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 #include <linux/version.h>
37 #include <linux/module.h>
38 #include <linux/moduleparam.h>
39 #include <linux/init.h>
40 #include <linux/pci.h>
41 #include <linux/dma-mapping.h>
42 #include <linux/netdevice.h>
43 #include <linux/etherdevice.h>
44 #include <linux/debugfs.h>
45 #include <linux/ethtool.h>
47 #include "t4vf_common.h"
48 #include "t4vf_defs.h"
50 #include "../cxgb4/t4_regs.h"
51 #include "../cxgb4/t4_msg.h"
54 * Generic information about the driver.
56 #define DRV_VERSION "1.0.0"
57 #define DRV_DESC "Chelsio T4 Virtual Function (VF) Network Driver"
65 * Default ethtool "message level" for adapters.
67 #define DFLT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | \
68 NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP |\
69 NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
71 static int dflt_msg_enable
= DFLT_MSG_ENABLE
;
73 module_param(dflt_msg_enable
, int, 0644);
74 MODULE_PARM_DESC(dflt_msg_enable
,
75 "default adapter ethtool message level bitmap");
78 * The driver uses the best interrupt scheme available on a platform in the
79 * order MSI-X then MSI. This parameter determines which of these schemes the
80 * driver may consider as follows:
82 * msi = 2: choose from among MSI-X and MSI
83 * msi = 1: only consider MSI interrupts
85 * Note that unlike the Physical Function driver, this Virtual Function driver
86 * does _not_ support legacy INTx interrupts (this limitation is mandated by
87 * the PCI-E SR-IOV standard).
91 #define MSI_DEFAULT MSI_MSIX
93 static int msi
= MSI_DEFAULT
;
95 module_param(msi
, int, 0644);
96 MODULE_PARM_DESC(msi
, "whether to use MSI-X or MSI");
99 * Fundamental constants.
100 * ======================
104 MAX_TXQ_ENTRIES
= 16384,
105 MAX_RSPQ_ENTRIES
= 16384,
106 MAX_RX_BUFFERS
= 16384,
108 MIN_TXQ_ENTRIES
= 32,
109 MIN_RSPQ_ENTRIES
= 128,
113 * For purposes of manipulating the Free List size we need to
114 * recognize that Free Lists are actually Egress Queues (the host
115 * produces free buffers which the hardware consumes), Egress Queues
116 * indices are all in units of Egress Context Units bytes, and free
117 * list entries are 64-bit PCI DMA addresses. And since the state of
118 * the Producer Index == the Consumer Index implies an EMPTY list, we
119 * always have at least one Egress Unit's worth of Free List entries
120 * unused. See sge.c for more details ...
122 EQ_UNIT
= SGE_EQ_IDXSIZE
,
123 FL_PER_EQ_UNIT
= EQ_UNIT
/ sizeof(__be64
),
124 MIN_FL_RESID
= FL_PER_EQ_UNIT
,
128 * Global driver state.
129 * ====================
132 static struct dentry
*cxgb4vf_debugfs_root
;
135 * OS "Callback" functions.
136 * ========================
140 * The link status has changed on the indicated "port" (Virtual Interface).
142 void t4vf_os_link_changed(struct adapter
*adapter
, int pidx
, int link_ok
)
144 struct net_device
*dev
= adapter
->port
[pidx
];
147 * If the port is disabled or the current recorded "link up"
148 * status matches the new status, just return.
150 if (!netif_running(dev
) || link_ok
== netif_carrier_ok(dev
))
154 * Tell the OS that the link status has changed and print a short
155 * informative message on the console about the event.
160 const struct port_info
*pi
= netdev_priv(dev
);
162 netif_carrier_on(dev
);
164 switch (pi
->link_cfg
.speed
) {
182 switch (pi
->link_cfg
.fc
) {
191 case PAUSE_RX
|PAUSE_TX
:
200 printk(KERN_INFO
"%s: link up, %s, full-duplex, %s PAUSE\n",
203 netif_carrier_off(dev
);
204 printk(KERN_INFO
"%s: link down\n", dev
->name
);
209 * Net device operations.
210 * ======================
214 * Record our new VLAN Group and enable/disable hardware VLAN Tag extraction
215 * based on whether the specified VLAN Group pointer is NULL or not.
217 static void cxgb4vf_vlan_rx_register(struct net_device
*dev
,
218 struct vlan_group
*grp
)
220 struct port_info
*pi
= netdev_priv(dev
);
223 t4vf_set_rxmode(pi
->adapter
, pi
->viid
, -1, -1, -1, -1, grp
!= NULL
, 0);
227 * Perform the MAC and PHY actions needed to enable a "port" (Virtual
230 static int link_start(struct net_device
*dev
)
233 struct port_info
*pi
= netdev_priv(dev
);
236 * We do not set address filters and promiscuity here, the stack does
237 * that step explicitly.
239 ret
= t4vf_set_rxmode(pi
->adapter
, pi
->viid
, dev
->mtu
, -1, -1, -1, -1,
242 ret
= t4vf_change_mac(pi
->adapter
, pi
->viid
,
243 pi
->xact_addr_filt
, dev
->dev_addr
, true);
245 pi
->xact_addr_filt
= ret
;
251 * We don't need to actually "start the link" itself since the
252 * firmware will do that for us when the first Virtual Interface
253 * is enabled on a port.
256 ret
= t4vf_enable_vi(pi
->adapter
, pi
->viid
, true, true);
261 * Name the MSI-X interrupts.
263 static void name_msix_vecs(struct adapter
*adapter
)
265 int namelen
= sizeof(adapter
->msix_info
[0].desc
) - 1;
271 snprintf(adapter
->msix_info
[MSIX_FW
].desc
, namelen
,
272 "%s-FWeventq", adapter
->name
);
273 adapter
->msix_info
[MSIX_FW
].desc
[namelen
] = 0;
278 for_each_port(adapter
, pidx
) {
279 struct net_device
*dev
= adapter
->port
[pidx
];
280 const struct port_info
*pi
= netdev_priv(dev
);
283 for (qs
= 0, msi
= MSIX_IQFLINT
; qs
< pi
->nqsets
; qs
++, msi
++) {
284 snprintf(adapter
->msix_info
[msi
].desc
, namelen
,
285 "%s-%d", dev
->name
, qs
);
286 adapter
->msix_info
[msi
].desc
[namelen
] = 0;
292 * Request all of our MSI-X resources.
294 static int request_msix_queue_irqs(struct adapter
*adapter
)
296 struct sge
*s
= &adapter
->sge
;
302 err
= request_irq(adapter
->msix_info
[MSIX_FW
].vec
, t4vf_sge_intr_msix
,
303 0, adapter
->msix_info
[MSIX_FW
].desc
, &s
->fw_evtq
);
311 for_each_ethrxq(s
, rxq
) {
312 err
= request_irq(adapter
->msix_info
[msi
].vec
,
313 t4vf_sge_intr_msix
, 0,
314 adapter
->msix_info
[msi
].desc
,
315 &s
->ethrxq
[rxq
].rspq
);
324 free_irq(adapter
->msix_info
[--msi
].vec
, &s
->ethrxq
[rxq
].rspq
);
325 free_irq(adapter
->msix_info
[MSIX_FW
].vec
, &s
->fw_evtq
);
330 * Free our MSI-X resources.
332 static void free_msix_queue_irqs(struct adapter
*adapter
)
334 struct sge
*s
= &adapter
->sge
;
337 free_irq(adapter
->msix_info
[MSIX_FW
].vec
, &s
->fw_evtq
);
339 for_each_ethrxq(s
, rxq
)
340 free_irq(adapter
->msix_info
[msi
++].vec
,
341 &s
->ethrxq
[rxq
].rspq
);
345 * Turn on NAPI and start up interrupts on a response queue.
347 static void qenable(struct sge_rspq
*rspq
)
349 napi_enable(&rspq
->napi
);
352 * 0-increment the Going To Sleep register to start the timer and
355 t4_write_reg(rspq
->adapter
, T4VF_SGE_BASE_ADDR
+ SGE_VF_GTS
,
357 SEINTARM(rspq
->intr_params
) |
358 INGRESSQID(rspq
->cntxt_id
));
362 * Enable NAPI scheduling and interrupt generation for all Receive Queues.
364 static void enable_rx(struct adapter
*adapter
)
367 struct sge
*s
= &adapter
->sge
;
369 for_each_ethrxq(s
, rxq
)
370 qenable(&s
->ethrxq
[rxq
].rspq
);
371 qenable(&s
->fw_evtq
);
374 * The interrupt queue doesn't use NAPI so we do the 0-increment of
375 * its Going To Sleep register here to get it started.
377 if (adapter
->flags
& USING_MSI
)
378 t4_write_reg(adapter
, T4VF_SGE_BASE_ADDR
+ SGE_VF_GTS
,
380 SEINTARM(s
->intrq
.intr_params
) |
381 INGRESSQID(s
->intrq
.cntxt_id
));
386 * Wait until all NAPI handlers are descheduled.
388 static void quiesce_rx(struct adapter
*adapter
)
390 struct sge
*s
= &adapter
->sge
;
393 for_each_ethrxq(s
, rxq
)
394 napi_disable(&s
->ethrxq
[rxq
].rspq
.napi
);
395 napi_disable(&s
->fw_evtq
.napi
);
399 * Response queue handler for the firmware event queue.
401 static int fwevtq_handler(struct sge_rspq
*rspq
, const __be64
*rsp
,
402 const struct pkt_gl
*gl
)
405 * Extract response opcode and get pointer to CPL message body.
407 struct adapter
*adapter
= rspq
->adapter
;
408 u8 opcode
= ((const struct rss_header
*)rsp
)->opcode
;
409 void *cpl
= (void *)(rsp
+ 1);
414 * We've received an asynchronous message from the firmware.
416 const struct cpl_fw6_msg
*fw_msg
= cpl
;
417 if (fw_msg
->type
== FW6_TYPE_CMD_RPL
)
418 t4vf_handle_fw_rpl(adapter
, fw_msg
->data
);
422 case CPL_SGE_EGR_UPDATE
: {
424 * We've received an Egress Queue Status Update message. We
425 * get these, if the SGE is configured to send these when the
426 * firmware passes certain points in processing our TX
427 * Ethernet Queue or if we make an explicit request for one.
428 * We use these updates to determine when we may need to
429 * restart a TX Ethernet Queue which was stopped for lack of
430 * free TX Queue Descriptors ...
432 const struct cpl_sge_egr_update
*p
= (void *)cpl
;
433 unsigned int qid
= EGR_QID(be32_to_cpu(p
->opcode_qid
));
434 struct sge
*s
= &adapter
->sge
;
436 struct sge_eth_txq
*txq
;
440 * Perform sanity checking on the Queue ID to make sure it
441 * really refers to one of our TX Ethernet Egress Queues which
442 * is active and matches the queue's ID. None of these error
443 * conditions should ever happen so we may want to either make
444 * them fatal and/or conditionalized under DEBUG.
446 eq_idx
= EQ_IDX(s
, qid
);
447 if (unlikely(eq_idx
>= MAX_EGRQ
)) {
448 dev_err(adapter
->pdev_dev
,
449 "Egress Update QID %d out of range\n", qid
);
452 tq
= s
->egr_map
[eq_idx
];
453 if (unlikely(tq
== NULL
)) {
454 dev_err(adapter
->pdev_dev
,
455 "Egress Update QID %d TXQ=NULL\n", qid
);
458 txq
= container_of(tq
, struct sge_eth_txq
, q
);
459 if (unlikely(tq
->abs_id
!= qid
)) {
460 dev_err(adapter
->pdev_dev
,
461 "Egress Update QID %d refers to TXQ %d\n",
467 * Restart a stopped TX Queue which has less than half of its
471 netif_tx_wake_queue(txq
->txq
);
476 dev_err(adapter
->pdev_dev
,
477 "unexpected CPL %#x on FW event queue\n", opcode
);
484 * Allocate SGE TX/RX response queues. Determine how many sets of SGE queues
485 * to use and initializes them. We support multiple "Queue Sets" per port if
486 * we have MSI-X, otherwise just one queue set per port.
