2 * This file is part of the Chelsio T4 PCI-E SR-IOV Virtual Function Ethernet
5 * Copyright (c) 2009-2010 Chelsio Communications, Inc. All rights reserved.
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
38 #include <linux/module.h>
39 #include <linux/moduleparam.h>
40 #include <linux/init.h>
41 #include <linux/pci.h>
42 #include <linux/dma-mapping.h>
43 #include <linux/netdevice.h>
44 #include <linux/etherdevice.h>
45 #include <linux/debugfs.h>
46 #include <linux/ethtool.h>
47 #include <linux/mdio.h>
49 #include "t4vf_common.h"
50 #include "t4vf_defs.h"
52 #include "../cxgb4/t4_regs.h"
53 #include "../cxgb4/t4_msg.h"
56 * Generic information about the driver.
58 #define DRV_VERSION "2.0.0-ko"
59 #define DRV_DESC "Chelsio T4/T5/T6 Virtual Function (VF) Network Driver"
67 * Default ethtool "message level" for adapters.
69 #define DFLT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | \
70 NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP |\
71 NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
73 static int dflt_msg_enable = DFLT_MSG_ENABLE;
75 module_param(dflt_msg_enable, int, 0644);
76 MODULE_PARM_DESC(dflt_msg_enable,
77 "default adapter ethtool message level bitmap, "
78 "deprecated parameter");
81 * The driver uses the best interrupt scheme available on a platform in the
82 * order MSI-X then MSI. This parameter determines which of these schemes the
83 * driver may consider as follows:
85 * msi = 2: choose from among MSI-X and MSI
86 * msi = 1: only consider MSI interrupts
88 * Note that unlike the Physical Function driver, this Virtual Function driver
89 * does _not_ support legacy INTx interrupts (this limitation is mandated by
90 * the PCI-E SR-IOV standard).
94 #define MSI_DEFAULT MSI_MSIX
96 static int msi = MSI_DEFAULT;
98 module_param(msi, int, 0644);
99 MODULE_PARM_DESC(msi, "whether to use MSI-X or MSI");
102 * Fundamental constants.
103 * ======================
107 MAX_TXQ_ENTRIES = 16384,
108 MAX_RSPQ_ENTRIES = 16384,
109 MAX_RX_BUFFERS = 16384,
111 MIN_TXQ_ENTRIES = 32,
112 MIN_RSPQ_ENTRIES = 128,
116 * For purposes of manipulating the Free List size we need to
117 * recognize that Free Lists are actually Egress Queues (the host
118 * produces free buffers which the hardware consumes), Egress Queues
119 * indices are all in units of Egress Context Units bytes, and free
120 * list entries are 64-bit PCI DMA addresses. And since the state of
121 * the Producer Index == the Consumer Index implies an EMPTY list, we
122 * always have at least one Egress Unit's worth of Free List entries
123 * unused. See sge.c for more details ...
125 EQ_UNIT = SGE_EQ_IDXSIZE,
126 FL_PER_EQ_UNIT = EQ_UNIT / sizeof(__be64),
127 MIN_FL_RESID = FL_PER_EQ_UNIT,
131 * Global driver state.
132 * ====================
135 static struct dentry *cxgb4vf_debugfs_root;
138 * OS "Callback" functions.
139 * ========================
143 * The link status has changed on the indicated "port" (Virtual Interface).
145 void t4vf_os_link_changed(struct adapter *adapter, int pidx, int link_ok)
147 struct net_device *dev = adapter->port[pidx];
150 * If the port is disabled or the current recorded "link up"
151 * status matches the new status, just return.
153 if (!netif_running(dev) || link_ok == netif_carrier_ok(dev))
157 * Tell the OS that the link status has changed and print a short
158 * informative message on the console about the event.
163 const struct port_info *pi = netdev_priv(dev);
165 netif_carrier_on(dev);
167 switch (pi->link_cfg.speed) {
189 switch (pi->link_cfg.fc) {
198 case PAUSE_RX|PAUSE_TX:
207 netdev_info(dev, "link up, %s, full-duplex, %s PAUSE\n", s, fc);
209 netif_carrier_off(dev);
210 netdev_info(dev, "link down\n");
215 * THe port module type has changed on the indicated "port" (Virtual
218 void t4vf_os_portmod_changed(struct adapter *adapter, int pidx)
220 static const char * const mod_str[] = {
221 NULL, "LR", "SR", "ER", "passive DA", "active DA", "LRM"
223 const struct net_device *dev = adapter->port[pidx];
224 const struct port_info *pi = netdev_priv(dev);
226 if (pi->mod_type == FW_PORT_MOD_TYPE_NONE)
227 dev_info(adapter->pdev_dev, "%s: port module unplugged\n",
229 else if (pi->mod_type < ARRAY_SIZE(mod_str))
230 dev_info(adapter->pdev_dev, "%s: %s port module inserted\n",
231 dev->name, mod_str[pi->mod_type]);
232 else if (pi->mod_type == FW_PORT_MOD_TYPE_NOTSUPPORTED)
233 dev_info(adapter->pdev_dev, "%s: unsupported optical port "
234 "module inserted\n", dev->name);
235 else if (pi->mod_type == FW_PORT_MOD_TYPE_UNKNOWN)
236 dev_info(adapter->pdev_dev, "%s: unknown port module inserted,"
237 "forcing TWINAX\n", dev->name);
238 else if (pi->mod_type == FW_PORT_MOD_TYPE_ERROR)
239 dev_info(adapter->pdev_dev, "%s: transceiver module error\n",
242 dev_info(adapter->pdev_dev, "%s: unknown module type %d "
243 "inserted\n", dev->name, pi->mod_type);
247 * Net device operations.
248 * ======================
255 * Perform the MAC and PHY actions needed to enable a "port" (Virtual
258 static int link_start(struct net_device *dev)
261 struct port_info *pi = netdev_priv(dev);
264 * We do not set address filters and promiscuity here, the stack does
265 * that step explicitly. Enable vlan accel.
267 ret = t4vf_set_rxmode(pi->adapter, pi->viid, dev->mtu, -1, -1, -1, 1,
270 ret = t4vf_change_mac(pi->adapter, pi->viid,
271 pi->xact_addr_filt, dev->dev_addr, true);
273 pi->xact_addr_filt = ret;
279 * We don't need to actually "start the link" itself since the
280 * firmware will do that for us when the first Virtual Interface
281 * is enabled on a port.
284 ret = t4vf_enable_vi(pi->adapter, pi->viid, true, true);
289 * Name the MSI-X interrupts.
291 static void name_msix_vecs(struct adapter *adapter)
293 int namelen = sizeof(adapter->msix_info[0].desc) - 1;
299 snprintf(adapter->msix_info[MSIX_FW].desc, namelen,
300 "%s-FWeventq", adapter->name);
301 adapter->msix_info[MSIX_FW].desc[namelen] = 0;
306 for_each_port(adapter, pidx) {
307 struct net_device *dev = adapter->port[pidx];
308 const struct port_info *pi = netdev_priv(dev);
311 for (qs = 0, msi = MSIX_IQFLINT; qs < pi->nqsets; qs++, msi++) {
312 snprintf(adapter->msix_info[msi].desc, namelen,
313 "%s-%d", dev->name, qs);
314 adapter->msix_info[msi].desc[namelen] = 0;
320 * Request all of our MSI-X resources.
322 static int request_msix_queue_irqs(struct adapter *adapter)
324 struct sge *s = &adapter->sge;
330 err = request_irq(adapter->msix_info[MSIX_FW].vec, t4vf_sge_intr_msix,
331 0, adapter->msix_info[MSIX_FW].desc, &s->fw_evtq);
339 for_each_ethrxq(s, rxq) {
340 err = request_irq(adapter->msix_info[msi].vec,
341 t4vf_sge_intr_msix, 0,
342 adapter->msix_info[msi].desc,
343 &s->ethrxq[rxq].rspq);
352 free_irq(adapter->msix_info[--msi].vec, &s->ethrxq[rxq].rspq);
353 free_irq(adapter->msix_info[MSIX_FW].vec, &s->fw_evtq);
358 * Free our MSI-X resources.
360 static void free_msix_queue_irqs(struct adapter *adapter)
362 struct sge *s = &adapter->sge;
365 free_irq(adapter->msix_info[MSIX_FW].vec, &s->fw_evtq);
367 for_each_ethrxq(s, rxq)
368 free_irq(adapter->msix_info[msi++].vec,
369 &s->ethrxq[rxq].rspq);
373 * Turn on NAPI and start up interrupts on a response queue.
375 static void qenable(struct sge_rspq *rspq)
377 napi_enable(&rspq->napi);
380 * 0-increment the Going To Sleep register to start the timer and
383 t4_write_reg(rspq->adapter, T4VF_SGE_BASE_ADDR + SGE_VF_GTS,
385 SEINTARM_V(rspq->intr_params) |
386 INGRESSQID_V(rspq->cntxt_id));
390 * Enable NAPI scheduling and interrupt generation for all Receive Queues.
392 static void enable_rx(struct adapter *adapter)
395 struct sge *s = &adapter->sge;
397 for_each_ethrxq(s, rxq)
398 qenable(&s->ethrxq[rxq].rspq);
399 qenable(&s->fw_evtq);
402 * The interrupt queue doesn't use NAPI so we do the 0-increment of
403 * its Going To Sleep register here to get it started.
405 if (adapter->flags & USING_MSI)
406 t4_write_reg(adapter, T4VF_SGE_BASE_ADDR + SGE_VF_GTS,
408 SEINTARM_V(s->intrq.intr_params) |
409 INGRESSQID_V(s->intrq.cntxt_id));
414 * Wait until all NAPI handlers are descheduled.
416 static void quiesce_rx(struct adapter *adapter)
418 struct sge *s = &adapter->sge;
421 for_each_ethrxq(s, rxq)
422 napi_disable(&s->ethrxq[rxq].rspq.napi);
423 napi_disable(&s->fw_evtq.napi);
427 * Response queue handler for the firmware event queue.
429 static int fwevtq_handler(struct sge_rspq *rspq, const __be64 *rsp,
430 const struct pkt_gl *gl)
433 * Extract response opcode and get pointer to CPL message body.
435 struct adapter *adapter = rspq->adapter;
436 u8 opcode = ((const struct rss_header *)rsp)->opcode;
437 void *cpl = (void *)(rsp + 1);
442 * We've received an asynchronous message from the firmware.
444 const struct cpl_fw6_msg *fw_msg = cpl;
445 if (fw_msg->type == FW6_TYPE_CMD_RPL)
446 t4vf_handle_fw_rpl(adapter, fw_msg->data);
451 /* FW can send EGR_UPDATEs encapsulated in a CPL_FW4_MSG.
453 const struct cpl_sge_egr_update *p = (void *)(rsp + 3);
454 opcode = CPL_OPCODE_G(ntohl(p->opcode_qid));
455 if (opcode != CPL_SGE_EGR_UPDATE) {
456 dev_err(adapter->pdev_dev, "unexpected FW4/CPL %#x on FW event queue\n"
464 case CPL_SGE_EGR_UPDATE: {
466 * We've received an Egress Queue Status Update message. We
467 * get these, if the SGE is configured to send these when the
468 * firmware passes certain points in processing our TX
469 * Ethernet Queue or if we make an explicit request for one.
470 * We use these updates to determine when we may need to
471 * restart a TX Ethernet Queue which was stopped for lack of
472 * free TX Queue Descriptors ...
474 const struct cpl_sge_egr_update *p = cpl;
475 unsigned int qid = EGR_QID_G(be32_to_cpu(p->opcode_qid));
476 struct sge *s = &adapter->sge;
478 struct sge_eth_txq *txq;
482 * Perform sanity checking on the Queue ID to make sure it
483 * really refers to one of our TX Ethernet Egress Queues which
484 * is active and matches the queue's ID. None of these error
485 * conditions should ever happen so we may want to either make
486 * them fatal and/or conditionalized under DEBUG.
488 eq_idx = EQ_IDX(s, qid);
489 if (unlikely(eq_idx >= MAX_EGRQ)) {
490 dev_err(adapter->pdev_dev,
491 "Egress Update QID %d out of range\n", qid);
494 tq = s->egr_map[eq_idx];
495 if (unlikely(tq == NULL)) {
496 dev_err(adapter->pdev_dev,
497 "Egress Update QID %d TXQ=NULL\n", qid);
500 txq = container_of(tq, struct sge_eth_txq, q);
501 if (unlikely(tq->abs_id != qid)) {
502 dev_err(adapter->pdev_dev,
503 "Egress Update QID %d refers to TXQ %d\n",
509 * Restart a stopped TX Queue which has less than half of its
513 netif_tx_wake_queue(txq->txq);
518 dev_err(adapter->pdev_dev,
519 "unexpected CPL %#x on FW event queue\n", opcode);
526 * Allocate SGE TX/RX response queues. Determine how many sets of SGE queues
527 * to use and initializes them. We support multiple "Queue Sets" per port if
528 * we have MSI-X, otherwise just one queue set per port.
