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 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");
80 * The driver uses the best interrupt scheme available on a platform in the
81 * order MSI-X then MSI. This parameter determines which of these schemes the
82 * driver may consider as follows:
84 * msi = 2: choose from among MSI-X and MSI
85 * msi = 1: only consider MSI interrupts
87 * Note that unlike the Physical Function driver, this Virtual Function driver
88 * does _not_ support legacy INTx interrupts (this limitation is mandated by
89 * the PCI-E SR-IOV standard).
93 #define MSI_DEFAULT MSI_MSIX
95 static int msi
= MSI_DEFAULT
;
97 module_param(msi
, int, 0644);
98 MODULE_PARM_DESC(msi
, "whether to use MSI-X or MSI");
101 * Fundamental constants.
102 * ======================
106 MAX_TXQ_ENTRIES
= 16384,
107 MAX_RSPQ_ENTRIES
= 16384,
108 MAX_RX_BUFFERS
= 16384,
110 MIN_TXQ_ENTRIES
= 32,
111 MIN_RSPQ_ENTRIES
= 128,
115 * For purposes of manipulating the Free List size we need to
116 * recognize that Free Lists are actually Egress Queues (the host
117 * produces free buffers which the hardware consumes), Egress Queues
118 * indices are all in units of Egress Context Units bytes, and free
119 * list entries are 64-bit PCI DMA addresses. And since the state of
120 * the Producer Index == the Consumer Index implies an EMPTY list, we
121 * always have at least one Egress Unit's worth of Free List entries
122 * unused. See sge.c for more details ...
124 EQ_UNIT
= SGE_EQ_IDXSIZE
,
125 FL_PER_EQ_UNIT
= EQ_UNIT
/ sizeof(__be64
),
126 MIN_FL_RESID
= FL_PER_EQ_UNIT
,
130 * Global driver state.
131 * ====================
134 static struct dentry
*cxgb4vf_debugfs_root
;
137 * OS "Callback" functions.
138 * ========================
142 * The link status has changed on the indicated "port" (Virtual Interface).
144 void t4vf_os_link_changed(struct adapter
*adapter
, int pidx
, int link_ok
)
146 struct net_device
*dev
= adapter
->port
[pidx
];
149 * If the port is disabled or the current recorded "link up"
150 * status matches the new status, just return.
152 if (!netif_running(dev
) || link_ok
== netif_carrier_ok(dev
))
156 * Tell the OS that the link status has changed and print a short
157 * informative message on the console about the event.
162 const struct port_info
*pi
= netdev_priv(dev
);
164 netif_carrier_on(dev
);
166 switch (pi
->link_cfg
.speed
) {
188 switch (pi
->link_cfg
.fc
) {
197 case PAUSE_RX
|PAUSE_TX
:
206 netdev_info(dev
, "link up, %s, full-duplex, %s PAUSE\n", s
, fc
);
208 netif_carrier_off(dev
);
209 netdev_info(dev
, "link down\n");
214 * THe port module type has changed on the indicated "port" (Virtual
217 void t4vf_os_portmod_changed(struct adapter
*adapter
, int pidx
)
219 static const char * const mod_str
[] = {
220 NULL
, "LR", "SR", "ER", "passive DA", "active DA", "LRM"
222 const struct net_device
*dev
= adapter
->port
[pidx
];
223 const struct port_info
*pi
= netdev_priv(dev
);
225 if (pi
->mod_type
== FW_PORT_MOD_TYPE_NONE
)
226 dev_info(adapter
->pdev_dev
, "%s: port module unplugged\n",
228 else if (pi
->mod_type
< ARRAY_SIZE(mod_str
))
229 dev_info(adapter
->pdev_dev
, "%s: %s port module inserted\n",
230 dev
->name
, mod_str
[pi
->mod_type
]);
231 else if (pi
->mod_type
== FW_PORT_MOD_TYPE_NOTSUPPORTED
)
232 dev_info(adapter
->pdev_dev
, "%s: unsupported optical port "
233 "module inserted\n", dev
->name
);
234 else if (pi
->mod_type
== FW_PORT_MOD_TYPE_UNKNOWN
)
235 dev_info(adapter
->pdev_dev
, "%s: unknown port module inserted,"
236 "forcing TWINAX\n", dev
->name
);
237 else if (pi
->mod_type
== FW_PORT_MOD_TYPE_ERROR
)
238 dev_info(adapter
->pdev_dev
, "%s: transceiver module error\n",
241 dev_info(adapter
->pdev_dev
, "%s: unknown module type %d "
242 "inserted\n", dev
->name
, pi
->mod_type
);
246 * Net device operations.
247 * ======================
254 * Perform the MAC and PHY actions needed to enable a "port" (Virtual
257 static int link_start(struct net_device
*dev
)
260 struct port_info
*pi
= netdev_priv(dev
);
263 * We do not set address filters and promiscuity here, the stack does
264 * that step explicitly. Enable vlan accel.
266 ret
= t4vf_set_rxmode(pi
->adapter
, pi
->viid
, dev
->mtu
, -1, -1, -1, 1,
269 ret
= t4vf_change_mac(pi
->adapter
, pi
->viid
,
270 pi
->xact_addr_filt
, dev
->dev_addr
, true);
272 pi
->xact_addr_filt
= ret
;
278 * We don't need to actually "start the link" itself since the
279 * firmware will do that for us when the first Virtual Interface
280 * is enabled on a port.
283 ret
= t4vf_enable_vi(pi
->adapter
, pi
->viid
, true, true);
288 * Name the MSI-X interrupts.
290 static void name_msix_vecs(struct adapter
*adapter
)
292 int namelen
= sizeof(adapter
->msix_info
[0].desc
) - 1;
298 snprintf(adapter
->msix_info
[MSIX_FW
].desc
, namelen
,
299 "%s-FWeventq", adapter
->name
);
300 adapter
->msix_info
[MSIX_FW
].desc
[namelen
] = 0;
305 for_each_port(adapter
, pidx
) {
306 struct net_device
*dev
= adapter
->port
[pidx
];
307 const struct port_info
*pi
= netdev_priv(dev
);
310 for (qs
= 0, msi
= MSIX_IQFLINT
; qs
< pi
->nqsets
; qs
++, msi
++) {
311 snprintf(adapter
->msix_info
[msi
].desc
, namelen
,
312 "%s-%d", dev
->name
, qs
);
313 adapter
->msix_info
[msi
].desc
[namelen
] = 0;
319 * Request all of our MSI-X resources.
321 static int request_msix_queue_irqs(struct adapter
*adapter
)
323 struct sge
*s
= &adapter
->sge
;
329 err
= request_irq(adapter
->msix_info
[MSIX_FW
].vec
, t4vf_sge_intr_msix
,
330 0, adapter
->msix_info
[MSIX_FW
].desc
, &s
->fw_evtq
);
338 for_each_ethrxq(s
, rxq
) {
339 err
= request_irq(adapter
->msix_info
[msi
].vec
,
340 t4vf_sge_intr_msix
, 0,
341 adapter
->msix_info
[msi
].desc
,
342 &s
->ethrxq
[rxq
].rspq
);
351 free_irq(adapter
->msix_info
[--msi
].vec
, &s
->ethrxq
[rxq
].rspq
);
352 free_irq(adapter
->msix_info
[MSIX_FW
].vec
, &s
->fw_evtq
);
357 * Free our MSI-X resources.
359 static void free_msix_queue_irqs(struct adapter
*adapter
)
361 struct sge
*s
= &adapter
->sge
;
364 free_irq(adapter
->msix_info
[MSIX_FW
].vec
, &s
->fw_evtq
);
366 for_each_ethrxq(s
, rxq
)
367 free_irq(adapter
->msix_info
[msi
++].vec
,
368 &s
->ethrxq
[rxq
].rspq
);
372 * Turn on NAPI and start up interrupts on a response queue.