488 static int setup_sge_queues(struct adapter
*adapter
)
490 struct sge
*s
= &adapter
->sge
;
494 * Clear "Queue Set" Free List Starving and TX Queue Mapping Error
497 bitmap_zero(s
->starving_fl
, MAX_EGRQ
);
500 * If we're using MSI interrupt mode we need to set up a "forwarded
501 * interrupt" queue which we'll set up with our MSI vector. The rest
502 * of the ingress queues will be set up to forward their interrupts to
503 * this queue ... This must be first since t4vf_sge_alloc_rxq() uses
504 * the intrq's queue ID as the interrupt forwarding queue for the
505 * subsequent calls ...
507 if (adapter
->flags
& USING_MSI
) {
508 err
= t4vf_sge_alloc_rxq(adapter
, &s
->intrq
, false,
509 adapter
->port
[0], 0, NULL
, NULL
);
511 goto err_free_queues
;
515 * Allocate our ingress queue for asynchronous firmware messages.
517 err
= t4vf_sge_alloc_rxq(adapter
, &s
->fw_evtq
, true, adapter
->port
[0],
518 MSIX_FW
, NULL
, fwevtq_handler
);
520 goto err_free_queues
;
523 * Allocate each "port"'s initial Queue Sets. These can be changed
524 * later on ... up to the point where any interface on the adapter is
525 * brought up at which point lots of things get nailed down
529 for_each_port(adapter
, pidx
) {
530 struct net_device
*dev
= adapter
->port
[pidx
];
531 struct port_info
*pi
= netdev_priv(dev
);
532 struct sge_eth_rxq
*rxq
= &s
->ethrxq
[pi
->first_qset
];
533 struct sge_eth_txq
*txq
= &s
->ethtxq
[pi
->first_qset
];
536 for (qs
= 0; qs
< pi
->nqsets
; qs
++, rxq
++, txq
++) {
537 err
= t4vf_sge_alloc_rxq(adapter
, &rxq
->rspq
, false,
539 &rxq
->fl
, t4vf_ethrx_handler
);
541 goto err_free_queues
;
543 err
= t4vf_sge_alloc_eth_txq(adapter
, txq
, dev
,
544 netdev_get_tx_queue(dev
, qs
),
545 s
->fw_evtq
.cntxt_id
);
547 goto err_free_queues
;
550 memset(&rxq
->stats
, 0, sizeof(rxq
->stats
));
555 * Create the reverse mappings for the queues.
557 s
->egr_base
= s
->ethtxq
[0].q
.abs_id
- s
->ethtxq
[0].q
.cntxt_id
;
558 s
->ingr_base
= s
->ethrxq
[0].rspq
.abs_id
- s
->ethrxq
[0].rspq
.cntxt_id
;
559 IQ_MAP(s
, s
->fw_evtq
.abs_id
) = &s
->fw_evtq
;
560 for_each_port(adapter
, pidx
) {
561 struct net_device
*dev
= adapter
->port
[pidx
];
562 struct port_info
*pi
= netdev_priv(dev
);
563 struct sge_eth_rxq
*rxq
= &s
->ethrxq
[pi
->first_qset
];
564 struct sge_eth_txq
*txq
= &s
->ethtxq
[pi
->first_qset
];
567 for (qs
= 0; qs
< pi
->nqsets
; qs
++, rxq
++, txq
++) {
568 IQ_MAP(s
, rxq
->rspq
.abs_id
) = &rxq
->rspq
;
569 EQ_MAP(s
, txq
->q
.abs_id
) = &txq
->q
;
572 * The FW_IQ_CMD doesn't return the Absolute Queue IDs
573 * for Free Lists but since all of the Egress Queues
574 * (including Free Lists) have Relative Queue IDs
575 * which are computed as Absolute - Base Queue ID, we
576 * can synthesize the Absolute Queue IDs for the Free
577 * Lists. This is useful for debugging purposes when
578 * we want to dump Queue Contexts via the PF Driver.
580 rxq
->fl
.abs_id
= rxq
->fl
.cntxt_id
+ s
->egr_base
;
581 EQ_MAP(s
, rxq
->fl
.abs_id
) = &rxq
->fl
;
587 t4vf_free_sge_resources(adapter
);
592 * Set up Receive Side Scaling (RSS) to distribute packets to multiple receive
593 * queues. We configure the RSS CPU lookup table to distribute to the number
594 * of HW receive queues, and the response queue lookup table to narrow that
595 * down to the response queues actually configured for each "port" (Virtual
596 * Interface). We always configure the RSS mapping for all ports since the
597 * mapping table has plenty of entries.
599 static int setup_rss(struct adapter
*adapter
)
603 for_each_port(adapter
, pidx
) {
604 struct port_info
*pi
= adap2pinfo(adapter
, pidx
);
605 struct sge_eth_rxq
*rxq
= &adapter
->sge
.ethrxq
[pi
->first_qset
];
606 u16 rss
[MAX_PORT_QSETS
];
609 for (qs
= 0; qs
< pi
->nqsets
; qs
++)
610 rss
[qs
] = rxq
[qs
].rspq
.abs_id
;
612 err
= t4vf_config_rss_range(adapter
, pi
->viid
,
613 0, pi
->rss_size
, rss
, pi
->nqsets
);
618 * Perform Global RSS Mode-specific initialization.
620 switch (adapter
->params
.rss
.mode
) {
621 case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL
:
623 * If Tunnel All Lookup isn't specified in the global
624 * RSS Configuration, then we need to specify a
625 * default Ingress Queue for any ingress packets which
626 * aren't hashed. We'll use our first ingress queue
629 if (!adapter
->params
.rss
.u
.basicvirtual
.tnlalllookup
) {
630 union rss_vi_config config
;
631 err
= t4vf_read_rss_vi_config(adapter
,
636 config
.basicvirtual
.defaultq
=
638 err
= t4vf_write_rss_vi_config(adapter
,
652 * Bring the adapter up. Called whenever we go from no "ports" open to having
653 * one open. This function performs the actions necessary to make an adapter
654 * operational, such as completing the initialization of HW modules, and
655 * enabling interrupts. Must be called with the rtnl lock held. (Note that
656 * this is called "cxgb_up" in the PF Driver.)
658 static int adapter_up(struct adapter
*adapter
)
663 * If this is the first time we've been called, perform basic
664 * adapter setup. Once we've done this, many of our adapter
665 * parameters can no longer be changed ...
667 if ((adapter
->flags
& FULL_INIT_DONE
) == 0) {
668 err
= setup_sge_queues(adapter
);
671 err
= setup_rss(adapter
);
673 t4vf_free_sge_resources(adapter
);
677 if (adapter
->flags
& USING_MSIX
)
678 name_msix_vecs(adapter
);
679 adapter
->flags
|= FULL_INIT_DONE
;
683 * Acquire our interrupt resources. We only support MSI-X and MSI.
685 BUG_ON((adapter
->flags
& (USING_MSIX
|USING_MSI
)) == 0);
686 if (adapter
->flags
& USING_MSIX
)
687 err
= request_msix_queue_irqs(adapter
);
689 err
= request_irq(adapter
->pdev
->irq
,
690 t4vf_intr_handler(adapter
), 0,
691 adapter
->name
, adapter
);
693 dev_err(adapter
->pdev_dev
, "request_irq failed, err %d\n",
699 * Enable NAPI ingress processing and return success.
702 t4vf_sge_start(adapter
);
707 * Bring the adapter down. Called whenever the last "port" (Virtual
708 * Interface) closed. (Note that this routine is called "cxgb_down" in the PF
711 static void adapter_down(struct adapter
*adapter
)
714 * Free interrupt resources.
716 if (adapter
->flags
& USING_MSIX
)
717 free_msix_queue_irqs(adapter
);
719 free_irq(adapter
->pdev
->irq
, adapter
);
722 * Wait for NAPI handlers to finish.
728 * Start up a net device.
730 static int cxgb4vf_open(struct net_device
*dev
)
733 struct port_info
*pi
= netdev_priv(dev
);
734 struct adapter
*adapter
= pi
->adapter
;
737 * If this is the first interface that we're opening on the "adapter",
738 * bring the "adapter" up now.
740 if (adapter
->open_device_map
== 0) {
741 err
= adapter_up(adapter
);
747 * Note that this interface is up and start everything up ...
749 netif_set_real_num_tx_queues(dev
, pi
->nqsets
);
750 err
= netif_set_real_num_rx_queues(dev
, pi
->nqsets
);
753 set_bit(pi
->port_id
, &adapter
->open_device_map
);
754 err
= link_start(dev
);
757 netif_tx_start_all_queues(dev
);
762 * Shut down a net device. This routine is called "cxgb_close" in the PF
765 static int cxgb4vf_stop(struct net_device
*dev
)
768 struct port_info
*pi
= netdev_priv(dev
);
769 struct adapter
*adapter
= pi
->adapter
;
771 netif_tx_stop_all_queues(dev
);
772 netif_carrier_off(dev
);
773 ret
= t4vf_enable_vi(adapter
, pi
->viid
, false, false);
774 pi
->link_cfg
.link_ok
= 0;
776 clear_bit(pi
->port_id
, &adapter
->open_device_map
);
777 if (adapter
->open_device_map
== 0)
778 adapter_down(adapter
);
783 * Translate our basic statistics into the standard "ifconfig" statistics.
785 static struct net_device_stats
*cxgb4vf_get_stats(struct net_device
*dev
)
787 struct t4vf_port_stats stats
;
788 struct port_info
*pi
= netdev2pinfo(dev
);
789 struct adapter
*adapter
= pi
->adapter
;
790 struct net_device_stats
*ns
= &dev
->stats
;
793 spin_lock(&adapter
->stats_lock
);
794 err
= t4vf_get_port_stats(adapter
, pi
->pidx
, &stats
);
795 spin_unlock(&adapter
->stats_lock
);
797 memset(ns
, 0, sizeof(*ns
));
801 ns
->tx_bytes
= (stats
.tx_bcast_bytes
+ stats
.tx_mcast_bytes
+
802 stats
.tx_ucast_bytes
+ stats
.tx_offload_bytes
);
803 ns
->tx_packets
= (stats
.tx_bcast_frames
+ stats
.tx_mcast_frames
+
804 stats
.tx_ucast_frames
+ stats
.tx_offload_frames
);
805 ns
->rx_bytes
= (stats
.rx_bcast_bytes
+ stats
.rx_mcast_bytes
+
806 stats
.rx_ucast_bytes
);
807 ns
->rx_packets
= (stats
.rx_bcast_frames
+ stats
.rx_mcast_frames
+
808 stats
.rx_ucast_frames
);
809 ns
->multicast
= stats
.rx_mcast_frames
;
810 ns
->tx_errors
= stats
.tx_drop_frames
;
811 ns
->rx_errors
= stats
.rx_err_frames
;
817 * Collect up to maxaddrs worth of a netdevice's unicast addresses, starting
818 * at a specified offset within the list, into an array of addrss pointers and
819 * return the number collected.
821 static inline unsigned int collect_netdev_uc_list_addrs(const struct net_device
*dev
,
824 unsigned int maxaddrs
)
826 unsigned int index
= 0;
827 unsigned int naddr
= 0;
828 const struct netdev_hw_addr
*ha
;
830 for_each_dev_addr(dev
, ha
)
831 if (index
++ >= offset
) {
832 addr
[naddr
++] = ha
->addr
;
833 if (naddr
>= maxaddrs
)
840 * Collect up to maxaddrs worth of a netdevice's multicast addresses, starting
841 * at a specified offset within the list, into an array of addrss pointers and
842 * return the number collected.