530 static int setup_sge_queues(struct adapter *adapter)
532 struct sge *s = &adapter->sge;
536 * Clear "Queue Set" Free List Starving and TX Queue Mapping Error
539 bitmap_zero(s->starving_fl, MAX_EGRQ);
542 * If we're using MSI interrupt mode we need to set up a "forwarded
543 * interrupt" queue which we'll set up with our MSI vector. The rest
544 * of the ingress queues will be set up to forward their interrupts to
545 * this queue ... This must be first since t4vf_sge_alloc_rxq() uses
546 * the intrq's queue ID as the interrupt forwarding queue for the
547 * subsequent calls ...
549 if (adapter->flags & USING_MSI) {
550 err = t4vf_sge_alloc_rxq(adapter, &s->intrq, false,
551 adapter->port[0], 0, NULL, NULL);
553 goto err_free_queues;
557 * Allocate our ingress queue for asynchronous firmware messages.
559 err = t4vf_sge_alloc_rxq(adapter, &s->fw_evtq, true, adapter->port[0],
560 MSIX_FW, NULL, fwevtq_handler);
562 goto err_free_queues;
565 * Allocate each "port"'s initial Queue Sets. These can be changed
566 * later on ... up to the point where any interface on the adapter is
567 * brought up at which point lots of things get nailed down
571 for_each_port(adapter, pidx) {
572 struct net_device *dev = adapter->port[pidx];
573 struct port_info *pi = netdev_priv(dev);
574 struct sge_eth_rxq *rxq = &s->ethrxq[pi->first_qset];
575 struct sge_eth_txq *txq = &s->ethtxq[pi->first_qset];
578 for (qs = 0; qs < pi->nqsets; qs++, rxq++, txq++) {
579 err = t4vf_sge_alloc_rxq(adapter, &rxq->rspq, false,
581 &rxq->fl, t4vf_ethrx_handler);
583 goto err_free_queues;
585 err = t4vf_sge_alloc_eth_txq(adapter, txq, dev,
586 netdev_get_tx_queue(dev, qs),
587 s->fw_evtq.cntxt_id);
589 goto err_free_queues;
592 memset(&rxq->stats, 0, sizeof(rxq->stats));
597 * Create the reverse mappings for the queues.
599 s->egr_base = s->ethtxq[0].q.abs_id - s->ethtxq[0].q.cntxt_id;
600 s->ingr_base = s->ethrxq[0].rspq.abs_id - s->ethrxq[0].rspq.cntxt_id;
601 IQ_MAP(s, s->fw_evtq.abs_id) = &s->fw_evtq;
602 for_each_port(adapter, pidx) {
603 struct net_device *dev = adapter->port[pidx];
604 struct port_info *pi = netdev_priv(dev);
605 struct sge_eth_rxq *rxq = &s->ethrxq[pi->first_qset];
606 struct sge_eth_txq *txq = &s->ethtxq[pi->first_qset];
609 for (qs = 0; qs < pi->nqsets; qs++, rxq++, txq++) {
610 IQ_MAP(s, rxq->rspq.abs_id) = &rxq->rspq;
611 EQ_MAP(s, txq->q.abs_id) = &txq->q;
614 * The FW_IQ_CMD doesn't return the Absolute Queue IDs
615 * for Free Lists but since all of the Egress Queues
616 * (including Free Lists) have Relative Queue IDs
617 * which are computed as Absolute - Base Queue ID, we
618 * can synthesize the Absolute Queue IDs for the Free
619 * Lists. This is useful for debugging purposes when
620 * we want to dump Queue Contexts via the PF Driver.
622 rxq->fl.abs_id = rxq->fl.cntxt_id + s->egr_base;
623 EQ_MAP(s, rxq->fl.abs_id) = &rxq->fl;
629 t4vf_free_sge_resources(adapter);
634 * Set up Receive Side Scaling (RSS) to distribute packets to multiple receive
635 * queues. We configure the RSS CPU lookup table to distribute to the number
636 * of HW receive queues, and the response queue lookup table to narrow that
637 * down to the response queues actually configured for each "port" (Virtual
638 * Interface). We always configure the RSS mapping for all ports since the
639 * mapping table has plenty of entries.
641 static int setup_rss(struct adapter *adapter)
645 for_each_port(adapter, pidx) {
646 struct port_info *pi = adap2pinfo(adapter, pidx);
647 struct sge_eth_rxq *rxq = &adapter->sge.ethrxq[pi->first_qset];
648 u16 rss[MAX_PORT_QSETS];
651 for (qs = 0; qs < pi->nqsets; qs++)
652 rss[qs] = rxq[qs].rspq.abs_id;
654 err = t4vf_config_rss_range(adapter, pi->viid,
655 0, pi->rss_size, rss, pi->nqsets);
660 * Perform Global RSS Mode-specific initialization.
662 switch (adapter->params.rss.mode) {
663 case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL:
665 * If Tunnel All Lookup isn't specified in the global
666 * RSS Configuration, then we need to specify a
667 * default Ingress Queue for any ingress packets which
668 * aren't hashed. We'll use our first ingress queue
671 if (!adapter->params.rss.u.basicvirtual.tnlalllookup) {
672 union rss_vi_config config;
673 err = t4vf_read_rss_vi_config(adapter,
678 config.basicvirtual.defaultq =
680 err = t4vf_write_rss_vi_config(adapter,
694 * Bring the adapter up. Called whenever we go from no "ports" open to having
695 * one open. This function performs the actions necessary to make an adapter
696 * operational, such as completing the initialization of HW modules, and
697 * enabling interrupts. Must be called with the rtnl lock held. (Note that
698 * this is called "cxgb_up" in the PF Driver.)
700 static int adapter_up(struct adapter *adapter)
705 * If this is the first time we've been called, perform basic
706 * adapter setup. Once we've done this, many of our adapter
707 * parameters can no longer be changed ...
709 if ((adapter->flags & FULL_INIT_DONE) == 0) {
710 err = setup_sge_queues(adapter);
713 err = setup_rss(adapter);
715 t4vf_free_sge_resources(adapter);
719 if (adapter->flags & USING_MSIX)
720 name_msix_vecs(adapter);
721 adapter->flags |= FULL_INIT_DONE;
725 * Acquire our interrupt resources. We only support MSI-X and MSI.
727 BUG_ON((adapter->flags & (USING_MSIX|USING_MSI)) == 0);
728 if (adapter->flags & USING_MSIX)
729 err = request_msix_queue_irqs(adapter);
731 err = request_irq(adapter->pdev->irq,
732 t4vf_intr_handler(adapter), 0,
733 adapter->name, adapter);
735 dev_err(adapter->pdev_dev, "request_irq failed, err %d\n",
741 * Enable NAPI ingress processing and return success.
744 t4vf_sge_start(adapter);
746 /* Initialize hash mac addr list*/
747 INIT_LIST_HEAD(&adapter->mac_hlist);
752 * Bring the adapter down. Called whenever the last "port" (Virtual
753 * Interface) closed. (Note that this routine is called "cxgb_down" in the PF
756 static void adapter_down(struct adapter *adapter)
759 * Free interrupt resources.
761 if (adapter->flags & USING_MSIX)
762 free_msix_queue_irqs(adapter);
764 free_irq(adapter->pdev->irq, adapter);
767 * Wait for NAPI handlers to finish.
773 * Start up a net device.
775 static int cxgb4vf_open(struct net_device *dev)
778 struct port_info *pi = netdev_priv(dev);
779 struct adapter *adapter = pi->adapter;
782 * If this is the first interface that we're opening on the "adapter",
783 * bring the "adapter" up now.
785 if (adapter->open_device_map == 0) {
786 err = adapter_up(adapter);
792 * Note that this interface is up and start everything up ...
794 err = link_start(dev);
798 netif_tx_start_all_queues(dev);
799 set_bit(pi->port_id, &adapter->open_device_map);
803 if (adapter->open_device_map == 0)
804 adapter_down(adapter);
809 * Shut down a net device. This routine is called "cxgb_close" in the PF
812 static int cxgb4vf_stop(struct net_device *dev)
814 struct port_info *pi = netdev_priv(dev);
815 struct adapter *adapter = pi->adapter;
817 netif_tx_stop_all_queues(dev);
818 netif_carrier_off(dev);
819 t4vf_enable_vi(adapter, pi->viid, false, false);
820 pi->link_cfg.link_ok = 0;
822 clear_bit(pi->port_id, &adapter->open_device_map);
823 if (adapter->open_device_map == 0)
824 adapter_down(adapter);
829 * Translate our basic statistics into the standard "ifconfig" statistics.
831 static struct net_device_stats *cxgb4vf_get_stats(struct net_device *dev)
833 struct t4vf_port_stats stats;
834 struct port_info *pi = netdev2pinfo(dev);
835 struct adapter *adapter = pi->adapter;
836 struct net_device_stats *ns = &dev->stats;
839 spin_lock(&adapter->stats_lock);
840 err = t4vf_get_port_stats(adapter, pi->pidx, &stats);
841 spin_unlock(&adapter->stats_lock);
843 memset(ns, 0, sizeof(*ns));
847 ns->tx_bytes = (stats.tx_bcast_bytes + stats.tx_mcast_bytes +
848 stats.tx_ucast_bytes + stats.tx_offload_bytes);
849 ns->tx_packets = (stats.tx_bcast_frames + stats.tx_mcast_frames +
850 stats.tx_ucast_frames + stats.tx_offload_frames);
851 ns->rx_bytes = (stats.rx_bcast_bytes + stats.rx_mcast_bytes +
852 stats.rx_ucast_bytes);
853 ns->rx_packets = (stats.rx_bcast_frames + stats.rx_mcast_frames +
854 stats.rx_ucast_frames);
855 ns->multicast = stats.rx_mcast_frames;
856 ns->tx_errors = stats.tx_drop_frames;
857 ns->rx_errors = stats.rx_err_frames;
862 static inline int cxgb4vf_set_addr_hash(struct port_info *pi)
864 struct adapter *adapter = pi->adapter;
867 struct hash_mac_addr *entry;
869 /* Calculate the hash vector for the updated list and program it */
870 list_for_each_entry(entry, &adapter->mac_hlist, list) {
871 ucast |= is_unicast_ether_addr(entry->addr);
872 vec |= (1ULL << hash_mac_addr(entry->addr));
874 return t4vf_set_addr_hash(adapter, pi->viid, ucast, vec, false);
877 static int cxgb4vf_mac_sync(struct net_device *netdev, const u8 *mac_addr)
879 struct port_info *pi = netdev_priv(netdev);
880 struct adapter *adapter = pi->adapter;
885 bool ucast = is_unicast_ether_addr(mac_addr);
886 const u8 *maclist[1] = {mac_addr};
887 struct hash_mac_addr *new_entry;
889 ret = t4vf_alloc_mac_filt(adapter, pi->viid, free, 1, maclist,
890 NULL, ucast ? &uhash : &mhash, false);
893 /* if hash != 0, then add the addr to hash addr list
894 * so on the end we will calculate the hash for the
895 * list and program it
897 if (uhash || mhash) {
898 new_entry = kzalloc(sizeof(*new_entry), GFP_ATOMIC);
901 ether_addr_copy(new_entry->addr, mac_addr);
902 list_add_tail(&new_entry->list, &adapter->mac_hlist);
903 ret = cxgb4vf_set_addr_hash(pi);
906 return ret < 0 ? ret : 0;
909 static int cxgb4vf_mac_unsync(struct net_device *netdev, const u8 *mac_addr)
911 struct port_info *pi = netdev_priv(netdev);
912 struct adapter *adapter = pi->adapter;
914 const u8 *maclist[1] = {mac_addr};
915 struct hash_mac_addr *entry, *tmp;
917 /* If the MAC address to be removed is in the hash addr
918 * list, delete it from the list and update hash vector
920 list_for_each_entry_safe(entry, tmp, &adapter->mac_hlist, list) {
921 if (ether_addr_equal(entry->addr, mac_addr)) {
922 list_del(&entry->list);
924 return cxgb4vf_set_addr_hash(pi);
928 ret = t4vf_free_mac_filt(adapter, pi->viid, 1, maclist, false);
929 return ret < 0 ? -EINVAL : 0;
933 * Set RX properties of a port, such as promiscruity, address filters, and MTU.
934 * If @mtu is -1 it is left unchanged.
936 static int set_rxmode(struct net_device *dev, int mtu, bool sleep_ok)
938 struct port_info *pi = netdev_priv(dev);
940 __dev_uc_sync(dev, cxgb4vf_mac_sync, cxgb4vf_mac_unsync);
941 __dev_mc_sync(dev, cxgb4vf_mac_sync, cxgb4vf_mac_unsync);
942 return t4vf_set_rxmode(pi->adapter, pi->viid, -1,
943 (dev->flags & IFF_PROMISC) != 0,
944 (dev->flags & IFF_ALLMULTI) != 0,
949 * Set the current receive modes on the device.
