| /* |
| * 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 <net/dsfield.h> |
| |
| #include <asm/ebcdic.h> |
| #include <asm/chpid.h> |
| #include <asm/io.h> |
| #include <asm/sysinfo.h> |
| #include <asm/compat.h> |
| #include <asm/diag.h> |
| #include <asm/cio.h> |
| #include <asm/ccwdev.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, 11 * sizeof(long), 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 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); |
| |
| struct workqueue_struct *qeth_wq; |
| EXPORT_SYMBOL_GPL(qeth_wq); |
| |
| int qeth_card_hw_is_reachable(struct qeth_card *card) |
| { |
| return (card->state == CARD_STATE_SOFTSETUP) || |
| (card->state == CARD_STATE_UP); |
| } |
| EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable); |
| |
| static void qeth_close_dev_handler(struct work_struct *work) |
| { |
| struct qeth_card *card; |
| |
| card = container_of(work, struct qeth_card, close_dev_work); |
| QETH_CARD_TEXT(card, 2, "cldevhdl"); |
| rtnl_lock(); |
| dev_close(card->dev); |
| rtnl_unlock(); |
| ccwgroup_set_offline(card->gdev); |
| } |
| |
| void qeth_close_dev(struct qeth_card *card) |
| { |
| QETH_CARD_TEXT(card, 2, "cldevsubm"); |
| queue_work(qeth_wq, &card->close_dev_work); |
| } |
| EXPORT_SYMBOL_GPL(qeth_close_dev); |
| |
| static const char *qeth_get_cardname(struct qeth_card *card) |
| { |
| if (card->info.guestlan) { |
| switch (card->info.type) { |
| case QETH_CARD_TYPE_OSD: |
| return " Virtual NIC QDIO"; |
| case QETH_CARD_TYPE_IQD: |
| return " Virtual NIC Hiper"; |
| case QETH_CARD_TYPE_OSM: |
| return " Virtual NIC QDIO - OSM"; |
| case QETH_CARD_TYPE_OSX: |
| return " Virtual NIC 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 "Virt.NIC QDIO"; |
| case QETH_CARD_TYPE_IQD: |
| return "Virt.NIC Hiper"; |
| case QETH_CARD_TYPE_OSM: |
| return "Virt.NIC OSM"; |
| case QETH_CARD_TYPE_OSX: |
| return "Virt.NIC 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_recovery_task(struct qeth_card *card) |
| { |
| card->recovery_task = current; |
| } |
| EXPORT_SYMBOL_GPL(qeth_set_recovery_task); |
| |
| void qeth_clear_recovery_task(struct qeth_card *card) |
| { |
| card->recovery_task = NULL; |
| } |
| EXPORT_SYMBOL_GPL(qeth_clear_recovery_task); |
| |
| static bool qeth_is_recovery_task(const struct qeth_card *card) |
| { |
| return card->recovery_task == current; |
| } |
| |
| 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) |
| { |
| if (qeth_is_recovery_task(card)) |
| return 0; |
| 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 void qeth_free_qdio_queue(struct qeth_qdio_q *q) |
| { |
| if (!q) |
| return; |
| |
| qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); |
| kfree(q); |
| } |
| |
| static struct qeth_qdio_q *qeth_alloc_qdio_queue(void) |
| { |
| struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL); |
| int i; |
| |
| if (!q) |
| return NULL; |
| |
| if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { |
| kfree(q); |
| return NULL; |
| } |
| |
| for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) |
| q->bufs[i].buffer = q->qdio_bufs[i]; |
| |
| QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *)); |
| return q; |
| } |
| |
| static int qeth_cq_init(struct qeth_card *card) |
| { |
| int rc; |
| |
| if (card->options.cq == QETH_CQ_ENABLED) { |
| QETH_DBF_TEXT(SETUP, 2, "cqinit"); |
| qdio_reset_buffers(card->qdio.c_q->qdio_bufs, |
| QDIO_MAX_BUFFERS_PER_Q); |
| 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 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 = qeth_alloc_qdio_queue(); |
| if (!card->qdio.c_q) { |
| rc = -1; |
| goto kmsg_out; |
| } |
| card->qdio.no_in_queues = 2; |
| card->qdio.out_bufstates = |
| 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: |
| qeth_free_qdio_queue(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 void qeth_free_cq(struct qeth_card *card) |
| { |
| if (card->qdio.c_q) { |
| --card->qdio.no_in_queues; |
| qeth_free_qdio_queue(card->qdio.c_q); |
| card->qdio.c_q = NULL; |
| } |
| kfree(card->qdio.out_bufstates); |
| card->qdio.out_bufstates = NULL; |
| } |
| |
| static 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 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; |
| WARN_ON_ONCE(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 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); |
| |
| if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED, |
| QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) { |
| notification = TX_NOTIFY_OK; |
| } else { |
| WARN_ON_ONCE(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: |
| if (cmd->hdr.return_code == |
| IPA_RC_VEPA_TO_VEB_TRANSITION) { |
| dev_err(&card->gdev->dev, |
| "Interface %s is down because the " |
| "adjacent port is no longer in " |
| "reflective relay mode\n", |
| QETH_CARD_IFNAME(card)); |
| qeth_close_dev(card); |
| } else { |
| dev_warn(&card->gdev->dev, |
| "The link for interface %s on CHPID" |
| " 0x%X failed\n", |
| QETH_CARD_IFNAME(card), |
| card->info.chpid); |
| qeth_issue_ipa_msg(cmd, |
| cmd->hdr.return_code, card); |
| } |
| 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_SETBRIDGEPORT_IQD: |