844 static inline unsigned int collect_netdev_mc_list_addrs(const struct net_device
*dev
,
847 unsigned int maxaddrs
)
849 unsigned int index
= 0;
850 unsigned int naddr
= 0;
851 const struct netdev_hw_addr
*ha
;
853 netdev_for_each_mc_addr(ha
, dev
)
854 if (index
++ >= offset
) {
855 addr
[naddr
++] = ha
->addr
;
856 if (naddr
>= maxaddrs
)
863 * Configure the exact and hash address filters to handle a port's multicast
864 * and secondary unicast MAC addresses.
866 static int set_addr_filters(const struct net_device
*dev
, bool sleep
)
871 unsigned int offset
, naddr
;
874 const struct port_info
*pi
= netdev_priv(dev
);
876 /* first do the secondary unicast addresses */
877 for (offset
= 0; ; offset
+= naddr
) {
878 naddr
= collect_netdev_uc_list_addrs(dev
, addr
, offset
,
883 ret
= t4vf_alloc_mac_filt(pi
->adapter
, pi
->viid
, free
,
884 naddr
, addr
, NULL
, &uhash
, sleep
);
891 /* next set up the multicast addresses */
892 for (offset
= 0; ; offset
+= naddr
) {
893 naddr
= collect_netdev_mc_list_addrs(dev
, addr
, offset
,
898 ret
= t4vf_alloc_mac_filt(pi
->adapter
, pi
->viid
, free
,
899 naddr
, addr
, NULL
, &mhash
, sleep
);
905 return t4vf_set_addr_hash(pi
->adapter
, pi
->viid
, uhash
!= 0,
906 uhash
| mhash
, sleep
);
910 * Set RX properties of a port, such as promiscruity, address filters, and MTU.
911 * If @mtu is -1 it is left unchanged.
913 static int set_rxmode(struct net_device
*dev
, int mtu
, bool sleep_ok
)
916 struct port_info
*pi
= netdev_priv(dev
);
918 ret
= set_addr_filters(dev
, sleep_ok
);
920 ret
= t4vf_set_rxmode(pi
->adapter
, pi
->viid
, -1,
921 (dev
->flags
& IFF_PROMISC
) != 0,
922 (dev
->flags
& IFF_ALLMULTI
) != 0,
928 * Set the current receive modes on the device.
930 static void cxgb4vf_set_rxmode(struct net_device
*dev
)
932 /* unfortunately we can't return errors to the stack */
933 set_rxmode(dev
, -1, false);
937 * Find the entry in the interrupt holdoff timer value array which comes
938 * closest to the specified interrupt holdoff value.
940 static int closest_timer(const struct sge
*s
, int us
)
942 int i
, timer_idx
= 0, min_delta
= INT_MAX
;
944 for (i
= 0; i
< ARRAY_SIZE(s
->timer_val
); i
++) {
945 int delta
= us
- s
->timer_val
[i
];
948 if (delta
< min_delta
) {
956 static int closest_thres(const struct sge
*s
, int thres
)
958 int i
, delta
, pktcnt_idx
= 0, min_delta
= INT_MAX
;
960 for (i
= 0; i
< ARRAY_SIZE(s
->counter_val
); i
++) {
961 delta
= thres
- s
->counter_val
[i
];
964 if (delta
< min_delta
) {
973 * Return a queue's interrupt hold-off time in us. 0 means no timer.
975 static unsigned int qtimer_val(const struct adapter
*adapter
,
976 const struct sge_rspq
*rspq
)
978 unsigned int timer_idx
= QINTR_TIMER_IDX_GET(rspq
->intr_params
);
980 return timer_idx
< SGE_NTIMERS
981 ? adapter
->sge
.timer_val
[timer_idx
]
986 * set_rxq_intr_params - set a queue's interrupt holdoff parameters
987 * @adapter: the adapter
988 * @rspq: the RX response queue
989 * @us: the hold-off time in us, or 0 to disable timer
990 * @cnt: the hold-off packet count, or 0 to disable counter
992 * Sets an RX response queue's interrupt hold-off time and packet count.
993 * At least one of the two needs to be enabled for the queue to generate
996 static int set_rxq_intr_params(struct adapter
*adapter
, struct sge_rspq
*rspq
,
997 unsigned int us
, unsigned int cnt
)
999 unsigned int timer_idx
;
1002 * If both the interrupt holdoff timer and count are specified as
1003 * zero, default to a holdoff count of 1 ...
1005 if ((us
| cnt
) == 0)
1009 * If an interrupt holdoff count has been specified, then find the
1010 * closest configured holdoff count and use that. If the response
1011 * queue has already been created, then update its queue context
1018 pktcnt_idx
= closest_thres(&adapter
->sge
, cnt
);
1019 if (rspq
->desc
&& rspq
->pktcnt_idx
!= pktcnt_idx
) {
1020 v
= FW_PARAMS_MNEM(FW_PARAMS_MNEM_DMAQ
) |
1022 FW_PARAMS_PARAM_DMAQ_IQ_INTCNTTHRESH
) |
1023 FW_PARAMS_PARAM_YZ(rspq
->cntxt_id
);
1024 err
= t4vf_set_params(adapter
, 1, &v
, &pktcnt_idx
);
1028 rspq
->pktcnt_idx
= pktcnt_idx
;
1032 * Compute the closest holdoff timer index from the supplied holdoff
1035 timer_idx
= (us
== 0
1036 ? SGE_TIMER_RSTRT_CNTR
1037 : closest_timer(&adapter
->sge
, us
));
1040 * Update the response queue's interrupt coalescing parameters and
1043 rspq
->intr_params
= (QINTR_TIMER_IDX(timer_idx
) |
1044 (cnt
> 0 ? QINTR_CNT_EN
: 0));
1049 * Return a version number to identify the type of adapter. The scheme is:
1050 * - bits 0..9: chip version
1051 * - bits 10..15: chip revision
1053 static inline unsigned int mk_adap_vers(const struct adapter
*adapter
)
1056 * Chip version 4, revision 0x3f (cxgb4vf).
1058 return 4 | (0x3f << 10);
1062 * Execute the specified ioctl command.
1064 static int cxgb4vf_do_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
1070 * The VF Driver doesn't have access to any of the other
1071 * common Ethernet device ioctl()'s (like reading/writing
1072 * PHY registers, etc.
1083 * Change the device's MTU.
1085 static int cxgb4vf_change_mtu(struct net_device
*dev
, int new_mtu
)
1088 struct port_info
*pi
= netdev_priv(dev
);
1090 /* accommodate SACK */
1094 ret
= t4vf_set_rxmode(pi
->adapter
, pi
->viid
, new_mtu
,
1095 -1, -1, -1, -1, true);
1102 * Change the devices MAC address.
1104 static int cxgb4vf_set_mac_addr(struct net_device
*dev
, void *_addr
)
1107 struct sockaddr
*addr
= _addr
;
1108 struct port_info
*pi
= netdev_priv(dev
);
1110 if (!is_valid_ether_addr(addr
->sa_data
))
1113 ret
= t4vf_change_mac(pi
->adapter
, pi
->viid
, pi
->xact_addr_filt
,
1114 addr
->sa_data
, true);
1118 memcpy(dev
->dev_addr
, addr
->sa_data
, dev
->addr_len
);
1119 pi
->xact_addr_filt
= ret
;
1123 #ifdef CONFIG_NET_POLL_CONTROLLER
1125 * Poll all of our receive queues. This is called outside of normal interrupt
1128 static void cxgb4vf_poll_controller(struct net_device
*dev
)
1130 struct port_info
*pi
= netdev_priv(dev
);
1131 struct adapter
*adapter
= pi
->adapter
;
1133 if (adapter
->flags
& USING_MSIX
) {
1134 struct sge_eth_rxq
*rxq
;
1137 rxq
= &adapter
->sge
.ethrxq
[pi
->first_qset
];
1138 for (nqsets
= pi
->nqsets
; nqsets
; nqsets
--) {
1139 t4vf_sge_intr_msix(0, &rxq
->rspq
);
1143 t4vf_intr_handler(adapter
)(0, adapter
);
1148 * Ethtool operations.
1149 * ===================
1151 * Note that we don't support any ethtool operations which change the physical
1152 * state of the port to which we're linked.
1156 * Return current port link settings.
1158 static int cxgb4vf_get_settings(struct net_device
*dev
,
1159 struct ethtool_cmd
*cmd
)
1161 const struct port_info
*pi
= netdev_priv(dev
);
1163 cmd
->supported
= pi
->link_cfg
.supported
;
1164 cmd
->advertising
= pi
->link_cfg
.advertising
;
1165 cmd
->speed
= netif_carrier_ok(dev
) ? pi
->link_cfg
.speed
: -1;
1166 cmd
->duplex
= DUPLEX_FULL
;
1168 cmd
->port
= (cmd
->supported
& SUPPORTED_TP
) ? PORT_TP
: PORT_FIBRE
;
1169 cmd
->phy_address
= pi
->port_id
;
1170 cmd
->transceiver
= XCVR_EXTERNAL
;
1171 cmd
->autoneg
= pi
->link_cfg
.autoneg
;
1178 * Return our driver information.
1180 static void cxgb4vf_get_drvinfo(struct net_device
*dev
,
1181 struct ethtool_drvinfo
*drvinfo
)
1183 struct adapter
*adapter
= netdev2adap(dev
);
1185 strcpy(drvinfo
->driver
, KBUILD_MODNAME
);
1186 strcpy(drvinfo
->version
, DRV_VERSION
);
1187 strcpy(drvinfo
->bus_info
, pci_name(to_pci_dev(dev
->dev
.parent
)));
1188 snprintf(drvinfo
->fw_version
, sizeof(drvinfo
->fw_version
),
1189 "%u.%u.%u.%u, TP %u.%u.%u.%u",
1190 FW_HDR_FW_VER_MAJOR_GET(adapter
->params
.dev
.fwrev
),
1191 FW_HDR_FW_VER_MINOR_GET(adapter
->params
.dev
.fwrev
),
1192 FW_HDR_FW_VER_MICRO_GET(adapter
->params
.dev
.fwrev
),
1193 FW_HDR_FW_VER_BUILD_GET(adapter
->params
.dev
.fwrev
),
1194 FW_HDR_FW_VER_MAJOR_GET(adapter
->params
.dev
.tprev
),
1195 FW_HDR_FW_VER_MINOR_GET(adapter
->params
.dev
.tprev
),
1196 FW_HDR_FW_VER_MICRO_GET(adapter
->params
.dev
.tprev
),
1197 FW_HDR_FW_VER_BUILD_GET(adapter
->params
.dev
.tprev
));
1201 * Return current adapter message level.
1203 static u32
cxgb4vf_get_msglevel(struct net_device
*dev
)
1205 return netdev2adap(dev
)->msg_enable
;
1209 * Set current adapter message level.
1211 static void cxgb4vf_set_msglevel(struct net_device
*dev
, u32 msglevel
)
1213 netdev2adap(dev
)->msg_enable
= msglevel
;
1217 * Return the device's current Queue Set ring size parameters along with the
1218 * allowed maximum values. Since ethtool doesn't understand the concept of
1219 * multi-queue devices, we just return the current values associated with the
1222 static void cxgb4vf_get_ringparam(struct net_device
*dev
,
1223 struct ethtool_ringparam
*rp
)
1225 const struct port_info
*pi
= netdev_priv(dev
);
1226 const struct sge
*s
= &pi
->adapter
->sge
;
1228 rp
->rx_max_pending
= MAX_RX_BUFFERS
;
1229 rp
->rx_mini_max_pending
= MAX_RSPQ_ENTRIES
;
1230 rp
->rx_jumbo_max_pending
= 0;
1231 rp
->tx_max_pending
= MAX_TXQ_ENTRIES
;
1233 rp
->rx_pending
= s
->ethrxq
[pi
->first_qset
].fl
.size
- MIN_FL_RESID
;
1234 rp
->rx_mini_pending
= s
->ethrxq
[pi
->first_qset
].rspq
.size
;
1235 rp
->rx_jumbo_pending
= 0;
1236 rp
->tx_pending
= s
->ethtxq
[pi
->first_qset
].q
.size
;
1240 * Set the Queue Set ring size parameters for the device. Again, since
1241 * ethtool doesn't allow for the concept of multiple queues per device, we'll
1242 * apply these new values across all of the Queue Sets associated with the
1243 * device -- after vetting them of course!
