| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Frank Blaschka | 14843 | 44.65% | 22 | 7.86% |
| Julian Wiedmann | 8600 | 25.87% | 136 | 48.57% |
| Einar Lueck | 4637 | 13.95% | 4 | 1.43% |
| Thomas Richter | 1211 | 3.64% | 9 | 3.21% |
| Stefan Raspl | 1125 | 3.38% | 16 | 5.71% |
| Ursula Braun-Krahl | 881 | 2.65% | 22 | 7.86% |
| Sebastian Ott | 613 | 1.84% | 13 | 4.64% |
| Peter Tiedemann | 253 | 0.76% | 3 | 1.07% |
| Eugene Crosser | 243 | 0.73% | 8 | 2.86% |
| Kittipon Meesompop | 227 | 0.68% | 4 | 1.43% |
| Carsten Otte | 226 | 0.68% | 4 | 1.43% |
| Hans Wippel | 107 | 0.32% | 3 | 1.07% |
| Jan Glauber | 97 | 0.29% | 8 | 2.86% |
| Martin Schwidefsky | 73 | 0.22% | 2 | 0.71% |
| Klaus-Dieter Wacker | 34 | 0.10% | 5 | 1.79% |
| Kees Cook | 13 | 0.04% | 1 | 0.36% |
| Kay Sievers | 12 | 0.04% | 1 | 0.36% |
| Heiko Carstens | 9 | 0.03% | 4 | 1.43% |
| Peter Oberparleiter | 8 | 0.02% | 1 | 0.36% |
| Wenjia Zhang | 5 | 0.02% | 1 | 0.36% |
| Elena Reshetova | 3 | 0.01% | 1 | 0.36% |
| Cornelia Huck | 3 | 0.01% | 1 | 0.36% |
| Greg Kroah-Hartman | 3 | 0.01% | 2 | 0.71% |
| Tejun Heo | 3 | 0.01% | 1 | 0.36% |
| Deepa Dinamani | 3 | 0.01% | 1 | 0.36% |
| Ian Campbell | 2 | 0.01% | 1 | 0.36% |
| Johannes Berg | 2 | 0.01% | 1 | 0.36% |
| Jean Delvare | 1 | 0.00% | 1 | 0.36% |
| Julia Lawall | 1 | 0.00% | 1 | 0.36% |
| Mark McLoughlin | 1 | 0.00% | 1 | 0.36% |
| Steffen Maier | 1 | 0.00% | 1 | 0.36% |
| Duan Jiong | 1 | 0.00% | 1 | 0.36% |
| Total | 33241 | 280 |
// SPDX-License-Identifier: GPL-2.0 /* * 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/compat.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/string.h> #include <linux/errno.h> #include <linux/kernel.h> #include <linux/log2.h> #include <linux/ip.h> #include <linux/tcp.h> #include <linux/mii.h> #include <linux/kthread.h> #include <linux/slab.h> #include <linux/if_vlan.h> #include <linux/netdevice.h> #include <linux/netdev_features.h> #include <linux/skbuff.h> #include <linux/vmalloc.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/diag.h> #include <asm/cio.h> #include <asm/ccwdev.h> #include <asm/cpcmd.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 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 struct lock_class_key qdio_out_skb_queue_key; static void qeth_issue_next_read_cb(struct qeth_card *card, struct qeth_channel *channel, struct qeth_cmd_buffer *iob); static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *); static void qeth_free_buffer_pool(struct qeth_card *); static int qeth_qdio_establish(struct qeth_card *); static void qeth_free_qdio_queues(struct qeth_card *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 int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int); 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"); ccwgroup_set_offline(card->gdev); } static const char *qeth_get_cardname(struct qeth_card *card) { if (IS_VM_NIC(card)) { 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 (IS_VM_NIC(card)) { 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_25GBIT_ETH: return "OSD_25GIG"; 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); 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) 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 = kcalloc(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 */ 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; unsigned int i; 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); /* Free dangling allocations. The attached skbs are handled by * qeth_cleanup_handled_pending(). */ for (i = 0; i < aob->sb_count && i < QETH_MAX_BUFFER_ELEMENTS(card); i++) { if (aob->sba[i] && buffer->is_header[i]) kmem_cache_free(qeth_core_header_cache, (void *) aob->sba[i]); } atomic_set(&buffer->state, QETH_QDIO_BUF_HANDLED_DELAYED); qdio_release_aob(aob); } static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue) { return card->options.cq == QETH_CQ_ENABLED && card->qdio.c_q != NULL && queue != 0 && queue == card->qdio.no_in_queues - 1; } static void qeth_setup_ccw(struct ccw1 *ccw, u8 cmd_code, u32 len, void *data) { ccw->cmd_code = cmd_code; ccw->flags = CCW_FLAG_SLI; ccw->count = len; ccw->cda = (__u32) __pa(data); } static int __qeth_issue_next_read(struct qeth_card *card) { struct qeth_channel *channel = &card->read; struct qeth_cmd_buffer *iob; int rc; QETH_CARD_TEXT(card, 5, "issnxrd"); if (channel->state != CH_STATE_UP) return -EIO; iob = qeth_get_buffer(channel); if (!iob) { dev_warn(&card->gdev->dev, "The qeth device driver " "failed to recover an error on the device\n"); QETH_DBF_MESSAGE(2, "issue_next_read on device %x failed: no iob available\n", CARD_DEVID(card)); return -ENOMEM; } qeth_setup_ccw(channel->ccw, CCW_CMD_READ, QETH_BUFSIZE, iob->data); iob->callback = qeth_issue_next_read_cb; QETH_CARD_TEXT(card, 6, "noirqpnd"); rc = ccw_device_start(channel->ccwdev, channel->ccw, (addr_t) iob, 0, 0); if (rc) { QETH_DBF_MESSAGE(2, "error %i on device %x when starting next read ccw!\n", rc, CARD_DEVID(card)); atomic_set(&channel->irq_pending, 0); qeth_release_buffer(channel, iob); card->read_or_write_problem = 1; qeth_schedule_recovery(card); wake_up(&card->wait_q); } return rc; } static int qeth_issue_next_read(struct qeth_card *card) { int ret; spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card))); ret = __qeth_issue_next_read(card); spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card))); return ret; } static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card) { struct qeth_reply *reply; reply = kzalloc(sizeof(*reply), GFP_KERNEL); if (reply) { refcount_set(&reply->refcnt, 1); init_completion(&reply->received); } return reply; } static void qeth_get_reply(struct qeth_reply *reply) { refcount_inc(&reply->refcnt); } static void qeth_put_reply(struct qeth_reply *reply) { if (refcount_dec_and_test(&reply->refcnt)) kfree(reply); } static void qeth_enqueue_reply(struct qeth_card *card, struct qeth_reply *reply) { spin_lock_irq(&card->lock); list_add_tail(&reply->list, &card->cmd_waiter_list); spin_unlock_irq(&card->lock); } static void qeth_dequeue_reply(struct qeth_card *card, struct qeth_reply *reply) { spin_lock_irq(&card->lock); list_del(&reply->list); spin_unlock_irq(&card->lock); } static void qeth_notify_reply(struct qeth_reply *reply, int reason) { reply->rc = reason; complete(&reply->received); } static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, struct qeth_card *card) { const 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) for device %x returned %#x \"%s\"\n", ipa_name, com, CARD_DEVID(card), rc, qeth_get_ipa_msg(rc)); else QETH_DBF_MESSAGE(5, "IPA: %s(%#x) for device %x succeeded\n", ipa_name, com, CARD_DEVID(card)); } static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, struct qeth_ipa_cmd *cmd) { QETH_CARD_TEXT(card, 5, "chkipad"); 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; } /* handle unsolicited event: */ 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)); schedule_work(&card->close_dev_work); } 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); 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); 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; return NULL; case IPA_CMD_MODCCID: return cmd; case IPA_CMD_REGISTER_LOCAL_ADDR: QETH_CARD_TEXT(card, 3, "irla"); return NULL; case IPA_CMD_UNREGISTER_LOCAL_ADDR: QETH_CARD_TEXT(card, 3, "urla"); return NULL; default: QETH_DBF_MESSAGE(2, "Received data is IPA but not a reply!\n"); return cmd; } } void qeth_clear_ipacmd_list(struct qeth_card *card) { struct qeth_reply *reply; unsigned long flags; QETH_CARD_TEXT(card, 4, "clipalst"); spin_lock_irqsave(&card->lock, flags); list_for_each_entry(reply, &card->cmd_waiter_list, list) qeth_notify_reply(reply, -EIO); spin_unlock_irqrestore(&card->lock, flags); } EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); static int qeth_check_idx_response(struct qeth_card *card, unsigned char *buffer) { 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 %#04x\n", buffer[4]); 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_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) { __u8 index; index = channel->io_buf_no; do { if (channel->iob[index].state == BUF_STATE_FREE) { channel->iob[index].state = BUF_STATE_LOCKED; channel->iob[index].timeout = QETH_TIMEOUT; 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; spin_lock_irqsave(&channel->iob_lock, flags); iob->state = BUF_STATE_FREE; iob->callback = NULL; if (iob->reply) { qeth_put_reply(iob->reply); iob->reply = NULL; } spin_unlock_irqrestore(&channel->iob_lock, flags); wake_up(&channel->wait_q); } EXPORT_SYMBOL_GPL(qeth_release_buffer); static void qeth_release_buffer_cb(struct qeth_card *card, struct qeth_channel *channel, struct qeth_cmd_buffer *iob) { qeth_release_buffer(channel, iob); } static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc) { struct qeth_reply *reply = iob->reply; if (reply) qeth_notify_reply(reply, rc); qeth_release_buffer(iob->channel, iob); } 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->io_buf_no = 0; } EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); static void qeth_issue_next_read_cb(struct qeth_card *card, struct qeth_channel *channel, struct qeth_cmd_buffer *iob) { struct qeth_ipa_cmd *cmd = NULL; struct qeth_reply *reply = NULL; struct qeth_reply *r; unsigned long flags; int rc = 0; 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; } if (IS_IPA(iob->data)) { cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); cmd = qeth_check_ipa_data(card, cmd); if (!cmd) goto out; if (IS_OSN(card) && card->osn_info.assist_cb && cmd->hdr.command != IPA_CMD_STARTLAN) { card->osn_info.assist_cb(card->dev, cmd); goto out; } } else { /* non-IPA commands should only flow during initialization */ if (card->state != CARD_STATE_DOWN) goto out; } /* match against pending cmd requests */ spin_lock_irqsave(&card->lock, flags); list_for_each_entry(r, &card->cmd_waiter_list, list) { if ((r->seqno == QETH_IDX_COMMAND_SEQNO) || (cmd && (r->seqno == cmd->hdr.seqno))) { reply = r; /* take the object outside the lock */ qeth_get_reply(reply); break; } } spin_unlock_irqrestore(&card->lock, flags); if (!reply) goto out; if (!reply->callback) { rc = 0; } else { if (cmd) { reply->offset = (u16)((char *)cmd - (char *)iob->data); rc = reply->callback(card, reply, (unsigned long)cmd); } else { rc = reply->callback(card, reply, (unsigned long)iob); } } if (rc <= 0) qeth_notify_reply(reply, rc); qeth_put_reply(reply); 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_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_all(&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 qeth_card *card, struct ccw_device *cdev, struct irb *irb) { int dstat, cstat; char *sense; sense = (char *) irb->ecw; cstat = irb->scsw.cmd.cstat; dstat = irb->scsw.cmd.dstat; if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { QETH_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, "check on channel %x with dstat=%#x, cstat=%#x\n", CCW_DEVID(cdev), 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 int qeth_check_irb_error(struct qeth_card *card, struct ccw_device *cdev, unsigned long intparm, struct irb *irb) { if (!IS_ERR(irb)) return 0; switch (PTR_ERR(irb)) { case -EIO: QETH_DBF_MESSAGE(2, "i/o-error on channel %x\n", CCW_DEVID(cdev)); QETH_CARD_TEXT(card, 2, "ckirberr"); QETH_CARD_TEXT_(card, 2, " rc%d", -EIO); return -EIO; 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); } } return -ETIMEDOUT; default: QETH_DBF_MESSAGE(2, "unknown error %ld on channel %x\n", PTR_ERR(irb), CCW_DEVID(cdev)); 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 *iob = NULL; struct ccwgroup_device *gdev; struct qeth_channel *channel; struct qeth_card *card; /* while we hold the ccwdev lock, this stays valid: */ gdev = dev_get_drvdata(&cdev->dev); card = dev_get_drvdata(&gdev->dev); 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"); } if (qeth_intparm_is_iob(intparm)) iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm); rc = qeth_check_irb_error(card, cdev, intparm, irb); if (rc) { /* IO was terminated, free its resources. */ if (iob) qeth_cancel_cmd(iob, rc); atomic_set(&channel->irq_pending, 0); wake_up(&card->wait_q); return; } 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; } cstat = irb->scsw.cmd.cstat; dstat = irb->scsw.cmd.dstat; 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, "sense data available on channel %x: cstat %#X dstat %#X\n", CCW_DEVID(channel->ccwdev), 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(card, cdev, irb); if (rc) { card->read_or_write_problem = 1; if (iob) qeth_cancel_cmd(iob, 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 (channel == &card->data) return; if (channel == &card->read && channel->state == CH_STATE_UP) __qeth_issue_next_read(card); if (iob && iob->callback) iob->callback(card, iob->channel, iob); 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; skb_queue_walk(&buf->skb_list, skb) { QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification); QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb); if (skb->protocol == htons(ETH_P_AF_IUCV) && skb->sk) iucv_sk(skb->sk)->sk_txnotify(skb, notification); } } static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf) { struct sk_buff *skb; /* release may never happen from within CQ tasklet scope */ WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ); if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING) qeth_notify_skbs(buf->q, buf, TX_NOTIFY_GENERALERROR); while ((skb = __skb_dequeue(&buf->skb_list)) != NULL) consume_skb(skb); } static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, struct qeth_qdio_out_buffer *buf) { 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); qeth_release_skbs(buf); for (i = 0; i < queue->max_elements; ++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; } qeth_scrub_qdio_buffer(buf->buffer, queue->max_elements); buf->next_element_to_fill = 0; atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY); } static void qeth_drain_output_queue(struct qeth_qdio_out_q *q, bool 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]); if (free) { kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]); q->bufs[j] = NULL; } } } void qeth_drain_output_queues(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_drain_output_queue(card->qdio.out_qs[i], false); } } EXPORT_SYMBOL_GPL(qeth_drain_output_queues); 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) { struct ccw_device *cdev = channel->ccwdev; int cnt; QETH_DBF_TEXT(SETUP, 2, "freech"); spin_lock_irq(get_ccwdev_lock(cdev)); cdev->handler = NULL; spin_unlock_irq(get_ccwdev_lock(cdev)); for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) kfree(channel->iob[cnt].data); kfree(channel->ccw); } static int qeth_setup_channel(struct qeth_channel *channel, bool alloc_buffers) { struct ccw_device *cdev = channel->ccwdev; int cnt; QETH_DBF_TEXT(SETUP, 2, "setupch"); channel->ccw = kmalloc(sizeof(struct ccw1), GFP_KERNEL | GFP_DMA); if (!channel->ccw) return -ENOMEM; channel->state = CH_STATE_DOWN; atomic_set(&channel->irq_pending, 0); init_waitqueue_head(&channel->wait_q); spin_lock_irq(get_ccwdev_lock(cdev)); cdev->handler = qeth_irq; spin_unlock_irq(get_ccwdev_lock(cdev)); if (!alloc_buffers) return 0; for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { channel->iob[cnt].data = kmalloc(QETH_BUFSIZE, GFP_KERNEL | GFP_DMA); if (channel->iob[cnt].data == NULL) break; channel->iob[cnt].state = BUF_STATE_FREE; channel->iob[cnt].channel = channel; } if (cnt < QETH_CMD_BUFFER_NO) { qeth_clean_channel(channel); return -ENOMEM; } channel->io_buf_no = 0; spin_lock_init(&channel->iob_lock); return 0; } static int qeth_osa_set_output_queues(struct qeth_card *card, bool single) { unsigned int count = single ? 1 : card->dev->num_tx_queues; int rc; rtnl_lock(); rc = netif_set_real_num_tx_queues(card->dev, count); rtnl_unlock(); if (rc) return rc; if (card->qdio.no_out_queues == count) return 0; if (atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) qeth_free_qdio_queues(card); if (count == 1) dev_info(&card->gdev->dev, "Priority Queueing not supported\n"); card->qdio.default_out_queue = single ? 0 : QETH_DEFAULT_QUEUE; card->qdio.no_out_queues = count; return 0; } static int qeth_update_from_chp_desc(struct qeth_card *card) { struct ccw_device *ccwdev; struct channel_path_desc_fmt0 *chp_dsc; int rc = 0; QETH_DBF_TEXT(SETUP, 2, "chp_desc"); ccwdev = card->data.ccwdev; chp_dsc = ccw_device_get_chp_desc(ccwdev, 0); if (!chp_dsc) return -ENOMEM; card->info.func_level = 0x4100 + chp_dsc->desc; if (IS_OSD(card) || IS_OSX(card)) /* CHPP field bit 6 == 1 -> single queue */ rc = qeth_osa_set_output_queues(card, chp_dsc->chpp & 0x02); 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 rc; } static void qeth_init_qdio_info(struct qeth_card *card) { QETH_DBF_TEXT(SETUP, 4, "intqdinf"); atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; /* inbound */ card->qdio.no_in_queues = 1; card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; if (IS_IQD(card)) 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_initial_options(struct qeth_card *card) { card->options.route4.type = NO_ROUTER; card->options.route6.type = NO_ROUTER; card->options.rx_sg_cb = QETH_RX_SG_CB; card->options.isolation = ISOLATION_MODE_NONE; card->options.cq = QETH_CQ_DISABLED; card->options.layer = QETH_DISCIPLINE_UNDETERMINED; } 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 void qeth_setup_card(struct qeth_card *card) { QETH_DBF_TEXT(SETUP, 2, "setupcrd"); QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); card->info.type = CARD_RDEV(card)->id.driver_info; card->state = CARD_STATE_DOWN; spin_lock_init(&card->lock); spin_lock_init(&card->thread_mask_lock); mutex_init(&card->conf_mutex); mutex_init(&card->discipline_mutex); INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); INIT_LIST_HEAD(&card->cmd_waiter_list); init_waitqueue_head(&card->wait_q); qeth_set_initial_options(card); /* IP address takeover */ INIT_LIST_HEAD(&card->ipato.entries); 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); } 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(struct ccwgroup_device *gdev) { struct qeth_card *card; QETH_DBF_TEXT(SETUP, 2, "alloccrd"); card = kzalloc(sizeof(*card), GFP_KERNEL); if (!card) goto out; QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); card->gdev = gdev; dev_set_drvdata(&gdev->dev, card); CARD_RDEV(card) = gdev->cdev[0]; CARD_WDEV(card) = gdev->cdev[1]; CARD_DDEV(card) = gdev->cdev[2]; card->event_wq = alloc_ordered_workqueue("%s_event", 0, dev_name(&gdev->dev)); if (!card->event_wq) goto out_wq; if (qeth_setup_channel(&card->read, true)) goto out_ip; if (qeth_setup_channel(&card->write, true)) goto out_channel; if (qeth_setup_channel(&card->data, false)) goto out_data; card->qeth_service_level.seq_print = qeth_core_sl_print; register_service_level(&card->qeth_service_level); return card; out_data: qeth_clean_channel(&card->write); out_channel: qeth_clean_channel(&card->read); out_ip: destroy_workqueue(card->event_wq); out_wq: dev_set_drvdata(&gdev->dev, NULL); kfree(card); out: return NULL; } static int qeth_clear_channel(struct qeth_card *card, struct qeth_channel *channel) { int rc; QETH_CARD_TEXT(card, 3, "clearch"); spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 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_card *card, struct qeth_channel *channel) { int rc; QETH_CARD_TEXT(card, 3, "haltch"); spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 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, &card->read); rc2 = qeth_halt_channel(card, &card->write); rc3 = qeth_halt_channel(card, &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, &card->read); rc2 = qeth_clear_channel(card, &card->write); rc3 = qeth_clear_channel(card, &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 (IS_IQD(card)) 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; /* * 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; qeth_setup_ccw(channel->ccw, ciw->cmd, ciw->count, rcd_buf); channel->state = CH_STATE_RCD; spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); ret = ccw_device_start_timeout(channel->ccwdev, channel->ccw, QETH_RCD_PARM, LPM_ANYPATH, 0, QETH_RCD_TIMEOUT); spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 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.is_vm_nic = ((prcd[0x10] == _ascebc['V']) && (prcd[0x11] == _ascebc['M'])); } static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card) { enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; struct diag26c_vnic_resp *response = NULL; struct diag26c_vnic_req *request = NULL; struct ccw_dev_id id; char userid[80]; int rc = 0; QETH_DBF_TEXT(SETUP, 2, "vmlayer"); cpcmd("QUERY USERID", userid, sizeof(userid), &rc); if (rc) goto out; request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); if (!request || !response) { rc = -ENOMEM; goto out; } ccw_device_get_id(CARD_RDEV(card), &id); request->resp_buf_len = sizeof(*response); request->resp_version = DIAG26C_VERSION6_VM65918; request->req_format = DIAG26C_VNIC_INFO; ASCEBC(userid, 8); memcpy(&request->sys_name, userid, 8); request->devno = id.devno; QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); rc = diag26c(request, response, DIAG26C_PORT_VNIC); QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); if (rc) goto out; QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); if (request->resp_buf_len < sizeof(*response) || response->version != request->resp_version) { rc = -EIO; goto out; } if (response->protocol == VNIC_INFO_PROT_L2) disc = QETH_DISCIPLINE_LAYER2; else if (response->protocol == VNIC_INFO_PROT_L3) disc = QETH_DISCIPLINE_LAYER3; out: kfree(response); kfree(request); if (rc) QETH_DBF_TEXT_(SETUP, 2, "err%x", rc); return disc; } /* Determine whether the device requires a specific layer discipline */ static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card) { enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED; if (IS_OSM(card) || IS_OSN(card)) disc = QETH_DISCIPLINE_LAYER2; else if (IS_VM_NIC(card)) disc = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 : qeth_vm_detect_layer(card); switch (disc) { case QETH_DISCIPLINE_LAYER2: QETH_DBF_TEXT(SETUP, 3, "force l2"); break; case QETH_DISCIPLINE_LAYER3: QETH_DBF_TEXT(SETUP, 3, "force l3"); break; default: QETH_DBF_TEXT(SETUP, 3, "force no"); } return disc; } 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 void qeth_idx_finalize_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, unsigned int length) { qeth_setup_ccw(iob->channel->ccw, CCW_CMD_WRITE, length, iob->data); memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); if (iob->channel == &card->write) card->seqno.trans_hdr++; } 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_mpc_finalize_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, unsigned int length) { qeth_idx_finalize_cmd(card, iob, length); 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); iob->reply->seqno = QETH_IDX_COMMAND_SEQNO; iob->callback = qeth_release_buffer_cb; } /** * 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 * * Callback function gets called one or more times, with cb_cmd * pointing to the response returned by the hardware. Callback * function must return * > 0 if more reply blocks are expected, * 0 if the last or only reply block is received, and * < 0 on error. * Callback function can get the value of the reply_param pointer from the * field 'param' of the structure qeth_reply. */ static 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) { struct qeth_channel *channel = iob->channel; long timeout = iob->timeout; int rc; struct qeth_reply *reply = NULL; QETH_CARD_TEXT(card, 2, "sendctl"); reply = qeth_alloc_reply(card); if (!reply) { qeth_release_buffer(channel, iob); return -ENOMEM; } reply->callback = reply_cb; reply->param = reply_param; /* pairs with qeth_release_buffer(): */ qeth_get_reply(reply); iob->reply = reply; timeout = wait_event_interruptible_timeout(card->wait_q, qeth_trylock_channel(channel), timeout); if (timeout <= 0) { qeth_put_reply(reply); qeth_release_buffer(channel, iob); return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME; } iob->finalize(card, iob, len); QETH_DBF_HEX(CTRL, 2, iob->data, min(len, QETH_DBF_CTRL_LEN)); qeth_enqueue_reply(card, reply); QETH_CARD_TEXT(card, 6, "noirqpnd"); spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw, (addr_t) iob, 0, 0, timeout); spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); if (rc) { QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n", CARD_DEVID(card), rc); QETH_CARD_TEXT_(card, 2, " err%d", rc); qeth_dequeue_reply(card, reply); qeth_put_reply(reply); qeth_release_buffer(channel, iob); atomic_set(&channel->irq_pending, 0); wake_up(&card->wait_q); return rc; } timeout = wait_for_completion_interruptible_timeout(&reply->received, timeout); if (timeout <= 0) rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME; qeth_dequeue_reply(card, reply); if (!rc) rc = reply->rc; qeth_put_reply(reply); return rc; } static int qeth_idx_check_activate_response(struct qeth_card *card, struct qeth_channel *channel, struct qeth_cmd_buffer *iob) { int rc; rc = qeth_check_idx_response(card, iob->data); if (rc) return rc; if (QETH_IS_IDX_ACT_POS_REPLY(iob->data)) return 0; /* negative reply: */ QETH_DBF_TEXT_(SETUP, 2, "idxneg%c", QETH_IDX_ACT_CAUSE_CODE(iob->data)); switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) { case QETH_IDX_ACT_ERR_EXCL: dev_err(&channel->ccwdev->dev, "The adapter is used exclusively by another host\n"); return -EBUSY; case QETH_IDX_ACT_ERR_AUTH: case QETH_IDX_ACT_ERR_AUTH_USER: dev_err(&channel->ccwdev->dev, "Setting the device online failed because of insufficient authorization\n"); return -EPERM; default: QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: negative reply\n", CCW_DEVID(channel->ccwdev)); return -EIO; } } static void qeth_idx_query_read_cb(struct qeth_card *card, struct qeth_channel *channel, struct qeth_cmd_buffer *iob) { u16 peer_level; int rc; QETH_DBF_TEXT(SETUP, 2, "idxrdcb"); rc = qeth_idx_check_activate_response(card, channel, iob); if (rc) goto out; memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); if (peer_level != qeth_peer_func_level(card->info.func_level)) { QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n", CCW_DEVID(channel->ccwdev), card->info.func_level, peer_level); rc = -EINVAL; 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); out: qeth_notify_reply(iob->reply, rc); qeth_release_buffer(channel, iob); } static void qeth_idx_query_write_cb(struct qeth_card *card, struct qeth_channel *channel, struct qeth_cmd_buffer *iob) { u16 peer_level; int rc; QETH_DBF_TEXT(SETUP, 2, "idxwrcb"); rc = qeth_idx_check_activate_response(card, channel, iob); if (rc) goto out; memcpy(&peer_level, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); if ((peer_level & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { QETH_DBF_MESSAGE(2, "IDX_ACTIVATE on channel %x: function level mismatch (sent: %#x, received: %#x)\n", CCW_DEVID(channel->ccwdev), card->info.func_level, peer_level); rc = -EINVAL; } out: qeth_notify_reply(iob->reply, rc); qeth_release_buffer(channel, iob); } static void qeth_idx_finalize_query_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, unsigned int length) { qeth_setup_ccw(iob->channel->ccw, CCW_CMD_READ, length, iob->data); } static void qeth_idx_activate_cb(struct qeth_card *card, struct qeth_channel *channel, struct qeth_cmd_buffer *iob) { qeth_notify_reply(iob->reply, 0); qeth_release_buffer(channel, iob); } static void qeth_idx_setup_activate_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob) { u16 addr = (card->info.cula << 8) + card->info.unit_addr2; u8 port = ((u8)card->dev->dev_port) | 0x80; struct ccw_dev_id dev_id; ccw_device_get_id(CARD_DDEV(card), &dev_id); iob->finalize = qeth_idx_finalize_cmd; iob->callback = qeth_idx_activate_cb; memcpy(QETH_IDX_ACT_PNO(iob->data), &port, 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, 2); memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &dev_id.devno, 2); memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &addr, 2); } static int qeth_idx_activate_read_channel(struct qeth_card *card) { struct qeth_channel *channel = &card->read; struct qeth_cmd_buffer *iob; int rc; QETH_DBF_TEXT(SETUP, 2, "idxread"); iob = qeth_get_buffer(channel); if (!iob) return -ENOMEM; memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); qeth_idx_setup_activate_cmd(card, iob); rc = qeth_send_control_data(card, IDX_ACTIVATE_SIZE, iob, NULL, NULL); if (rc) return rc; iob = qeth_get_buffer(channel); if (!iob) return -ENOMEM; iob->finalize = qeth_idx_finalize_query_cmd; iob->callback = qeth_idx_query_read_cb; rc = qeth_send_control_data(card, QETH_BUFSIZE, iob, NULL, NULL); if (rc) return rc; channel->state = CH_STATE_UP; return 0; } static int qeth_idx_activate_write_channel(struct qeth_card *card) { struct qeth_channel *channel = &card->write; struct qeth_cmd_buffer *iob; int rc; QETH_DBF_TEXT(SETUP, 2, "idxwrite"); iob = qeth_get_buffer(channel); if (!iob) return -ENOMEM; memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); qeth_idx_setup_activate_cmd(card, iob); rc = qeth_send_control_data(card, IDX_ACTIVATE_SIZE, iob, NULL, NULL); if (rc) return rc; iob = qeth_get_buffer(channel); if (!iob) return -ENOMEM; iob->finalize = qeth_idx_finalize_query_cmd; iob->callback = qeth_idx_query_write_cb; rc = qeth_send_control_data(card, QETH_BUFSIZE, iob, NULL, NULL); if (rc) return rc; channel->state = CH_STATE_UP; return 0; } 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); 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); iob->finalize = qeth_mpc_finalize_cmd; 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); 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); iob->finalize = qeth_mpc_finalize_cmd; 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_update_max_mtu(struct qeth_card *card, unsigned int max_mtu) { struct net_device *dev = card->dev; unsigned int new_mtu; if (!max_mtu) { /* IQD needs accurate max MTU to set up its RX buffers: */ if (IS_IQD(card)) return -EINVAL; /* tolerate quirky HW: */ max_mtu = ETH_MAX_MTU; } rtnl_lock(); if (IS_IQD(card)) { /* move any device with default MTU to new max MTU: */ new_mtu = (dev->mtu == dev->max_mtu) ? max_mtu : dev->mtu; /* adjust RX buffer size to new max MTU: */ card->qdio.in_buf_size = max_mtu + 2 * PAGE_SIZE; if (dev->max_mtu && dev->max_mtu != max_mtu) qeth_free_qdio_queues(card); } else { if (dev->mtu) new_mtu = dev->mtu; /* default MTUs for first setup: */ else if (IS_LAYER2(card)) new_mtu = ETH_DATA_LEN; else new_mtu = ETH_DATA_LEN - 8; /* allow for LLC + SNAP */ } dev->max_mtu = max_mtu; dev->mtu = min(new_mtu, max_mtu); rtnl_unlock(); return 0; } 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_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 (IS_IQD(card)) { memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); mtu = qeth_get_mtu_outof_framesize(framesize); } else { mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data); } *(u16 *)reply->param = mtu; 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); return 0; } static u8 qeth_mpc_select_prot_type(struct qeth_card *card) { if (IS_OSN(card)) return QETH_PROT_OSN2; return IS_LAYER2(card) ? QETH_PROT_LAYER2 : QETH_PROT_TCPIP; } static int qeth_ulp_enable(struct qeth_card *card) { u8 prot_type = qeth_mpc_select_prot_type(card); struct qeth_cmd_buffer *iob; u16 max_mtu; int rc; /*FIXME: trace view callbacks*/ QETH_DBF_TEXT(SETUP, 2, "ulpenabl"); iob = qeth_wait_for_buffer(&card->write); iob->finalize = qeth_mpc_finalize_cmd; memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE); *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = (u8) card->dev->dev_port; 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, &max_mtu); if (rc) return rc; return qeth_update_max_mtu(card, max_mtu); } 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"); return -EMLINK; } 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); iob->finalize = qeth_mpc_finalize_cmd; 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) { struct qeth_qdio_out_buffer *newbuf; newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC); if (!newbuf) return -ENOMEM; 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->next_pending = q->bufs[bidx]; atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY); q->bufs[bidx] = newbuf; return 0; } static void qeth_free_output_queue(struct qeth_qdio_out_q *q) { if (!q) return; qeth_drain_output_queue(q, true); qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); kfree(q); } static struct qeth_qdio_out_q *qeth_alloc_output_queue(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_queues(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 */ for (i = 0; i < card->qdio.no_out_queues; ++i) { card->qdio.out_qs[i] = qeth_alloc_output_queue(); 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]->card = card; 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_output_queue(card->qdio.out_qs[--i]); card->qdio.out_qs[i] = NULL; } 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_queues(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 */ for (i = 0; i < card->qdio.no_out_queues; i++) { qeth_free_output_queue(card->qdio.out_qs[i]); card->qdio.out_qs[i] = 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); iob->finalize = qeth_mpc_finalize_cmd; 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_queues(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_queues(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, !IS_IQD(card)); 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 (IS_VM_NIC(card) || (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); QETH_CARD_STAT_INC(card, rx_sg_alloc_page); } } } 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 = netdev_alloc_skb(card->dev, 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) { unsigned int i; int rc; QETH_DBF_TEXT(SETUP, 2, "initqdqs"); /* inbound queue */ qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); memset(&card->rx, 0, sizeof(struct qeth_rx)); 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) { struct qeth_qdio_out_q *queue = card->qdio.out_qs[i]; qdio_reset_buffers(queue->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q); queue->max_elements = QETH_MAX_BUFFER_ELEMENTS(card); queue->next_buf_to_fill = 0; queue->do_pack = 0; atomic_set(&queue->used_buffers, 0); atomic_set(&queue->set_pci_flags_count, 0); atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); } return 0; } EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); static __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, enum qeth_ipa_cmds command, enum qeth_prot_versions prot) { cmd->hdr.command = command; cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST; /* cmd->hdr.seqno is set by qeth_send_control_data() */ cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type); cmd->hdr.rel_adapter_no = (u8) card->dev->dev_port; cmd->hdr.prim_version_no = IS_LAYER2(card) ? 2 : 1; cmd->hdr.param_count = 1; cmd->hdr.prot_version = prot; } static void qeth_ipa_finalize_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, unsigned int length) { qeth_mpc_finalize_cmd(card, iob, length); /* override with IPA-specific values: */ __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa; iob->reply->seqno = card->seqno.ipa++; } void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, u16 cmd_length) { u16 total_length = IPA_PDU_HEADER_SIZE + cmd_length; u8 prot_type = qeth_mpc_select_prot_type(card); iob->finalize = qeth_ipa_finalize_cmd; iob->timeout = QETH_IPA_TIMEOUT; memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &total_length, 2); memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &cmd_length, 2); memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &cmd_length, 2); memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &cmd_length, 2); } EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); 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; iob = qeth_get_buffer(&card->write); if (iob) { qeth_prepare_ipa_cmd(card, iob, sizeof(struct qeth_ipa_cmd)); qeth_fill_ipacmd_header(card, __ipa_cmd(iob), ipacmd, prot); } else { dev_warn(&card->gdev->dev, "The qeth driver ran out of channel command buffers\n"); QETH_DBF_MESSAGE(1, "device %x ran out of channel command buffers", CARD_DEVID(card)); } return iob; } EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); static int qeth_send_ipa_cmd_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; return (cmd->hdr.return_code) ? -EIO : 0; } /** * qeth_send_ipa_cmd() - send an IPA command * * See qeth_send_control_data() for explanation of the arguments. */ 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) { u16 length; int rc; QETH_CARD_TEXT(card, 4, "sendipa"); if (card->read_or_write_problem) { qeth_release_buffer(iob->channel, iob); return -EIO; } if (reply_cb == NULL) reply_cb = qeth_send_ipa_cmd_cb; memcpy(&length, QETH_IPA_PDU_LEN_TOTAL(iob->data), 2); rc = qeth_send_control_data(card, 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); static int qeth_send_startlan_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; if (cmd->hdr.return_code == IPA_RC_LAN_OFFLINE) return -ENETDOWN; return (cmd->hdr.return_code) ? -EIO : 0; } static int qeth_send_startlan(struct qeth_card *card) { struct qeth_cmd_buffer *iob; QETH_DBF_TEXT(SETUP, 2, "strtlan"); iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0); if (!iob) return -ENOMEM; return qeth_send_ipa_cmd(card, iob, qeth_send_startlan_cb, NULL); } static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd) { if (!cmd->hdr.return_code) cmd->hdr.return_code = cmd->data.setadapterparms.hdr.return_code; return cmd->hdr.return_code; } static int qeth_query_setadapterparms_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; QETH_CARD_TEXT(card, 3, "quyadpcb"); if (qeth_setadpparms_inspect_rc(cmd)) return -EIO; 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 0; } static 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); if (iob) { cmd = __ipa_cmd(iob); 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; } static 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)); if (!iob) return -ENOMEM; rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); return rc; } 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; switch (cmd->hdr.return_code) { case IPA_RC_SUCCESS: break; case IPA_RC_NOTSUPP: case IPA_RC_L2_UNSUPPORTED_CMD: QETH_DBF_TEXT(SETUP, 2, "ipaunsup"); card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS; card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS; return -EOPNOTSUPP; default: QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Unhandled rc=%#x\n", CARD_DEVID(card), cmd->hdr.return_code); return -EIO; } 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 if (cmd->hdr.prot_version == QETH_PROT_IPV6) { card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; } else QETH_DBF_MESSAGE(1, "IPA_CMD_QIPASSIST on device %x: Flawed LIC detected\n", CARD_DEVID(card)); return 0; } static 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); if (!iob) return -ENOMEM; rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL); return rc; } static int qeth_query_switch_attributes_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; struct qeth_query_switch_attributes *attrs; struct qeth_switch_info *sw_info; QETH_CARD_TEXT(card, 2, "qswiatcb"); if (qeth_setadpparms_inspect_rc(cmd)) return -EIO; sw_info = (struct qeth_switch_info *)reply->param; attrs = &cmd->data.setadapterparms.data.query_switch_attributes; sw_info->capabilities = attrs->capabilities; sw_info->settings = attrs->settings; QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities, sw_info->settings); return 0; } int qeth_query_switch_attributes(struct qeth_card *card, struct qeth_switch_info *sw_info) { struct qeth_cmd_buffer *iob; QETH_CARD_TEXT(card, 2, "qswiattr"); if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES)) return -EOPNOTSUPP; if (!netif_carrier_ok(card->dev)) return -ENOMEDIUM; iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, sizeof(struct qeth_ipacmd_setadpparms_hdr)); if (!iob) return -ENOMEM; return qeth_send_ipa_cmd(card, iob, qeth_query_switch_attributes_cb, sw_info); } static int qeth_query_setdiagass_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; u16 rc = cmd->hdr.return_code; if (rc) { QETH_CARD_TEXT_(card, 2, "diagq:%x", rc); return -EIO; } 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); if (!iob) return -ENOMEM; cmd = __ipa_cmd(iob); 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; tid->chpid = card->info.chpid; ccw_device_get_id(CARD_RDEV(card), &ccwid); tid->ssid = ccwid.ssid; tid->devno = ccwid.devno; if (!info) return; level = stsi(NULL, 0, 0, 0); if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0)) tid->lparnr = info222->lpar_number; if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) { 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 = (struct qeth_ipa_cmd *) data; u16 rc = cmd->hdr.return_code; if (rc) { QETH_CARD_TEXT_(card, 2, "trapc:%x", rc); return -EIO; } 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); if (!iob) return -ENOMEM; cmd = __ipa_cmd(iob); 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); static 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) { QETH_CARD_STAT_INC(card, rx_dropped); return 0; } else return 1; } return 0; } static 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 */ rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, queue->next_buf_to_init, count); if (rc) { QETH_CARD_TEXT(card, 2, "qinberr"); } queue->next_buf_to_init = (queue->next_buf_to_init + count) % QDIO_MAX_BUFFERS_PER_Q; } } static 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); } static void 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 (IS_IQD(card)) { if (sbalf15 == 0) { qdio_err = 0; } else { qdio_err = 1; } } qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr"); if (!qdio_err) return; if ((sbalf15 >= 15) && (sbalf15 <= 31)) return; QETH_CARD_TEXT(card, 1, "lnkfail"); QETH_CARD_TEXT_(card, 1, "%04x %02x", (u16)qdio_err, (u8)sbalf15); } /** * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer. * @queue: queue to check for packing buffer * * Returns number of buffers that were prepared for flush. */ static int qeth_prep_flush_pack_buffer(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; } /* * 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"); QETH_TXQ_STAT_INC(queue, packing_mode_switch); 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) { 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"); QETH_TXQ_STAT_INC(queue, packing_mode_switch); queue->do_pack = 0; return qeth_prep_flush_pack_buffer(queue); } } 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 (IS_IQD(queue->card)) 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; } } } QETH_TXQ_STAT_ADD(queue, bufs, count); 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 (rc) { QETH_TXQ_STAT_ADD(queue, tx_errors, count); /* ignore temporary SIGA errors without busy condition */ if (rc == -ENOBUFS) 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; } } 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. */ 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_prep_flush_pack_buffer(queue); if (q_was_packing) QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_cnt); if (flush_cnt) qeth_flush_buffers(queue, index, flush_cnt); atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); } } } static 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->flags & IFF_UP) napi_schedule(&card->napi); } 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) { rc = -1; goto out; } qeth_free_qdio_queues(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)) return; 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_tx_stop_all_queues(card->dev); qeth_schedule_recovery(card); return; } 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 = 0; while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) && 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); ++e; } qeth_scrub_qdio_buffer(buffer, QDIO_MAX_ELEMENTS_PER_BUFFER); } 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; } static void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err, 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); } static 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; struct net_device *dev = card->dev; struct netdev_queue *txq; int i; QETH_CARD_TEXT(card, 6, "qdouhdl"); if (qdio_error & QDIO_ERROR_FATAL) { QETH_CARD_TEXT(card, 2, "achkcond"); netif_tx_stop_all_queues(dev); qeth_schedule_recovery(card); return; } 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) { WARN_ON_ONCE(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); } QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx); /* prepare the queue slot for re-use: */ qeth_scrub_qdio_buffer(buffer->buffer, queue->max_elements); 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_cleanup_handled_pending(queue, bidx, 0); } atomic_sub(count, &queue->used_buffers); /* check if we need to do something on this outbound queue */ if (!IS_IQD(card)) qeth_check_outbound_queue(queue); if (IS_IQD(card)) __queue = qeth_iqd_translate_txq(dev, __queue); txq = netdev_get_tx_queue(dev, __queue); /* xmit may have observed the full-condition, but not yet stopped the * txq. In which case the code below won't trigger. So before returning, * xmit will re-check the txq's fill level and wake it up if needed. */ if (netif_tx_queue_stopped(txq) && !qeth_out_queue_is_full(queue)) netif_tx_wake_queue(txq); } /** * Note: Function assumes that we have 4 outbound queues. */ int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb) { struct vlan_ethhdr *veth = vlan_eth_hdr(skb); u8 tos; switch (card->qdio.do_prio_queueing) { case QETH_PRIO_Q_ING_TOS: case QETH_PRIO_Q_ING_PREC: switch (qeth_get_ip_version(skb)) { case 4: tos = ipv4_get_dsfield(ip_hdr(skb)); break; case 6: tos = ipv6_get_dsfield(ipv6_hdr(skb)); break; default: return card->qdio.default_out_queue; } if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC) return ~tos >> 6 & 3; if (tos & IPTOS_MINCOST) return 3; if (tos & IPTOS_RELIABILITY) return 2; if (tos & IPTOS_THROUGHPUT) return 1; if (tos & IPTOS_LOWDELAY) return 0; break; case QETH_PRIO_Q_ING_SKB: if (skb->priority > 5) return 0; return ~skb->priority >> 1 & 3; case QETH_PRIO_Q_ING_VLAN: if (veth->h_vlan_proto == htons(ETH_P_8021Q)) return ~ntohs(veth->h_vlan_TCI) >> (VLAN_PRIO_SHIFT + 1) & 3; break; default: break; } return card->qdio.default_out_queue; } EXPORT_SYMBOL_GPL(qeth_get_priority_queue); /** * qeth_get_elements_for_frags() - find number of SBALEs for skb frags. * @skb: SKB address * * Returns the number of pages, and thus QDIO buffer elements, needed to cover * fragmented part of the SKB. Returns zero for linear SKB. */ static int qeth_get_elements_for_frags(struct sk_buff *skb) { int cnt, elements = 0; for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt]; elements += qeth_get_elements_for_range( (addr_t)skb_frag_address(frag), (addr_t)skb_frag_address(frag) + skb_frag_size(frag)); } return elements; } /** * qeth_count_elements() - Counts the number of QDIO buffer elements needed * to transmit an skb. * @skb: the skb to operate on. * @data_offset: skip this part of the skb's linear data * * Returns the number of pages, and thus QDIO buffer elements, needed to map the * skb's data (both its linear part and paged fragments). */ unsigned int qeth_count_elements(struct sk_buff *skb, unsigned int data_offset) { unsigned int elements = qeth_get_elements_for_frags(skb); addr_t end = (addr_t)skb->data + skb_headlen(skb); addr_t start = (addr_t)skb->data + data_offset; if (start != end) elements += qeth_get_elements_for_range(start, end); return elements; } EXPORT_SYMBOL_GPL(qeth_count_elements); #define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr_tso) + \ MAX_TCP_HEADER) /** * qeth_add_hw_header() - add a HW header to an skb. * @skb: skb that the HW header should be added to. * @hdr: double pointer to a qeth_hdr. When returning with >= 0, * it contains a valid pointer to a qeth_hdr. * @hdr_len: length of the HW header. * @proto_len: length of protocol headers that need to be in same page as the * HW header. * * Returns the pushed length. If the header can't be pushed on * (eg. because it would cross a page boundary), it is allocated from * the cache instead and 0 is returned. * The number of needed buffer elements is returned in @elements. * Error to create the hdr is indicated by returning with < 0. */ static int qeth_add_hw_header(struct qeth_qdio_out_q *queue, struct sk_buff *skb, struct qeth_hdr **hdr, unsigned int hdr_len, unsigned int proto_len, unsigned int *elements) { const unsigned int contiguous = proto_len ? proto_len : 1; const unsigned int max_elements = queue->max_elements; unsigned int __elements; addr_t start, end; bool push_ok; int rc; check_layout: start = (addr_t)skb->data - hdr_len; end = (addr_t)skb->data; if (qeth_get_elements_for_range(start, end + contiguous) == 1) { /* Push HW header into same page as first protocol header. */ push_ok = true; /* ... but TSO always needs a separate element for headers: */ if (skb_is_gso(skb)) __elements = 1 + qeth_count_elements(skb, proto_len); else __elements = qeth_count_elements(skb, 0); } else if (!proto_len && qeth_get_elements_for_range(start, end) == 1) { /* Push HW header into a new page. */ push_ok = true; __elements = 1 + qeth_count_elements(skb, 0); } else { /* Use header cache, copy protocol headers up. */ push_ok = false; __elements = 1 + qeth_count_elements(skb, proto_len); } /* Compress skb to fit into one IO buffer: */ if (__elements > max_elements) { if (!skb_is_nonlinear(skb)) { /* Drop it, no easy way of shrinking it further. */ QETH_DBF_MESSAGE(2, "Dropped an oversized skb (Max Elements=%u / Actual=%u / Length=%u).