374 static void qenable(struct sge_rspq
*rspq
)
376 napi_enable(&rspq
->napi
);
379 * 0-increment the Going To Sleep register to start the timer and
382 t4_write_reg(rspq
->adapter
, T4VF_SGE_BASE_ADDR
+ SGE_VF_GTS
,
384 SEINTARM(rspq
->intr_params
) |
385 INGRESSQID(rspq
->cntxt_id
));
389 * Enable NAPI scheduling and interrupt generation for all Receive Queues.
391 static void enable_rx(struct adapter
*adapter
)
394 struct sge
*s
= &adapter
->sge
;
396 for_each_ethrxq(s
, rxq
)
397 qenable(&s
->ethrxq
[rxq
].rspq
);
398 qenable(&s
->fw_evtq
);
401 * The interrupt queue doesn't use NAPI so we do the 0-increment of
402 * its Going To Sleep register here to get it started.
404 if (adapter
->flags
& USING_MSI
)
405 t4_write_reg(adapter
, T4VF_SGE_BASE_ADDR
+ SGE_VF_GTS
,
407 SEINTARM(s
->intrq
.intr_params
) |
408 INGRESSQID(s
->intrq
.cntxt_id
));
413 * Wait until all NAPI handlers are descheduled.
415 static void quiesce_rx(struct adapter
*adapter
)
417 struct sge
*s
= &adapter
->sge
;
420 for_each_ethrxq(s
, rxq
)
421 napi_disable(&s
->ethrxq
[rxq
].rspq
.napi
);
422 napi_disable(&s
->fw_evtq
.napi
);
426 * Response queue handler for the firmware event queue.
428 static int fwevtq_handler(struct sge_rspq
*rspq
, const __be64
*rsp
,
429 const struct pkt_gl
*gl
)
432 * Extract response opcode and get pointer to CPL message body.
434 struct adapter
*adapter
= rspq
->adapter
;
435 u8 opcode
= ((const struct rss_header
*)rsp
)->opcode
;
436 void *cpl
= (void *)(rsp
+ 1);
441 * We've received an asynchronous message from the firmware.
443 const struct cpl_fw6_msg
*fw_msg
= cpl
;
444 if (fw_msg
->type
== FW6_TYPE_CMD_RPL
)
445 t4vf_handle_fw_rpl(adapter
, fw_msg
->data
);
450 /* FW can send EGR_UPDATEs encapsulated in a CPL_FW4_MSG.
452 const struct cpl_sge_egr_update
*p
= (void *)(rsp
+ 3);
453 opcode
= G_CPL_OPCODE(ntohl(p
->opcode_qid
));
454 if (opcode
!= CPL_SGE_EGR_UPDATE
) {
455 dev_err(adapter
->pdev_dev
, "unexpected FW4/CPL %#x on FW event queue\n"
463 case CPL_SGE_EGR_UPDATE
: {
465 * We've received an Egress Queue Status Update message. We
466 * get these, if the SGE is configured to send these when the
467 * firmware passes certain points in processing our TX
468 * Ethernet Queue or if we make an explicit request for one.
469 * We use these updates to determine when we may need to
470 * restart a TX Ethernet Queue which was stopped for lack of
471 * free TX Queue Descriptors ...
473 const struct cpl_sge_egr_update
*p
= cpl
;
474 unsigned int qid
= EGR_QID(be32_to_cpu(p
->opcode_qid
));
475 struct sge
*s
= &adapter
->sge
;
477 struct sge_eth_txq
*txq
;
481 * Perform sanity checking on the Queue ID to make sure it
482 * really refers to one of our TX Ethernet Egress Queues which
483 * is active and matches the queue's ID. None of these error
484 * conditions should ever happen so we may want to either make
485 * them fatal and/or conditionalized under DEBUG.
487 eq_idx
= EQ_IDX(s
, qid
);
488 if (unlikely(eq_idx
>= MAX_EGRQ
)) {
489 dev_err(adapter
->pdev_dev
,
490 "Egress Update QID %d out of range\n", qid
);
493 tq
= s
->egr_map
[eq_idx
];
494 if (unlikely(tq
== NULL
)) {
495 dev_err(adapter
->pdev_dev
,
496 "Egress Update QID %d TXQ=NULL\n", qid
);
499 txq
= container_of(tq
, struct sge_eth_txq
, q
);
500 if (unlikely(tq
->abs_id
!= qid
)) {
501 dev_err(adapter
->pdev_dev
,
502 "Egress Update QID %d refers to TXQ %d\n",
508 * Restart a stopped TX Queue which has less than half of its
512 netif_tx_wake_queue(txq
->txq
);
517 dev_err(adapter
->pdev_dev
,
518 "unexpected CPL %#x on FW event queue\n", opcode
);
525 * Allocate SGE TX/RX response queues. Determine how many sets of SGE queues
526 * to use and initializes them. We support multiple "Queue Sets" per port if
527 * we have MSI-X, otherwise just one queue set per port.
529 static int setup_sge_queues(struct adapter
*adapter
)
531 struct sge
*s
= &adapter
->sge
;
535 * Clear "Queue Set" Free List Starving and TX Queue Mapping Error
538 bitmap_zero(s
->starving_fl
, MAX_EGRQ
);
541 * If we're using MSI interrupt mode we need to set up a "forwarded
542 * interrupt" queue which we'll set up with our MSI vector. The rest
543 * of the ingress queues will be set up to forward their interrupts to
544 * this queue ... This must be first since t4vf_sge_alloc_rxq() uses
545 * the intrq's queue ID as the interrupt forwarding queue for the
546 * subsequent calls ...
548 if (adapter
->flags
& USING_MSI
) {
549 err
= t4vf_sge_alloc_rxq(adapter
, &s
->intrq
, false,
550 adapter
->port
[0], 0, NULL
, NULL
);
552 goto err_free_queues
;
556 * Allocate our ingress queue for asynchronous firmware messages.
558 err
= t4vf_sge_alloc_rxq(adapter
, &s
->fw_evtq
, true, adapter
->port
[0],
559 MSIX_FW
, NULL
, fwevtq_handler
);
561 goto err_free_queues
;
564 * Allocate each "port"'s initial Queue Sets. These can be changed
565 * later on ... up to the point where any interface on the adapter is
566 * brought up at which point lots of things get nailed down
570 for_each_port(adapter
, pidx
) {
571 struct net_device
*dev
= adapter
->port
[pidx
];
572 struct port_info
*pi
= netdev_priv(dev
);
573 struct sge_eth_rxq
*rxq
= &s
->ethrxq
[pi
->first_qset
];
574 struct sge_eth_txq
*txq
= &s
->ethtxq
[pi
->first_qset
];
577 for (qs
= 0; qs
< pi
->nqsets
; qs
++, rxq
++, txq
++) {
578 err
= t4vf_sge_alloc_rxq(adapter
, &rxq
->rspq
, false,
580 &rxq
->fl
, t4vf_ethrx_handler
);
582 goto err_free_queues
;
584 err
= t4vf_sge_alloc_eth_txq(adapter
, txq
, dev
,
585 netdev_get_tx_queue(dev
, qs
),
586 s
->fw_evtq
.cntxt_id
);
588 goto err_free_queues
;
591 memset(&rxq
->stats
, 0, sizeof(rxq
->stats
));
596 * Create the reverse mappings for the queues.
