full | + ADVERTISED_1000baseT_Half | + ADVERTISED_1000baseT_Full | + ADVERTISED_FIBRE; + ecmd->speed = SPEED_1000; + ecmd->port = PORT_FIBRE; + break; + + case QETH_LINK_TYPE_10GBIT_ETH: + ecmd->supported |= SUPPORTED_10baseT_Half | + SUPPORTED_10baseT_Full | + SUPPORTED_100baseT_Half | + SUPPORTED_100baseT_Full | + SUPPORTED_1000baseT_Half | + SUPPORTED_1000baseT_Full | + SUPPORTED_10000baseT_Full | + SUPPORTED_FIBRE; + ecmd->advertising |= ADVERTISED_10baseT_Half | + ADVERTISED_10baseT_Full | + ADVERTISED_100baseT_Half | + ADVERTISED_100baseT_Full | + ADVERTISED_1000baseT_Half | + ADVERTISED_1000baseT_Full | + ADVERTISED_10000baseT_Full | + ADVERTISED_FIBRE; + ecmd->speed = SPEED_10000; + ecmd->port = PORT_FIBRE; + break; + + default: + ecmd->supported |= SUPPORTED_10baseT_Half | + SUPPORTED_10baseT_Full | + SUPPORTED_TP; + ecmd->advertising |= ADVERTISED_10baseT_Half | + ADVERTISED_10baseT_Full | + ADVERTISED_TP; + ecmd->speed = SPEED_10; + ecmd->port = PORT_TP; + } + + return 0; +} +EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings); + +static int __init qeth_core_init(void) +{ + int rc; + + pr_info("loading core functions\n"); + INIT_LIST_HEAD(&qeth_core_card_list.list); + rwlock_init(&qeth_core_card_list.rwlock); + mutex_init(&qeth_mod_mutex); + + rc = qeth_register_dbf_views(); + if (rc) + goto out_err; + rc = ccw_driver_register(&qeth_ccw_driver); + if (rc) + goto ccw_err; + rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); + if (rc) + goto ccwgroup_err; + rc = driver_create_file(&qeth_core_ccwgroup_driver.driver, + &driver_attr_group); + if (rc) + goto driver_err; + qeth_core_root_dev = root_device_register("qeth"); + rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0; + if (rc) + goto register_err; + + qeth_core_header_cache = kmem_cache_create("qeth_hdr", + sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL); + if (!qeth_core_header_cache) { + rc = -ENOMEM; + goto slab_err; + } + + qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf", + sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL); + if (!qeth_qdio_outbuf_cache) { + rc = -ENOMEM; + goto cqslab_err; + } + + return 0; +cqslab_err: + kmem_cache_destroy(qeth_core_header_cache); +slab_err: + root_device_unregister(qeth_core_root_dev); +register_err: + driver_remove_file(&qeth_core_ccwgroup_driver.driver, + &driver_attr_group); +driver_err: + ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); +ccwgroup_err: + ccw_driver_unregister(&qeth_ccw_driver); +ccw_err: + QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc); + qeth_unregister_dbf_views(); +out_err: + pr_err("Initializing the qeth device driver failed\n"); + return rc; +} + +static void __exit qeth_core_exit(void) +{ + root_device_unregister(qeth_core_root_dev); + driver_remove_file(&qeth_core_ccwgroup_driver.driver, + &driver_attr_group); + ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); + ccw_driver_unregister(&qeth_ccw_driver); + kmem_cache_destroy(qeth_qdio_outbuf_cache); + kmem_cache_destroy(qeth_core_header_cache); + qeth_unregister_dbf_views(); + pr_info("core functions removed\n"); +} + +module_init(qeth_core_init); +module_exit(qeth_core_exit); +MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); +MODULE_DESCRIPTION("qeth core functions"); +MODULE_LICENSE("GPL"); |