\n", max_elements, __elements, skb->len); return -E2BIG; } rc = skb_linearize(skb); if (rc) { QETH_TXQ_STAT_INC(queue, skbs_linearized_fail); return rc; } QETH_TXQ_STAT_INC(queue, skbs_linearized); /* Linearization changed the layout, re-evaluate: */ goto check_layout; } *elements = __elements; /* Add the header: */ if (push_ok) { *hdr = skb_push(skb, hdr_len); return hdr_len; } /* fall back */ if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE) return -E2BIG; *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); if (!*hdr) return -ENOMEM; /* Copy protocol headers behind HW header: */ skb_copy_from_linear_data(skb, ((char *)*hdr) + hdr_len, proto_len); return 0; } static void __qeth_fill_buffer(struct sk_buff *skb, struct qeth_qdio_out_buffer *buf, bool is_first_elem, unsigned int offset) { struct qdio_buffer *buffer = buf->buffer; int element = buf->next_element_to_fill; int length = skb_headlen(skb) - offset; char *data = skb->data + offset; int length_here, cnt; /* map linear part into buffer element(s) */ 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 (is_first_elem) { is_first_elem = false; if (length || skb_is_nonlinear(skb)) /* skb needs additional elements */ buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; else buffer->element[element].eflags = 0; } else { buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG; } data += length_here; element++; } /* map page frags into buffer element(s) */ for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt]; data = skb_frag_address(frag); length = skb_frag_size(frag); while (length > 0) { length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE); if (length < length_here) length_here = length; buffer->element[element].addr = data; buffer->element[element].length = length_here; buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG; length -= length_here; data += length_here; element++; } } if (buffer->element[element - 1].eflags) buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG; buf->next_element_to_fill = element; } /** * qeth_fill_buffer() - map skb into an output buffer * @queue: QDIO queue to submit the buffer on * @buf: buffer to transport the skb * @skb: skb to map into the buffer * @hdr: qeth_hdr for this skb. Either at skb->data, or allocated * from qeth_core_header_cache. * @offset: when mapping the skb, start at skb->data + offset * @hd_len: if > 0, build a dedicated header element of this size * flush: Prepare the buffer to be flushed, regardless of its fill level. */ static int qeth_fill_buffer(struct qeth_qdio_out_q *queue, struct qeth_qdio_out_buffer *buf, struct sk_buff *skb, struct qeth_hdr *hdr, unsigned int offset, unsigned int hd_len, bool flush) { struct qdio_buffer *buffer = buf->buffer; bool is_first_elem = true; __skb_queue_tail(&buf->skb_list, skb); /* build dedicated header element */ if (hd_len) { int element = buf->next_element_to_fill; is_first_elem = false; buffer->element[element].addr = hdr; buffer->element[element].length = hd_len; buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG; /* remember to free cache-allocated qeth_hdr: */ buf->is_header[element] = ((void *)hdr != skb->data); buf->next_element_to_fill++; } __qeth_fill_buffer(skb, buf, is_first_elem, offset); if (!queue->do_pack) { QETH_CARD_TEXT(queue->card, 6, "fillbfnp"); } else { QETH_CARD_TEXT(queue->card, 6, "fillbfpa"); QETH_TXQ_STAT_INC(queue, skbs_pack); /* If the buffer still has free elements, keep using it. */ if (!flush && buf->next_element_to_fill < queue->max_elements) return 0; } /* flush out the buffer */ atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q; return 1; } static int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb, struct qeth_hdr *hdr, unsigned int offset, unsigned int hd_len) { int index = queue->next_buf_to_fill; struct qeth_qdio_out_buffer *buffer = queue->bufs[index]; struct netdev_queue *txq; bool stopped = false; /* Just a sanity check, the wake/stop logic should ensure that we always * get a free buffer. */ if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) return -EBUSY; txq = netdev_get_tx_queue(queue->card->dev, skb_get_queue_mapping(skb)); if (atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) { /* If a TX completion happens right _here_ and misses to wake * the txq, then our re-check below will catch the race. */ QETH_TXQ_STAT_INC(queue, stopped); netif_tx_stop_queue(txq); stopped = true; } qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len, stopped); qeth_flush_buffers(queue, index, 1); if (stopped && !qeth_out_queue_is_full(queue)) netif_tx_start_queue(txq); return 0; } int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, struct sk_buff *skb, struct qeth_hdr *hdr, unsigned int offset, unsigned int hd_len, int elements_needed) { struct qeth_qdio_out_buffer *buffer; struct netdev_queue *txq; bool stopped = false; 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]; /* Just a sanity check, the wake/stop logic should ensure that we always * get a free buffer. */ if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); return -EBUSY; } txq = netdev_get_tx_queue(card->dev, skb_get_queue_mapping(skb)); /* 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 (buffer->next_element_to_fill + elements_needed > queue->max_elements) { /* ... 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 stepped forward, so sanity-check 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); rc = -EBUSY; goto out; } } } if (buffer->next_element_to_fill == 0 && atomic_inc_return(&queue->used_buffers) >= QDIO_MAX_BUFFERS_PER_Q) { /* If a TX completion happens right _here_ and misses to wake * the txq, then our re-check below will catch the race. */ QETH_TXQ_STAT_INC(queue, stopped); netif_tx_stop_queue(txq); stopped = true; } flush_count += qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len, stopped); 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)) { start_index = queue->next_buf_to_fill; /* check if we can go back to non-packing state */ tmp = 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 (!tmp && !atomic_read(&queue->set_pci_flags_count)) tmp = qeth_prep_flush_pack_buffer(queue); if (tmp) { qeth_flush_buffers(queue, start_index, tmp); flush_count += tmp; } } out: /* at this point the queue is UNLOCKED again */ if (do_pack) QETH_TXQ_STAT_ADD(queue, bufs_pack, flush_count); if (stopped && !qeth_out_queue_is_full(queue)) netif_tx_start_queue(txq); return rc; } EXPORT_SYMBOL_GPL(qeth_do_send_packet); static void qeth_fill_tso_ext(struct qeth_hdr_tso *hdr, unsigned int payload_len, struct sk_buff *skb, unsigned int proto_len) { struct qeth_hdr_ext_tso *ext = &hdr->ext; ext->hdr_tot_len = sizeof(*ext); ext->imb_hdr_no = 1; ext->hdr_type = 1; ext->hdr_version = 1; ext->hdr_len = 28; ext->payload_len = payload_len; ext->mss = skb_shinfo(skb)->gso_size; ext->dg_hdr_len = proto_len; } int qeth_xmit(struct qeth_card *card, struct sk_buff *skb, struct qeth_qdio_out_q *queue, int ipv, int cast_type, void (*fill_header)(struct qeth_qdio_out_q *queue, struct qeth_hdr *hdr, struct sk_buff *skb, int ipv, int cast_type, unsigned int data_len)) { unsigned int proto_len, hw_hdr_len; unsigned int frame_len = skb->len; bool is_tso = skb_is_gso(skb); unsigned int data_offset = 0; struct qeth_hdr *hdr = NULL; unsigned int hd_len = 0; unsigned int elements; int push_len, rc; bool is_sg; if (is_tso) { hw_hdr_len = sizeof(struct qeth_hdr_tso); proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb); } else { hw_hdr_len = sizeof(struct qeth_hdr); proto_len = (IS_IQD(card) && IS_LAYER2(card)) ? ETH_HLEN : 0; } rc = skb_cow_head(skb, hw_hdr_len); if (rc) return rc; push_len = qeth_add_hw_header(queue, skb, &hdr, hw_hdr_len, proto_len, &elements); if (push_len < 0) return push_len; if (is_tso || !push_len) { /* HW header needs its own buffer element. */ hd_len = hw_hdr_len + proto_len; data_offset = push_len + proto_len; } memset(hdr, 0, hw_hdr_len); fill_header(queue, hdr, skb, ipv, cast_type, frame_len); if (is_tso) qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr, frame_len - proto_len, skb, proto_len); is_sg = skb_is_nonlinear(skb); if (IS_IQD(card)) { rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset, hd_len); } else { /* TODO: drop skb_orphan() once TX completion is fast enough */ skb_orphan(skb); rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset, hd_len, elements); } if (!rc) { QETH_TXQ_STAT_ADD(queue, buf_elements, elements); if (is_sg) QETH_TXQ_STAT_INC(queue, skbs_sg); if (is_tso) { QETH_TXQ_STAT_INC(queue, skbs_tso); QETH_TXQ_STAT_ADD(queue, tso_bytes, frame_len); } } else { if (!push_len) kmem_cache_free(qeth_core_header_cache, hdr); } return rc; } EXPORT_SYMBOL_GPL(qeth_xmit); 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_ipa_cmd *) data; struct qeth_ipacmd_setadpparms *setparms; QETH_CARD_TEXT(card, 4, "prmadpcb"); setparms = &(cmd->data.setadapterparms); if (qeth_setadpparms_inspect_rc(cmd)) { QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code); setparms->data.mode = SET_PROMISC_MODE_OFF; } card->info.promisc_mode = setparms->data.mode; return (cmd->hdr.return_code) ? -EIO : 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_hdr) + 8); if (!iob) return; cmd = __ipa_cmd(iob); 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); static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; struct qeth_ipacmd_setadpparms *adp_cmd; QETH_CARD_TEXT(card, 4, "chgmaccb"); if (qeth_setadpparms_inspect_rc(cmd)) return -EIO; adp_cmd = &cmd->data.setadapterparms; if (!is_valid_ether_addr(adp_cmd->data.change_addr.addr)) return -EADDRNOTAVAIL; if (IS_LAYER2(card) && IS_OSD(card) && !IS_VM_NIC(card) && !(adp_cmd->hdr.flags & QETH_SETADP_FLAGS_VIRTUAL_MAC)) return -EADDRNOTAVAIL; ether_addr_copy(card->dev->dev_addr, adp_cmd->data.change_addr.addr); 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_hdr) + sizeof(struct qeth_change_addr)); if (!iob) return -ENOMEM; cmd = __ipa_cmd(iob); cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN; ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr, card->dev->dev_addr); 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_ipa_cmd *) data; struct qeth_set_access_ctrl *access_ctrl_req; int fallback = *(int *)reply->param; QETH_CARD_TEXT(card, 4, "setaccb"); if (cmd->hdr.return_code) return -EIO; qeth_setadpparms_inspect_rc(cmd); 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); if (cmd->data.setadapterparms.hdr.return_code != SET_ACCESS_CTRL_RC_SUCCESS) QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%#x) on device %x: %#x\n", access_ctrl_req->subcmd_code, CARD_DEVID(card), cmd->data.setadapterparms.hdr.return_code); switch (cmd->data.setadapterparms.hdr.return_code) { case SET_ACCESS_CTRL_RC_SUCCESS: 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"); } break; case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED: QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already deactivated\n", CARD_DEVID(card)); if (fallback) card->options.isolation = card->options.prev_isolation; break; case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED: QETH_DBF_MESSAGE(2, "QDIO data connection isolation on device %x already activated\n", CARD_DEVID(card)); if (fallback) card->options.isolation = card->options.prev_isolation; break; case SET_ACCESS_CTRL_RC_NOT_SUPPORTED: dev_err(&card->gdev->dev, "Adapter does not " "support QDIO data connection isolation\n"); break; case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER: dev_err(&card->gdev->dev, "Adapter is dedicated. " "QDIO data connection isolation not supported\n"); if (fallback) card->options.isolation = card->options.prev_isolation; break; case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF: dev_err(&card->gdev->dev, "TSO does not permit QDIO data connection isolation\n"); if (fallback) card->options.isolation = card->options.prev_isolation; break; case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED: dev_err(&card->gdev->dev, "The adjacent switch port does not " "support reflective relay mode\n"); if (fallback) card->options.isolation = card->options.prev_isolation; break; case SET_ACCESS_CTRL_RC_REFLREL_FAILED: dev_err(&card->gdev->dev, "The reflective relay mode cannot be " "enabled at the adjacent switch port"); if (fallback) card->options.isolation = card->options.prev_isolation; break; case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED: dev_warn(&card->gdev->dev, "Turning off reflective relay mode " "at the adjacent switch failed\n"); break; default: /* this should never happen */ if (fallback) card->options.isolation = card->options.prev_isolation; break; } return (cmd->hdr.return_code) ? -EIO : 0; } static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card, enum qeth_ipa_isolation_modes isolation, int fallback) { 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)); if (!iob) return -ENOMEM; cmd = __ipa_cmd(iob); 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, &fallback); QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc); return rc; } int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback) { int rc = 0; QETH_CARD_TEXT(card, 4, "setactlo"); if ((IS_OSD(card) || IS_OSX(card)) && qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) { rc = qeth_setadpparms_set_access_ctrl(card, card->options.isolation, fallback); if (rc) { QETH_DBF_MESSAGE(3, "IPA(SET_ACCESS_CTRL(%d) on device %x: sent failed\n", rc, CARD_DEVID(card)); rc = -EOPNOTSUPP; } } 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"); qeth_schedule_recovery(card); } EXPORT_SYMBOL_GPL(qeth_tx_timeout); static 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) && (card->info.link_type != QETH_LINK_TYPE_25GBIT_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; } 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; unsigned char *data; void *snmp_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; if (cmd->hdr.return_code) { QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code); return -EIO; } if (cmd->data.setadapterparms.hdr.return_code) { cmd->hdr.return_code = cmd->data.setadapterparms.hdr.return_code; QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code); return -EIO; } data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); if (cmd->data.setadapterparms.hdr.seq_no == 1) { snmp_data = &cmd->data.setadapterparms.data.snmp; data_len -= offsetof(struct qeth_ipa_cmd, data.setadapterparms.data.snmp); } else { snmp_data = &cmd->data.setadapterparms.data.snmp.request; data_len -= offsetof(struct qeth_ipa_cmd, data.setadapterparms.data.snmp.request); } /* check if there is enough room in userspace */ if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOSPC); return -ENOSPC; } 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*/ memcpy(qinfo->udata + qinfo->udata_offset, snmp_data, 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; } static 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; unsigned int req_len; struct qeth_arp_query_info qinfo = {0, }; int rc = 0; QETH_CARD_TEXT(card, 3, "snmpcmd"); if (IS_VM_NIC(card)) return -EOPNOTSUPP; if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && IS_LAYER3(card)) return -EOPNOTSUPP; /* skip 4 bytes (data_len struct member) to get req_len */ if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int))) return -EFAULT; if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE - sizeof(struct qeth_ipacmd_hdr) - sizeof(struct qeth_ipacmd_setadpparms_hdr))) return -EINVAL; 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); if (!iob) { rc = -ENOMEM; goto out; } /* for large requests, fix-up the length fields: */ qeth_prepare_ipa_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len); cmd = __ipa_cmd(iob); memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo); if (rc) QETH_DBF_MESSAGE(2, "SNMP command failed on device %x: (%#x)\n", CARD_DEVID(card), rc); else { if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) rc = -EFAULT; } out: kfree(ureq); kfree(qinfo.udata); return rc; } 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_ipa_cmd *)data; struct qeth_qoat_priv *priv; char *resdata; int resdatalen; QETH_CARD_TEXT(card, 3, "qoatcb"); if (qeth_setadpparms_inspect_rc(cmd)) return -EIO; 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)) return -ENOSPC; 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; } static 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 = vzalloc(oat_data.buffer_len); 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)); if (!iob) { rc = -ENOMEM; goto out_free; } cmd = __ipa_cmd(iob); 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; } out_free: vfree(priv.buffer); out: return rc; } static int qeth_query_card_info_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct carrier_info *carrier_info = (struct carrier_info *)reply->param; struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; struct qeth_query_card_info *card_info; QETH_CARD_TEXT(card, 2, "qcrdincb"); if (qeth_setadpparms_inspect_rc(cmd)) return -EIO; card_info = &cmd->data.setadapterparms.data.card_info; carrier_info->card_type = card_info->card_type; carrier_info->port_mode = card_info->port_mode; carrier_info->port_speed = card_info->port_speed; return 0; } int qeth_query_card_info(struct qeth_card *card, struct carrier_info *carrier_info) { struct qeth_cmd_buffer *iob; QETH_CARD_TEXT(card, 2, "qcrdinfo"); if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO)) return -EOPNOTSUPP; iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, sizeof(struct qeth_ipacmd_setadpparms_hdr)); if (!iob) return -ENOMEM; return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb, (void *)carrier_info); } /** * qeth_vm_request_mac() - Request a hypervisor-managed MAC address * @card: pointer to a qeth_card * * Returns * 0, if a MAC address has been set for the card's netdevice * a return code, for various error conditions */ int qeth_vm_request_mac(struct qeth_card *card) { struct diag26c_mac_resp *response; struct diag26c_mac_req *request; struct ccw_dev_id id; int rc; QETH_DBF_TEXT(SETUP, 2, "vmreqmac"); request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA); response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA); if (!request || !response) { rc = -ENOMEM; goto out; } ccw_device_get_id(CARD_DDEV(card), &id); request->resp_buf_len = sizeof(*response); request->resp_version = DIAG26C_VERSION2; request->op_code = DIAG26C_GET_MAC; request->devno = id.devno; QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); rc = diag26c(request, response, DIAG26C_MAC_SERVICES); QETH_DBF_HEX(CTRL, 2, request, sizeof(*request)); if (rc) goto out; QETH_DBF_HEX(CTRL, 2, response, sizeof(*response)); if (request->resp_buf_len < sizeof(*response) || response->version != request->resp_version) { rc = -EIO; QETH_DBF_TEXT(SETUP, 2, "badresp"); QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len, sizeof(request->resp_buf_len)); } else if (!is_valid_ether_addr(response->mac)) { rc = -EINVAL; QETH_DBF_TEXT(SETUP, 2, "badmac"); QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN); } else { ether_addr_copy(card->dev->dev_addr, response->mac); } out: kfree(response); kfree(request); return rc; } EXPORT_SYMBOL_GPL(qeth_vm_request_mac); 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, "qeth_read_conf_data on device %x returned %i\n", CARD_DEVID(card), 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, "ac1:%02x", card->ssqd.qdioac1); QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2); QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", 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 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); 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, 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 = kcalloc(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 = kcalloc(card->qdio.no_in_queues, sizeof(void *), 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] = qeth_qdio_start_poll; qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); out_sbal_ptrs = kcalloc(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 = IS_IQD(card) ? QDIO_IQDIO_QFMT : QDIO_QETH_QFMT; 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 = qeth_qdio_input_handler; init_data.output_handler = qeth_qdio_output_handler; init_data.queue_start_poll_array = queue_start_poll; init_data.int_parm = (unsigned long) card; init_data.input_sbal_addr_array = in_sbal_ptrs; init_data.output_sbal_addr_array = out_sbal_ptrs; init_data.output_sbal_state_array = card->qdio.out_bufstates; init_data.scan_threshold = IS_IQD(card) ? 1 : 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); qeth_clean_channel(&card->data); destroy_workqueue(card->event_wq); qeth_free_qdio_queues(card); unregister_service_level(&card->qeth_service_level); dev_set_drvdata(&card->gdev->dev, NULL); kfree(card); } void qeth_trace_features(struct qeth_card *card) { QETH_CARD_TEXT(card, 2, "features"); QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4)); QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6)); QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp)); QETH_CARD_HEX(card, 2, &card->info.diagass_support, sizeof(card->info.diagass_support)); } EXPORT_SYMBOL_GPL(qeth_trace_features); 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, }; int qeth_core_hardsetup_card(struct qeth_card *card, bool *carrier_ok) { int retries = 3; int rc; QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); atomic_set(&card->force_alloc_skb, 0); rc = qeth_update_from_chp_desc(card); if (rc) return rc; retry: if (retries < 3) QETH_DBF_MESSAGE(2, "Retrying to do IDX activates on device %x.\n", CARD_DEVID(card)); rc = qeth_qdio_clear_card(card, !IS_IQD(card)); ccw_device_set_offline(CARD_DDEV(card)); ccw_device_set_offline(CARD_WDEV(card)); ccw_device_set_offline(CARD_RDEV(card)); qdio_free(CARD_DDEV(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; 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 < 0) goto out; else goto retry; } qeth_determine_capabilities(card); qeth_init_tokens(card); qeth_init_func_level(card); rc = qeth_idx_activate_read_channel(card); if (rc == -EINTR) { 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_write_channel(card); if (rc == -EINTR) { 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; } rc = qeth_send_startlan(card); if (rc) { QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); if (rc == -ENETDOWN) { dev_warn(&card->gdev->dev, "The LAN is offline\n"); *carrier_ok = false; } else { goto out; } } else { *carrier_ok = true; } card->options.ipa4.supported_funcs = 0; card->options.ipa6.supported_funcs = 0; card->options.adp.supported_funcs = 0; card->options.sbp.supported_funcs = 0; card->info.diagass_support = 0; rc = qeth_query_ipassists(card, QETH_PROT_IPV4); if (rc == -ENOMEM) goto out; if (qeth_is_supported(card, IPA_IPV6)) { rc = qeth_query_ipassists(card, QETH_PROT_IPV6); if (rc == -ENOMEM) goto out; } if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { rc = qeth_query_setadapterparms(card); if (rc < 0) { QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); goto out; } } if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { rc = qeth_query_setdiagass(card); if (rc < 0) { QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); goto out; } } 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, "Initialization for device %x failed in hardsetup! rc=%d\n", CARD_DEVID(card), rc); return rc; } EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); static void qeth_create_skb_frag(struct qdio_buffer_element *element, struct sk_buff *skb, int offset, int data_len) { struct page *page = virt_to_page(element->addr); unsigned int next_frag; /* first fill the linear space */ if (!skb->len) { unsigned int linear = min(data_len, skb_tailroom(skb)); skb_put_data(skb, element->addr + offset, linear); data_len -= linear; if (!data_len) return; offset += linear; /* fall through to add page frag for remaining data */ } next_frag = skb_shinfo(skb)->nr_frags; get_page(page); skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len); } static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale) { return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY); } 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; int skb_len = 0; void *data_ptr; int data_len; int headroom = 0; int use_rx_sg = 0; /* qeth_hdr must not cross element boundaries */ while (element->length < offset + sizeof(struct qeth_hdr)) { if (qeth_is_last_sbale(element)) return NULL; element++; offset = 0; } *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; 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) && !IS_OSN(card) && (!atomic_read(&card->force_alloc_skb))) || (card->options.cq == QETH_CQ_ENABLED)) use_rx_sg = 1; if (use_rx_sg && qethbuffer->rx_skb) { /* QETH_CQ_ENABLED only: */ skb = qethbuffer->rx_skb; qethbuffer->rx_skb = NULL; } else { unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len; skb = napi_alloc_skb(&card->napi, linear + 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) qeth_create_skb_frag(element, skb, offset, data_len); else skb_put_data(skb, 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); QETH_CARD_STAT_INC(card, rx_errors); return NULL; } element++; offset = 0; data_ptr = element->addr; } else { offset += data_len; } } *__element = element; *__offset = offset; if (use_rx_sg) { QETH_CARD_STAT_INC(card, rx_sg_skbs); QETH_CARD_STAT_ADD(card, rx_sg_frags, skb_shinfo(skb)->nr_frags); } return skb; no_mem: if (net_ratelimit()) { QETH_CARD_TEXT(card, 2, "noskbmem"); } QETH_CARD_STAT_INC(card, rx_dropped); return NULL; } EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); int qeth_poll(struct napi_struct *napi, int budget) { struct qeth_card *card = container_of(napi, struct qeth_card, napi); int work_done = 0; struct qeth_qdio_buffer *buffer; int done; int new_budget = budget; while (1) { if (!card->rx.b_count) { card->rx.qdio_err = 0; card->rx.b_count = qdio_get_next_buffers( card->data.ccwdev, 0, &card->rx.b_index, &card->rx.qdio_err); if (card->rx.b_count <= 0) { card->rx.b_count = 0; break; } card->rx.b_element = &card->qdio.in_q->bufs[card->rx.b_index] .buffer->element[0]; card->rx.e_offset = 0; } while (card->rx.b_count) { buffer = &card->qdio.in_q->bufs[card->rx.b_index]; if (!