598 s
->egr_base
= s
->ethtxq
[0].q
.abs_id
- s
->ethtxq
[0].q
.cntxt_id
;
599 s
->ingr_base
= s
->ethrxq
[0].rspq
.abs_id
- s
->ethrxq
[0].rspq
.cntxt_id
;
600 IQ_MAP(s
, s
->fw_evtq
.abs_id
) = &s
->fw_evtq
;
601 for_each_port(adapter
, pidx
) {
602 struct net_device
*dev
= adapter
->port
[pidx
];
603 struct port_info
*pi
= netdev_priv(dev
);
604 struct sge_eth_rxq
*rxq
= &s
->ethrxq
[pi
->first_qset
];
605 struct sge_eth_txq
*txq
= &s
->ethtxq
[pi
->first_qset
];
608 for (qs
= 0; qs
< pi
->nqsets
; qs
++, rxq
++, txq
++) {
609 IQ_MAP(s
, rxq
->rspq
.abs_id
) = &rxq
->rspq
;
610 EQ_MAP(s
, txq
->q
.abs_id
) = &txq
->q
;
613 * The FW_IQ_CMD doesn't return the Absolute Queue IDs
614 * for Free Lists but since all of the Egress Queues
615 * (including Free Lists) have Relative Queue IDs
616 * which are computed as Absolute - Base Queue ID, we
617 * can synthesize the Absolute Queue IDs for the Free
618 * Lists. This is useful for debugging purposes when
619 * we want to dump Queue Contexts via the PF Driver.
621 rxq
->fl
.abs_id
= rxq
->fl
.cntxt_id
+ s
->egr_base
;
622 EQ_MAP(s
, rxq
->fl
.abs_id
) = &rxq
->fl
;
628 t4vf_free_sge_resources(adapter
);
633 * Set up Receive Side Scaling (RSS) to distribute packets to multiple receive
634 * queues. We configure the RSS CPU lookup table to distribute to the number
635 * of HW receive queues, and the response queue lookup table to narrow that
636 * down to the response queues actually configured for each "port" (Virtual
637 * Interface). We always configure the RSS mapping for all ports since the
638 * mapping table has plenty of entries.
640 static int setup_rss(struct adapter
*adapter
)
644 for_each_port(adapter
, pidx
) {
645 struct port_info
*pi
= adap2pinfo(adapter
, pidx
);
646 struct sge_eth_rxq
*rxq
= &adapter
->sge
.ethrxq
[pi
->first_qset
];
647 u16 rss
[MAX_PORT_QSETS
];
650 for (qs
= 0; qs
< pi
->nqsets
; qs
++)
651 rss
[qs
] = rxq
[qs
].rspq
.abs_id
;
653 err
= t4vf_config_rss_range(adapter
, pi
->viid
,
654 0, pi
->rss_size
, rss
, pi
->nqsets
);
659 * Perform Global RSS Mode-specific initialization.
661 switch (adapter
->params
.rss
.mode
) {
662 case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL
:
664 * If Tunnel All Lookup isn't specified in the global
665 * RSS Configuration, then we need to specify a
666 * default Ingress Queue for any ingress packets which
667 * aren't hashed. We'll use our first ingress queue
670 if (!adapter
->params
.rss
.u
.basicvirtual
.tnlalllookup
) {
671 union rss_vi_config config
;
672 err
= t4vf_read_rss_vi_config(adapter
,
677 config
.basicvirtual
.defaultq
=
679 err
= t4vf_write_rss_vi_config(adapter
,
693 * Bring the adapter up. Called whenever we go from no "ports" open to having
694 * one open. This function performs the actions necessary to make an adapter
695 * operational, such as completing the initialization of HW modules, and
696 * enabling interrupts. Must be called with the rtnl lock held. (Note that
697 * this is called "cxgb_up" in the PF Driver.)
699 static int adapter_up(struct adapter
*adapter
)
704 * If this is the first time we've been called, perform basic
705 * adapter setup. Once we've done this, many of our adapter
706 * parameters can no longer be changed ...
708 if ((adapter
->flags
& FULL_INIT_DONE
) == 0) {
709 err
= setup_sge_queues(adapter
);
712 err
= setup_rss(adapter
);
714 t4vf_free_sge_resources(adapter
);
718 if (adapter
->flags
& USING_MSIX
)
719 name_msix_vecs(adapter
);
720 adapter
->flags
|= FULL_INIT_DONE
;
724 * Acquire our interrupt resources. We only support MSI-X and MSI.
726 BUG_ON((adapter
->flags
& (USING_MSIX
|USING_MSI
)) == 0);
727 if (adapter
->flags
& USING_MSIX
)
728 err
= request_msix_queue_irqs(adapter
);
730 err
= request_irq(adapter
->pdev
->irq
,
731 t4vf_intr_handler(adapter
), 0,
732 adapter
->name
, adapter
);
734 dev_err(adapter
->pdev_dev
, "request_irq failed, err %d\n",
740 * Enable NAPI ingress processing and return success.
743 t4vf_sge_start(adapter
);
748 * Bring the adapter down. Called whenever the last "port" (Virtual
749 * Interface) closed. (Note that this routine is called "cxgb_down" in the PF
752 static void adapter_down(struct adapter
*adapter
)
755 * Free interrupt resources.
757 if (adapter
->flags
& USING_MSIX
)
758 free_msix_queue_irqs(adapter
);
760 free_irq(adapter
->pdev
->irq
, adapter
);
763 * Wait for NAPI handlers to finish.
769 * Start up a net device.
771 static int cxgb4vf_open(struct net_device
*dev
)
774 struct port_info
*pi
= netdev_priv(dev
);
775 struct adapter
*adapter
= pi
->adapter
;
778 * If this is the first interface that we're opening on the "adapter",
779 * bring the "adapter" up now.
781 if (adapter
->open_device_map
== 0) {
782 err
= adapter_up(adapter
);
788 * Note that this interface is up and start everything up ...
790 netif_set_real_num_tx_queues(dev
, pi
->nqsets
);
791 err
= netif_set_real_num_rx_queues(dev
, pi
->nqsets
);
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
;
863 * Collect up to maxaddrs worth of a netdevice's unicast addresses, starting
864 * at a specified offset within the list, into an array of addrss pointers and
865 * return the number collected.
867 static inline unsigned int collect_netdev_uc_list_addrs(const struct net_device
*dev
,
870 unsigned int maxaddrs
)
872 unsigned int index
= 0;
873 unsigned int naddr
= 0;
874 const struct netdev_hw_addr
*ha
;
876 for_each_dev_addr(dev
, ha
)
877 if (index
++ >= offset
) {
878 addr
[naddr
++] = ha
->addr
;
879 if (naddr
>= maxaddrs
)
886 * Collect up to maxaddrs worth of a netdevice's multicast addresses, starting
887 * at a specified offset within the list, into an array of addrss pointers and
888 * return the number collected.
890 static inline unsigned int collect_netdev_mc_list_addrs(const struct net_device
*dev
,
893 unsigned int maxaddrs
)
895 unsigned int index
= 0;
896 unsigned int naddr
= 0;
897 const struct netdev_hw_addr
*ha
;
899 netdev_for_each_mc_addr(ha
, dev
)
900 if (index
++ >= offset
) {
901 addr
[naddr
++] = ha
->addr
;
902 if (naddr
>= maxaddrs
)
909 * Configure the exact and hash address filters to handle a port's multicast
910 * and secondary unicast MAC addresses.
912 static int set_addr_filters(const struct net_device
*dev
, bool sleep
)
917 unsigned int offset
, naddr
;
920 const struct port_info
*pi
= netdev_priv(dev
);
922 /* first do the secondary unicast addresses */
923 for (offset
= 0; ; offset
+= naddr
) {
924 naddr
= collect_netdev_uc_list_addrs(dev
, addr
, offset
,
929 ret
= t4vf_alloc_mac_filt(pi
->adapter
, pi
->viid
, free
,
930 naddr
, addr
, NULL
, &uhash
, sleep
);
937 /* next set up the multicast addresses */
938 for (offset
= 0; ; offset
+= naddr
) {
939 naddr
= collect_netdev_mc_list_addrs(dev
, addr
, offset
,
944 ret
= t4vf_alloc_mac_filt(pi
->adapter
, pi
->viid
, free
,
945 naddr
, addr
, NULL
, &mhash
, sleep
);
951 return t4vf_set_addr_hash(pi
->adapter
, pi
->viid
, uhash
!= 0,
952 uhash
| mhash
, sleep
);
956 * Set RX properties of a port, such as promiscruity, address filters, and MTU.