951 static void cxgb4vf_set_rxmode(struct net_device *dev)
953 /* unfortunately we can't return errors to the stack */
954 set_rxmode(dev, -1, false);
958 * Find the entry in the interrupt holdoff timer value array which comes
959 * closest to the specified interrupt holdoff value.
961 static int closest_timer(const struct sge *s, int us)
963 int i, timer_idx = 0, min_delta = INT_MAX;
965 for (i = 0; i < ARRAY_SIZE(s->timer_val); i++) {
966 int delta = us - s->timer_val[i];
969 if (delta < min_delta) {
977 static int closest_thres(const struct sge *s, int thres)
979 int i, delta, pktcnt_idx = 0, min_delta = INT_MAX;
981 for (i = 0; i < ARRAY_SIZE(s->counter_val); i++) {
982 delta = thres - s->counter_val[i];
985 if (delta < min_delta) {
994 * Return a queue's interrupt hold-off time in us. 0 means no timer.
996 static unsigned int qtimer_val(const struct adapter *adapter,
997 const struct sge_rspq *rspq)
999 unsigned int timer_idx = QINTR_TIMER_IDX_G(rspq->intr_params);
1001 return timer_idx < SGE_NTIMERS
1002 ? adapter->sge.timer_val[timer_idx]
1007 * set_rxq_intr_params - set a queue's interrupt holdoff parameters
1008 * @adapter: the adapter
1009 * @rspq: the RX response queue
1010 * @us: the hold-off time in us, or 0 to disable timer
1011 * @cnt: the hold-off packet count, or 0 to disable counter
1013 * Sets an RX response queue's interrupt hold-off time and packet count.
1014 * At least one of the two needs to be enabled for the queue to generate
1017 static int set_rxq_intr_params(struct adapter *adapter, struct sge_rspq *rspq,
1018 unsigned int us, unsigned int cnt)
1020 unsigned int timer_idx;
1023 * If both the interrupt holdoff timer and count are specified as
1024 * zero, default to a holdoff count of 1 ...
1026 if ((us | cnt) == 0)
1030 * If an interrupt holdoff count has been specified, then find the
1031 * closest configured holdoff count and use that. If the response
1032 * queue has already been created, then update its queue context
1039 pktcnt_idx = closest_thres(&adapter->sge, cnt);
1040 if (rspq->desc && rspq->pktcnt_idx != pktcnt_idx) {
1041 v = FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DMAQ) |
1042 FW_PARAMS_PARAM_X_V(
1043 FW_PARAMS_PARAM_DMAQ_IQ_INTCNTTHRESH) |
1044 FW_PARAMS_PARAM_YZ_V(rspq->cntxt_id);
1045 err = t4vf_set_params(adapter, 1, &v, &pktcnt_idx);
1049 rspq->pktcnt_idx = pktcnt_idx;
1053 * Compute the closest holdoff timer index from the supplied holdoff
1056 timer_idx = (us == 0
1057 ? SGE_TIMER_RSTRT_CNTR
1058 : closest_timer(&adapter->sge, us));
1061 * Update the response queue's interrupt coalescing parameters and
1064 rspq->intr_params = (QINTR_TIMER_IDX_V(timer_idx) |
1065 QINTR_CNT_EN_V(cnt > 0));
1070 * Return a version number to identify the type of adapter. The scheme is:
1071 * - bits 0..9: chip version
1072 * - bits 10..15: chip revision
1074 static inline unsigned int mk_adap_vers(const struct adapter *adapter)
1077 * Chip version 4, revision 0x3f (cxgb4vf).
1079 return CHELSIO_CHIP_VERSION(adapter->params.chip) | (0x3f << 10);
1083 * Execute the specified ioctl command.
1085 static int cxgb4vf_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1091 * The VF Driver doesn't have access to any of the other
1092 * common Ethernet device ioctl()'s (like reading/writing
1093 * PHY registers, etc.
1104 * Change the device's MTU.
1106 static int cxgb4vf_change_mtu(struct net_device *dev, int new_mtu)
1109 struct port_info *pi = netdev_priv(dev);
1111 /* accommodate SACK */
1115 ret = t4vf_set_rxmode(pi->adapter, pi->viid, new_mtu,
1116 -1, -1, -1, -1, true);
1122 static netdev_features_t cxgb4vf_fix_features(struct net_device *dev,
1123 netdev_features_t features)
1126 * Since there is no support for separate rx/tx vlan accel
1127 * enable/disable make sure tx flag is always in same state as rx.
1129 if (features & NETIF_F_HW_VLAN_CTAG_RX)
1130 features |= NETIF_F_HW_VLAN_CTAG_TX;
1132 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
1137 static int cxgb4vf_set_features(struct net_device *dev,
1138 netdev_features_t features)
1140 struct port_info *pi = netdev_priv(dev);
1141 netdev_features_t changed = dev->features ^ features;
1143 if (changed & NETIF_F_HW_VLAN_CTAG_RX)
1144 t4vf_set_rxmode(pi->adapter, pi->viid, -1, -1, -1, -1,
1145 features & NETIF_F_HW_VLAN_CTAG_TX, 0);
1151 * Change the devices MAC address.
1153 static int cxgb4vf_set_mac_addr(struct net_device *dev, void *_addr)
1156 struct sockaddr *addr = _addr;
1157 struct port_info *pi = netdev_priv(dev);
1159 if (!is_valid_ether_addr(addr->sa_data))
1160 return -EADDRNOTAVAIL;
1162 ret = t4vf_change_mac(pi->adapter, pi->viid, pi->xact_addr_filt,
1163 addr->sa_data, true);
1167 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1168 pi->xact_addr_filt = ret;
1172 #ifdef CONFIG_NET_POLL_CONTROLLER
1174 * Poll all of our receive queues. This is called outside of normal interrupt
1177 static void cxgb4vf_poll_controller(struct net_device *dev)
1179 struct port_info *pi = netdev_priv(dev);
1180 struct adapter *adapter = pi->adapter;
1182 if (adapter->flags & USING_MSIX) {
1183 struct sge_eth_rxq *rxq;
1186 rxq = &adapter->sge.ethrxq[pi->first_qset];
1187 for (nqsets = pi->nqsets; nqsets; nqsets--) {
1188 t4vf_sge_intr_msix(0, &rxq->rspq);
1192 t4vf_intr_handler(adapter)(0, adapter);
1197 * Ethtool operations.
1198 * ===================
1200 * Note that we don't support any ethtool operations which change the physical
1201 * state of the port to which we're linked.
1205 * from_fw_port_mod_type - translate Firmware Port/Module type to Ethtool
1206 * @port_type: Firmware Port Type
1207 * @mod_type: Firmware Module Type
1209 * Translate Firmware Port/Module type to Ethtool Port Type.
1211 static int from_fw_port_mod_type(enum fw_port_type port_type,
1212 enum fw_port_module_type mod_type)
1214 if (port_type == FW_PORT_TYPE_BT_SGMII ||
1215 port_type == FW_PORT_TYPE_BT_XFI ||
1216 port_type == FW_PORT_TYPE_BT_XAUI) {
1218 } else if (port_type == FW_PORT_TYPE_FIBER_XFI ||
1219 port_type == FW_PORT_TYPE_FIBER_XAUI) {
1221 } else if (port_type == FW_PORT_TYPE_SFP ||
1222 port_type == FW_PORT_TYPE_QSFP_10G ||
1223 port_type == FW_PORT_TYPE_QSA ||
1224 port_type == FW_PORT_TYPE_QSFP) {
1225 if (mod_type == FW_PORT_MOD_TYPE_LR ||
1226 mod_type == FW_PORT_MOD_TYPE_SR ||
1227 mod_type == FW_PORT_MOD_TYPE_ER ||
1228 mod_type == FW_PORT_MOD_TYPE_LRM)
1230 else if (mod_type == FW_PORT_MOD_TYPE_TWINAX_PASSIVE ||
1231 mod_type == FW_PORT_MOD_TYPE_TWINAX_ACTIVE)
1241 * fw_caps_to_lmm - translate Firmware to ethtool Link Mode Mask
1242 * @port_type: Firmware Port Type
1243 * @fw_caps: Firmware Port Capabilities
1244 * @link_mode_mask: ethtool Link Mode Mask
1246 * Translate a Firmware Port Capabilities specification to an ethtool
1249 static void fw_caps_to_lmm(enum fw_port_type port_type,
1250 unsigned int fw_caps,
1251 unsigned long *link_mode_mask)
1253 #define SET_LMM(__lmm_name) __set_bit(ETHTOOL_LINK_MODE_ ## __lmm_name\
1254 ## _BIT, link_mode_mask)
1256 #define FW_CAPS_TO_LMM(__fw_name, __lmm_name) \
1258 if (fw_caps & FW_PORT_CAP_ ## __fw_name) \
1259 SET_LMM(__lmm_name); \
1262 switch (port_type) {
1263 case FW_PORT_TYPE_BT_SGMII:
1264 case FW_PORT_TYPE_BT_XFI:
1265 case FW_PORT_TYPE_BT_XAUI:
1267 FW_CAPS_TO_LMM(SPEED_100M, 100baseT_Full);
1268 FW_CAPS_TO_LMM(SPEED_1G, 1000baseT_Full);
1269 FW_CAPS_TO_LMM(SPEED_10G, 10000baseT_Full);
1272 case FW_PORT_TYPE_KX4:
1273 case FW_PORT_TYPE_KX:
1275 FW_CAPS_TO_LMM(SPEED_1G, 1000baseKX_Full);
1276 FW_CAPS_TO_LMM(SPEED_10G, 10000baseKX4_Full);
1279 case FW_PORT_TYPE_KR:
1281 SET_LMM(10000baseKR_Full);
1284 case FW_PORT_TYPE_BP_AP:
1286 SET_LMM(10000baseR_FEC);
1287 SET_LMM(10000baseKR_Full);
1288 SET_LMM(1000baseKX_Full);
1291 case FW_PORT_TYPE_BP4_AP:
1293 SET_LMM(10000baseR_FEC);
1294 SET_LMM(10000baseKR_Full);
1295 SET_LMM(1000baseKX_Full);
1296 SET_LMM(10000baseKX4_Full);
1299 case FW_PORT_TYPE_FIBER_XFI:
1300 case FW_PORT_TYPE_FIBER_XAUI:
1301 case FW_PORT_TYPE_SFP:
1302 case FW_PORT_TYPE_QSFP_10G:
1303 case FW_PORT_TYPE_QSA:
1305 FW_CAPS_TO_LMM(SPEED_1G, 1000baseT_Full);
1306 FW_CAPS_TO_LMM(SPEED_10G, 10000baseT_Full);
1309 case FW_PORT_TYPE_BP40_BA:
1310 case FW_PORT_TYPE_QSFP:
1312 SET_LMM(40000baseSR4_Full);
1315 case FW_PORT_TYPE_CR_QSFP:
1316 case FW_PORT_TYPE_SFP28:
1318 SET_LMM(25000baseCR_Full);
1321 case FW_PORT_TYPE_KR4_100G:
1322 case FW_PORT_TYPE_CR4_QSFP:
1324 SET_LMM(100000baseCR4_Full);
1331 FW_CAPS_TO_LMM(ANEG, Autoneg);
1332 FW_CAPS_TO_LMM(802_3_PAUSE, Pause);
1333 FW_CAPS_TO_LMM(802_3_ASM_DIR, Asym_Pause);
1335 #undef FW_CAPS_TO_LMM
1339 static int cxgb4vf_get_link_ksettings(struct net_device *dev,
1340 struct ethtool_link_ksettings
1343 const struct port_info *pi = netdev_priv(dev);
1344 struct ethtool_link_settings *base = &link_ksettings->base;
1346 ethtool_link_ksettings_zero_link_mode(link_ksettings, supported);
1347 ethtool_link_ksettings_zero_link_mode(link_ksettings, advertising);
1348 ethtool_link_ksettings_zero_link_mode(link_ksettings, lp_advertising);
1350 base->port = from_fw_port_mod_type(pi->port_type, pi->mod_type);
1352 if (pi->mdio_addr >= 0) {
1353 base->phy_address = pi->mdio_addr;
1354 base->mdio_support = (pi->port_type == FW_PORT_TYPE_BT_SGMII
1355 ? ETH_MDIO_SUPPORTS_C22
1356 : ETH_MDIO_SUPPORTS_C45);
1358 base->phy_address = 255;
1359 base->mdio_support = 0;
1362 fw_caps_to_lmm(pi->port_type, pi->link_cfg.supported,
1363 link_ksettings->link_modes.supported);
1364 fw_caps_to_lmm(pi->port_type, pi->link_cfg.advertising,
1365 link_ksettings->link_modes.advertising);
1366 fw_caps_to_lmm(pi->port_type, pi->link_cfg.lp_advertising,
1367 link_ksettings->link_modes.lp_advertising);
1369 if (netif_carrier_ok(dev)) {
1370 base->speed = pi->link_cfg.speed;
1371 base->duplex = DUPLEX_FULL;
1373 base->speed = SPEED_UNKNOWN;
1374 base->duplex = DUPLEX_UNKNOWN;
1377 base->autoneg = pi->link_cfg.autoneg;
1378 if (pi->link_cfg.supported & FW_PORT_CAP_ANEG)
1379 ethtool_link_ksettings_add_link_mode(link_ksettings,
1380 supported, Autoneg);
1381 if (pi->link_cfg.autoneg)
1382 ethtool_link_ksettings_add_link_mode(link_ksettings,
1383 advertising, Autoneg);
1389 * Return our driver information.