| case IPA_CMD_SETBRIDGEPORT_OSA: |
| case IPA_CMD_ADDRESS_CHANGE_NOTIF: |
| if (card->discipline->control_event_handler |
| (card, cmd)) |
| return cmd; |
| else |
| 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 struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev) |
| { |
| struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *) |
| dev_get_drvdata(&cdev->dev))->dev); |
| return card; |
| } |
| |
| 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 (!card || !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->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 (be16_to_cpu(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 */ |
| WARN_ON_ONCE(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 && |
| be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) { |
| if (skb->sk) { |
| iucv = iucv_sk(skb->sk); |
| iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR); |
| } |
| } |
| refcount_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_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_set_single_write_queues(struct qeth_card *card) |
| { |
| if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && |
| (card->qdio.no_out_queues == 4)) |
| qeth_free_qdio_buffers(card); |
| |
| card->qdio.no_out_queues = 1; |
| if (card->qdio.default_out_queue != 0) |
| dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); |
| |
| card->qdio.default_out_queue = 0; |
| } |
| |
| static void qeth_set_multiple_write_queues(struct qeth_card *card) |
| { |
| if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) && |
| (card->qdio.no_out_queues == 1)) { |
| qeth_free_qdio_buffers(card); |
| card->qdio.default_out_queue = 2; |
| } |
| card->qdio.no_out_queues = 4; |
| } |
| |
| static void qeth_update_from_chp_desc(struct qeth_card *card) |
| { |
| struct ccw_device *ccwdev; |
| struct channel_path_desc *chp_dsc; |
| |
| QETH_DBF_TEXT(SETUP, 2, "chp_desc"); |
| |
| ccwdev = card->data.ccwdev; |
| chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); |
| if (!chp_dsc) |
| goto out; |
| |
| card->info.func_level = 0x4100 + chp_dsc->desc; |
| if (card->info.type == QETH_CARD_TYPE_IQD) |
| goto out; |
| |
| /* CHPP field bit 6 == 1 -> single queue */ |
| if ((chp_dsc->chpp & 0x02) == 0x02) |
| qeth_set_single_write_queues(card); |
| else |
| qeth_set_multiple_write_queues(card); |
| out: |
| 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); |
| } |
| |
| 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.fake_broadcast = 0; |
| 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 void qeth_buffer_reclaim_work(struct work_struct *); |
| 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->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); |
| INIT_WORK(&card->close_dev_work, qeth_close_dev_handler); |
| 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 *)); |
| 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); |
| 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_update_from_chp_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); |
| 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'])); |
| } |
| |
| /* Determine whether the device requires a specific layer discipline */ |
| static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card) |
| { |
| if (card->info.type == QETH_CARD_TYPE_OSM || |
| card->info.type == QETH_CARD_TYPE_OSN) { |
| QETH_DBF_TEXT(SETUP, 3, "force l2"); |
| return QETH_DISCIPLINE_LAYER2; |
| } |
| |
| /* virtual HiperSocket is L3 only: */ |
| if (card->info.guestlan && card->info.type == QETH_CARD_TYPE_IQD) { |
| QETH_DBF_TEXT(SETUP, 3, "force l3"); |
| return QETH_DISCIPLINE_LAYER3; |
| } |
| |
| QETH_DBF_TEXT(SETUP, 3, "force no"); |
| return QETH_DISCIPLINE_UNDETERMINED; |
| } |
| |
| 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] >= 0xF1 && prcd[76] <= 0xF4) { |
| card->info.blkt.time_total = 0; |
| card->info.blkt.inter_packet = 0; |
| card->info.blkt.inter_packet_jumbo = 0; |
| } else { |
| card->info.blkt.time_total = 250; |
| card->info.blkt.inter_packet = 5; |
| card->info.blkt.inter_packet_jumbo = 15; |
| } |
| } |
| |
| 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); |
| if (!iob) |
| return -ENOMEM; |
| 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); |
| if (!iob) |
| return -ENOMEM; |
| 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; |
| } |
| |
| 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); |
| |
| /** |
| * qeth_send_control_data() - send control command to the card |
| * @card: qeth_card structure pointer |
| * @len: size of the command buffer |
| * @iob: qeth_cmd_buffer pointer |
| * @reply_cb: callback function pointer |
| * @cb_card: pointer to the qeth_card structure |
| * @cb_reply: pointer to the qeth_reply structure |
| * @cb_cmd: pointer to the original iob for non-IPA |
| * commands, or to the qeth_ipa_cmd structure |
| * for the IPA commands. |
| * @reply_param: private pointer passed to the callback |
| * |
| * Returns the value of the `return_code' field of the response |
| * block returned from the hardware, or other error indication. |
| * Value of zero indicates successful execution of the command. |