957 * If @mtu is -1 it is left unchanged.
959 static int set_rxmode(struct net_device
*dev
, int mtu
, bool sleep_ok
)
962 struct port_info
*pi
= netdev_priv(dev
);
964 ret
= set_addr_filters(dev
, sleep_ok
);
966 ret
= t4vf_set_rxmode(pi
->adapter
, pi
->viid
, -1,
967 (dev
->flags
& IFF_PROMISC
) != 0,
968 (dev
->flags
& IFF_ALLMULTI
) != 0,
974 * Set the current receive modes on the device.
976 static void cxgb4vf_set_rxmode(struct net_device
*dev
)
978 /* unfortunately we can't return errors to the stack */
979 set_rxmode(dev
, -1, false);
983 * Find the entry in the interrupt holdoff timer value array which comes
984 * closest to the specified interrupt holdoff value.
986 static int closest_timer(const struct sge
*s
, int us
)
988 int i
, timer_idx
= 0, min_delta
= INT_MAX
;
990 for (i
= 0; i
< ARRAY_SIZE(s
->timer_val
); i
++) {
991 int delta
= us
- s
->timer_val
[i
];
994 if (delta
< min_delta
) {
1002 static int closest_thres(const struct sge
*s
, int thres
)
1004 int i
, delta
, pktcnt_idx
= 0, min_delta
= INT_MAX
;
1006 for (i
= 0; i
< ARRAY_SIZE(s
->counter_val
); i
++) {
1007 delta
= thres
- s
->counter_val
[i
];
1010 if (delta
< min_delta
) {
1019 * Return a queue's interrupt hold-off time in us. 0 means no timer.
1021 static unsigned int qtimer_val(const struct adapter
*adapter
,
1022 const struct sge_rspq
*rspq
)
1024 unsigned int timer_idx
= QINTR_TIMER_IDX_GET(rspq
->intr_params
);
1026 return timer_idx
< SGE_NTIMERS
1027 ? adapter
->sge
.timer_val
[timer_idx
]
1032 * set_rxq_intr_params - set a queue's interrupt holdoff parameters
1033 * @adapter: the adapter
1034 * @rspq: the RX response queue
1035 * @us: the hold-off time in us, or 0 to disable timer
1036 * @cnt: the hold-off packet count, or 0 to disable counter
1038 * Sets an RX response queue's interrupt hold-off time and packet count.
1039 * At least one of the two needs to be enabled for the queue to generate
1042 static int set_rxq_intr_params(struct adapter
*adapter
, struct sge_rspq
*rspq
,
1043 unsigned int us
, unsigned int cnt
)
1045 unsigned int timer_idx
;
1048 * If both the interrupt holdoff timer and count are specified as
1049 * zero, default to a holdoff count of 1 ...
1051 if ((us
| cnt
) == 0)
1055 * If an interrupt holdoff count has been specified, then find the
1056 * closest configured holdoff count and use that. If the response
1057 * queue has already been created, then update its queue context
1064 pktcnt_idx
= closest_thres(&adapter
->sge
, cnt
);
1065 if (rspq
->desc
&& rspq
->pktcnt_idx
!= pktcnt_idx
) {
1066 v
= FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DMAQ
) |
1067 FW_PARAMS_PARAM_X_V(
1068 FW_PARAMS_PARAM_DMAQ_IQ_INTCNTTHRESH
) |
1069 FW_PARAMS_PARAM_YZ_V(rspq
->cntxt_id
);
1070 err
= t4vf_set_params(adapter
, 1, &v
, &pktcnt_idx
);
1074 rspq
->pktcnt_idx
= pktcnt_idx
;
1078 * Compute the closest holdoff timer index from the supplied holdoff
1081 timer_idx
= (us
== 0
1082 ? SGE_TIMER_RSTRT_CNTR
1083 : closest_timer(&adapter
->sge
, us
));
1086 * Update the response queue's interrupt coalescing parameters and
1089 rspq
->intr_params
= (QINTR_TIMER_IDX(timer_idx
) |
1090 (cnt
> 0 ? QINTR_CNT_EN
: 0));
1095 * Return a version number to identify the type of adapter. The scheme is:
1096 * - bits 0..9: chip version
1097 * - bits 10..15: chip revision
1099 static inline unsigned int mk_adap_vers(const struct adapter
*adapter
)
1102 * Chip version 4, revision 0x3f (cxgb4vf).
1104 return CHELSIO_CHIP_VERSION(adapter
->params
.chip
) | (0x3f << 10);
1108 * Execute the specified ioctl command.
1110 static int cxgb4vf_do_ioctl(struct net_device
*dev
, struct ifreq
*ifr
, int cmd
)
1116 * The VF Driver doesn't have access to any of the other
1117 * common Ethernet device ioctl()'s (like reading/writing
1118 * PHY registers, etc.
1129 * Change the device's MTU.
1131 static int cxgb4vf_change_mtu(struct net_device
*dev
, int new_mtu
)
1134 struct port_info
*pi
= netdev_priv(dev
);
1136 /* accommodate SACK */
1140 ret
= t4vf_set_rxmode(pi
->adapter
, pi
->viid
, new_mtu
,
1141 -1, -1, -1, -1, true);
1147 static netdev_features_t
cxgb4vf_fix_features(struct net_device
*dev
,
1148 netdev_features_t features
)
1151 * Since there is no support for separate rx/tx vlan accel
1152 * enable/disable make sure tx flag is always in same state as rx.
1154 if (features
& NETIF_F_HW_VLAN_CTAG_RX
)
1155 features
|= NETIF_F_HW_VLAN_CTAG_TX
;
1157 features
&= ~NETIF_F_HW_VLAN_CTAG_TX
;
1162 static int cxgb4vf_set_features(struct net_device
*dev
,
1163 netdev_features_t features
)
1165 struct port_info
*pi
= netdev_priv(dev
);
1166 netdev_features_t changed
= dev
->features
^ features
;
1168 if (changed
& NETIF_F_HW_VLAN_CTAG_RX
)
1169 t4vf_set_rxmode(pi
->adapter
, pi
->viid
, -1, -1, -1, -1,
1170 features
& NETIF_F_HW_VLAN_CTAG_TX
, 0);
1176 * Change the devices MAC address.
1178 static int cxgb4vf_set_mac_addr(struct net_device
*dev
, void *_addr
)
1181 struct sockaddr
*addr
= _addr
;
1182 struct port_info
*pi
= netdev_priv(dev
);
1184 if (!is_valid_ether_addr(addr
->sa_data
))
1185 return -EADDRNOTAVAIL
;
1187 ret
= t4vf_change_mac(pi
->adapter
, pi
->viid
, pi
->xact_addr_filt
,
1188 addr
->sa_data
, true);
1192 memcpy(dev
->dev_addr
, addr
->sa_data
, dev
->addr_len
);
1193 pi
->xact_addr_filt
= ret
;
1197 #ifdef CONFIG_NET_POLL_CONTROLLER
1199 * Poll all of our receive queues. This is called outside of normal interrupt
1202 static void cxgb4vf_poll_controller(struct net_device
*dev
)
1204 struct port_info
*pi
= netdev_priv(dev
);
1205 struct adapter
*adapter
= pi
->adapter
;
1207 if (adapter
->flags
& USING_MSIX
) {
1208 struct sge_eth_rxq
*rxq
;
1211 rxq
= &adapter
->sge
.ethrxq
[pi
->first_qset
];
1212 for (nqsets
= pi
->nqsets
; nqsets
; nqsets
--) {
1213 t4vf_sge_intr_msix(0, &rxq
->rspq
);
1217 t4vf_intr_handler(adapter
)(0, adapter
);
1222 * Ethtool operations.