1391 static void cxgb4vf_get_drvinfo(struct net_device *dev,
1392 struct ethtool_drvinfo *drvinfo)
1394 struct adapter *adapter = netdev2adap(dev);
1396 strlcpy(drvinfo->driver, KBUILD_MODNAME, sizeof(drvinfo->driver));
1397 strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
1398 strlcpy(drvinfo->bus_info, pci_name(to_pci_dev(dev->dev.parent)),
1399 sizeof(drvinfo->bus_info));
1400 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
1401 "%u.%u.%u.%u, TP %u.%u.%u.%u",
1402 FW_HDR_FW_VER_MAJOR_G(adapter->params.dev.fwrev),
1403 FW_HDR_FW_VER_MINOR_G(adapter->params.dev.fwrev),
1404 FW_HDR_FW_VER_MICRO_G(adapter->params.dev.fwrev),
1405 FW_HDR_FW_VER_BUILD_G(adapter->params.dev.fwrev),
1406 FW_HDR_FW_VER_MAJOR_G(adapter->params.dev.tprev),
1407 FW_HDR_FW_VER_MINOR_G(adapter->params.dev.tprev),
1408 FW_HDR_FW_VER_MICRO_G(adapter->params.dev.tprev),
1409 FW_HDR_FW_VER_BUILD_G(adapter->params.dev.tprev));
1413 * Return current adapter message level.
1415 static u32 cxgb4vf_get_msglevel(struct net_device *dev)
1417 return netdev2adap(dev)->msg_enable;
1421 * Set current adapter message level.
1423 static void cxgb4vf_set_msglevel(struct net_device *dev, u32 msglevel)
1425 netdev2adap(dev)->msg_enable = msglevel;
1429 * Return the device's current Queue Set ring size parameters along with the
1430 * allowed maximum values. Since ethtool doesn't understand the concept of
1431 * multi-queue devices, we just return the current values associated with the
1434 static void cxgb4vf_get_ringparam(struct net_device *dev,
1435 struct ethtool_ringparam *rp)
1437 const struct port_info *pi = netdev_priv(dev);
1438 const struct sge *s = &pi->adapter->sge;
1440 rp->rx_max_pending = MAX_RX_BUFFERS;
1441 rp->rx_mini_max_pending = MAX_RSPQ_ENTRIES;
1442 rp->rx_jumbo_max_pending = 0;
1443 rp->tx_max_pending = MAX_TXQ_ENTRIES;
1445 rp->rx_pending = s->ethrxq[pi->first_qset].fl.size - MIN_FL_RESID;
1446 rp->rx_mini_pending = s->ethrxq[pi->first_qset].rspq.size;
1447 rp->rx_jumbo_pending = 0;
1448 rp->tx_pending = s->ethtxq[pi->first_qset].q.size;
1452 * Set the Queue Set ring size parameters for the device. Again, since
1453 * ethtool doesn't allow for the concept of multiple queues per device, we'll
1454 * apply these new values across all of the Queue Sets associated with the
1455 * device -- after vetting them of course!
1457 static int cxgb4vf_set_ringparam(struct net_device *dev,
1458 struct ethtool_ringparam *rp)
1460 const struct port_info *pi = netdev_priv(dev);
1461 struct adapter *adapter = pi->adapter;
1462 struct sge *s = &adapter->sge;
1465 if (rp->rx_pending > MAX_RX_BUFFERS ||
1466 rp->rx_jumbo_pending ||
1467 rp->tx_pending > MAX_TXQ_ENTRIES ||
1468 rp->rx_mini_pending > MAX_RSPQ_ENTRIES ||
1469 rp->rx_mini_pending < MIN_RSPQ_ENTRIES ||
1470 rp->rx_pending < MIN_FL_ENTRIES ||
1471 rp->tx_pending < MIN_TXQ_ENTRIES)
1474 if (adapter->flags & FULL_INIT_DONE)
1477 for (qs = pi->first_qset; qs < pi->first_qset + pi->nqsets; qs++) {
1478 s->ethrxq[qs].fl.size = rp->rx_pending + MIN_FL_RESID;
1479 s->ethrxq[qs].rspq.size = rp->rx_mini_pending;
1480 s->ethtxq[qs].q.size = rp->tx_pending;
1486 * Return the interrupt holdoff timer and count for the first Queue Set on the
1487 * device. Our extension ioctl() (the cxgbtool interface) allows the
1488 * interrupt holdoff timer to be read on all of the device's Queue Sets.
1490 static int cxgb4vf_get_coalesce(struct net_device *dev,
1491 struct ethtool_coalesce *coalesce)
1493 const struct port_info *pi = netdev_priv(dev);
1494 const struct adapter *adapter = pi->adapter;
1495 const struct sge_rspq *rspq = &adapter->sge.ethrxq[pi->first_qset].rspq;
1497 coalesce->rx_coalesce_usecs = qtimer_val(adapter, rspq);
1498 coalesce->rx_max_coalesced_frames =
1499 ((rspq->intr_params & QINTR_CNT_EN_F)
1500 ? adapter->sge.counter_val[rspq->pktcnt_idx]
1506 * Set the RX interrupt holdoff timer and count for the first Queue Set on the
1507 * interface. Our extension ioctl() (the cxgbtool interface) allows us to set
1508 * the interrupt holdoff timer on any of the device's Queue Sets.
1510 static int cxgb4vf_set_coalesce(struct net_device *dev,
1511 struct ethtool_coalesce *coalesce)
1513 const struct port_info *pi = netdev_priv(dev);
1514 struct adapter *adapter = pi->adapter;
1516 return set_rxq_intr_params(adapter,
1517 &adapter->sge.ethrxq[pi->first_qset].rspq,
1518 coalesce->rx_coalesce_usecs,
1519 coalesce->rx_max_coalesced_frames);
1523 * Report current port link pause parameter settings.
1525 static void cxgb4vf_get_pauseparam(struct net_device *dev,
1526 struct ethtool_pauseparam *pauseparam)
1528 struct port_info *pi = netdev_priv(dev);
1530 pauseparam->autoneg = (pi->link_cfg.requested_fc & PAUSE_AUTONEG) != 0;
1531 pauseparam->rx_pause = (pi->link_cfg.fc & PAUSE_RX) != 0;
1532 pauseparam->tx_pause = (pi->link_cfg.fc & PAUSE_TX) != 0;
1536 * Identify the port by blinking the port's LED.
1538 static int cxgb4vf_phys_id(struct net_device *dev,
1539 enum ethtool_phys_id_state state)
1542 struct port_info *pi = netdev_priv(dev);
1544 if (state == ETHTOOL_ID_ACTIVE)
1546 else if (state == ETHTOOL_ID_INACTIVE)
1551 return t4vf_identify_port(pi->adapter, pi->viid, val);
1555 * Port stats maintained per queue of the port.
1557 struct queue_port_stats {
1568 * Strings for the ETH_SS_STATS statistics set ("ethtool -S"). Note that
1569 * these need to match the order of statistics returned by
1570 * t4vf_get_port_stats().
1572 static const char stats_strings[][ETH_GSTRING_LEN] = {
1574 * These must match the layout of the t4vf_port_stats structure.
1576 "TxBroadcastBytes ",
1577 "TxBroadcastFrames ",
1578 "TxMulticastBytes ",
1579 "TxMulticastFrames ",
1585 "RxBroadcastBytes ",
1586 "RxBroadcastFrames ",
1587 "RxMulticastBytes ",
1588 "RxMulticastFrames ",
1594 * These are accumulated per-queue statistics and must match the
1595 * order of the fields in the queue_port_stats structure.
1607 * Return the number of statistics in the specified statistics set.
1609 static int cxgb4vf_get_sset_count(struct net_device *dev, int sset)
1613 return ARRAY_SIZE(stats_strings);
1621 * Return the strings for the specified statistics set.
1623 static void cxgb4vf_get_strings(struct net_device *dev,
1629 memcpy(data, stats_strings, sizeof(stats_strings));
1635 * Small utility routine to accumulate queue statistics across the queues of
1638 static void collect_sge_port_stats(const struct adapter *adapter,
1639 const struct port_info *pi,
1640 struct queue_port_stats *stats)
1642 const struct sge_eth_txq *txq = &adapter->sge.ethtxq[pi->first_qset];
1643 const struct sge_eth_rxq *rxq = &adapter->sge.ethrxq[pi->first_qset];
1646 memset(stats, 0, sizeof(*stats));
1647 for (qs = 0; qs < pi->nqsets; qs++, rxq++, txq++) {
1648 stats->tso += txq->tso;
1649 stats->tx_csum += txq->tx_cso;
1650 stats->rx_csum += rxq->stats.rx_cso;
1651 stats->vlan_ex += rxq->stats.vlan_ex;
1652 stats->vlan_ins += txq->vlan_ins;
1653 stats->lro_pkts += rxq->stats.lro_pkts;
1654 stats->lro_merged += rxq->stats.lro_merged;
1659 * Return the ETH_SS_STATS statistics set.
1661 static void cxgb4vf_get_ethtool_stats(struct net_device *dev,
1662 struct ethtool_stats *stats,
1665 struct port_info *pi = netdev2pinfo(dev);
1666 struct adapter *adapter = pi->adapter;
1667 int err = t4vf_get_port_stats(adapter, pi->pidx,
1668 (struct t4vf_port_stats *)data);
1670 memset(data, 0, sizeof(struct t4vf_port_stats));
1672 data += sizeof(struct t4vf_port_stats) / sizeof(u64);
1673 collect_sge_port_stats(adapter, pi, (struct queue_port_stats *)data);
1677 * Return the size of our register map.
1679 static int cxgb4vf_get_regs_len(struct net_device *dev)
1681 return T4VF_REGMAP_SIZE;
1685 * Dump a block of registers, start to end inclusive, into a buffer.
1687 static void reg_block_dump(struct adapter *adapter, void *regbuf,
1688 unsigned int start, unsigned int end)
1690 u32 *bp = regbuf + start - T4VF_REGMAP_START;
1692 for ( ; start <= end; start += sizeof(u32)) {
1694 * Avoid reading the Mailbox Control register since that
1695 * can trigger a Mailbox Ownership Arbitration cycle and
1696 * interfere with communication with the firmware.
1698 if (start == T4VF_CIM_BASE_ADDR + CIM_VF_EXT_MAILBOX_CTRL)
1701 *bp++ = t4_read_reg(adapter, start);
1706 * Copy our entire register map into the provided buffer.
1708 static void cxgb4vf_get_regs(struct net_device *dev,
1709 struct ethtool_regs *regs,
1712 struct adapter *adapter = netdev2adap(dev);
1714 regs->version = mk_adap_vers(adapter);
1717 * Fill in register buffer with our register map.
1719 memset(regbuf, 0, T4VF_REGMAP_SIZE);
1721 reg_block_dump(adapter, regbuf,
1722 T4VF_SGE_BASE_ADDR + T4VF_MOD_MAP_SGE_FIRST,
1723 T4VF_SGE_BASE_ADDR + T4VF_MOD_MAP_SGE_LAST);
1724 reg_block_dump(adapter, regbuf,
1725 T4VF_MPS_BASE_ADDR + T4VF_MOD_MAP_MPS_FIRST,
1726 T4VF_MPS_BASE_ADDR + T4VF_MOD_MAP_MPS_LAST);
1728 /* T5 adds new registers in the PL Register map.
1730 reg_block_dump(adapter, regbuf,
1731 T4VF_PL_BASE_ADDR + T4VF_MOD_MAP_PL_FIRST,
1732 T4VF_PL_BASE_ADDR + (is_t4(adapter->params.chip)
1733 ? PL_VF_WHOAMI_A : PL_VF_REVISION_A));
1734 reg_block_dump(adapter, regbuf,
1735 T4VF_CIM_BASE_ADDR + T4VF_MOD_MAP_CIM_FIRST,
1736 T4VF_CIM_BASE_ADDR + T4VF_MOD_MAP_CIM_LAST);
1738 reg_block_dump(adapter, regbuf,
1739 T4VF_MBDATA_BASE_ADDR + T4VF_MBDATA_FIRST,
1740 T4VF_MBDATA_BASE_ADDR + T4VF_MBDATA_LAST);
1744 * Report current Wake On LAN settings.