1245 static int cxgb4vf_set_ringparam(struct net_device
*dev
,
1246 struct ethtool_ringparam
*rp
)
1248 const struct port_info
*pi
= netdev_priv(dev
);
1249 struct adapter
*adapter
= pi
->adapter
;
1250 struct sge
*s
= &adapter
->sge
;
1253 if (rp
->rx_pending
> MAX_RX_BUFFERS
||
1254 rp
->rx_jumbo_pending
||
1255 rp
->tx_pending
> MAX_TXQ_ENTRIES
||
1256 rp
->rx_mini_pending
> MAX_RSPQ_ENTRIES
||
1257 rp
->rx_mini_pending
< MIN_RSPQ_ENTRIES
||
1258 rp
->rx_pending
< MIN_FL_ENTRIES
||
1259 rp
->tx_pending
< MIN_TXQ_ENTRIES
)
1262 if (adapter
->flags
& FULL_INIT_DONE
)
1265 for (qs
= pi
->first_qset
; qs
< pi
->first_qset
+ pi
->nqsets
; qs
++) {
1266 s
->ethrxq
[qs
].fl
.size
= rp
->rx_pending
+ MIN_FL_RESID
;
1267 s
->ethrxq
[qs
].rspq
.size
= rp
->rx_mini_pending
;
1268 s
->ethtxq
[qs
].q
.size
= rp
->tx_pending
;
1274 * Return the interrupt holdoff timer and count for the first Queue Set on the
1275 * device. Our extension ioctl() (the cxgbtool interface) allows the
1276 * interrupt holdoff timer to be read on all of the device's Queue Sets.
1278 static int cxgb4vf_get_coalesce(struct net_device
*dev
,
1279 struct ethtool_coalesce
*coalesce
)
1281 const struct port_info
*pi
= netdev_priv(dev
);
1282 const struct adapter
*adapter
= pi
->adapter
;
1283 const struct sge_rspq
*rspq
= &adapter
->sge
.ethrxq
[pi
->first_qset
].rspq
;
1285 coalesce
->rx_coalesce_usecs
= qtimer_val(adapter
, rspq
);
1286 coalesce
->rx_max_coalesced_frames
=
1287 ((rspq
->intr_params
& QINTR_CNT_EN
)
1288 ? adapter
->sge
.counter_val
[rspq
->pktcnt_idx
]
1294 * Set the RX interrupt holdoff timer and count for the first Queue Set on the
1295 * interface. Our extension ioctl() (the cxgbtool interface) allows us to set
1296 * the interrupt holdoff timer on any of the device's Queue Sets.
1298 static int cxgb4vf_set_coalesce(struct net_device
*dev
,
1299 struct ethtool_coalesce
*coalesce
)
1301 const struct port_info
*pi
= netdev_priv(dev
);
1302 struct adapter
*adapter
= pi
->adapter
;
1304 return set_rxq_intr_params(adapter
,
1305 &adapter
->sge
.ethrxq
[pi
->first_qset
].rspq
,
1306 coalesce
->rx_coalesce_usecs
,
1307 coalesce
->rx_max_coalesced_frames
);
1311 * Report current port link pause parameter settings.
1313 static void cxgb4vf_get_pauseparam(struct net_device
*dev
,
1314 struct ethtool_pauseparam
*pauseparam
)
1316 struct port_info
*pi
= netdev_priv(dev
);
1318 pauseparam
->autoneg
= (pi
->link_cfg
.requested_fc
& PAUSE_AUTONEG
) != 0;
1319 pauseparam
->rx_pause
= (pi
->link_cfg
.fc
& PAUSE_RX
) != 0;
1320 pauseparam
->tx_pause
= (pi
->link_cfg
.fc
& PAUSE_TX
) != 0;
1324 * Return whether RX Checksum Offloading is currently enabled for the device.
1326 static u32
cxgb4vf_get_rx_csum(struct net_device
*dev
)
1328 struct port_info
*pi
= netdev_priv(dev
);
1330 return (pi
->rx_offload
& RX_CSO
) != 0;
1334 * Turn RX Checksum Offloading on or off for the device.
1336 static int cxgb4vf_set_rx_csum(struct net_device
*dev
, u32 csum
)
1338 struct port_info
*pi
= netdev_priv(dev
);
1341 pi
->rx_offload
|= RX_CSO
;
1343 pi
->rx_offload
&= ~RX_CSO
;
1348 * Identify the port by blinking the port's LED.
1350 static int cxgb4vf_phys_id(struct net_device
*dev
, u32 id
)
1352 struct port_info
*pi
= netdev_priv(dev
);
1354 return t4vf_identify_port(pi
->adapter
, pi
->viid
, 5);
1358 * Port stats maintained per queue of the port.
1360 struct queue_port_stats
{
1371 * Strings for the ETH_SS_STATS statistics set ("ethtool -S"). Note that
1372 * these need to match the order of statistics returned by
1373 * t4vf_get_port_stats().
1375 static const char stats_strings
[][ETH_GSTRING_LEN
] = {
1377 * These must match the layout of the t4vf_port_stats structure.
1379 "TxBroadcastBytes ",
1380 "TxBroadcastFrames ",
1381 "TxMulticastBytes ",
1382 "TxMulticastFrames ",
1388 "RxBroadcastBytes ",
1389 "RxBroadcastFrames ",
1390 "RxMulticastBytes ",
1391 "RxMulticastFrames ",
1397 * These are accumulated per-queue statistics and must match the
1398 * order of the fields in the queue_port_stats structure.
1410 * Return the number of statistics in the specified statistics set.
1412 static int cxgb4vf_get_sset_count(struct net_device
*dev
, int sset
)
1416 return ARRAY_SIZE(stats_strings
);
1424 * Return the strings for the specified statistics set.
1426 static void cxgb4vf_get_strings(struct net_device
*dev
,
1432 memcpy(data
, stats_strings
, sizeof(stats_strings
));
1438 * Small utility routine to accumulate queue statistics across the queues of
1441 static void collect_sge_port_stats(const struct adapter
*adapter
,
1442 const struct port_info
*pi
,
1443 struct queue_port_stats
*stats
)
1445 const struct sge_eth_txq
*txq
= &adapter
->sge
.ethtxq
[pi
->first_qset
];
1446 const struct sge_eth_rxq
*rxq
= &adapter
->sge
.ethrxq
[pi
->first_qset
];
1449 memset(stats
, 0, sizeof(*stats
));
1450 for (qs
= 0; qs
< pi
->nqsets
; qs
++, rxq
++, txq
++) {
1451 stats
->tso
+= txq
->tso
;
1452 stats
->tx_csum
+= txq
->tx_cso
;
1453 stats
->rx_csum
+= rxq
->stats
.rx_cso
;
1454 stats
->vlan_ex
+= rxq
->stats
.vlan_ex
;
1455 stats
->vlan_ins
+= txq
->vlan_ins
;
1456 stats
->lro_pkts
+= rxq
->stats
.lro_pkts
;
1457 stats
->lro_merged
+= rxq
->stats
.lro_merged
;
1462 * Return the ETH_SS_STATS statistics set.
1464 static void cxgb4vf_get_ethtool_stats(struct net_device
*dev
,
1465 struct ethtool_stats
*stats
,
1468 struct port_info
*pi
= netdev2pinfo(dev
);
1469 struct adapter
*adapter
= pi
->adapter
;
1470 int err
= t4vf_get_port_stats(adapter
, pi
->pidx
,
1471 (struct t4vf_port_stats
*)data
);
1473 memset(data
, 0, sizeof(struct t4vf_port_stats
));
1475 data
+= sizeof(struct t4vf_port_stats
) / sizeof(u64
);
1476 collect_sge_port_stats(adapter
, pi
, (struct queue_port_stats
*)data
);
1480 * Return the size of our register map.
1482 static int cxgb4vf_get_regs_len(struct net_device
*dev
)
1484 return T4VF_REGMAP_SIZE
;
1488 * Dump a block of registers, start to end inclusive, into a buffer.
1490 static void reg_block_dump(struct adapter
*adapter
, void *regbuf
,
1491 unsigned int start
, unsigned int end
)
1493 u32
*bp
= regbuf
+ start
- T4VF_REGMAP_START
;
1495 for ( ; start
<= end
; start
+= sizeof(u32
)) {
1497 * Avoid reading the Mailbox Control register since that
1498 * can trigger a Mailbox Ownership Arbitration cycle and
1499 * interfere with communication with the firmware.
1501 if (start
== T4VF_CIM_BASE_ADDR
+ CIM_VF_EXT_MAILBOX_CTRL
)
1504 *bp
++ = t4_read_reg(adapter
, start
);
1509 * Copy our entire register map into the provided buffer.
1511 static void cxgb4vf_get_regs(struct net_device
*dev
,
1512 struct ethtool_regs
*regs
,
1515 struct adapter
*adapter
= netdev2adap(dev
);
1517 regs
->version
= mk_adap_vers(adapter
);
1520 * Fill in register buffer with our register map.
1522 memset(regbuf
, 0, T4VF_REGMAP_SIZE
);
1524 reg_block_dump(adapter
, regbuf
,
1525 T4VF_SGE_BASE_ADDR
+ T4VF_MOD_MAP_SGE_FIRST
,
1526 T4VF_SGE_BASE_ADDR
+ T4VF_MOD_MAP_SGE_LAST
);
1527 reg_block_dump(adapter
, regbuf
,
1528 T4VF_MPS_BASE_ADDR
+ T4VF_MOD_MAP_MPS_FIRST
,
1529 T4VF_MPS_BASE_ADDR
+ T4VF_MOD_MAP_MPS_LAST
);
1530 reg_block_dump(adapter
, regbuf
,
1531 T4VF_PL_BASE_ADDR
+ T4VF_MOD_MAP_PL_FIRST
,
1532 T4VF_PL_BASE_ADDR
+ T4VF_MOD_MAP_PL_LAST
);
1533 reg_block_dump(adapter
, regbuf
,
1534 T4VF_CIM_BASE_ADDR
+ T4VF_MOD_MAP_CIM_FIRST
,
1535 T4VF_CIM_BASE_ADDR
+ T4VF_MOD_MAP_CIM_LAST
);
1537 reg_block_dump(adapter
, regbuf
,
1538 T4VF_MBDATA_BASE_ADDR
+ T4VF_MBDATA_FIRST
,
1539 T4VF_MBDATA_BASE_ADDR
+ T4VF_MBDATA_LAST
);
1543 * Report current Wake On LAN settings.
1545 static void cxgb4vf_get_wol(struct net_device
*dev
,
1546 struct ethtool_wolinfo
*wol
)
1550 memset(&wol
->sopass
, 0, sizeof(wol
->sopass
));
1554 * TCP Segmentation Offload flags which we support.
1556 #define TSO_FLAGS (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)
1559 * Set TCP Segmentation Offloading feature capabilities.
1561 static int cxgb4vf_set_tso(struct net_device
*dev
, u32 tso
)
1564 dev
->features
|= TSO_FLAGS
;
1566 dev
->features
&= ~TSO_FLAGS
;
1570 static struct ethtool_ops cxgb4vf_ethtool_ops
= {
1571 .get_settings
= cxgb4vf_get_settings
,
1572 .get_drvinfo
= cxgb4vf_get_drvinfo
,
1573 .get_msglevel
= cxgb4vf_get_msglevel
,
1574 .set_msglevel
= cxgb4vf_set_msglevel
,
1575 .get_ringparam
= cxgb4vf_get_ringparam
,
1576 .set_ringparam
= cxgb4vf_set_ringparam
,
1577 .get_coalesce
= cxgb4vf_get_coalesce
,
1578 .set_coalesce
= cxgb4vf_set_coalesce
,
1579 .get_pauseparam
= cxgb4vf_get_pauseparam
,
1580 .get_rx_csum
= cxgb4vf_get_rx_csum
,
1581 .set_rx_csum
= cxgb4vf_set_rx_csum
,
1582 .set_tx_csum
= ethtool_op_set_tx_ipv6_csum
,
1583 .set_sg
= ethtool_op_set_sg
,
1584 .get_link
= ethtool_op_get_link
,
1585 .get_strings
= cxgb4vf_get_strings
,
1586 .phys_id
= cxgb4vf_phys_id
,
1587 .get_sset_count
= cxgb4vf_get_sset_count
,
1588 .get_ethtool_stats
= cxgb4vf_get_ethtool_stats
,
1589 .get_regs_len
= cxgb4vf_get_regs_len
,
1590 .get_regs
= cxgb4vf_get_regs
,
1591 .get_wol
= cxgb4vf_get_wol
,
1592 .set_tso
= cxgb4vf_set_tso
,
1596 * /sys/kernel/debug/cxgb4vf support code and data.