1223 * ===================
1225 * Note that we don't support any ethtool operations which change the physical
1226 * state of the port to which we're linked.
1229 static unsigned int t4vf_from_fw_linkcaps(enum fw_port_type type
,
1234 if (type
== FW_PORT_TYPE_BT_SGMII
|| type
== FW_PORT_TYPE_BT_XFI
||
1235 type
== FW_PORT_TYPE_BT_XAUI
) {
1237 if (caps
& FW_PORT_CAP_SPEED_100M
)
1238 v
|= SUPPORTED_100baseT_Full
;
1239 if (caps
& FW_PORT_CAP_SPEED_1G
)
1240 v
|= SUPPORTED_1000baseT_Full
;
1241 if (caps
& FW_PORT_CAP_SPEED_10G
)
1242 v
|= SUPPORTED_10000baseT_Full
;
1243 } else if (type
== FW_PORT_TYPE_KX4
|| type
== FW_PORT_TYPE_KX
) {
1244 v
|= SUPPORTED_Backplane
;
1245 if (caps
& FW_PORT_CAP_SPEED_1G
)
1246 v
|= SUPPORTED_1000baseKX_Full
;
1247 if (caps
& FW_PORT_CAP_SPEED_10G
)
1248 v
|= SUPPORTED_10000baseKX4_Full
;
1249 } else if (type
== FW_PORT_TYPE_KR
)
1250 v
|= SUPPORTED_Backplane
| SUPPORTED_10000baseKR_Full
;
1251 else if (type
== FW_PORT_TYPE_BP_AP
)
1252 v
|= SUPPORTED_Backplane
| SUPPORTED_10000baseR_FEC
|
1253 SUPPORTED_10000baseKR_Full
| SUPPORTED_1000baseKX_Full
;
1254 else if (type
== FW_PORT_TYPE_BP4_AP
)
1255 v
|= SUPPORTED_Backplane
| SUPPORTED_10000baseR_FEC
|
1256 SUPPORTED_10000baseKR_Full
| SUPPORTED_1000baseKX_Full
|
1257 SUPPORTED_10000baseKX4_Full
;
1258 else if (type
== FW_PORT_TYPE_FIBER_XFI
||
1259 type
== FW_PORT_TYPE_FIBER_XAUI
||
1260 type
== FW_PORT_TYPE_SFP
||
1261 type
== FW_PORT_TYPE_QSFP_10G
||
1262 type
== FW_PORT_TYPE_QSA
) {
1263 v
|= SUPPORTED_FIBRE
;
1264 if (caps
& FW_PORT_CAP_SPEED_1G
)
1265 v
|= SUPPORTED_1000baseT_Full
;
1266 if (caps
& FW_PORT_CAP_SPEED_10G
)
1267 v
|= SUPPORTED_10000baseT_Full
;
1268 } else if (type
== FW_PORT_TYPE_BP40_BA
||
1269 type
== FW_PORT_TYPE_QSFP
) {
1270 v
|= SUPPORTED_40000baseSR4_Full
;
1271 v
|= SUPPORTED_FIBRE
;
1274 if (caps
& FW_PORT_CAP_ANEG
)
1275 v
|= SUPPORTED_Autoneg
;
1279 static int cxgb4vf_get_settings(struct net_device
*dev
, struct ethtool_cmd
*cmd
)
1281 const struct port_info
*p
= netdev_priv(dev
);
1283 if (p
->port_type
== FW_PORT_TYPE_BT_SGMII
||
1284 p
->port_type
== FW_PORT_TYPE_BT_XFI
||
1285 p
->port_type
== FW_PORT_TYPE_BT_XAUI
)
1286 cmd
->port
= PORT_TP
;
1287 else if (p
->port_type
== FW_PORT_TYPE_FIBER_XFI
||
1288 p
->port_type
== FW_PORT_TYPE_FIBER_XAUI
)
1289 cmd
->port
= PORT_FIBRE
;
1290 else if (p
->port_type
== FW_PORT_TYPE_SFP
||
1291 p
->port_type
== FW_PORT_TYPE_QSFP_10G
||
1292 p
->port_type
== FW_PORT_TYPE_QSA
||
1293 p
->port_type
== FW_PORT_TYPE_QSFP
) {
1294 if (p
->mod_type
== FW_PORT_MOD_TYPE_LR
||
1295 p
->mod_type
== FW_PORT_MOD_TYPE_SR
||
1296 p
->mod_type
== FW_PORT_MOD_TYPE_ER
||
1297 p
->mod_type
== FW_PORT_MOD_TYPE_LRM
)
1298 cmd
->port
= PORT_FIBRE
;
1299 else if (p
->mod_type
== FW_PORT_MOD_TYPE_TWINAX_PASSIVE
||
1300 p
->mod_type
== FW_PORT_MOD_TYPE_TWINAX_ACTIVE
)
1301 cmd
->port
= PORT_DA
;
1303 cmd
->port
= PORT_OTHER
;
1305 cmd
->port
= PORT_OTHER
;
1307 if (p
->mdio_addr
>= 0) {
1308 cmd
->phy_address
= p
->mdio_addr
;
1309 cmd
->transceiver
= XCVR_EXTERNAL
;
1310 cmd
->mdio_support
= p
->port_type
== FW_PORT_TYPE_BT_SGMII
?
1311 MDIO_SUPPORTS_C22
: MDIO_SUPPORTS_C45
;
1313 cmd
->phy_address
= 0; /* not really, but no better option */
1314 cmd
->transceiver
= XCVR_INTERNAL
;
1315 cmd
->mdio_support
= 0;
1318 cmd
->supported
= t4vf_from_fw_linkcaps(p
->port_type
,
1319 p
->link_cfg
.supported
);
1320 cmd
->advertising
= t4vf_from_fw_linkcaps(p
->port_type
,
1321 p
->link_cfg
.advertising
);
1322 ethtool_cmd_speed_set(cmd
,
1323 netif_carrier_ok(dev
) ? p
->link_cfg
.speed
: 0);
1324 cmd
->duplex
= DUPLEX_FULL
;
1325 cmd
->autoneg
= p
->link_cfg
.autoneg
;
1332 * Return our driver information.
1334 static void cxgb4vf_get_drvinfo(struct net_device
*dev
,
1335 struct ethtool_drvinfo
*drvinfo
)
1337 struct adapter
*adapter
= netdev2adap(dev
);
1339 strlcpy(drvinfo
->driver
, KBUILD_MODNAME
, sizeof(drvinfo
->driver
));
1340 strlcpy(drvinfo
->version
, DRV_VERSION
, sizeof(drvinfo
->version
));
1341 strlcpy(drvinfo
->bus_info
, pci_name(to_pci_dev(dev
->dev
.parent
)),
1342 sizeof(drvinfo
->bus_info
));
1343 snprintf(drvinfo
->fw_version
, sizeof(drvinfo
->fw_version
),
1344 "%u.%u.%u.%u, TP %u.%u.%u.%u",
1345 FW_HDR_FW_VER_MAJOR_G(adapter
->params
.dev
.fwrev
),
1346 FW_HDR_FW_VER_MINOR_G(adapter
->params
.dev
.fwrev
),
1347 FW_HDR_FW_VER_MICRO_G(adapter
->params
.dev
.fwrev
),
1348 FW_HDR_FW_VER_BUILD_G(adapter
->params
.dev
.fwrev
),
1349 FW_HDR_FW_VER_MAJOR_G(adapter
->params
.dev
.tprev
),
1350 FW_HDR_FW_VER_MINOR_G(adapter
->params
.dev
.tprev
),
1351 FW_HDR_FW_VER_MICRO_G(adapter
->params
.dev
.tprev
),
1352 FW_HDR_FW_VER_BUILD_G(adapter
->params
.dev
.tprev
));
1356 * Return current adapter message level.