(card->rx.qdio_err && qeth_check_qdio_errors(card, buffer->buffer, card->rx.qdio_err, "qinerr"))) work_done += card->discipline->process_rx_buffer( card, new_budget, &done); else done = 1; if (done) { QETH_CARD_STAT_INC(card, rx_bufs); qeth_put_buffer_pool_entry(card, buffer->pool_entry); qeth_queue_input_buffer(card, card->rx.b_index); card->rx.b_count--; if (card->rx.b_count) { card->rx.b_index = (card->rx.b_index + 1) % QDIO_MAX_BUFFERS_PER_Q; card->rx.b_element = &card->qdio.in_q ->bufs[card->rx.b_index] .buffer->element[0]; card->rx.e_offset = 0; } } if (work_done >= budget) goto out; else new_budget = budget - work_done; } } napi_complete_done(napi, work_done); if (qdio_start_irq(card->data.ccwdev, 0)) napi_schedule(&card->napi); out: return work_done; } EXPORT_SYMBOL_GPL(qeth_poll); static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd) { if (!cmd->hdr.return_code) cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; return cmd->hdr.return_code; } static int qeth_setassparms_get_caps_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; struct qeth_ipa_caps *caps = reply->param; if (qeth_setassparms_inspect_rc(cmd)) return -EIO; caps->supported = cmd->data.setassparms.data.caps.supported; caps->enabled = cmd->data.setassparms.data.caps.enabled; return 0; } int qeth_setassparms_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; QETH_CARD_TEXT(card, 4, "defadpcb"); if (cmd->hdr.return_code) return -EIO; cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; if (cmd->hdr.prot_version == QETH_PROT_IPV4) card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; if (cmd->hdr.prot_version == QETH_PROT_IPV6) card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; return 0; } EXPORT_SYMBOL_GPL(qeth_setassparms_cb); struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code, __u16 len, enum qeth_prot_versions prot) { struct qeth_cmd_buffer *iob; struct qeth_ipa_cmd *cmd; QETH_CARD_TEXT(card, 4, "getasscm"); iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot); if (iob) { cmd = __ipa_cmd(iob); cmd->data.setassparms.hdr.assist_no = ipa_func; cmd->data.setassparms.hdr.length = 8 + len; cmd->data.setassparms.hdr.command_code = cmd_code; } return iob; } EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd); int qeth_send_simple_setassparms_prot(struct qeth_card *card, enum qeth_ipa_funcs ipa_func, u16 cmd_code, long data, enum qeth_prot_versions prot) { int length = 0; struct qeth_cmd_buffer *iob; QETH_CARD_TEXT_(card, 4, "simassp%i", prot); if (data) length = sizeof(__u32); iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, length, prot); if (!iob) return -ENOMEM; __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (__u32) data; return qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL); } EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms_prot); 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 (!debug_level_enabled(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; } static DEFINE_MUTEX(qeth_mod_mutex); /* for synchronized module loading */ int qeth_core_load_discipline(struct qeth_card *card, enum qeth_discipline_id discipline) { mutex_lock(&qeth_mod_mutex); switch (discipline) { case QETH_DISCIPLINE_LAYER3: card->discipline = try_then_request_module( symbol_get(qeth_l3_discipline), "qeth_l3"); break; case QETH_DISCIPLINE_LAYER2: card->discipline = try_then_request_module( symbol_get(qeth_l2_discipline), "qeth_l2"); break; default: break; } mutex_unlock(&qeth_mod_mutex); if (!card->discipline) { dev_err(&card->gdev->dev, "There is no kernel module to " "support discipline %d\n", discipline); return -EINVAL; } card->options.layer = discipline; return 0; } void qeth_core_free_discipline(struct qeth_card *card) { if (IS_LAYER2(card)) symbol_put(qeth_l2_discipline); else symbol_put(qeth_l3_discipline); card->options.layer = QETH_DISCIPLINE_UNDETERMINED; card->discipline = NULL; } const struct device_type qeth_generic_devtype = { .name = "qeth_generic", .groups = qeth_generic_attr_groups, }; EXPORT_SYMBOL_GPL(qeth_generic_devtype); static const struct device_type qeth_osn_devtype = { .name = "qeth_osn", .groups = qeth_osn_attr_groups, }; #define DBF_NAME_LEN 20 struct qeth_dbf_entry { char dbf_name[DBF_NAME_LEN]; debug_info_t *dbf_info; struct list_head dbf_list; }; static LIST_HEAD(qeth_dbf_list); static DEFINE_MUTEX(qeth_dbf_list_mutex); static debug_info_t *qeth_get_dbf_entry(char *name) { struct qeth_dbf_entry *entry; debug_info_t *rc = NULL; mutex_lock(&qeth_dbf_list_mutex); list_for_each_entry(entry, &qeth_dbf_list, dbf_list) { if (strcmp(entry->dbf_name, name) == 0) { rc = entry->dbf_info; break; } } mutex_unlock(&qeth_dbf_list_mutex); return rc; } static int qeth_add_dbf_entry(struct qeth_card *card, char *name) { struct qeth_dbf_entry *new_entry; card->debug = debug_register(name, 2, 1, 8); if (!card->debug) { QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf"); goto err; } if (debug_register_view(card->debug, &debug_hex_ascii_view)) goto err_dbg; new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL); if (!new_entry) goto err_dbg; strncpy(new_entry->dbf_name, name, DBF_NAME_LEN); new_entry->dbf_info = card->debug; mutex_lock(&qeth_dbf_list_mutex); list_add(&new_entry->dbf_list, &qeth_dbf_list); mutex_unlock(&qeth_dbf_list_mutex); return 0; err_dbg: debug_unregister(card->debug); err: return -ENOMEM; } static void qeth_clear_dbf_list(void) { struct qeth_dbf_entry *entry, *tmp; mutex_lock(&qeth_dbf_list_mutex); list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) { list_del(&entry->dbf_list); debug_unregister(entry->dbf_info); kfree(entry); } mutex_unlock(&qeth_dbf_list_mutex); } static struct net_device *qeth_alloc_netdev(struct qeth_card *card) { struct net_device *dev; switch (card->info.type) { case QETH_CARD_TYPE_IQD: dev = alloc_netdev_mqs(0, "hsi%d", NET_NAME_UNKNOWN, ether_setup, QETH_MAX_QUEUES, 1); break; case QETH_CARD_TYPE_OSM: dev = alloc_etherdev(0); break; case QETH_CARD_TYPE_OSN: dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup); break; default: dev = alloc_etherdev_mqs(0, QETH_MAX_QUEUES, 1); } if (!dev) return NULL; dev->ml_priv = card; dev->watchdog_timeo = QETH_TX_TIMEOUT; dev->min_mtu = IS_OSN(card) ? 64 : 576; /* initialized when device first goes online: */ dev->max_mtu = 0; dev->mtu = 0; SET_NETDEV_DEV(dev, &card->gdev->dev); netif_carrier_off(dev); if (IS_OSN(card)) { dev->ethtool_ops = &qeth_osn_ethtool_ops; } else { dev->ethtool_ops = &qeth_ethtool_ops; dev->priv_flags &= ~IFF_TX_SKB_SHARING; dev->hw_features |= NETIF_F_SG; dev->vlan_features |= NETIF_F_SG; if (IS_IQD(card)) { dev->features |= NETIF_F_SG; if (netif_set_real_num_tx_queues(dev, QETH_IQD_MIN_TXQ)) { free_netdev(dev); return NULL; } } } return dev; } struct net_device *qeth_clone_netdev(struct net_device *orig) { struct net_device *clone = qeth_alloc_netdev(orig->ml_priv); if (!clone) return NULL; clone->dev_port = orig->dev_port; return clone; } static int qeth_core_probe_device(struct ccwgroup_device *gdev) { struct qeth_card *card; struct device *dev; int rc; enum qeth_discipline_id enforced_disc; char dbf_name[DBF_NAME_LEN]; 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(gdev); 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 = qeth_get_dbf_entry(dbf_name); if (!card->debug) { rc = qeth_add_dbf_entry(card, dbf_name); if (rc) goto err_card; } qeth_setup_card(card); card->dev = qeth_alloc_netdev(card); if (!card->dev) { rc = -ENOMEM; goto err_card; } card->qdio.no_out_queues = card->dev->num_tx_queues; rc = qeth_update_from_chp_desc(card); if (rc) goto err_chp_desc; qeth_determine_capabilities(card); enforced_disc = qeth_enforce_discipline(card); switch (enforced_disc) { case QETH_DISCIPLINE_UNDETERMINED: gdev->dev.type = &qeth_generic_devtype; break; default: card->info.layer_enforced = true; rc = qeth_core_load_discipline(card, enforced_disc); if (rc) goto err_load; gdev->dev.type = IS_OSN(card) ? &qeth_osn_devtype : card->discipline->devtype; rc = card->discipline->setup(card->gdev); if (rc) goto err_disc; break; } return 0; err_disc: qeth_core_free_discipline(card); err_load: err_chp_desc: free_netdev(card->dev); err_card: qeth_core_free_card(card); err_dev: put_device(dev); return rc; } static void qeth_core_remove_device(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); QETH_DBF_TEXT(SETUP, 2, "removedv"); if (card->discipline) { card->discipline->remove(gdev); qeth_core_free_discipline(card); } free_netdev(card->dev); qeth_core_free_card(card); put_device(&gdev->dev); } static int qeth_core_set_online(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); int rc = 0; enum qeth_discipline_id def_discipline; if (!card->discipline) { def_discipline = IS_IQD(card) ? QETH_DISCIPLINE_LAYER3 : QETH_DISCIPLINE_LAYER2; rc = qeth_core_load_discipline(card, def_discipline); if (rc) goto err; rc = card->discipline->setup(card->gdev); if (rc) { qeth_core_free_discipline(card); goto err; } } rc = card->discipline->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->set_offline(gdev); } static void qeth_core_shutdown(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); qeth_set_allowed_threads(card, 0, 1); if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); qeth_qdio_clear_card(card, 0); qeth_drain_output_queues(card); qdio_free(CARD_DDEV(card)); } static int qeth_core_freeze(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); if (card->discipline && card->discipline->freeze) return card->discipline->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 && card->discipline->thaw) return card->discipline->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 && card->discipline->restore) return card->discipline->restore(gdev); return 0; } static ssize_t group_store(struct device_driver *ddrv, const char *buf, size_t count) { int err; err = ccwgroup_create_dev(qeth_core_root_dev, to_ccwgroupdrv(ddrv), 3, buf); return err ? err : count; } static DRIVER_ATTR_WO(group); static struct attribute *qeth_drv_attrs[] = { &driver_attr_group.attr, NULL, }; static struct attribute_group qeth_drv_attr_group = { .attrs = qeth_drv_attrs, }; static const struct attribute_group *qeth_drv_attr_groups[] = { &qeth_drv_attr_group, NULL, }; static struct ccwgroup_driver qeth_core_ccwgroup_driver = { .driver = { .groups = qeth_drv_attr_groups, .owner = THIS_MODULE, .name = "qeth", }, .ccw_driver = &qeth_ccw_driver, .setup = 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 = NULL, .complete = NULL, .freeze = qeth_core_freeze, .thaw = qeth_core_thaw, .restore = qeth_core_restore, }; struct qeth_card *qeth_get_card_by_busid(char *bus_id) { struct ccwgroup_device *gdev; struct qeth_card *card; gdev = get_ccwgroupdev_by_busid(&qeth_core_ccwgroup_driver, bus_id); if (!gdev) return NULL; card = dev_get_drvdata(&gdev->dev); put_device(&gdev->dev); return card; } EXPORT_SYMBOL_GPL(qeth_get_card_by_busid); int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) { struct qeth_card *card = dev->ml_priv; struct mii_ioctl_data *mii_data; int rc = 0; if (!card) return -ENODEV; switch (cmd) { case SIOC_QETH_ADP_SET_SNMP_CONTROL: rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); break; case SIOC_QETH_GET_CARD_TYPE: if ((IS_OSD(card) || IS_OSM(card) || IS_OSX(card)) && !IS_VM_NIC(card)) return 1; return 0; case SIOCGMIIPHY: mii_data = if_mii(rq); mii_data->phy_id = 0; break; case SIOCGMIIREG: mii_data = if_mii(rq); if (mii_data->phy_id != 0) rc = -EINVAL; else mii_data->val_out = qeth_mdio_read(dev, mii_data->phy_id, mii_data->reg_num); break; case SIOC_QETH_QUERY_OAT: rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); break; default: if (card->discipline->do_ioctl) rc = card->discipline->do_ioctl(dev, rq, cmd); else rc = -EOPNOTSUPP; } if (rc) QETH_CARD_TEXT_(card, 2, "ioce%x", rc); return rc; } EXPORT_SYMBOL_GPL(qeth_do_ioctl); static int qeth_start_csum_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; u32 *features = reply->param; if (qeth_setassparms_inspect_rc(cmd)) return -EIO; *features = cmd->data.setassparms.data.flags_32bit; return 0; } static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype, enum qeth_prot_versions prot) { return qeth_send_simple_setassparms_prot(card, cstype, IPA_CMD_ASS_STOP, 0, prot); } static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype, enum qeth_prot_versions prot) { u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP; struct qeth_cmd_buffer *iob; struct qeth_ipa_caps caps; u32 features; int rc; /* some L3 HW requires combined L3+L4 csum offload: */ if (IS_LAYER3(card) && prot == QETH_PROT_IPV4 && cstype == IPA_OUTBOUND_CHECKSUM) required_features |= QETH_IPA_CHECKSUM_IP_HDR; iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_START, 0, prot); if (!iob) return -ENOMEM; rc = qeth_send_ipa_cmd(card, iob, qeth_start_csum_cb, &features); if (rc) return rc; if ((required_features & features) != required_features) { qeth_set_csum_off(card, cstype, prot); return -EOPNOTSUPP; } iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 4, prot); if (!iob) { qeth_set_csum_off(card, cstype, prot); return -ENOMEM; } if (features & QETH_IPA_CHECKSUM_LP2LP) required_features |= QETH_IPA_CHECKSUM_LP2LP; __ipa_cmd(iob)->data.setassparms.data.flags_32bit = required_features; rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps); if (rc) { qeth_set_csum_off(card, cstype, prot); return rc; } if (!qeth_ipa_caps_supported(&caps, required_features) || !qeth_ipa_caps_enabled(&caps, required_features)) { qeth_set_csum_off(card, cstype, prot); return -EOPNOTSUPP; } dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n", cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot); if (!qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP) && cstype == IPA_OUTBOUND_CHECKSUM) dev_warn(&card->gdev->dev, "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", QETH_CARD_IFNAME(card)); return 0; } static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype, enum qeth_prot_versions prot) { return on ? qeth_set_csum_on(card, cstype, prot) : qeth_set_csum_off(card, cstype, prot); } static int qeth_start_tso_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; struct qeth_tso_start_data *tso_data = reply->param; if (qeth_setassparms_inspect_rc(cmd)) return -EIO; tso_data->mss = cmd->data.setassparms.data.tso.mss; tso_data->supported = cmd->data.setassparms.data.tso.supported; return 0; } static int qeth_set_tso_off(struct qeth_card *card, enum qeth_prot_versions prot) { return qeth_send_simple_setassparms_prot(card, IPA_OUTBOUND_TSO, IPA_CMD_ASS_STOP, 0, prot); } static int qeth_set_tso_on(struct qeth_card *card, enum qeth_prot_versions prot) { struct qeth_tso_start_data tso_data; struct qeth_cmd_buffer *iob; struct qeth_ipa_caps caps; int rc; iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO, IPA_CMD_ASS_START, 0, prot); if (!iob) return -ENOMEM; rc = qeth_send_ipa_cmd(card, iob, qeth_start_tso_cb, &tso_data); if (rc) return rc; if (!tso_data.mss || !(tso_data.supported & QETH_IPA_LARGE_SEND_TCP)) { qeth_set_tso_off(card, prot); return -EOPNOTSUPP; } iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO, IPA_CMD_ASS_ENABLE, sizeof(caps), prot); if (!iob) { qeth_set_tso_off(card, prot); return -ENOMEM; } /* enable TSO capability */ __ipa_cmd(iob)->data.setassparms.data.caps.enabled = QETH_IPA_LARGE_SEND_TCP; rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_get_caps_cb, &caps); if (rc) { qeth_set_tso_off(card, prot); return rc; } if (!qeth_ipa_caps_supported(&caps, QETH_IPA_LARGE_SEND_TCP) || !qeth_ipa_caps_enabled(&caps, QETH_IPA_LARGE_SEND_TCP)) { qeth_set_tso_off(card, prot); return -EOPNOTSUPP; } dev_info(&card->gdev->dev, "TSOv%u enabled (MSS: %u)\n", prot, tso_data.mss); return 0; } static int qeth_set_ipa_tso(struct qeth_card *card, bool on, enum qeth_prot_versions prot) { return on ? qeth_set_tso_on(card, prot) : qeth_set_tso_off(card, prot); } static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on) { int rc_ipv4 = (on) ? -EOPNOTSUPP : 0; int rc_ipv6; if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, QETH_PROT_IPV4); if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) /* no/one Offload Assist available, so the rc is trivial */ return rc_ipv4; rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, QETH_PROT_IPV6); if (on) /* enable: success if any Assist is active */ return (rc_ipv6) ? rc_ipv4 : 0; /* disable: failure if any Assist is still active */ return (rc_ipv6) ? rc_ipv6 : rc_ipv4; } /** * qeth_enable_hw_features() - (Re-)Enable HW functions for device features * @dev: a net_device */ void qeth_enable_hw_features(struct net_device *dev) { struct qeth_card *card = dev->ml_priv; netdev_features_t features; features = dev->features; /* force-off any feature that might need an IPA sequence. * netdev_update_features() will restart them. */ dev->features &= ~dev->hw_features; /* toggle VLAN filter, so that VIDs are re-programmed: */ if (IS_LAYER2(card) && IS_VM_NIC(card)) { dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; dev->wanted_features |= NETIF_F_HW_VLAN_CTAG_FILTER; } netdev_update_features(dev); if (features != dev->features) dev_warn(&card->gdev->dev, "Device recovery failed to restore all offload features\n"); } EXPORT_SYMBOL_GPL(qeth_enable_hw_features); int qeth_set_features(struct net_device *dev, netdev_features_t features) { struct qeth_card *card = dev->ml_priv; netdev_features_t changed = dev->features ^ features; int rc = 0; QETH_DBF_TEXT(SETUP, 2, "setfeat"); QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); if ((changed & NETIF_F_IP_CSUM)) { rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM, IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4); if (rc) changed ^= NETIF_F_IP_CSUM; } if (changed & NETIF_F_IPV6_CSUM) { rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM, IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6); if (rc) changed ^= NETIF_F_IPV6_CSUM; } if (changed & NETIF_F_RXCSUM) { rc = qeth_set_ipa_rx_csum(card, features & NETIF_F_RXCSUM); if (rc) changed ^= NETIF_F_RXCSUM; } if (changed & NETIF_F_TSO) { rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO, QETH_PROT_IPV4); if (rc) changed ^= NETIF_F_TSO; } if (changed & NETIF_F_TSO6) { rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO6, QETH_PROT_IPV6); if (rc) changed ^= NETIF_F_TSO6; } /* everything changed successfully? */ if ((dev->features ^ features) == changed) return 0; /* something went wrong. save changed features and return error */ dev->features ^= changed; return -EIO; } EXPORT_SYMBOL_GPL(qeth_set_features); netdev_features_t qeth_fix_features(struct net_device *dev, netdev_features_t features) { struct qeth_card *card = dev->ml_priv; QETH_DBF_TEXT(SETUP, 2, "fixfeat"); if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) features &= ~NETIF_F_IP_CSUM; if (!qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) features &= ~NETIF_F_IPV6_CSUM; if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM) && !qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) features &= ~NETIF_F_RXCSUM; if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) features &= ~NETIF_F_TSO; if (!qeth_is_supported6(card, IPA_OUTBOUND_TSO)) features &= ~NETIF_F_TSO6; QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); return features; } EXPORT_SYMBOL_GPL(qeth_fix_features); netdev_features_t qeth_features_check(struct sk_buff *skb, struct net_device *dev, netdev_features_t features) { /* GSO segmentation builds skbs with * a (small) linear part for the headers, and * page frags for the data. * Compared to a linear skb, the header-only part consumes an * additional buffer element. This reduces buffer utilization, and * hurts throughput. So compress small segments into one element. */ if (netif_needs_gso(skb, features)) { /* match skb_segment(): */ unsigned int doffset = skb->data - skb_mac_header(skb); unsigned int hsize = skb_shinfo(skb)->gso_size; unsigned int hroom = skb_headroom(skb); /* linearize only if resulting skb allocations are order-0: */ if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0)) features &= ~NETIF_F_SG; } return vlan_features_check(skb, features); } EXPORT_SYMBOL_GPL(qeth_features_check); void qeth_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) { struct qeth_card *card = dev->ml_priv; struct qeth_qdio_out_q *queue; unsigned int i; QETH_CARD_TEXT(card, 5, "getstat"); stats->rx_packets = card->stats.rx_packets; stats->rx_bytes = card->stats.rx_bytes; stats->rx_errors = card->stats.rx_errors; stats->rx_dropped = card->stats.rx_dropped; stats->multicast = card->stats.rx_multicast; for (i = 0; i < card->qdio.no_out_queues; i++) { queue = card->qdio.out_qs[i]; stats->tx_packets += queue->stats.tx_packets; stats->tx_bytes += queue->stats.tx_bytes; stats->tx_errors += queue->stats.tx_errors; stats->tx_dropped += queue->stats.tx_dropped; } } EXPORT_SYMBOL_GPL(qeth_get_stats64); u16 qeth_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, u8 cast_type, struct net_device *sb_dev) { if (cast_type != RTN_UNICAST) return QETH_IQD_MCAST_TXQ; return QETH_IQD_MIN_UCAST_TXQ; } EXPORT_SYMBOL_GPL(qeth_iqd_select_queue); int qeth_open(struct net_device *dev) { struct qeth_card *card = dev->ml_priv; QETH_CARD_TEXT(card, 4, "qethopen"); if (qdio_stop_irq(CARD_DDEV(card), 0) < 0) return -EIO; card->data.state = CH_STATE_UP; netif_tx_start_all_queues(dev); napi_enable(&card->napi); local_bh_disable(); napi_schedule(&card->napi); /* kick-start the NAPI softirq: */ local_bh_enable(); return 0; } EXPORT_SYMBOL_GPL(qeth_open); int qeth_stop(struct net_device *dev) { struct qeth_card *card = dev->ml_priv; QETH_CARD_TEXT(card, 4, "qethstop"); netif_tx_disable(dev); napi_disable(&card->napi); return 0; } EXPORT_SYMBOL_GPL(qeth_stop); static int __init qeth_core_init(void) { int rc; pr_info("loading core functions\n"); rc = qeth_register_dbf_views(); if (rc) goto dbf_err; qeth_core_root_dev = root_device_register("qeth"); rc = PTR_ERR_OR_ZERO(qeth_core_root_dev); if (rc) goto register_err; qeth_core_header_cache = kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE, roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE), 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; } 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; return 0; ccwgroup_err: ccw_driver_unregister(&qeth_ccw_driver); ccw_err: kmem_cache_destroy(qeth_qdio_outbuf_cache); cqslab_err: kmem_cache_destroy(qeth_core_header_cache); slab_err: root_device_unregister(qeth_core_root_dev); register_err: qeth_unregister_dbf_views(); dbf_err: pr_err("Initializing the qeth device driver failed\n"); return rc; } static void __exit qeth_core_exit(void) { qeth_clear_dbf_list(); 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); root_device_unregister(qeth_core_root_dev); qeth_unregister_dbf_views(); pr_info("core functions removed\n"); } module_init(qeth_core_init); module_exit(qeth_core_exit); MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); MODULE_DESCRIPTION("qeth core functions"); MODULE_LICENSE("GPL");
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