1597 * ================================================
1601 * Show SGE Queue Set information. We display QPL Queues Sets per line.
1605 static int sge_qinfo_show(struct seq_file
*seq
, void *v
)
1607 struct adapter
*adapter
= seq
->private;
1608 int eth_entries
= DIV_ROUND_UP(adapter
->sge
.ethqsets
, QPL
);
1609 int qs
, r
= (uintptr_t)v
- 1;
1612 seq_putc(seq
, '\n');
1614 #define S3(fmt_spec, s, v) \
1616 seq_printf(seq, "%-12s", s); \
1617 for (qs = 0; qs < n; ++qs) \
1618 seq_printf(seq, " %16" fmt_spec, v); \
1619 seq_putc(seq, '\n'); \
1621 #define S(s, v) S3("s", s, v)
1622 #define T(s, v) S3("u", s, txq[qs].v)
1623 #define R(s, v) S3("u", s, rxq[qs].v)
1625 if (r
< eth_entries
) {
1626 const struct sge_eth_rxq
*rxq
= &adapter
->sge
.ethrxq
[r
* QPL
];
1627 const struct sge_eth_txq
*txq
= &adapter
->sge
.ethtxq
[r
* QPL
];
1628 int n
= min(QPL
, adapter
->sge
.ethqsets
- QPL
* r
);
1630 S("QType:", "Ethernet");
1632 (rxq
[qs
].rspq
.netdev
1633 ? rxq
[qs
].rspq
.netdev
->name
1636 (rxq
[qs
].rspq
.netdev
1637 ? ((struct port_info
*)
1638 netdev_priv(rxq
[qs
].rspq
.netdev
))->port_id
1640 T("TxQ ID:", q
.abs_id
);
1641 T("TxQ size:", q
.size
);
1642 T("TxQ inuse:", q
.in_use
);
1643 T("TxQ PIdx:", q
.pidx
);
1644 T("TxQ CIdx:", q
.cidx
);
1645 R("RspQ ID:", rspq
.abs_id
);
1646 R("RspQ size:", rspq
.size
);
1647 R("RspQE size:", rspq
.iqe_len
);
1648 S3("u", "Intr delay:", qtimer_val(adapter
, &rxq
[qs
].rspq
));
1649 S3("u", "Intr pktcnt:",
1650 adapter
->sge
.counter_val
[rxq
[qs
].rspq
.pktcnt_idx
]);
1651 R("RspQ CIdx:", rspq
.cidx
);
1652 R("RspQ Gen:", rspq
.gen
);
1653 R("FL ID:", fl
.abs_id
);
1654 R("FL size:", fl
.size
- MIN_FL_RESID
);
1655 R("FL avail:", fl
.avail
);
1656 R("FL PIdx:", fl
.pidx
);
1657 R("FL CIdx:", fl
.cidx
);
1663 const struct sge_rspq
*evtq
= &adapter
->sge
.fw_evtq
;
1665 seq_printf(seq
, "%-12s %16s\n", "QType:", "FW event queue");
1666 seq_printf(seq
, "%-12s %16u\n", "RspQ ID:", evtq
->abs_id
);
1667 seq_printf(seq
, "%-12s %16u\n", "Intr delay:",
1668 qtimer_val(adapter
, evtq
));
1669 seq_printf(seq
, "%-12s %16u\n", "Intr pktcnt:",
1670 adapter
->sge
.counter_val
[evtq
->pktcnt_idx
]);
1671 seq_printf(seq
, "%-12s %16u\n", "RspQ Cidx:", evtq
->cidx
);
1672 seq_printf(seq
, "%-12s %16u\n", "RspQ Gen:", evtq
->gen
);
1673 } else if (r
== 1) {
1674 const struct sge_rspq
*intrq
= &adapter
->sge
.intrq
;
1676 seq_printf(seq
, "%-12s %16s\n", "QType:", "Interrupt Queue");
1677 seq_printf(seq
, "%-12s %16u\n", "RspQ ID:", intrq
->abs_id
);
1678 seq_printf(seq
, "%-12s %16u\n", "Intr delay:",
1679 qtimer_val(adapter
, intrq
));
1680 seq_printf(seq
, "%-12s %16u\n", "Intr pktcnt:",
1681 adapter
->sge
.counter_val
[intrq
->pktcnt_idx
]);
1682 seq_printf(seq
, "%-12s %16u\n", "RspQ Cidx:", intrq
->cidx
);
1683 seq_printf(seq
, "%-12s %16u\n", "RspQ Gen:", intrq
->gen
);
1695 * Return the number of "entries" in our "file". We group the multi-Queue
1696 * sections with QPL Queue Sets per "entry". The sections of the output are:
1698 * Ethernet RX/TX Queue Sets
1699 * Firmware Event Queue
1700 * Forwarded Interrupt Queue (if in MSI mode)
1702 static int sge_queue_entries(const struct adapter
*adapter
)
1704 return DIV_ROUND_UP(adapter
->sge
.ethqsets
, QPL
) + 1 +
1705 ((adapter
->flags
& USING_MSI
) != 0);
1708 static void *sge_queue_start(struct seq_file
*seq
, loff_t
*pos
)
1710 int entries
= sge_queue_entries(seq
->private);
1712 return *pos
< entries
? (void *)((uintptr_t)*pos
+ 1) : NULL
;
1715 static void sge_queue_stop(struct seq_file
*seq
, void *v
)
1719 static void *sge_queue_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
1721 int entries
= sge_queue_entries(seq
->private);
1724 return *pos
< entries
? (void *)((uintptr_t)*pos
+ 1) : NULL
;
1727 static const struct seq_operations sge_qinfo_seq_ops
= {
1728 .start
= sge_queue_start
,
1729 .next
= sge_queue_next
,
1730 .stop
= sge_queue_stop
,
1731 .show
= sge_qinfo_show
1734 static int sge_qinfo_open(struct inode
*inode
, struct file
*file
)
1736 int res
= seq_open(file
, &sge_qinfo_seq_ops
);
1739 struct seq_file
*seq
= file
->private_data
;
1740 seq
->private = inode
->i_private
;
1745 static const struct file_operations sge_qinfo_debugfs_fops
= {
1746 .owner
= THIS_MODULE
,
1747 .open
= sge_qinfo_open
,
1749 .llseek
= seq_lseek
,
1750 .release
= seq_release
,
1754 * Show SGE Queue Set statistics. We display QPL Queues Sets per line.
1758 static int sge_qstats_show(struct seq_file
*seq
, void *v
)
1760 struct adapter
*adapter
= seq
->private;
1761 int eth_entries
= DIV_ROUND_UP(adapter
->sge
.ethqsets
, QPL
);
1762 int qs
, r
= (uintptr_t)v
- 1;
1765 seq_putc(seq
, '\n');
1767 #define S3(fmt, s, v) \
1769 seq_printf(seq, "%-16s", s); \
1770 for (qs = 0; qs < n; ++qs) \
1771 seq_printf(seq, " %8" fmt, v); \
1772 seq_putc(seq, '\n'); \
1774 #define S(s, v) S3("s", s, v)
1776 #define T3(fmt, s, v) S3(fmt, s, txq[qs].v)
1777 #define T(s, v) T3("lu", s, v)
1779 #define R3(fmt, s, v) S3(fmt, s, rxq[qs].v)
1780 #define R(s, v) R3("lu", s, v)
1782 if (r
< eth_entries
) {
1783 const struct sge_eth_rxq
*rxq
= &adapter
->sge
.ethrxq
[r
* QPL
];
1784 const struct sge_eth_txq
*txq
= &adapter
->sge
.ethtxq
[r
* QPL
];
1785 int n
= min(QPL
, adapter
->sge
.ethqsets
- QPL
* r
);
1787 S("QType:", "Ethernet");
1789 (rxq
[qs
].rspq
.netdev
1790 ? rxq
[qs
].rspq
.netdev
->name
1792 R3("u", "RspQNullInts:", rspq
.unhandled_irqs
);
1793 R("RxPackets:", stats
.pkts
);
1794 R("RxCSO:", stats
.rx_cso
);
1795 R("VLANxtract:", stats
.vlan_ex
);
1796 R("LROmerged:", stats
.lro_merged
);
1797 R("LROpackets:", stats
.lro_pkts
);
1798 R("RxDrops:", stats
.rx_drops
);
1800 T("TxCSO:", tx_cso
);
1801 T("VLANins:", vlan_ins
);
1802 T("TxQFull:", q
.stops
);
1803 T("TxQRestarts:", q
.restarts
);
1804 T("TxMapErr:", mapping_err
);
1805 R("FLAllocErr:", fl
.alloc_failed
);
1806 R("FLLrgAlcErr:", fl
.large_alloc_failed
);
1807 R("FLStarving:", fl
.starving
);
1813 const struct sge_rspq
*evtq
= &adapter
->sge
.fw_evtq
;
1815 seq_printf(seq
, "%-8s %16s\n", "QType:", "FW event queue");
1816 seq_printf(seq
, "%-16s %8u\n", "RspQNullInts:",
1817 evtq
->unhandled_irqs
);
1818 seq_printf(seq
, "%-16s %8u\n", "RspQ CIdx:", evtq
->cidx
);
1819 seq_printf(seq
, "%-16s %8u\n", "RspQ Gen:", evtq
->gen
);
1820 } else if (r
== 1) {
1821 const struct sge_rspq
*intrq
= &adapter
->sge
.intrq
;
1823 seq_printf(seq
, "%-8s %16s\n", "QType:", "Interrupt Queue");
1824 seq_printf(seq
, "%-16s %8u\n", "RspQNullInts:",
1825 intrq
->unhandled_irqs
);
1826 seq_printf(seq
, "%-16s %8u\n", "RspQ CIdx:", intrq
->cidx
);
1827 seq_printf(seq
, "%-16s %8u\n", "RspQ Gen:", intrq
->gen
);
1841 * Return the number of "entries" in our "file". We group the multi-Queue
1842 * sections with QPL Queue Sets per "entry". The sections of the output are:
1844 * Ethernet RX/TX Queue Sets
1845 * Firmware Event Queue
1846 * Forwarded Interrupt Queue (if in MSI mode)
1848 static int sge_qstats_entries(const struct adapter
*adapter
)
1850 return DIV_ROUND_UP(adapter
->sge
.ethqsets
, QPL
) + 1 +
1851 ((adapter
->flags
& USING_MSI
) != 0);
1854 static void *sge_qstats_start(struct seq_file
*seq
, loff_t
*pos
)
1856 int entries
= sge_qstats_entries(seq
->private);
1858 return *pos
< entries
? (void *)((uintptr_t)*pos
+ 1) : NULL
;
1861 static void sge_qstats_stop(struct seq_file
*seq
, void *v
)
1865 static void *sge_qstats_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
1867 int entries
= sge_qstats_entries(seq
->private);
1870 return *pos
< entries
? (void *)((uintptr_t)*pos
+ 1) : NULL
;
1873 static const struct seq_operations sge_qstats_seq_ops
= {
1874 .start
= sge_qstats_start
,
1875 .next
= sge_qstats_next
,
1876 .stop
= sge_qstats_stop
,
1877 .show
= sge_qstats_show
1880 static int sge_qstats_open(struct inode
*inode
, struct file
*file
)
1882 int res
= seq_open(file
, &sge_qstats_seq_ops
);
1885 struct seq_file
*seq
= file
->private_data
;
1886 seq
->private = inode
->i_private
;
1891 static const struct file_operations sge_qstats_proc_fops
= {
1892 .owner
= THIS_MODULE
,
1893 .open
= sge_qstats_open
,
1895 .llseek
= seq_lseek
,
1896 .release
= seq_release
,
1900 * Show PCI-E SR-IOV Virtual Function Resource Limits.