1746 static void cxgb4vf_get_wol(struct net_device *dev,
1747 struct ethtool_wolinfo *wol)
1751 memset(&wol->sopass, 0, sizeof(wol->sopass));
1755 * TCP Segmentation Offload flags which we support.
1757 #define TSO_FLAGS (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)
1759 static const struct ethtool_ops cxgb4vf_ethtool_ops = {
1760 .get_link_ksettings = cxgb4vf_get_link_ksettings,
1761 .get_drvinfo = cxgb4vf_get_drvinfo,
1762 .get_msglevel = cxgb4vf_get_msglevel,
1763 .set_msglevel = cxgb4vf_set_msglevel,
1764 .get_ringparam = cxgb4vf_get_ringparam,
1765 .set_ringparam = cxgb4vf_set_ringparam,
1766 .get_coalesce = cxgb4vf_get_coalesce,
1767 .set_coalesce = cxgb4vf_set_coalesce,
1768 .get_pauseparam = cxgb4vf_get_pauseparam,
1769 .get_link = ethtool_op_get_link,
1770 .get_strings = cxgb4vf_get_strings,
1771 .set_phys_id = cxgb4vf_phys_id,
1772 .get_sset_count = cxgb4vf_get_sset_count,
1773 .get_ethtool_stats = cxgb4vf_get_ethtool_stats,
1774 .get_regs_len = cxgb4vf_get_regs_len,
1775 .get_regs = cxgb4vf_get_regs,
1776 .get_wol = cxgb4vf_get_wol,
1780 * /sys/kernel/debug/cxgb4vf support code and data.
1781 * ================================================
1785 * Show Firmware Mailbox Command/Reply Log
1787 * Note that we don't do any locking when dumping the Firmware Mailbox Log so
1788 * it's possible that we can catch things during a log update and therefore
1789 * see partially corrupted log entries. But i9t's probably Good Enough(tm).
1790 * If we ever decide that we want to make sure that we're dumping a coherent
1791 * log, we'd need to perform locking in the mailbox logging and in
1792 * mboxlog_open() where we'd need to grab the entire mailbox log in one go
1793 * like we do for the Firmware Device Log. But as stated above, meh ...
1795 static int mboxlog_show(struct seq_file *seq, void *v)
1797 struct adapter *adapter = seq->private;
1798 struct mbox_cmd_log *log = adapter->mbox_log;
1799 struct mbox_cmd *entry;
1802 if (v == SEQ_START_TOKEN) {
1804 "%10s %15s %5s %5s %s\n",
1805 "Seq#", "Tstamp", "Atime", "Etime",
1810 entry_idx = log->cursor + ((uintptr_t)v - 2);
1811 if (entry_idx >= log->size)
1812 entry_idx -= log->size;
1813 entry = mbox_cmd_log_entry(log, entry_idx);
1815 /* skip over unused entries */
1816 if (entry->timestamp == 0)
1819 seq_printf(seq, "%10u %15llu %5d %5d",
1820 entry->seqno, entry->timestamp,
1821 entry->access, entry->execute);
1822 for (i = 0; i < MBOX_LEN / 8; i++) {
1823 u64 flit = entry->cmd[i];
1824 u32 hi = (u32)(flit >> 32);
1827 seq_printf(seq, " %08x %08x", hi, lo);
1829 seq_puts(seq, "\n");
1833 static inline void *mboxlog_get_idx(struct seq_file *seq, loff_t pos)
1835 struct adapter *adapter = seq->private;
1836 struct mbox_cmd_log *log = adapter->mbox_log;
1838 return ((pos <= log->size) ? (void *)(uintptr_t)(pos + 1) : NULL);
1841 static void *mboxlog_start(struct seq_file *seq, loff_t *pos)
1843 return *pos ? mboxlog_get_idx(seq, *pos) : SEQ_START_TOKEN;
1846 static void *mboxlog_next(struct seq_file *seq, void *v, loff_t *pos)
1849 return mboxlog_get_idx(seq, *pos);
1852 static void mboxlog_stop(struct seq_file *seq, void *v)
1856 static const struct seq_operations mboxlog_seq_ops = {
1857 .start = mboxlog_start,
1858 .next = mboxlog_next,
1859 .stop = mboxlog_stop,
1860 .show = mboxlog_show
1863 static int mboxlog_open(struct inode *inode, struct file *file)
1865 int res = seq_open(file, &mboxlog_seq_ops);
1868 struct seq_file *seq = file->private_data;
1870 seq->private = inode->i_private;
1875 static const struct file_operations mboxlog_fops = {
1876 .owner = THIS_MODULE,
1877 .open = mboxlog_open,
1879 .llseek = seq_lseek,
1880 .release = seq_release,
1884 * Show SGE Queue Set information. We display QPL Queues Sets per line.
1888 static int sge_qinfo_show(struct seq_file *seq, void *v)
1890 struct adapter *adapter = seq->private;
1891 int eth_entries = DIV_ROUND_UP(adapter->sge.ethqsets, QPL);
1892 int qs, r = (uintptr_t)v - 1;
1895 seq_putc(seq, '\n');
1897 #define S3(fmt_spec, s, v) \
1899 seq_printf(seq, "%-12s", s); \
1900 for (qs = 0; qs < n; ++qs) \
1901 seq_printf(seq, " %16" fmt_spec, v); \
1902 seq_putc(seq, '\n'); \
1904 #define S(s, v) S3("s", s, v)
1905 #define T(s, v) S3("u", s, txq[qs].v)
1906 #define R(s, v) S3("u", s, rxq[qs].v)
1908 if (r < eth_entries) {
1909 const struct sge_eth_rxq *rxq = &adapter->sge.ethrxq[r * QPL];
1910 const struct sge_eth_txq *txq = &adapter->sge.ethtxq[r * QPL];
1911 int n = min(QPL, adapter->sge.ethqsets - QPL * r);
1913 S("QType:", "Ethernet");
1915 (rxq[qs].rspq.netdev
1916 ? rxq[qs].rspq.netdev->name
1919 (rxq[qs].rspq.netdev
1920 ? ((struct port_info *)
1921 netdev_priv(rxq[qs].rspq.netdev))->port_id
1923 T("TxQ ID:", q.abs_id);
1924 T("TxQ size:", q.size);
1925 T("TxQ inuse:", q.in_use);
1926 T("TxQ PIdx:", q.pidx);
1927 T("TxQ CIdx:", q.cidx);
1928 R("RspQ ID:", rspq.abs_id);
1929 R("RspQ size:", rspq.size);
1930 R("RspQE size:", rspq.iqe_len);
1931 S3("u", "Intr delay:", qtimer_val(adapter, &rxq[qs].rspq));
1932 S3("u", "Intr pktcnt:",
1933 adapter->sge.counter_val[rxq[qs].rspq.pktcnt_idx]);
1934 R("RspQ CIdx:", rspq.cidx);
1935 R("RspQ Gen:", rspq.gen);
1936 R("FL ID:", fl.abs_id);
1937 R("FL size:", fl.size - MIN_FL_RESID);
1938 R("FL avail:", fl.avail);
1939 R("FL PIdx:", fl.pidx);
1940 R("FL CIdx:", fl.cidx);
1946 const struct sge_rspq *evtq = &adapter->sge.fw_evtq;
1948 seq_printf(seq, "%-12s %16s\n", "QType:", "FW event queue");
1949 seq_printf(seq, "%-12s %16u\n", "RspQ ID:", evtq->abs_id);
1950 seq_printf(seq, "%-12s %16u\n", "Intr delay:",
1951 qtimer_val(adapter, evtq));
1952 seq_printf(seq, "%-12s %16u\n", "Intr pktcnt:",
1953 adapter->sge.counter_val[evtq->pktcnt_idx]);
1954 seq_printf(seq, "%-12s %16u\n", "RspQ Cidx:", evtq->cidx);
1955 seq_printf(seq, "%-12s %16u\n", "RspQ Gen:", evtq->gen);
1956 } else if (r == 1) {
1957 const struct sge_rspq *intrq = &adapter->sge.intrq;
1959 seq_printf(seq, "%-12s %16s\n", "QType:", "Interrupt Queue");
1960 seq_printf(seq, "%-12s %16u\n", "RspQ ID:", intrq->abs_id);
1961 seq_printf(seq, "%-12s %16u\n", "Intr delay:",
1962 qtimer_val(adapter, intrq));
1963 seq_printf(seq, "%-12s %16u\n", "Intr pktcnt:",
1964 adapter->sge.counter_val[intrq->pktcnt_idx]);
1965 seq_printf(seq, "%-12s %16u\n", "RspQ Cidx:", intrq->cidx);
1966 seq_printf(seq, "%-12s %16u\n", "RspQ Gen:", intrq->gen);
1978 * Return the number of "entries" in our "file". We group the multi-Queue
1979 * sections with QPL Queue Sets per "entry". The sections of the output are:
1981 * Ethernet RX/TX Queue Sets
1982 * Firmware Event Queue
1983 * Forwarded Interrupt Queue (if in MSI mode)
1985 static int sge_queue_entries(const struct adapter *adapter)
1987 return DIV_ROUND_UP(adapter->sge.ethqsets, QPL) + 1 +
1988 ((adapter->flags & USING_MSI) != 0);
1991 static void *sge_queue_start(struct seq_file *seq, loff_t *pos)
1993 int entries = sge_queue_entries(seq->private);
1995 return *pos < entries ? (void *)((uintptr_t)*pos + 1) : NULL;
1998 static void sge_queue_stop(struct seq_file *seq, void *v)
2002 static void *sge_queue_next(struct seq_file *seq, void *v, loff_t *pos)
2004 int entries = sge_queue_entries(seq->private);
2007 return *pos < entries ? (void *)((uintptr_t)*pos + 1) : NULL;
2010 static const struct seq_operations sge_qinfo_seq_ops = {
2011 .start = sge_queue_start,
2012 .next = sge_queue_next,
2013 .stop = sge_queue_stop,
2014 .show = sge_qinfo_show
2017 static int sge_qinfo_open(struct inode *inode, struct file *file)
2019 int res = seq_open(file, &sge_qinfo_seq_ops);
2022 struct seq_file *seq = file->private_data;
2023 seq->private = inode->i_private;
2028 static const struct file_operations sge_qinfo_debugfs_fops = {
2029 .owner = THIS_MODULE,
2030 .open = sge_qinfo_open,
2032 .llseek = seq_lseek,
2033 .release = seq_release,
2037 * Show SGE Queue Set statistics. We display QPL Queues Sets per line.