1358 static u32
cxgb4vf_get_msglevel(struct net_device
*dev
)
1360 return netdev2adap(dev
)->msg_enable
;
1364 * Set current adapter message level.
1366 static void cxgb4vf_set_msglevel(struct net_device
*dev
, u32 msglevel
)
1368 netdev2adap(dev
)->msg_enable
= msglevel
;
1372 * Return the device's current Queue Set ring size parameters along with the
1373 * allowed maximum values. Since ethtool doesn't understand the concept of
1374 * multi-queue devices, we just return the current values associated with the
1377 static void cxgb4vf_get_ringparam(struct net_device
*dev
,
1378 struct ethtool_ringparam
*rp
)
1380 const struct port_info
*pi
= netdev_priv(dev
);
1381 const struct sge
*s
= &pi
->adapter
->sge
;
1383 rp
->rx_max_pending
= MAX_RX_BUFFERS
;
1384 rp
->rx_mini_max_pending
= MAX_RSPQ_ENTRIES
;
1385 rp
->rx_jumbo_max_pending
= 0;
1386 rp
->tx_max_pending
= MAX_TXQ_ENTRIES
;
1388 rp
->rx_pending
= s
->ethrxq
[pi
->first_qset
].fl
.size
- MIN_FL_RESID
;
1389 rp
->rx_mini_pending
= s
->ethrxq
[pi
->first_qset
].rspq
.size
;
1390 rp
->rx_jumbo_pending
= 0;
1391 rp
->tx_pending
= s
->ethtxq
[pi
->first_qset
].q
.size
;
1395 * Set the Queue Set ring size parameters for the device. Again, since
1396 * ethtool doesn't allow for the concept of multiple queues per device, we'll
1397 * apply these new values across all of the Queue Sets associated with the
1398 * device -- after vetting them of course!
1400 static int cxgb4vf_set_ringparam(struct net_device
*dev
,
1401 struct ethtool_ringparam
*rp
)
1403 const struct port_info
*pi
= netdev_priv(dev
);
1404 struct adapter
*adapter
= pi
->adapter
;
1405 struct sge
*s
= &adapter
->sge
;
1408 if (rp
->rx_pending
> MAX_RX_BUFFERS
||
1409 rp
->rx_jumbo_pending
||
1410 rp
->tx_pending
> MAX_TXQ_ENTRIES
||
1411 rp
->rx_mini_pending
> MAX_RSPQ_ENTRIES
||
1412 rp
->rx_mini_pending
< MIN_RSPQ_ENTRIES
||
1413 rp
->rx_pending
< MIN_FL_ENTRIES
||
1414 rp
->tx_pending
< MIN_TXQ_ENTRIES
)
1417 if (adapter
->flags
& FULL_INIT_DONE
)
1420 for (qs
= pi
->first_qset
; qs
< pi
->first_qset
+ pi
->nqsets
; qs
++) {
1421 s
->ethrxq
[qs
].fl
.size
= rp
->rx_pending
+ MIN_FL_RESID
;
1422 s
->ethrxq
[qs
].rspq
.size
= rp
->rx_mini_pending
;
1423 s
->ethtxq
[qs
].q
.size
= rp
->tx_pending
;
1429 * Return the interrupt holdoff timer and count for the first Queue Set on the
1430 * device. Our extension ioctl() (the cxgbtool interface) allows the
1431 * interrupt holdoff timer to be read on all of the device's Queue Sets.
1433 static int cxgb4vf_get_coalesce(struct net_device
*dev
,
1434 struct ethtool_coalesce
*coalesce
)
1436 const struct port_info
*pi
= netdev_priv(dev
);
1437 const struct adapter
*adapter
= pi
->adapter
;
1438 const struct sge_rspq
*rspq
= &adapter
->sge
.ethrxq
[pi
->first_qset
].rspq
;
1440 coalesce
->rx_coalesce_usecs
= qtimer_val(adapter
, rspq
);
1441 coalesce
->rx_max_coalesced_frames
=
1442 ((rspq
->intr_params
& QINTR_CNT_EN
)
1443 ? adapter
->sge
.counter_val
[rspq
->pktcnt_idx
]
1449 * Set the RX interrupt holdoff timer and count for the first Queue Set on the
1450 * interface. Our extension ioctl() (the cxgbtool interface) allows us to set
1451 * the interrupt holdoff timer on any of the device's Queue Sets.
1453 static int cxgb4vf_set_coalesce(struct net_device
*dev
,
1454 struct ethtool_coalesce
*coalesce
)
1456 const struct port_info
*pi
= netdev_priv(dev
);
1457 struct adapter
*adapter
= pi
->adapter
;
1459 return set_rxq_intr_params(adapter
,
1460 &adapter
->sge
.ethrxq
[pi
->first_qset
].rspq
,
1461 coalesce
->rx_coalesce_usecs
,
1462 coalesce
->rx_max_coalesced_frames
);
1466 * Report current port link pause parameter settings.
1468 static void cxgb4vf_get_pauseparam(struct net_device
*dev
,
1469 struct ethtool_pauseparam
*pauseparam
)
1471 struct port_info
*pi
= netdev_priv(dev
);
1473 pauseparam
->autoneg
= (pi
->link_cfg
.requested_fc
& PAUSE_AUTONEG
) != 0;
1474 pauseparam
->rx_pause
= (pi
->link_cfg
.fc
& PAUSE_RX
) != 0;
1475 pauseparam
->tx_pause
= (pi
->link_cfg
.fc
& PAUSE_TX
) != 0;
1479 * Identify the port by blinking the port's LED.
1481 static int cxgb4vf_phys_id(struct net_device
*dev
,
1482 enum ethtool_phys_id_state state
)
1485 struct port_info
*pi
= netdev_priv(dev
);
1487 if (state
== ETHTOOL_ID_ACTIVE
)
1489 else if (state
== ETHTOOL_ID_INACTIVE
)
1494 return t4vf_identify_port(pi
->adapter
, pi
->viid
, val
);
1498 * Port stats maintained per queue of the port.
1500 struct queue_port_stats
{
1511 * Strings for the ETH_SS_STATS statistics set ("ethtool -S"). Note that
1512 * these need to match the order of statistics returned by
1513 * t4vf_get_port_stats().
1515 static const char stats_strings
[][ETH_GSTRING_LEN
] = {
1517 * These must match the layout of the t4vf_port_stats structure.
1519 "TxBroadcastBytes ",
1520 "TxBroadcastFrames ",
1521 "TxMulticastBytes ",
1522 "TxMulticastFrames ",
1528 "RxBroadcastBytes ",
1529 "RxBroadcastFrames ",
1530 "RxMulticastBytes ",
1531 "RxMulticastFrames ",
1537 * These are accumulated per-queue statistics and must match the
1538 * order of the fields in the queue_port_stats structure.
1550 * Return the number of statistics in the specified statistics set.
1552 static int cxgb4vf_get_sset_count(struct net_device
*dev
, int sset
)
1556 return ARRAY_SIZE(stats_strings
);
1564 * Return the strings for the specified statistics set.