1902 static int resources_show(struct seq_file
*seq
, void *v
)
1904 struct adapter
*adapter
= seq
->private;
1905 struct vf_resources
*vfres
= &adapter
->params
.vfres
;
1907 #define S(desc, fmt, var) \
1908 seq_printf(seq, "%-60s " fmt "\n", \
1909 desc " (" #var "):", vfres->var)
1911 S("Virtual Interfaces", "%d", nvi
);
1912 S("Egress Queues", "%d", neq
);
1913 S("Ethernet Control", "%d", nethctrl
);
1914 S("Ingress Queues/w Free Lists/Interrupts", "%d", niqflint
);
1915 S("Ingress Queues", "%d", niq
);
1916 S("Traffic Class", "%d", tc
);
1917 S("Port Access Rights Mask", "%#x", pmask
);
1918 S("MAC Address Filters", "%d", nexactf
);
1919 S("Firmware Command Read Capabilities", "%#x", r_caps
);
1920 S("Firmware Command Write/Execute Capabilities", "%#x", wx_caps
);
1927 static int resources_open(struct inode
*inode
, struct file
*file
)
1929 return single_open(file
, resources_show
, inode
->i_private
);
1932 static const struct file_operations resources_proc_fops
= {
1933 .owner
= THIS_MODULE
,
1934 .open
= resources_open
,
1936 .llseek
= seq_lseek
,
1937 .release
= single_release
,
1941 * Show Virtual Interfaces.
1943 static int interfaces_show(struct seq_file
*seq
, void *v
)
1945 if (v
== SEQ_START_TOKEN
) {
1946 seq_puts(seq
, "Interface Port VIID\n");
1948 struct adapter
*adapter
= seq
->private;
1949 int pidx
= (uintptr_t)v
- 2;
1950 struct net_device
*dev
= adapter
->port
[pidx
];
1951 struct port_info
*pi
= netdev_priv(dev
);
1953 seq_printf(seq
, "%9s %4d %#5x\n",
1954 dev
->name
, pi
->port_id
, pi
->viid
);
1959 static inline void *interfaces_get_idx(struct adapter
*adapter
, loff_t pos
)
1961 return pos
<= adapter
->params
.nports
1962 ? (void *)(uintptr_t)(pos
+ 1)
1966 static void *interfaces_start(struct seq_file
*seq
, loff_t
*pos
)
1969 ? interfaces_get_idx(seq
->private, *pos
)
1973 static void *interfaces_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
1976 return interfaces_get_idx(seq
->private, *pos
);
1979 static void interfaces_stop(struct seq_file
*seq
, void *v
)
1983 static const struct seq_operations interfaces_seq_ops
= {
1984 .start
= interfaces_start
,
1985 .next
= interfaces_next
,
1986 .stop
= interfaces_stop
,
1987 .show
= interfaces_show
1990 static int interfaces_open(struct inode
*inode
, struct file
*file
)
1992 int res
= seq_open(file
, &interfaces_seq_ops
);
1995 struct seq_file
*seq
= file
->private_data
;
1996 seq
->private = inode
->i_private
;
2001 static const struct file_operations interfaces_proc_fops
= {
2002 .owner
= THIS_MODULE
,
2003 .open
= interfaces_open
,
2005 .llseek
= seq_lseek
,
2006 .release
= seq_release
,
2010 * /sys/kernel/debugfs/cxgb4vf/ files list.
2012 struct cxgb4vf_debugfs_entry
{
2013 const char *name
; /* name of debugfs node */
2014 mode_t mode
; /* file system mode */
2015 const struct file_operations
*fops
;
2018 static struct cxgb4vf_debugfs_entry debugfs_files
[] = {
2019 { "sge_qinfo", S_IRUGO
, &sge_qinfo_debugfs_fops
},
2020 { "sge_qstats", S_IRUGO
, &sge_qstats_proc_fops
},
2021 { "resources", S_IRUGO
, &resources_proc_fops
},
2022 { "interfaces", S_IRUGO
, &interfaces_proc_fops
},
2026 * Module and device initialization and cleanup code.
2027 * ==================================================
2031 * Set up out /sys/kernel/debug/cxgb4vf sub-nodes. We assume that the
2032 * directory (debugfs_root) has already been set up.
2034 static int __devinit
setup_debugfs(struct adapter
*adapter
)
2038 BUG_ON(adapter
->debugfs_root
== NULL
);
2041 * Debugfs support is best effort.
2043 for (i
= 0; i
< ARRAY_SIZE(debugfs_files
); i
++)
2044 (void)debugfs_create_file(debugfs_files
[i
].name
,
2045 debugfs_files
[i
].mode
,
2046 adapter
->debugfs_root
,
2048 debugfs_files
[i
].fops
);
2054 * Tear down the /sys/kernel/debug/cxgb4vf sub-nodes created above. We leave
2055 * it to our caller to tear down the directory (debugfs_root).
2057 static void cleanup_debugfs(struct adapter
*adapter
)
2059 BUG_ON(adapter
->debugfs_root
== NULL
);
2062 * Unlike our sister routine cleanup_proc(), we don't need to remove
2063 * individual entries because a call will be made to
2064 * debugfs_remove_recursive(). We just need to clean up any ancillary
2071 * Perform early "adapter" initialization. This is where we discover what
2072 * adapter parameters we're going to be using and initialize basic adapter
2075 static int __devinit
adap_init0(struct adapter
*adapter
)
2077 struct vf_resources
*vfres
= &adapter
->params
.vfres
;
2078 struct sge_params
*sge_params
= &adapter
->params
.sge
;
2079 struct sge
*s
= &adapter
->sge
;
2080 unsigned int ethqsets
;
2084 * Wait for the device to become ready before proceeding ...
2086 err
= t4vf_wait_dev_ready(adapter
);
2088 dev_err(adapter
->pdev_dev
, "device didn't become ready:"
2094 * Some environments do not properly handle PCIE FLRs -- e.g. in Linux
2095 * 2.6.31 and later we can't call pci_reset_function() in order to
2096 * issue an FLR because of a self- deadlock on the device semaphore.
2097 * Meanwhile, the OS infrastructure doesn't issue FLRs in all the
2098 * cases where they're needed -- for instance, some versions of KVM
2099 * fail to reset "Assigned Devices" when the VM reboots. Therefore we
2100 * use the firmware based reset in order to reset any per function
2103 err
= t4vf_fw_reset(adapter
);
2105 dev_err(adapter
->pdev_dev
, "FW reset failed: err=%d\n", err
);
2110 * Grab basic operational parameters. These will predominantly have
2111 * been set up by the Physical Function Driver or will be hard coded
2112 * into the adapter. We just have to live with them ... Note that
2113 * we _must_ get our VPD parameters before our SGE parameters because
2114 * we need to know the adapter's core clock from the VPD in order to
2115 * properly decode the SGE Timer Values.
2117 err
= t4vf_get_dev_params(adapter
);
2119 dev_err(adapter
->pdev_dev
, "unable to retrieve adapter"
2120 " device parameters: err=%d\n", err
);
2123 err
= t4vf_get_vpd_params(adapter
);
2125 dev_err(adapter
->pdev_dev
, "unable to retrieve adapter"
2126 " VPD parameters: err=%d\n", err
);
2129 err
= t4vf_get_sge_params(adapter
);
2131 dev_err(adapter
->pdev_dev
, "unable to retrieve adapter"
2132 " SGE parameters: err=%d\n", err
);
2135 err
= t4vf_get_rss_glb_config(adapter
);
2137 dev_err(adapter
->pdev_dev
, "unable to retrieve adapter"
2138 " RSS parameters: err=%d\n", err
);
2141 if (adapter
->params
.rss
.mode
!=
2142 FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL
) {
2143 dev_err(adapter
->pdev_dev
, "unable to operate with global RSS"
2144 " mode %d\n", adapter
->params
.rss
.mode
);
2147 err
= t4vf_sge_init(adapter
);
2149 dev_err(adapter
->pdev_dev
, "unable to use adapter parameters:"
2155 * Retrieve our RX interrupt holdoff timer values and counter
2156 * threshold values from the SGE parameters.
2158 s
->timer_val
[0] = core_ticks_to_us(adapter
,
2159 TIMERVALUE0_GET(sge_params
->sge_timer_value_0_and_1
));
2160 s
->timer_val
[1] = core_ticks_to_us(adapter
,
2161 TIMERVALUE1_GET(sge_params
->sge_timer_value_0_and_1
));
2162 s
->timer_val
[2] = core_ticks_to_us(adapter
,
2163 TIMERVALUE0_GET(sge_params
->sge_timer_value_2_and_3
));
2164 s
->timer_val
[3] = core_ticks_to_us(adapter
,
2165 TIMERVALUE1_GET(sge_params
->sge_timer_value_2_and_3
));
2166 s
->timer_val
[4] = core_ticks_to_us(adapter
,
2167 TIMERVALUE0_GET(sge_params
->sge_timer_value_4_and_5
));
2168 s
->timer_val
[5] = core_ticks_to_us(adapter
,
2169 TIMERVALUE1_GET(sge_params
->sge_timer_value_4_and_5
));
2172 THRESHOLD_0_GET(sge_params
->sge_ingress_rx_threshold
);
2174 THRESHOLD_1_GET(sge_params
->sge_ingress_rx_threshold
);
2176 THRESHOLD_2_GET(sge_params
->sge_ingress_rx_threshold
);
2178 THRESHOLD_3_GET(sge_params
->sge_ingress_rx_threshold
);
2181 * Grab our Virtual Interface resource allocation, extract the
2182 * features that we're interested in and do a bit of sanity testing on
2185 err
= t4vf_get_vfres(adapter
);
2187 dev_err(adapter
->pdev_dev
, "unable to get virtual interface"
2188 " resources: err=%d\n", err
);
2193 * The number of "ports" which we support is equal to the number of
2194 * Virtual Interfaces with which we've been provisioned.
2196 adapter
->params
.nports
= vfres
->nvi
;
2197 if (adapter
->params
.nports
> MAX_NPORTS
) {
2198 dev_warn(adapter
->pdev_dev
, "only using %d of %d allowed"
2199 " virtual interfaces\n", MAX_NPORTS
,
2200 adapter
->params
.nports
);
2201 adapter
->params
.nports
= MAX_NPORTS
;
2205 * We need to reserve a number of the ingress queues with Free List
2206 * and Interrupt capabilities for special interrupt purposes (like
2207 * asynchronous firmware messages, or forwarded interrupts if we're
2208 * using MSI). The rest of the FL/Intr-capable ingress queues will be
2209 * matched up one-for-one with Ethernet/Control egress queues in order
2210 * to form "Queue Sets" which will be aportioned between the "ports".