2041 static int sge_qstats_show(struct seq_file *seq, void *v)
2043 struct adapter *adapter = seq->private;
2044 int eth_entries = DIV_ROUND_UP(adapter->sge.ethqsets, QPL);
2045 int qs, r = (uintptr_t)v - 1;
2048 seq_putc(seq, '\n');
2050 #define S3(fmt, s, v) \
2052 seq_printf(seq, "%-16s", s); \
2053 for (qs = 0; qs < n; ++qs) \
2054 seq_printf(seq, " %8" fmt, v); \
2055 seq_putc(seq, '\n'); \
2057 #define S(s, v) S3("s", s, v)
2059 #define T3(fmt, s, v) S3(fmt, s, txq[qs].v)
2060 #define T(s, v) T3("lu", s, v)
2062 #define R3(fmt, s, v) S3(fmt, s, rxq[qs].v)
2063 #define R(s, v) R3("lu", s, v)
2065 if (r < eth_entries) {
2066 const struct sge_eth_rxq *rxq = &adapter->sge.ethrxq[r * QPL];
2067 const struct sge_eth_txq *txq = &adapter->sge.ethtxq[r * QPL];
2068 int n = min(QPL, adapter->sge.ethqsets - QPL * r);
2070 S("QType:", "Ethernet");
2072 (rxq[qs].rspq.netdev
2073 ? rxq[qs].rspq.netdev->name
2075 R3("u", "RspQNullInts:", rspq.unhandled_irqs);
2076 R("RxPackets:", stats.pkts);
2077 R("RxCSO:", stats.rx_cso);
2078 R("VLANxtract:", stats.vlan_ex);
2079 R("LROmerged:", stats.lro_merged);
2080 R("LROpackets:", stats.lro_pkts);
2081 R("RxDrops:", stats.rx_drops);
2083 T("TxCSO:", tx_cso);
2084 T("VLANins:", vlan_ins);
2085 T("TxQFull:", q.stops);
2086 T("TxQRestarts:", q.restarts);
2087 T("TxMapErr:", mapping_err);
2088 R("FLAllocErr:", fl.alloc_failed);
2089 R("FLLrgAlcErr:", fl.large_alloc_failed);
2090 R("FLStarving:", fl.starving);
2096 const struct sge_rspq *evtq = &adapter->sge.fw_evtq;
2098 seq_printf(seq, "%-8s %16s\n", "QType:", "FW event queue");
2099 seq_printf(seq, "%-16s %8u\n", "RspQNullInts:",
2100 evtq->unhandled_irqs);
2101 seq_printf(seq, "%-16s %8u\n", "RspQ CIdx:", evtq->cidx);
2102 seq_printf(seq, "%-16s %8u\n", "RspQ Gen:", evtq->gen);
2103 } else if (r == 1) {
2104 const struct sge_rspq *intrq = &adapter->sge.intrq;
2106 seq_printf(seq, "%-8s %16s\n", "QType:", "Interrupt Queue");
2107 seq_printf(seq, "%-16s %8u\n", "RspQNullInts:",
2108 intrq->unhandled_irqs);
2109 seq_printf(seq, "%-16s %8u\n", "RspQ CIdx:", intrq->cidx);
2110 seq_printf(seq, "%-16s %8u\n", "RspQ Gen:", intrq->gen);
2124 * Return the number of "entries" in our "file". We group the multi-Queue
2125 * sections with QPL Queue Sets per "entry". The sections of the output are:
2127 * Ethernet RX/TX Queue Sets
2128 * Firmware Event Queue
2129 * Forwarded Interrupt Queue (if in MSI mode)
2131 static int sge_qstats_entries(const struct adapter *adapter)
2133 return DIV_ROUND_UP(adapter->sge.ethqsets, QPL) + 1 +
2134 ((adapter->flags & USING_MSI) != 0);
2137 static void *sge_qstats_start(struct seq_file *seq, loff_t *pos)
2139 int entries = sge_qstats_entries(seq->private);
2141 return *pos < entries ? (void *)((uintptr_t)*pos + 1) : NULL;
2144 static void sge_qstats_stop(struct seq_file *seq, void *v)
2148 static void *sge_qstats_next(struct seq_file *seq, void *v, loff_t *pos)
2150 int entries = sge_qstats_entries(seq->private);
2153 return *pos < entries ? (void *)((uintptr_t)*pos + 1) : NULL;
2156 static const struct seq_operations sge_qstats_seq_ops = {
2157 .start = sge_qstats_start,
2158 .next = sge_qstats_next,
2159 .stop = sge_qstats_stop,
2160 .show = sge_qstats_show
2163 static int sge_qstats_open(struct inode *inode, struct file *file)
2165 int res = seq_open(file, &sge_qstats_seq_ops);
2168 struct seq_file *seq = file->private_data;
2169 seq->private = inode->i_private;
2174 static const struct file_operations sge_qstats_proc_fops = {
2175 .owner = THIS_MODULE,
2176 .open = sge_qstats_open,
2178 .llseek = seq_lseek,
2179 .release = seq_release,
2183 * Show PCI-E SR-IOV Virtual Function Resource Limits.
2185 static int resources_show(struct seq_file *seq, void *v)
2187 struct adapter *adapter = seq->private;
2188 struct vf_resources *vfres = &adapter->params.vfres;
2190 #define S(desc, fmt, var) \
2191 seq_printf(seq, "%-60s " fmt "\n", \
2192 desc " (" #var "):", vfres->var)
2194 S("Virtual Interfaces", "%d", nvi);
2195 S("Egress Queues", "%d", neq);
2196 S("Ethernet Control", "%d", nethctrl);
2197 S("Ingress Queues/w Free Lists/Interrupts", "%d", niqflint);
2198 S("Ingress Queues", "%d", niq);
2199 S("Traffic Class", "%d", tc);
2200 S("Port Access Rights Mask", "%#x", pmask);
2201 S("MAC Address Filters", "%d", nexactf);
2202 S("Firmware Command Read Capabilities", "%#x", r_caps);
2203 S("Firmware Command Write/Execute Capabilities", "%#x", wx_caps);
2210 static int resources_open(struct inode *inode, struct file *file)
2212 return single_open(file, resources_show, inode->i_private);
2215 static const struct file_operations resources_proc_fops = {
2216 .owner = THIS_MODULE,
2217 .open = resources_open,
2219 .llseek = seq_lseek,
2220 .release = single_release,
2224 * Show Virtual Interfaces.
2226 static int interfaces_show(struct seq_file *seq, void *v)
2228 if (v == SEQ_START_TOKEN) {
2229 seq_puts(seq, "Interface Port VIID\n");
2231 struct adapter *adapter = seq->private;
2232 int pidx = (uintptr_t)v - 2;
2233 struct net_device *dev = adapter->port[pidx];
2234 struct port_info *pi = netdev_priv(dev);
2236 seq_printf(seq, "%9s %4d %#5x\n",
2237 dev->name, pi->port_id, pi->viid);
2242 static inline void *interfaces_get_idx(struct adapter *adapter, loff_t pos)
2244 return pos <= adapter->params.nports
2245 ? (void *)(uintptr_t)(pos + 1)
2249 static void *interfaces_start(struct seq_file *seq, loff_t *pos)
2252 ? interfaces_get_idx(seq->private, *pos)
2256 static void *interfaces_next(struct seq_file *seq, void *v, loff_t *pos)
2259 return interfaces_get_idx(seq->private, *pos);
2262 static void interfaces_stop(struct seq_file *seq, void *v)
2266 static const struct seq_operations interfaces_seq_ops = {
2267 .start = interfaces_start,
2268 .next = interfaces_next,
2269 .stop = interfaces_stop,
2270 .show = interfaces_show
2273 static int interfaces_open(struct inode *inode, struct file *file)
2275 int res = seq_open(file, &interfaces_seq_ops);
2278 struct seq_file *seq = file->private_data;
2279 seq->private = inode->i_private;
2284 static const struct file_operations interfaces_proc_fops = {
2285 .owner = THIS_MODULE,
2286 .open = interfaces_open,
2288 .llseek = seq_lseek,
2289 .release = seq_release,
2293 * /sys/kernel/debugfs/cxgb4vf/ files list.
2295 struct cxgb4vf_debugfs_entry {
2296 const char *name; /* name of debugfs node */
2297 umode_t mode; /* file system mode */
2298 const struct file_operations *fops;
2301 static struct cxgb4vf_debugfs_entry debugfs_files[] = {
2302 { "mboxlog", S_IRUGO, &mboxlog_fops },
2303 { "sge_qinfo", S_IRUGO, &sge_qinfo_debugfs_fops },
2304 { "sge_qstats", S_IRUGO, &sge_qstats_proc_fops },
2305 { "resources", S_IRUGO, &resources_proc_fops },
2306 { "interfaces", S_IRUGO, &interfaces_proc_fops },
2310 * Module and device initialization and cleanup code.
2311 * ==================================================
2315 * Set up out /sys/kernel/debug/cxgb4vf sub-nodes. We assume that the
2316 * directory (debugfs_root) has already been set up.
2318 static int setup_debugfs(struct adapter *adapter)
2322 BUG_ON(IS_ERR_OR_NULL(adapter->debugfs_root));
2325 * Debugfs support is best effort.
2327 for (i = 0; i < ARRAY_SIZE(debugfs_files); i++)
2328 (void)debugfs_create_file(debugfs_files[i].name,
2329 debugfs_files[i].mode,
2330 adapter->debugfs_root,
2332 debugfs_files[i].fops);
2338 * Tear down the /sys/kernel/debug/cxgb4vf sub-nodes created above. We leave
2339 * it to our caller to tear down the directory (debugfs_root).
2341 static void cleanup_debugfs(struct adapter *adapter)
2343 BUG_ON(IS_ERR_OR_NULL(adapter->debugfs_root));
2346 * Unlike our sister routine cleanup_proc(), we don't need to remove
2347 * individual entries because a call will be made to
2348 * debugfs_remove_recursive(). We just need to clean up any ancillary
2354 /* Figure out how many Ports and Queue Sets we can support. This depends on
2355 * knowing our Virtual Function Resources and may be called a second time if
2356 * we fall back from MSI-X to MSI Interrupt Mode.
2358 static void size_nports_qsets(struct adapter *adapter)
2360 struct vf_resources *vfres = &adapter->params.vfres;
2361 unsigned int ethqsets, pmask_nports;
2363 /* The number of "ports" which we support is equal to the number of
2364 * Virtual Interfaces with which we've been provisioned.
2366 adapter->params.nports = vfres->nvi;
2367 if (adapter->params.nports > MAX_NPORTS) {
2368 dev_warn(adapter->pdev_dev, "only using %d of %d maximum"
2369 " allowed virtual interfaces\n", MAX_NPORTS,
2370 adapter->params.nports);
2371 adapter->params.nports = MAX_NPORTS;
2374 /* We may have been provisioned with more VIs than the number of
2375 * ports we're allowed to access (our Port Access Rights Mask).
2376 * This is obviously a configuration conflict but we don't want to
2377 * crash the kernel or anything silly just because of that.
2379 pmask_nports = hweight32(adapter->params.vfres.pmask);
2380 if (pmask_nports < adapter->params.nports) {
2381 dev_warn(adapter->pdev_dev, "only using %d of %d provissioned"
2382 " virtual interfaces; limited by Port Access Rights"
2383 " mask %#x\n", pmask_nports, adapter->params.nports,
2384 adapter->params.vfres.pmask);
2385 adapter->params.nports = pmask_nports;
2388 /* We need to reserve an Ingress Queue for the Asynchronous Firmware
2389 * Event Queue. And if we're using MSI Interrupts, we'll also need to
2390 * reserve an Ingress Queue for a Forwarded Interrupts.
2392 * The rest of the FL/Intr-capable ingress queues will be matched up
2393 * one-for-one with Ethernet/Control egress queues in order to form
2394 * "Queue Sets" which will be aportioned between the "ports". For
2395 * each Queue Set, we'll need the ability to allocate two Egress
2396 * Contexts -- one for the Ingress Queue Free List and one for the TX
2399 * Note that even if we're currently configured to use MSI-X
2400 * Interrupts (module variable msi == MSI_MSIX) we may get downgraded
2401 * to MSI Interrupts if we can't get enough MSI-X Interrupts. If that
2402 * happens we'll need to adjust things later.
2404 ethqsets = vfres->niqflint - 1 - (msi == MSI_MSI);
2405 if (vfres->nethctrl != ethqsets)
2406 ethqsets = min(vfres->nethctrl, ethqsets);
2407 if (vfres->neq < ethqsets*2)
2408 ethqsets = vfres->neq/2;
2409 if (ethqsets > MAX_ETH_QSETS)
2410 ethqsets = MAX_ETH_QSETS;
2411 adapter->sge.max_ethqsets = ethqsets;
2413 if (adapter->sge.max_ethqsets < adapter->params.nports) {
2414 dev_warn(adapter->pdev_dev, "only using %d of %d available"
2415 " virtual interfaces (too few Queue Sets)\n",
2416 adapter->sge.max_ethqsets, adapter->params.nports);
2417 adapter->params.nports = adapter->sge.max_ethqsets;
2422 * Perform early "adapter" initialization. This is where we discover what
2423 * adapter parameters we're going to be using and initialize basic adapter
2426 static int adap_init0(struct adapter *adapter)
2428 struct sge_params *sge_params = &adapter->params.sge;
2429 struct sge *s = &adapter->sge;
2434 * Some environments do not properly handle PCIE FLRs -- e.g. in Linux
2435 * 2.6.31 and later we can't call pci_reset_function() in order to
2436 * issue an FLR because of a self- deadlock on the device semaphore.
2437 * Meanwhile, the OS infrastructure doesn't issue FLRs in all the
2438 * cases where they're needed -- for instance, some versions of KVM
2439 * fail to reset "Assigned Devices" when the VM reboots. Therefore we
2440 * use the firmware based reset in order to reset any per function
2443 err = t4vf_fw_reset(adapter);
2445 dev_err(adapter->pdev_dev, "FW reset failed: err=%d\n", err);
2450 * Grab basic operational parameters. These will predominantly have
2451 * been set up by the Physical Function Driver or will be hard coded
2452 * into the adapter. We just have to live with them ... Note that
2453 * we _must_ get our VPD parameters before our SGE parameters because
2454 * we need to know the adapter's core clock from the VPD in order to
2455 * properly decode the SGE Timer Values.