1566 static void cxgb4vf_get_strings(struct net_device
*dev
,
1572 memcpy(data
, stats_strings
, sizeof(stats_strings
));
1578 * Small utility routine to accumulate queue statistics across the queues of
1581 static void collect_sge_port_stats(const struct adapter
*adapter
,
1582 const struct port_info
*pi
,
1583 struct queue_port_stats
*stats
)
1585 const struct sge_eth_txq
*txq
= &adapter
->sge
.ethtxq
[pi
->first_qset
];
1586 const struct sge_eth_rxq
*rxq
= &adapter
->sge
.ethrxq
[pi
->first_qset
];
1589 memset(stats
, 0, sizeof(*stats
));
1590 for (qs
= 0; qs
< pi
->nqsets
; qs
++, rxq
++, txq
++) {
1591 stats
->tso
+= txq
->tso
;
1592 stats
->tx_csum
+= txq
->tx_cso
;
1593 stats
->rx_csum
+= rxq
->stats
.rx_cso
;
1594 stats
->vlan_ex
+= rxq
->stats
.vlan_ex
;
1595 stats
->vlan_ins
+= txq
->vlan_ins
;
1596 stats
->lro_pkts
+= rxq
->stats
.lro_pkts
;
1597 stats
->lro_merged
+= rxq
->stats
.lro_merged
;
1602 * Return the ETH_SS_STATS statistics set.
1604 static void cxgb4vf_get_ethtool_stats(struct net_device
*dev
,
1605 struct ethtool_stats
*stats
,
1608 struct port_info
*pi
= netdev2pinfo(dev
);
1609 struct adapter
*adapter
= pi
->adapter
;
1610 int err
= t4vf_get_port_stats(adapter
, pi
->pidx
,
1611 (struct t4vf_port_stats
*)data
);
1613 memset(data
, 0, sizeof(struct t4vf_port_stats
));
1615 data
+= sizeof(struct t4vf_port_stats
) / sizeof(u64
);
1616 collect_sge_port_stats(adapter
, pi
, (struct queue_port_stats
*)data
);
1620 * Return the size of our register map.
1622 static int cxgb4vf_get_regs_len(struct net_device
*dev
)
1624 return T4VF_REGMAP_SIZE
;
1628 * Dump a block of registers, start to end inclusive, into a buffer.
1630 static void reg_block_dump(struct adapter
*adapter
, void *regbuf
,
1631 unsigned int start
, unsigned int end
)
1633 u32
*bp
= regbuf
+ start
- T4VF_REGMAP_START
;
1635 for ( ; start
<= end
; start
+= sizeof(u32
)) {
1637 * Avoid reading the Mailbox Control register since that
1638 * can trigger a Mailbox Ownership Arbitration cycle and
1639 * interfere with communication with the firmware.
1641 if (start
== T4VF_CIM_BASE_ADDR
+ CIM_VF_EXT_MAILBOX_CTRL
)
1644 *bp
++ = t4_read_reg(adapter
, start
);
1649 * Copy our entire register map into the provided buffer.
1651 static void cxgb4vf_get_regs(struct net_device
*dev
,
1652 struct ethtool_regs
*regs
,
1655 struct adapter
*adapter
= netdev2adap(dev
);
1657 regs
->version
= mk_adap_vers(adapter
);
1660 * Fill in register buffer with our register map.
1662 memset(regbuf
, 0, T4VF_REGMAP_SIZE
);
1664 reg_block_dump(adapter
, regbuf
,
1665 T4VF_SGE_BASE_ADDR
+ T4VF_MOD_MAP_SGE_FIRST
,
1666 T4VF_SGE_BASE_ADDR
+ T4VF_MOD_MAP_SGE_LAST
);
1667 reg_block_dump(adapter
, regbuf
,
1668 T4VF_MPS_BASE_ADDR
+ T4VF_MOD_MAP_MPS_FIRST
,
1669 T4VF_MPS_BASE_ADDR
+ T4VF_MOD_MAP_MPS_LAST
);
1671 /* T5 adds new registers in the PL Register map.
1673 reg_block_dump(adapter
, regbuf
,
1674 T4VF_PL_BASE_ADDR
+ T4VF_MOD_MAP_PL_FIRST
,
1675 T4VF_PL_BASE_ADDR
+ (is_t4(adapter
->params
.chip
)
1676 ? A_PL_VF_WHOAMI
: A_PL_VF_REVISION
));
1677 reg_block_dump(adapter
, regbuf
,
1678 T4VF_CIM_BASE_ADDR
+ T4VF_MOD_MAP_CIM_FIRST
,
1679 T4VF_CIM_BASE_ADDR
+ T4VF_MOD_MAP_CIM_LAST
);
1681 reg_block_dump(adapter
, regbuf
,
1682 T4VF_MBDATA_BASE_ADDR
+ T4VF_MBDATA_FIRST
,
1683 T4VF_MBDATA_BASE_ADDR
+ T4VF_MBDATA_LAST
);
1687 * Report current Wake On LAN settings.
1689 static void cxgb4vf_get_wol(struct net_device
*dev
,
1690 struct ethtool_wolinfo
*wol
)
1694 memset(&wol
->sopass
, 0, sizeof(wol
->sopass
));
1698 * TCP Segmentation Offload flags which we support.
1700 #define TSO_FLAGS (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)
1702 static const struct ethtool_ops cxgb4vf_ethtool_ops
= {
1703 .get_settings
= cxgb4vf_get_settings
,
1704 .get_drvinfo
= cxgb4vf_get_drvinfo
,
1705 .get_msglevel
= cxgb4vf_get_msglevel
,
1706 .set_msglevel
= cxgb4vf_set_msglevel
,
1707 .get_ringparam
= cxgb4vf_get_ringparam
,
1708 .set_ringparam
= cxgb4vf_set_ringparam
,
1709 .get_coalesce
= cxgb4vf_get_coalesce
,
1710 .set_coalesce
= cxgb4vf_set_coalesce
,
1711 .get_pauseparam
= cxgb4vf_get_pauseparam
,
1712 .get_link
= ethtool_op_get_link
,
1713 .get_strings
= cxgb4vf_get_strings
,
1714 .set_phys_id
= cxgb4vf_phys_id
,
1715 .get_sset_count
= cxgb4vf_get_sset_count
,
1716 .get_ethtool_stats
= cxgb4vf_get_ethtool_stats
,
1717 .get_regs_len
= cxgb4vf_get_regs_len
,
1718 .get_regs
= cxgb4vf_get_regs
,
1719 .get_wol
= cxgb4vf_get_wol
,
1723 * /sys/kernel/debug/cxgb4vf support code and data.
1724 * ================================================
1728 * Show SGE Queue Set information. We display QPL Queues Sets per line.