2211 * For each Queue Set, we'll need the ability to allocate two Egress
2212 * Contexts -- one for the Ingress Queue Free List and one for the TX
2215 ethqsets
= vfres
->niqflint
- INGQ_EXTRAS
;
2216 if (vfres
->nethctrl
!= ethqsets
) {
2217 dev_warn(adapter
->pdev_dev
, "unequal number of [available]"
2218 " ingress/egress queues (%d/%d); using minimum for"
2219 " number of Queue Sets\n", ethqsets
, vfres
->nethctrl
);
2220 ethqsets
= min(vfres
->nethctrl
, ethqsets
);
2222 if (vfres
->neq
< ethqsets
*2) {
2223 dev_warn(adapter
->pdev_dev
, "Not enough Egress Contexts (%d)"
2224 " to support Queue Sets (%d); reducing allowed Queue"
2225 " Sets\n", vfres
->neq
, ethqsets
);
2226 ethqsets
= vfres
->neq
/2;
2228 if (ethqsets
> MAX_ETH_QSETS
) {
2229 dev_warn(adapter
->pdev_dev
, "only using %d of %d allowed Queue"
2230 " Sets\n", MAX_ETH_QSETS
, adapter
->sge
.max_ethqsets
);
2231 ethqsets
= MAX_ETH_QSETS
;
2233 if (vfres
->niq
!= 0 || vfres
->neq
> ethqsets
*2) {
2234 dev_warn(adapter
->pdev_dev
, "unused resources niq/neq (%d/%d)"
2235 " ignored\n", vfres
->niq
, vfres
->neq
- ethqsets
*2);
2237 adapter
->sge
.max_ethqsets
= ethqsets
;
2240 * Check for various parameter sanity issues. Most checks simply
2241 * result in us using fewer resources than our provissioning but we
2242 * do need at least one "port" with which to work ...
2244 if (adapter
->sge
.max_ethqsets
< adapter
->params
.nports
) {
2245 dev_warn(adapter
->pdev_dev
, "only using %d of %d available"
2246 " virtual interfaces (too few Queue Sets)\n",
2247 adapter
->sge
.max_ethqsets
, adapter
->params
.nports
);
2248 adapter
->params
.nports
= adapter
->sge
.max_ethqsets
;
2250 if (adapter
->params
.nports
== 0) {
2251 dev_err(adapter
->pdev_dev
, "no virtual interfaces configured/"
2258 static inline void init_rspq(struct sge_rspq
*rspq
, u8 timer_idx
,
2259 u8 pkt_cnt_idx
, unsigned int size
,
2260 unsigned int iqe_size
)
2262 rspq
->intr_params
= (QINTR_TIMER_IDX(timer_idx
) |
2263 (pkt_cnt_idx
< SGE_NCOUNTERS
? QINTR_CNT_EN
: 0));
2264 rspq
->pktcnt_idx
= (pkt_cnt_idx
< SGE_NCOUNTERS
2267 rspq
->iqe_len
= iqe_size
;
2272 * Perform default configuration of DMA queues depending on the number and
2273 * type of ports we found and the number of available CPUs. Most settings can
2274 * be modified by the admin via ethtool and cxgbtool prior to the adapter
2275 * being brought up for the first time.
2277 static void __devinit
cfg_queues(struct adapter
*adapter
)
2279 struct sge
*s
= &adapter
->sge
;
2280 int q10g
, n10g
, qidx
, pidx
, qs
;
2284 * We should not be called till we know how many Queue Sets we can
2285 * support. In particular, this means that we need to know what kind
2286 * of interrupts we'll be using ...
2288 BUG_ON((adapter
->flags
& (USING_MSIX
|USING_MSI
)) == 0);
2291 * Count the number of 10GbE Virtual Interfaces that we have.
2294 for_each_port(adapter
, pidx
)
2295 n10g
+= is_10g_port(&adap2pinfo(adapter
, pidx
)->link_cfg
);
2298 * We default to 1 queue per non-10G port and up to # of cores queues
2304 int n1g
= (adapter
->params
.nports
- n10g
);
2305 q10g
= (adapter
->sge
.max_ethqsets
- n1g
) / n10g
;
2306 if (q10g
> num_online_cpus())
2307 q10g
= num_online_cpus();
2311 * Allocate the "Queue Sets" to the various Virtual Interfaces.
2312 * The layout will be established in setup_sge_queues() when the
2313 * adapter is brough up for the first time.
2316 for_each_port(adapter
, pidx
) {
2317 struct port_info
*pi
= adap2pinfo(adapter
, pidx
);
2319 pi
->first_qset
= qidx
;
2320 pi
->nqsets
= is_10g_port(&pi
->link_cfg
) ? q10g
: 1;
2326 * The Ingress Queue Entry Size for our various Response Queues needs
2327 * to be big enough to accommodate the largest message we can receive
2328 * from the chip/firmware; which is 64 bytes ...
2333 * Set up default Queue Set parameters ... Start off with the
2334 * shortest interrupt holdoff timer.
2336 for (qs
= 0; qs
< s
->max_ethqsets
; qs
++) {
2337 struct sge_eth_rxq
*rxq
= &s
->ethrxq
[qs
];
2338 struct sge_eth_txq
*txq
= &s
->ethtxq
[qs
];
2340 init_rspq(&rxq
->rspq
, 0, 0, 1024, iqe_size
);
2346 * The firmware event queue is used for link state changes and
2347 * notifications of TX DMA completions.
2349 init_rspq(&s
->fw_evtq
, SGE_TIMER_RSTRT_CNTR
, 0, 512, iqe_size
);
2352 * The forwarded interrupt queue is used when we're in MSI interrupt
2353 * mode. In this mode all interrupts associated with RX queues will
2354 * be forwarded to a single queue which we'll associate with our MSI
2355 * interrupt vector. The messages dropped in the forwarded interrupt
2356 * queue will indicate which ingress queue needs servicing ... This
2357 * queue needs to be large enough to accommodate all of the ingress
2358 * queues which are forwarding their interrupt (+1 to prevent the PIDX
2359 * from equalling the CIDX if every ingress queue has an outstanding
2360 * interrupt). The queue doesn't need to be any larger because no
2361 * ingress queue will ever have more than one outstanding interrupt at
2364 init_rspq(&s
->intrq
, SGE_TIMER_RSTRT_CNTR
, 0, MSIX_ENTRIES
+ 1,
2369 * Reduce the number of Ethernet queues across all ports to at most n.
2370 * n provides at least one queue per port.
2372 static void __devinit
reduce_ethqs(struct adapter
*adapter
, int n
)
2375 struct port_info
*pi
;
2378 * While we have too many active Ether Queue Sets, interate across the
2379 * "ports" and reduce their individual Queue Set allocations.
2381 BUG_ON(n
< adapter
->params
.nports
);
2382 while (n
< adapter
->sge
.ethqsets
)
2383 for_each_port(adapter
, i
) {
2384 pi
= adap2pinfo(adapter
, i
);
2385 if (pi
->nqsets
> 1) {
2387 adapter
->sge
.ethqsets
--;
2388 if (adapter
->sge
.ethqsets
<= n
)
2394 * Reassign the starting Queue Sets for each of the "ports" ...
2397 for_each_port(adapter
, i
) {
2398 pi
= adap2pinfo(adapter
, i
);
2405 * We need to grab enough MSI-X vectors to cover our interrupt needs. Ideally
2406 * we get a separate MSI-X vector for every "Queue Set" plus any extras we
2407 * need. Minimally we need one for every Virtual Interface plus those needed
2408 * for our "extras". Note that this process may lower the maximum number of
2409 * allowed Queue Sets ...
2411 static int __devinit
enable_msix(struct adapter
*adapter
)
2413 int i
, err
, want
, need
;
2414 struct msix_entry entries
[MSIX_ENTRIES
];
2415 struct sge
*s
= &adapter
->sge
;
2417 for (i
= 0; i
< MSIX_ENTRIES
; ++i
)
2418 entries
[i
].entry
= i
;
2421 * We _want_ enough MSI-X interrupts to cover all of our "Queue Sets"
2422 * plus those needed for our "extras" (for example, the firmware
2423 * message queue). We _need_ at least one "Queue Set" per Virtual
2424 * Interface plus those needed for our "extras". So now we get to see
2425 * if the song is right ...
2427 want
= s
->max_ethqsets
+ MSIX_EXTRAS
;
2428 need
= adapter
->params
.nports
+ MSIX_EXTRAS
;
2429 while ((err
= pci_enable_msix(adapter
->pdev
, entries
, want
)) >= need
)
2433 int nqsets
= want
- MSIX_EXTRAS
;
2434 if (nqsets
< s
->max_ethqsets
) {
2435 dev_warn(adapter
->pdev_dev
, "only enough MSI-X vectors"
2436 " for %d Queue Sets\n", nqsets
);
2437 s
->max_ethqsets
= nqsets
;
2438 if (nqsets
< s
->ethqsets
)
2439 reduce_ethqs(adapter
, nqsets
);
2441 for (i
= 0; i
< want
; ++i
)
2442 adapter
->msix_info
[i
].vec
= entries
[i
].vector
;
2443 } else if (err
> 0) {
2444 pci_disable_msix(adapter
->pdev
);
2445 dev_info(adapter
->pdev_dev
, "only %d MSI-X vectors left,"
2446 " not using MSI-X\n", err
);
2451 #ifdef HAVE_NET_DEVICE_OPS
2452 static const struct net_device_ops cxgb4vf_netdev_ops
= {
2453 .ndo_open
= cxgb4vf_open
,
2454 .ndo_stop
= cxgb4vf_stop
,
2455 .ndo_start_xmit
= t4vf_eth_xmit
,
2456 .ndo_get_stats
= cxgb4vf_get_stats
,
2457 .ndo_set_rx_mode
= cxgb4vf_set_rxmode
,
2458 .ndo_set_mac_address
= cxgb4vf_set_mac_addr
,
2459 .ndo_validate_addr
= eth_validate_addr
,
2460 .ndo_do_ioctl
= cxgb4vf_do_ioctl
,
2461 .ndo_change_mtu
= cxgb4vf_change_mtu
,
2462 .ndo_vlan_rx_register
= cxgb4vf_vlan_rx_register
,
2463 #ifdef CONFIG_NET_POLL_CONTROLLER
2464 .ndo_poll_controller
= cxgb4vf_poll_controller
,
2470 * "Probe" a device: initialize a device and construct all kernel and driver
2471 * state needed to manage the device. This routine is called "init_one" in
2474 static int __devinit
cxgb4vf_pci_probe(struct pci_dev
*pdev
,
2475 const struct pci_device_id
*ent
)
2477 static int version_printed
;
2482 struct adapter
*adapter
;
2483 struct port_info
*pi
;
2484 struct net_device
*netdev
;
2487 * Vet our module parameters.
2489 if (msi
!= MSI_MSIX
&& msi
!= MSI_MSI
) {
2490 dev_err(&pdev
->dev
, "bad module parameter msi=%d; must be %d"
2491 " (MSI-X or MSI) or %d (MSI)\n", msi
, MSI_MSIX
,
2498 * Print our driver banner the first time we're called to initialize a
2501 if (version_printed
== 0) {
2502 printk(KERN_INFO
"%s - version %s\n", DRV_DESC
, DRV_VERSION
);
2503 version_printed
= 1;
2507 * Initialize generic PCI device state.
2509 err
= pci_enable_device(pdev
);
2511 dev_err(&pdev
->dev
, "cannot enable PCI device\n");
2516 * Reserve PCI resources for the device. If we can't get them some
2517 * other driver may have already claimed the device ...
2519 err
= pci_request_regions(pdev
, KBUILD_MODNAME
);
2521 dev_err(&pdev
->dev
, "cannot obtain PCI resources\n");
2522 goto err_disable_device
;
2526 * Set up our DMA mask: try for 64-bit address masking first and
2527 * fall back to 32-bit if we can't get 64 bits ...
2529 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(64));
2531 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(64));
2533 dev_err(&pdev
->dev
, "unable to obtain 64-bit DMA for"
2534 " coherent allocations\n");
2535 goto err_release_regions
;
2539 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
2541 dev_err(&pdev
->dev
, "no usable DMA configuration\n");
2542 goto err_release_regions
;
2548 * Enable bus mastering for the device ...
2550 pci_set_master(pdev
);
2553 * Allocate our adapter data structure and attach it to the device.
2555 adapter
= kzalloc(sizeof(*adapter
), GFP_KERNEL
);
2558 goto err_release_regions
;
2560 pci_set_drvdata(pdev
, adapter
);
2561 adapter
->pdev
= pdev
;
2562 adapter
->pdev_dev
= &pdev
->dev
;
2565 * Initialize SMP data synchronization resources.