2457 err = t4vf_get_dev_params(adapter);
2459 dev_err(adapter->pdev_dev, "unable to retrieve adapter"
2460 " device parameters: err=%d\n", err);
2463 err = t4vf_get_vpd_params(adapter);
2465 dev_err(adapter->pdev_dev, "unable to retrieve adapter"
2466 " VPD parameters: err=%d\n", err);
2469 err = t4vf_get_sge_params(adapter);
2471 dev_err(adapter->pdev_dev, "unable to retrieve adapter"
2472 " SGE parameters: err=%d\n", err);
2475 err = t4vf_get_rss_glb_config(adapter);
2477 dev_err(adapter->pdev_dev, "unable to retrieve adapter"
2478 " RSS parameters: err=%d\n", err);
2481 if (adapter->params.rss.mode !=
2482 FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL) {
2483 dev_err(adapter->pdev_dev, "unable to operate with global RSS"
2484 " mode %d\n", adapter->params.rss.mode);
2487 err = t4vf_sge_init(adapter);
2489 dev_err(adapter->pdev_dev, "unable to use adapter parameters:"
2494 /* If we're running on newer firmware, let it know that we're
2495 * prepared to deal with encapsulated CPL messages. Older
2496 * firmware won't understand this and we'll just get
2497 * unencapsulated messages ...
2499 param = FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_PFVF) |
2500 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_PFVF_CPLFW4MSG_ENCAP);
2502 (void) t4vf_set_params(adapter, 1, ¶m, &val);
2505 * Retrieve our RX interrupt holdoff timer values and counter
2506 * threshold values from the SGE parameters.
2508 s->timer_val[0] = core_ticks_to_us(adapter,
2509 TIMERVALUE0_G(sge_params->sge_timer_value_0_and_1));
2510 s->timer_val[1] = core_ticks_to_us(adapter,
2511 TIMERVALUE1_G(sge_params->sge_timer_value_0_and_1));
2512 s->timer_val[2] = core_ticks_to_us(adapter,
2513 TIMERVALUE0_G(sge_params->sge_timer_value_2_and_3));
2514 s->timer_val[3] = core_ticks_to_us(adapter,
2515 TIMERVALUE1_G(sge_params->sge_timer_value_2_and_3));
2516 s->timer_val[4] = core_ticks_to_us(adapter,
2517 TIMERVALUE0_G(sge_params->sge_timer_value_4_and_5));
2518 s->timer_val[5] = core_ticks_to_us(adapter,
2519 TIMERVALUE1_G(sge_params->sge_timer_value_4_and_5));
2521 s->counter_val[0] = THRESHOLD_0_G(sge_params->sge_ingress_rx_threshold);
2522 s->counter_val[1] = THRESHOLD_1_G(sge_params->sge_ingress_rx_threshold);
2523 s->counter_val[2] = THRESHOLD_2_G(sge_params->sge_ingress_rx_threshold);
2524 s->counter_val[3] = THRESHOLD_3_G(sge_params->sge_ingress_rx_threshold);
2527 * Grab our Virtual Interface resource allocation, extract the
2528 * features that we're interested in and do a bit of sanity testing on
2531 err = t4vf_get_vfres(adapter);
2533 dev_err(adapter->pdev_dev, "unable to get virtual interface"
2534 " resources: err=%d\n", err);
2538 /* Check for various parameter sanity issues */
2539 if (adapter->params.vfres.pmask == 0) {
2540 dev_err(adapter->pdev_dev, "no port access configured\n"
2544 if (adapter->params.vfres.nvi == 0) {
2545 dev_err(adapter->pdev_dev, "no virtual interfaces configured/"
2550 /* Initialize nports and max_ethqsets now that we have our Virtual
2551 * Function Resources.
2553 size_nports_qsets(adapter);
2558 static inline void init_rspq(struct sge_rspq *rspq, u8 timer_idx,
2559 u8 pkt_cnt_idx, unsigned int size,
2560 unsigned int iqe_size)
2562 rspq->intr_params = (QINTR_TIMER_IDX_V(timer_idx) |
2563 (pkt_cnt_idx < SGE_NCOUNTERS ?
2564 QINTR_CNT_EN_F : 0));
2565 rspq->pktcnt_idx = (pkt_cnt_idx < SGE_NCOUNTERS
2568 rspq->iqe_len = iqe_size;
2573 * Perform default configuration of DMA queues depending on the number and
2574 * type of ports we found and the number of available CPUs. Most settings can
2575 * be modified by the admin via ethtool and cxgbtool prior to the adapter
2576 * being brought up for the first time.
2578 static void cfg_queues(struct adapter *adapter)
2580 struct sge *s = &adapter->sge;
2581 int q10g, n10g, qidx, pidx, qs;
2585 * We should not be called till we know how many Queue Sets we can
2586 * support. In particular, this means that we need to know what kind
2587 * of interrupts we'll be using ...
2589 BUG_ON((adapter->flags & (USING_MSIX|USING_MSI)) == 0);
2592 * Count the number of 10GbE Virtual Interfaces that we have.
2595 for_each_port(adapter, pidx)
2596 n10g += is_x_10g_port(&adap2pinfo(adapter, pidx)->link_cfg);
2599 * We default to 1 queue per non-10G port and up to # of cores queues
2605 int n1g = (adapter->params.nports - n10g);
2606 q10g = (adapter->sge.max_ethqsets - n1g) / n10g;
2607 if (q10g > num_online_cpus())
2608 q10g = num_online_cpus();
2612 * Allocate the "Queue Sets" to the various Virtual Interfaces.
2613 * The layout will be established in setup_sge_queues() when the
2614 * adapter is brough up for the first time.
2617 for_each_port(adapter, pidx) {
2618 struct port_info *pi = adap2pinfo(adapter, pidx);
2620 pi->first_qset = qidx;
2621 pi->nqsets = is_x_10g_port(&pi->link_cfg) ? q10g : 1;
2627 * The Ingress Queue Entry Size for our various Response Queues needs
2628 * to be big enough to accommodate the largest message we can receive
2629 * from the chip/firmware; which is 64 bytes ...
2634 * Set up default Queue Set parameters ... Start off with the
2635 * shortest interrupt holdoff timer.
2637 for (qs = 0; qs < s->max_ethqsets; qs++) {
2638 struct sge_eth_rxq *rxq = &s->ethrxq[qs];
2639 struct sge_eth_txq *txq = &s->ethtxq[qs];
2641 init_rspq(&rxq->rspq, 0, 0, 1024, iqe_size);
2647 * The firmware event queue is used for link state changes and
2648 * notifications of TX DMA completions.
2650 init_rspq(&s->fw_evtq, SGE_TIMER_RSTRT_CNTR, 0, 512, iqe_size);
2653 * The forwarded interrupt queue is used when we're in MSI interrupt
2654 * mode. In this mode all interrupts associated with RX queues will
2655 * be forwarded to a single queue which we'll associate with our MSI
2656 * interrupt vector. The messages dropped in the forwarded interrupt
2657 * queue will indicate which ingress queue needs servicing ... This
2658 * queue needs to be large enough to accommodate all of the ingress
2659 * queues which are forwarding their interrupt (+1 to prevent the PIDX
2660 * from equalling the CIDX if every ingress queue has an outstanding
2661 * interrupt). The queue doesn't need to be any larger because no
2662 * ingress queue will ever have more than one outstanding interrupt at
2665 init_rspq(&s->intrq, SGE_TIMER_RSTRT_CNTR, 0, MSIX_ENTRIES + 1,
2670 * Reduce the number of Ethernet queues across all ports to at most n.
2671 * n provides at least one queue per port.
2673 static void reduce_ethqs(struct adapter *adapter, int n)
2676 struct port_info *pi;
2679 * While we have too many active Ether Queue Sets, interate across the
2680 * "ports" and reduce their individual Queue Set allocations.
2682 BUG_ON(n < adapter->params.nports);
2683 while (n < adapter->sge.ethqsets)
2684 for_each_port(adapter, i) {
2685 pi = adap2pinfo(adapter, i);
2686 if (pi->nqsets > 1) {
2688 adapter->sge.ethqsets--;
2689 if (adapter->sge.ethqsets <= n)
2695 * Reassign the starting Queue Sets for each of the "ports" ...
2698 for_each_port(adapter, i) {
2699 pi = adap2pinfo(adapter, i);
2706 * We need to grab enough MSI-X vectors to cover our interrupt needs. Ideally
2707 * we get a separate MSI-X vector for every "Queue Set" plus any extras we
2708 * need. Minimally we need one for every Virtual Interface plus those needed
2709 * for our "extras". Note that this process may lower the maximum number of
2710 * allowed Queue Sets ...
2712 static int enable_msix(struct adapter *adapter)
2714 int i, want, need, nqsets;
2715 struct msix_entry entries[MSIX_ENTRIES];
2716 struct sge *s = &adapter->sge;
2718 for (i = 0; i < MSIX_ENTRIES; ++i)
2719 entries[i].entry = i;
2722 * We _want_ enough MSI-X interrupts to cover all of our "Queue Sets"
2723 * plus those needed for our "extras" (for example, the firmware
2724 * message queue). We _need_ at least one "Queue Set" per Virtual
2725 * Interface plus those needed for our "extras". So now we get to see
2726 * if the song is right ...
2728 want = s->max_ethqsets + MSIX_EXTRAS;
2729 need = adapter->params.nports + MSIX_EXTRAS;
2731 want = pci_enable_msix_range(adapter->pdev, entries, need, want);
2735 nqsets = want - MSIX_EXTRAS;
2736 if (nqsets < s->max_ethqsets) {
2737 dev_warn(adapter->pdev_dev, "only enough MSI-X vectors"
2738 " for %d Queue Sets\n", nqsets);
2739 s->max_ethqsets = nqsets;
2740 if (nqsets < s->ethqsets)
2741 reduce_ethqs(adapter, nqsets);
2743 for (i = 0; i < want; ++i)
2744 adapter->msix_info[i].vec = entries[i].vector;
2749 static const struct net_device_ops cxgb4vf_netdev_ops = {
2750 .ndo_open = cxgb4vf_open,
2751 .ndo_stop = cxgb4vf_stop,
2752 .ndo_start_xmit = t4vf_eth_xmit,
2753 .ndo_get_stats = cxgb4vf_get_stats,
2754 .ndo_set_rx_mode = cxgb4vf_set_rxmode,
2755 .ndo_set_mac_address = cxgb4vf_set_mac_addr,
2756 .ndo_validate_addr = eth_validate_addr,
2757 .ndo_do_ioctl = cxgb4vf_do_ioctl,
2758 .ndo_change_mtu = cxgb4vf_change_mtu,
2759 .ndo_fix_features = cxgb4vf_fix_features,
2760 .ndo_set_features = cxgb4vf_set_features,
2761 #ifdef CONFIG_NET_POLL_CONTROLLER
2762 .ndo_poll_controller = cxgb4vf_poll_controller,
2767 * "Probe" a device: initialize a device and construct all kernel and driver
2768 * state needed to manage the device. This routine is called "init_one" in
2771 static int cxgb4vf_pci_probe(struct pci_dev *pdev,
2772 const struct pci_device_id *ent)
2777 struct adapter *adapter;
2778 struct port_info *pi;
2779 struct net_device *netdev;
2782 * Print our driver banner the first time we're called to initialize a
2785 pr_info_once("%s - version %s\n", DRV_DESC, DRV_VERSION);
2788 * Initialize generic PCI device state.
2790 err = pci_enable_device(pdev);
2792 dev_err(&pdev->dev, "cannot enable PCI device\n");
2797 * Reserve PCI resources for the device. If we can't get them some
2798 * other driver may have already claimed the device ...
2800 err = pci_request_regions(pdev, KBUILD_MODNAME);
2802 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
2803 goto err_disable_device;
2807 * Set up our DMA mask: try for 64-bit address masking first and
2808 * fall back to 32-bit if we can't get 64 bits ...
2810 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2812 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
2814 dev_err(&pdev->dev, "unable to obtain 64-bit DMA for"
2815 " coherent allocations\n");
2816 goto err_release_regions;
2820 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2822 dev_err(&pdev->dev, "no usable DMA configuration\n");
2823 goto err_release_regions;
2829 * Enable bus mastering for the device ...
2831 pci_set_master(pdev);
2834 * Allocate our adapter data structure and attach it to the device.
2836 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
2839 goto err_release_regions;
2841 pci_set_drvdata(pdev, adapter);
2842 adapter->pdev = pdev;
2843 adapter->pdev_dev = &pdev->dev;
2845 adapter->mbox_log = kzalloc(sizeof(*adapter->mbox_log) +
2846 (sizeof(struct mbox_cmd) *
2847 T4VF_OS_LOG_MBOX_CMDS),
2849 if (!adapter->mbox_log) {
2851 goto err_free_adapter;
2853 adapter->mbox_log->size = T4VF_OS_LOG_MBOX_CMDS;
2856 * Initialize SMP data synchronization resources.
2858 spin_lock_init(&adapter->stats_lock);
2859 spin_lock_init(&adapter->mbox_lock);
2860 INIT_LIST_HEAD(&adapter->mlist.list);
2863 * Map our I/O registers in BAR0.