| * |
| * Callback function gets called one or more times, with cb_cmd |
| * pointing to the response returned by the hardware. Callback |
| * function must return non-zero if more reply blocks are expected, |
| * and zero if the last or only reply block is received. Callback |
| * function can get the value of the reply_param pointer from the |
| * field 'param' of the structure qeth_reply. |
| */ |
| |
| int qeth_send_control_data(struct qeth_card *card, int len, |
| struct qeth_cmd_buffer *iob, |
| int (*reply_cb)(struct qeth_card *cb_card, |
| struct qeth_reply *cb_reply, |
| unsigned long cb_cmd), |
| 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 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 card->options.layer2 ? 1500 : 1492; |
| } |
| case QETH_CARD_TYPE_OSM: |
| case QETH_CARD_TYPE_OSX: |
| return card->options.layer2 ? 1500 : 1492; |
| default: |
| return 1500; |
| } |
| } |
| |
| static 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 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.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU( |
| iob->data); |
| card->info.initial_mtu = min(card->info.max_mtu, |
| qeth_get_initial_mtu_for_card(card)); |
| 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); |
| rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob, |
| qeth_ulp_enable_cb, NULL); |
| return rc; |
| |
| } |
| |
| static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, |
| unsigned long data) |
| { |
| struct qeth_cmd_buffer *iob; |
| |
| QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); |
| |
| iob = (struct qeth_cmd_buffer *) data; |
| memcpy(&card->token.ulp_connection_r, |
| QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), |
| QETH_MPC_TOKEN_LENGTH); |
| 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 0; |
| } |
| |
| static int qeth_ulp_setup(struct qeth_card *card) |
| { |
| int rc; |
| __u16 temp; |
| struct qeth_cmd_buffer *iob; |
| struct ccw_dev_id dev_id; |
| |
| QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); |
| |
| iob = qeth_wait_for_buffer(&card->write); |
| memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); |
| |
| memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), |
| &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); |
| memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), |
| &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); |
| memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), |
| &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); |
| |
| ccw_device_get_id(CARD_DDEV(card), &dev_id); |
| memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); |
| temp = (card->info.cula << 8) + card->info.unit_addr2; |
| memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); |
| rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, |
| qeth_ulp_setup_cb, NULL); |
| return rc; |
| } |
| |
| static int qeth_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 void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q) |
| { |
| if (!q) |
| return; |
| |
| qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); |
| kfree(q); |
| } |
| |
| static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void) |
| { |
| struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL); |
| |
| if (!q) |
| return NULL; |
| |
| if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) { |
| kfree(q); |
| return NULL; |
| } |
| return q; |
| } |
| |
| 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; |
| |
| QETH_DBF_TEXT(SETUP, 2, "inq"); |
| card->qdio.in_q = qeth_alloc_qdio_queue(); |
| if (!card->qdio.in_q) |
| goto out_nomem; |
| |
| /* 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] = qeth_alloc_qdio_out_buf(); |
| 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) { |
| WARN_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) { |
| qeth_free_qdio_out_buf(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: |
| qeth_free_qdio_queue(card->qdio.in_q); |
| card->qdio.in_q = NULL; |
| out_nomem: |
| atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); |
| return -ENOMEM; |
| } |
| |
| 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) { |
| if (card->qdio.in_q->bufs[j].rx_skb) |
| dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb); |
| } |
| qeth_free_qdio_queue(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); |
| qeth_free_qdio_out_buf(card->qdio.out_qs[i]); |
| } |
| kfree(card->qdio.out_qs); |
| card->qdio.out_qs = NULL; |
| } |
| } |
| |
| 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); |
| qdio_free(CARD_DDEV(card)); |
| return rc; |
| } |
| |
| 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]); |
| 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); |
| } |
| 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)); |
| } |
| 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 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 */ |
| qdio_reset_buffers(card->qdio.in_q->qdio_bufs, |
| QDIO_MAX_BUFFERS_PER_Q); |
| qeth_initialize_working_pool_list(card); |
| /*give only as many buffers to hardware as we have buffer pool entries*/ |
|