2567 spin_lock_init(&adapter
->stats_lock
);
2570 * Map our I/O registers in BAR0.
2572 adapter
->regs
= pci_ioremap_bar(pdev
, 0);
2573 if (!adapter
->regs
) {
2574 dev_err(&pdev
->dev
, "cannot map device registers\n");
2576 goto err_free_adapter
;
2580 * Initialize adapter level features.
2582 adapter
->name
= pci_name(pdev
);
2583 adapter
->msg_enable
= dflt_msg_enable
;
2584 err
= adap_init0(adapter
);
2589 * Allocate our "adapter ports" and stitch everything together.
2591 pmask
= adapter
->params
.vfres
.pmask
;
2592 for_each_port(adapter
, pidx
) {
2596 * We simplistically allocate our virtual interfaces
2597 * sequentially across the port numbers to which we have
2598 * access rights. This should be configurable in some manner
2603 port_id
= ffs(pmask
) - 1;
2604 pmask
&= ~(1 << port_id
);
2605 viid
= t4vf_alloc_vi(adapter
, port_id
);
2607 dev_err(&pdev
->dev
, "cannot allocate VI for port %d:"
2608 " err=%d\n", port_id
, viid
);
2614 * Allocate our network device and stitch things together.
2616 netdev
= alloc_etherdev_mq(sizeof(struct port_info
),
2618 if (netdev
== NULL
) {
2619 dev_err(&pdev
->dev
, "cannot allocate netdev for"
2620 " port %d\n", port_id
);
2621 t4vf_free_vi(adapter
, viid
);
2625 adapter
->port
[pidx
] = netdev
;
2626 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
2627 pi
= netdev_priv(netdev
);
2628 pi
->adapter
= adapter
;
2630 pi
->port_id
= port_id
;
2634 * Initialize the starting state of our "port" and register
2637 pi
->xact_addr_filt
= -1;
2638 pi
->rx_offload
= RX_CSO
;
2639 netif_carrier_off(netdev
);
2640 netdev
->irq
= pdev
->irq
;
2642 netdev
->features
= (NETIF_F_SG
| TSO_FLAGS
|
2643 NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
|
2644 NETIF_F_HW_VLAN_TX
| NETIF_F_HW_VLAN_RX
|
2647 netdev
->features
|= NETIF_F_HIGHDMA
;
2648 netdev
->vlan_features
=
2650 ~(NETIF_F_HW_VLAN_TX
| NETIF_F_HW_VLAN_RX
));
2652 #ifdef HAVE_NET_DEVICE_OPS
2653 netdev
->netdev_ops
= &cxgb4vf_netdev_ops
;
2655 netdev
->vlan_rx_register
= cxgb4vf_vlan_rx_register
;
2656 netdev
->open
= cxgb4vf_open
;
2657 netdev
->stop
= cxgb4vf_stop
;
2658 netdev
->hard_start_xmit
= t4vf_eth_xmit
;
2659 netdev
->get_stats
= cxgb4vf_get_stats
;
2660 netdev
->set_rx_mode
= cxgb4vf_set_rxmode
;
2661 netdev
->do_ioctl
= cxgb4vf_do_ioctl
;
2662 netdev
->change_mtu
= cxgb4vf_change_mtu
;
2663 netdev
->set_mac_address
= cxgb4vf_set_mac_addr
;
2664 #ifdef CONFIG_NET_POLL_CONTROLLER
2665 netdev
->poll_controller
= cxgb4vf_poll_controller
;
2668 SET_ETHTOOL_OPS(netdev
, &cxgb4vf_ethtool_ops
);
2671 * Initialize the hardware/software state for the port.
2673 err
= t4vf_port_init(adapter
, pidx
);
2675 dev_err(&pdev
->dev
, "cannot initialize port %d\n",
2682 * The "card" is now ready to go. If any errors occur during device
2683 * registration we do not fail the whole "card" but rather proceed
2684 * only with the ports we manage to register successfully. However we
2685 * must register at least one net device.
2687 for_each_port(adapter
, pidx
) {
2688 netdev
= adapter
->port
[pidx
];
2692 err
= register_netdev(netdev
);
2694 dev_warn(&pdev
->dev
, "cannot register net device %s,"
2695 " skipping\n", netdev
->name
);
2699 set_bit(pidx
, &adapter
->registered_device_map
);
2701 if (adapter
->registered_device_map
== 0) {
2702 dev_err(&pdev
->dev
, "could not register any net devices\n");
2707 * Set up our debugfs entries.
2709 if (cxgb4vf_debugfs_root
) {
2710 adapter
->debugfs_root
=
2711 debugfs_create_dir(pci_name(pdev
),
2712 cxgb4vf_debugfs_root
);
2713 if (adapter
->debugfs_root
== NULL
)
2714 dev_warn(&pdev
->dev
, "could not create debugfs"
2717 setup_debugfs(adapter
);
2721 * See what interrupts we'll be using. If we've been configured to
2722 * use MSI-X interrupts, try to enable them but fall back to using
2723 * MSI interrupts if we can't enable MSI-X interrupts. If we can't
2724 * get MSI interrupts we bail with the error.
2726 if (msi
== MSI_MSIX
&& enable_msix(adapter
) == 0)
2727 adapter
->flags
|= USING_MSIX
;
2729 err
= pci_enable_msi(pdev
);
2731 dev_err(&pdev
->dev
, "Unable to allocate %s interrupts;"
2733 msi
== MSI_MSIX
? "MSI-X or MSI" : "MSI", err
);
2734 goto err_free_debugfs
;
2736 adapter
->flags
|= USING_MSI
;
2740 * Now that we know how many "ports" we have and what their types are,
2741 * and how many Queue Sets we can support, we can configure our queue
2744 cfg_queues(adapter
);
2747 * Print a short notice on the existance and configuration of the new
2748 * VF network device ...
2750 for_each_port(adapter
, pidx
) {
2751 dev_info(adapter
->pdev_dev
, "%s: Chelsio VF NIC PCIe %s\n",
2752 adapter
->port
[pidx
]->name
,
2753 (adapter
->flags
& USING_MSIX
) ? "MSI-X" :
2754 (adapter
->flags
& USING_MSI
) ? "MSI" : "");
2763 * Error recovery and exit code. Unwind state that's been created
2764 * so far and return the error.
2768 if (adapter
->debugfs_root
) {
2769 cleanup_debugfs(adapter
);
2770 debugfs_remove_recursive(adapter
->debugfs_root
);
2774 for_each_port(adapter
, pidx
) {
2775 netdev
= adapter
->port
[pidx
];
2778 pi
= netdev_priv(netdev
);
2779 t4vf_free_vi(adapter
, pi
->viid
);
2780 if (test_bit(pidx
, &adapter
->registered_device_map
))
2781 unregister_netdev(netdev
);
2782 free_netdev(netdev
);
2786 iounmap(adapter
->regs
);
2790 pci_set_drvdata(pdev
, NULL
);
2792 err_release_regions
:
2793 pci_release_regions(pdev
);
2794 pci_set_drvdata(pdev
, NULL
);
2795 pci_clear_master(pdev
);
2798 pci_disable_device(pdev
);
2805 * "Remove" a device: tear down all kernel and driver state created in the
2806 * "probe" routine and quiesce the device (disable interrupts, etc.). (Note
2807 * that this is called "remove_one" in the PF Driver.)
2809 static void __devexit
cxgb4vf_pci_remove(struct pci_dev
*pdev
)
2811 struct adapter
*adapter
= pci_get_drvdata(pdev
);
2814 * Tear down driver state associated with device.
2820 * Stop all of our activity. Unregister network port,
2821 * disable interrupts, etc.
2823 for_each_port(adapter
, pidx
)
2824 if (test_bit(pidx
, &adapter
->registered_device_map
))
2825 unregister_netdev(adapter
->port
[pidx
]);
2826 t4vf_sge_stop(adapter
);
2827 if (adapter
->flags
& USING_MSIX
) {
2828 pci_disable_msix(adapter
->pdev
);
2829 adapter
->flags
&= ~USING_MSIX
;
2830 } else if (adapter
->flags
& USING_MSI
) {
2831 pci_disable_msi(adapter
->pdev
);
2832 adapter
->flags
&= ~USING_MSI
;
2836 * Tear down our debugfs entries.
2838 if (adapter
->debugfs_root
) {
2839 cleanup_debugfs(adapter
);
2840 debugfs_remove_recursive(adapter
->debugfs_root
);
2844 * Free all of the various resources which we've acquired ...
2846 t4vf_free_sge_resources(adapter
);
2847 for_each_port(adapter
, pidx
) {
2848 struct net_device
*netdev
= adapter
->port
[pidx
];
2849 struct port_info
*pi
;
2854 pi
= netdev_priv(netdev
);
2855 t4vf_free_vi(adapter
, pi
->viid
);
2856 free_netdev(netdev
);
2858 iounmap(adapter
->regs
);
2860 pci_set_drvdata(pdev
, NULL
);
2864 * Disable the device and release its PCI resources.
2866 pci_disable_device(pdev
);
2867 pci_clear_master(pdev
);
2868 pci_release_regions(pdev
);
2872 * PCI Device registration data structures.
2874 #define CH_DEVICE(devid, idx) \
2875 { PCI_VENDOR_ID_CHELSIO, devid, PCI_ANY_ID, PCI_ANY_ID, 0, 0, idx }
2877 static struct pci_device_id cxgb4vf_pci_tbl
[] = {
2878 CH_DEVICE(0xb000, 0), /* PE10K FPGA */
2879 CH_DEVICE(0x4800, 0), /* T440-dbg */
2880 CH_DEVICE(0x4801, 0), /* T420-cr */
2881 CH_DEVICE(0x4802, 0), /* T422-cr */
2882 CH_DEVICE(0x4803, 0), /* T440-cr */
2883 CH_DEVICE(0x4804, 0), /* T420-bch */
2884 CH_DEVICE(0x4805, 0), /* T440-bch */
2885 CH_DEVICE(0x4806, 0), /* T460-ch */
2886 CH_DEVICE(0x4807, 0), /* T420-so */
2887 CH_DEVICE(0x4808, 0), /* T420-cx */
2888 CH_DEVICE(0x4809, 0), /* T420-bt */
2889 CH_DEVICE(0x480a, 0), /* T404-bt */
2893 MODULE_DESCRIPTION(DRV_DESC
);
2894 MODULE_AUTHOR("Chelsio Communications");
2895 MODULE_LICENSE("Dual BSD/GPL");
2896 MODULE_VERSION(DRV_VERSION
);
2897 MODULE_DEVICE_TABLE(pci
, cxgb4vf_pci_tbl
);
2899 static struct pci_driver cxgb4vf_driver
= {
2900 .name
= KBUILD_MODNAME
,
2901 .id_table
= cxgb4vf_pci_tbl
,
2902 .probe
= cxgb4vf_pci_probe
,
2903 .remove
= __devexit_p(cxgb4vf_pci_remove
),
2907 * Initialize global driver state.
2909 static int __init
cxgb4vf_module_init(void)
2913 /* Debugfs support is optional, just warn if this fails */
2914 cxgb4vf_debugfs_root
= debugfs_create_dir(KBUILD_MODNAME
, NULL
);
2915 if (!cxgb4vf_debugfs_root
)
2916 printk(KERN_WARNING KBUILD_MODNAME
": could not create"
2917 " debugfs entry, continuing\n");
2919 ret
= pci_register_driver(&cxgb4vf_driver
);
2921 debugfs_remove(cxgb4vf_debugfs_root
);
2926 * Tear down global driver state.
2928 static void __exit
cxgb4vf_module_exit(void)
2930 pci_unregister_driver(&cxgb4vf_driver
);
2931 debugfs_remove(cxgb4vf_debugfs_root
);
2934 module_init(cxgb4vf_module_init
);
2935 module_exit(cxgb4vf_module_exit
);