2865 adapter->regs = pci_ioremap_bar(pdev, 0);
2866 if (!adapter->regs) {
2867 dev_err(&pdev->dev, "cannot map device registers\n");
2869 goto err_free_adapter;
2872 /* Wait for the device to become ready before proceeding ...
2874 err = t4vf_prep_adapter(adapter);
2876 dev_err(adapter->pdev_dev, "device didn't become ready:"
2878 goto err_unmap_bar0;
2881 /* For T5 and later we want to use the new BAR-based User Doorbells,
2882 * so we need to map BAR2 here ...
2884 if (!is_t4(adapter->params.chip)) {
2885 adapter->bar2 = ioremap_wc(pci_resource_start(pdev, 2),
2886 pci_resource_len(pdev, 2));
2887 if (!adapter->bar2) {
2888 dev_err(adapter->pdev_dev, "cannot map BAR2 doorbells\n");
2890 goto err_unmap_bar0;
2894 * Initialize adapter level features.
2896 adapter->name = pci_name(pdev);
2897 adapter->msg_enable = dflt_msg_enable;
2898 err = adap_init0(adapter);
2903 * Allocate our "adapter ports" and stitch everything together.
2905 pmask = adapter->params.vfres.pmask;
2906 for_each_port(adapter, pidx) {
2910 * We simplistically allocate our virtual interfaces
2911 * sequentially across the port numbers to which we have
2912 * access rights. This should be configurable in some manner
2917 port_id = ffs(pmask) - 1;
2918 pmask &= ~(1 << port_id);
2919 viid = t4vf_alloc_vi(adapter, port_id);
2921 dev_err(&pdev->dev, "cannot allocate VI for port %d:"
2922 " err=%d\n", port_id, viid);
2928 * Allocate our network device and stitch things together.
2930 netdev = alloc_etherdev_mq(sizeof(struct port_info),
2932 if (netdev == NULL) {
2933 t4vf_free_vi(adapter, viid);
2937 adapter->port[pidx] = netdev;
2938 SET_NETDEV_DEV(netdev, &pdev->dev);
2939 pi = netdev_priv(netdev);
2940 pi->adapter = adapter;
2942 pi->port_id = port_id;
2946 * Initialize the starting state of our "port" and register
2949 pi->xact_addr_filt = -1;
2950 netif_carrier_off(netdev);
2951 netdev->irq = pdev->irq;
2953 netdev->hw_features = NETIF_F_SG | TSO_FLAGS |
2954 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2955 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_RXCSUM;
2956 netdev->vlan_features = NETIF_F_SG | TSO_FLAGS |
2957 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2959 netdev->features = netdev->hw_features |
2960 NETIF_F_HW_VLAN_CTAG_TX;
2962 netdev->features |= NETIF_F_HIGHDMA;
2964 netdev->priv_flags |= IFF_UNICAST_FLT;
2966 netdev->netdev_ops = &cxgb4vf_netdev_ops;
2967 netdev->ethtool_ops = &cxgb4vf_ethtool_ops;
2970 * Initialize the hardware/software state for the port.
2972 err = t4vf_port_init(adapter, pidx);
2974 dev_err(&pdev->dev, "cannot initialize port %d\n",
2980 /* See what interrupts we'll be using. If we've been configured to
2981 * use MSI-X interrupts, try to enable them but fall back to using
2982 * MSI interrupts if we can't enable MSI-X interrupts. If we can't
2983 * get MSI interrupts we bail with the error.
2985 if (msi == MSI_MSIX && enable_msix(adapter) == 0)
2986 adapter->flags |= USING_MSIX;
2988 if (msi == MSI_MSIX) {
2989 dev_info(adapter->pdev_dev,
2990 "Unable to use MSI-X Interrupts; falling "
2991 "back to MSI Interrupts\n");
2993 /* We're going to need a Forwarded Interrupt Queue so
2994 * that may cut into how many Queue Sets we can
2998 size_nports_qsets(adapter);
3000 err = pci_enable_msi(pdev);
3002 dev_err(&pdev->dev, "Unable to allocate MSI Interrupts;"
3006 adapter->flags |= USING_MSI;
3009 /* Now that we know how many "ports" we have and what interrupt
3010 * mechanism we're going to use, we can configure our queue resources.
3012 cfg_queues(adapter);
3015 * The "card" is now ready to go. If any errors occur during device
3016 * registration we do not fail the whole "card" but rather proceed
3017 * only with the ports we manage to register successfully. However we
3018 * must register at least one net device.
3020 for_each_port(adapter, pidx) {
3021 struct port_info *pi = netdev_priv(adapter->port[pidx]);
3022 netdev = adapter->port[pidx];
3026 netif_set_real_num_tx_queues(netdev, pi->nqsets);
3027 netif_set_real_num_rx_queues(netdev, pi->nqsets);
3029 err = register_netdev(netdev);
3031 dev_warn(&pdev->dev, "cannot register net device %s,"
3032 " skipping\n", netdev->name);
3036 set_bit(pidx, &adapter->registered_device_map);
3038 if (adapter->registered_device_map == 0) {
3039 dev_err(&pdev->dev, "could not register any net devices\n");
3040 goto err_disable_interrupts;
3044 * Set up our debugfs entries.
3046 if (!IS_ERR_OR_NULL(cxgb4vf_debugfs_root)) {
3047 adapter->debugfs_root =
3048 debugfs_create_dir(pci_name(pdev),
3049 cxgb4vf_debugfs_root);
3050 if (IS_ERR_OR_NULL(adapter->debugfs_root))
3051 dev_warn(&pdev->dev, "could not create debugfs"
3054 setup_debugfs(adapter);
3058 * Print a short notice on the existence and configuration of the new
3059 * VF network device ...
3061 for_each_port(adapter, pidx) {
3062 dev_info(adapter->pdev_dev, "%s: Chelsio VF NIC PCIe %s\n",
3063 adapter->port[pidx]->name,
3064 (adapter->flags & USING_MSIX) ? "MSI-X" :
3065 (adapter->flags & USING_MSI) ? "MSI" : "");
3074 * Error recovery and exit code. Unwind state that's been created
3075 * so far and return the error.
3077 err_disable_interrupts:
3078 if (adapter->flags & USING_MSIX) {
3079 pci_disable_msix(adapter->pdev);
3080 adapter->flags &= ~USING_MSIX;
3081 } else if (adapter->flags & USING_MSI) {
3082 pci_disable_msi(adapter->pdev);
3083 adapter->flags &= ~USING_MSI;
3087 for_each_port(adapter, pidx) {
3088 netdev = adapter->port[pidx];
3091 pi = netdev_priv(netdev);
3092 t4vf_free_vi(adapter, pi->viid);
3093 if (test_bit(pidx, &adapter->registered_device_map))
3094 unregister_netdev(netdev);
3095 free_netdev(netdev);
3099 if (!is_t4(adapter->params.chip))
3100 iounmap(adapter->bar2);
3103 iounmap(adapter->regs);
3106 kfree(adapter->mbox_log);
3109 err_release_regions:
3110 pci_release_regions(pdev);
3111 pci_clear_master(pdev);
3114 pci_disable_device(pdev);
3120 * "Remove" a device: tear down all kernel and driver state created in the
3121 * "probe" routine and quiesce the device (disable interrupts, etc.). (Note
3122 * that this is called "remove_one" in the PF Driver.)
3124 static void cxgb4vf_pci_remove(struct pci_dev *pdev)
3126 struct adapter *adapter = pci_get_drvdata(pdev);
3129 * Tear down driver state associated with device.
3135 * Stop all of our activity. Unregister network port,
3136 * disable interrupts, etc.
3138 for_each_port(adapter, pidx)
3139 if (test_bit(pidx, &adapter->registered_device_map))
3140 unregister_netdev(adapter->port[pidx]);
3141 t4vf_sge_stop(adapter);
3142 if (adapter->flags & USING_MSIX) {
3143 pci_disable_msix(adapter->pdev);
3144 adapter->flags &= ~USING_MSIX;
3145 } else if (adapter->flags & USING_MSI) {
3146 pci_disable_msi(adapter->pdev);
3147 adapter->flags &= ~USING_MSI;
3151 * Tear down our debugfs entries.
3153 if (!IS_ERR_OR_NULL(adapter->debugfs_root)) {
3154 cleanup_debugfs(adapter);
3155 debugfs_remove_recursive(adapter->debugfs_root);
3159 * Free all of the various resources which we've acquired ...
3161 t4vf_free_sge_resources(adapter);
3162 for_each_port(adapter, pidx) {
3163 struct net_device *netdev = adapter->port[pidx];
3164 struct port_info *pi;
3169 pi = netdev_priv(netdev);
3170 t4vf_free_vi(adapter, pi->viid);
3171 free_netdev(netdev);
3173 iounmap(adapter->regs);
3174 if (!is_t4(adapter->params.chip))
3175 iounmap(adapter->bar2);
3176 kfree(adapter->mbox_log);
3181 * Disable the device and release its PCI resources.
3183 pci_disable_device(pdev);
3184 pci_clear_master(pdev);
3185 pci_release_regions(pdev);
3189 * "Shutdown" quiesce the device, stopping Ingress Packet and Interrupt
3192 static void cxgb4vf_pci_shutdown(struct pci_dev *pdev)
3194 struct adapter *adapter;
3197 adapter = pci_get_drvdata(pdev);
3201 /* Disable all Virtual Interfaces. This will shut down the
3202 * delivery of all ingress packets into the chip for these
3203 * Virtual Interfaces.
3205 for_each_port(adapter, pidx)
3206 if (test_bit(pidx, &adapter->registered_device_map))
3207 unregister_netdev(adapter->port[pidx]);
3209 /* Free up all Queues which will prevent further DMA and
3210 * Interrupts allowing various internal pathways to drain.
3212 t4vf_sge_stop(adapter);
3213 if (adapter->flags & USING_MSIX) {
3214 pci_disable_msix(adapter->pdev);
3215 adapter->flags &= ~USING_MSIX;
3216 } else if (adapter->flags & USING_MSI) {
3217 pci_disable_msi(adapter->pdev);
3218 adapter->flags &= ~USING_MSI;
3222 * Free up all Queues which will prevent further DMA and
3223 * Interrupts allowing various internal pathways to drain.
3225 t4vf_free_sge_resources(adapter);
3226 pci_set_drvdata(pdev, NULL);
3229 /* Macros needed to support the PCI Device ID Table ...
3231 #define CH_PCI_DEVICE_ID_TABLE_DEFINE_BEGIN \
3232 static const struct pci_device_id cxgb4vf_pci_tbl[] = {
3233 #define CH_PCI_DEVICE_ID_FUNCTION 0x8
3235 #define CH_PCI_ID_TABLE_ENTRY(devid) \
3236 { PCI_VDEVICE(CHELSIO, (devid)), 0 }
3238 #define CH_PCI_DEVICE_ID_TABLE_DEFINE_END { 0, } }
3240 #include "../cxgb4/t4_pci_id_tbl.h"
3242 MODULE_DESCRIPTION(DRV_DESC);
3243 MODULE_AUTHOR("Chelsio Communications");
3244 MODULE_LICENSE("Dual BSD/GPL");
3245 MODULE_VERSION(DRV_VERSION);
3246 MODULE_DEVICE_TABLE(pci, cxgb4vf_pci_tbl);
3248 static struct pci_driver cxgb4vf_driver = {
3249 .name = KBUILD_MODNAME,
3250 .id_table = cxgb4vf_pci_tbl,
3251 .probe = cxgb4vf_pci_probe,
3252 .remove = cxgb4vf_pci_remove,
3253 .shutdown = cxgb4vf_pci_shutdown,
3257 * Initialize global driver state.
3259 static int __init cxgb4vf_module_init(void)
3264 * Vet our module parameters.
3266 if (msi != MSI_MSIX && msi != MSI_MSI) {
3267 pr_warn("bad module parameter msi=%d; must be %d (MSI-X or MSI) or %d (MSI)\n",
3268 msi, MSI_MSIX, MSI_MSI);
3272 /* Debugfs support is optional, just warn if this fails */
3273 cxgb4vf_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
3274 if (IS_ERR_OR_NULL(cxgb4vf_debugfs_root))
3275 pr_warn("could not create debugfs entry, continuing\n");
3277 ret = pci_register_driver(&cxgb4vf_driver);
3278 if (ret < 0 && !IS_ERR_OR_NULL(cxgb4vf_debugfs_root))
3279 debugfs_remove(cxgb4vf_debugfs_root);
3284 * Tear down global driver state.
3286 static void __exit cxgb4vf_module_exit(void)
3288 pci_unregister_driver(&cxgb4vf_driver);
3289 debugfs_remove(cxgb4vf_debugfs_root);
3292 module_init(cxgb4vf_module_init);
3293 module_exit(cxgb4vf_module_exit);