1732 static int sge_qinfo_show(struct seq_file
*seq
, void *v
)
1734 struct adapter
*adapter
= seq
->private;
1735 int eth_entries
= DIV_ROUND_UP(adapter
->sge
.ethqsets
, QPL
);
1736 int qs
, r
= (uintptr_t)v
- 1;
1739 seq_putc(seq
, '\n');
1741 #define S3(fmt_spec, s, v) \
1743 seq_printf(seq, "%-12s", s); \
1744 for (qs = 0; qs < n; ++qs) \
1745 seq_printf(seq, " %16" fmt_spec, v); \
1746 seq_putc(seq, '\n'); \
1748 #define S(s, v) S3("s", s, v)
1749 #define T(s, v) S3("u", s, txq[qs].v)
1750 #define R(s, v) S3("u", s, rxq[qs].v)
1752 if (r
< eth_entries
) {
1753 const struct sge_eth_rxq
*rxq
= &adapter
->sge
.ethrxq
[r
* QPL
];
1754 const struct sge_eth_txq
*txq
= &adapter
->sge
.ethtxq
[r
* QPL
];
1755 int n
= min(QPL
, adapter
->sge
.ethqsets
- QPL
* r
);
1757 S("QType:", "Ethernet");
1759 (rxq
[qs
].rspq
.netdev
1760 ? rxq
[qs
].rspq
.netdev
->name
1763 (rxq
[qs
].rspq
.netdev
1764 ? ((struct port_info
*)
1765 netdev_priv(rxq
[qs
].rspq
.netdev
))->port_id
1767 T("TxQ ID:", q
.abs_id
);
1768 T("TxQ size:", q
.size
);
1769 T("TxQ inuse:", q
.in_use
);
1770 T("TxQ PIdx:", q
.pidx
);
1771 T("TxQ CIdx:", q
.cidx
);
1772 R("RspQ ID:", rspq
.abs_id
);
1773 R("RspQ size:", rspq
.size
);
1774 R("RspQE size:", rspq
.iqe_len
);
1775 S3("u", "Intr delay:", qtimer_val(adapter
, &rxq
[qs
].rspq
));
1776 S3("u", "Intr pktcnt:",
1777 adapter
->sge
.counter_val
[rxq
[qs
].rspq
.pktcnt_idx
]);
1778 R("RspQ CIdx:", rspq
.cidx
);
1779 R("RspQ Gen:", rspq
.gen
);
1780 R("FL ID:", fl
.abs_id
);
1781 R("FL size:", fl
.size
- MIN_FL_RESID
);
1782 R("FL avail:", fl
.avail
);
1783 R("FL PIdx:", fl
.pidx
);
1784 R("FL CIdx:", fl
.cidx
);
1790 const struct sge_rspq
*evtq
= &adapter
->sge
.fw_evtq
;
1792 seq_printf(seq
, "%-12s %16s\n", "QType:", "FW event queue");
1793 seq_printf(seq
, "%-12s %16u\n", "RspQ ID:", evtq
->abs_id
);
1794 seq_printf(seq
, "%-12s %16u\n", "Intr delay:",
1795 qtimer_val(adapter
, evtq
));
1796 seq_printf(seq
, "%-12s %16u\n", "Intr pktcnt:",
1797 adapter
->sge
.counter_val
[evtq
->pktcnt_idx
]);
1798 seq_printf(seq
, "%-12s %16u\n", "RspQ Cidx:", evtq
->cidx
);
1799 seq_printf(seq
, "%-12s %16u\n", "RspQ Gen:", evtq
->gen
);
1800 } else if (r
== 1) {
1801 const struct sge_rspq
*intrq
= &adapter
->sge
.intrq
;
1803 seq_printf(seq
, "%-12s %16s\n", "QType:", "Interrupt Queue");
1804 seq_printf(seq
, "%-12s %16u\n", "RspQ ID:", intrq
->abs_id
);
1805 seq_printf(seq
, "%-12s %16u\n", "Intr delay:",
1806 qtimer_val(adapter
, intrq
));
1807 seq_printf(seq
, "%-12s %16u\n", "Intr pktcnt:",
1808 adapter
->sge
.counter_val
[intrq
->pktcnt_idx
]);
1809 seq_printf(seq
, "%-12s %16u\n", "RspQ Cidx:", intrq
->cidx
);
1810 seq_printf(seq
, "%-12s %16u\n", "RspQ Gen:", intrq
->gen
);
1822 * Return the number of "entries" in our "file". We group the multi-Queue
1823 * sections with QPL Queue Sets per "entry". The sections of the output are:
1825 * Ethernet RX/TX Queue Sets
1826 * Firmware Event Queue
1827 * Forwarded Interrupt Queue (if in MSI mode)
1829 static int sge_queue_entries(const struct adapter
*adapter
)
1831 return DIV_ROUND_UP(adapter
->sge
.ethqsets
, QPL
) + 1 +
1832 ((adapter
->flags
& USING_MSI
) != 0);
1835 static void *sge_queue_start(struct seq_file
*seq
, loff_t
*pos
)
1837 int entries
= sge_queue_entries(seq
->private);
1839 return *pos
< entries
? (void *)((uintptr_t)*pos
+ 1) : NULL
;
1842 static void sge_queue_stop(struct seq_file
*seq
, void *v
)
1846 static void *sge_queue_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
1848 int entries
= sge_queue_entries(seq
->private);
1851 return *pos
< entries
? (void *)((uintptr_t)*pos
+ 1) : NULL
;
1854 static const struct seq_operations sge_qinfo_seq_ops
= {
1855 .start
= sge_queue_start
,
1856 .next
= sge_queue_next
,
1857 .stop
= sge_queue_stop
,
1858 .show
= sge_qinfo_show
1861 static int sge_qinfo_open(struct inode
*inode
, struct file
*file
)
1863 int res
= seq_open(file
, &sge_qinfo_seq_ops
);
1866 struct seq_file
*seq
= file
->private_data
;
1867 seq
->private = inode
->i_private
;
1872 static const struct file_operations sge_qinfo_debugfs_fops
= {
1873 .owner
= THIS_MODULE
,
1874 .open
= sge_qinfo_open
,
1876 .llseek
= seq_lseek
,
1877 .release
= seq_release
,
1881 * Show SGE Queue Set statistics. We display QPL Queues Sets per line.
1885 static int sge_qstats_show(struct seq_file
*seq
, void *v
)
1887 struct adapter
*adapter
= seq
->private;
1888 int eth_entries
= DIV_ROUND_UP(adapter
->sge
.ethqsets
, QPL
);
1889 int qs
, r
= (uintptr_t)v
- 1;
1892 seq_putc(seq
, '\n');
1894 #define S3(fmt, s, v) \
1896 seq_printf(seq, "%-16s", s); \
1897 for (qs = 0; qs < n; ++qs) \
1898 seq_printf(seq, " %8" fmt, v); \
1899 seq_putc(seq, '\n'); \
1901 #define S(s, v) S3("s", s, v)
1903 #define T3(fmt, s, v) S3(fmt, s, txq[qs].v)
1904 #define T(s, v) T3("lu", s, v)
1906 #define R3(fmt, s, v) S3(fmt, s, rxq[qs].v)
1907 #define R(s, v) R3("lu", s, v)
1909 if (r
< eth_entries
) {
1910 const struct sge_eth_rxq
*rxq
= &adapter
->sge
.ethrxq
[r
* QPL
];
1911 const struct sge_eth_txq
*txq
= &adapter
->sge
.ethtxq
[r
* QPL
];
1912 int n
= min(QPL
, adapter
->sge
.ethqsets
- QPL
* r
);
1914 S("QType:", "Ethernet");
1916 (rxq
[qs
].rspq
.netdev
1917 ? rxq
[qs
].rspq
.netdev
->name
1919 R3("u", "RspQNullInts:", rspq
.unhandled_irqs
);
1920 R("RxPackets:", stats
.pkts
);
1921 R("RxCSO:", stats
.rx_cso
);
1922 R("VLANxtract:", stats
.vlan_ex
);
1923 R("LROmerged:", stats
.lro_merged
);
1924 R("LROpackets:", stats
.lro_pkts
);
1925 R("RxDrops:", stats
.rx_drops
);
1927 T("TxCSO:", tx_cso
);
1928 T("VLANins:", vlan_ins
);
1929 T("TxQFull:", q
.stops
);
1930 T("TxQRestarts:", q
.restarts
);
1931 T("TxMapErr:", mapping_err
);
1932 R("FLAllocErr:", fl
.alloc_failed
);
1933 R("FLLrgAlcErr:", fl
.large_alloc_failed
);
1934 R("FLStarving:", fl
.starving
);
1940 const struct sge_rspq
*evtq
= &adapter
->sge
.fw_evtq
;
1942 seq_printf(seq
, "%-8s %16s\n", "QType:", "FW event queue");
1943 seq_printf(seq
, "%-16s %8u\n", "RspQNullInts:",
1944 evtq
->unhandled_irqs
);
1945 seq_printf(seq
, "%-16s %8u\n", "RspQ CIdx:", evtq
->cidx
);
1946 seq_printf(seq
, "%-16s %8u\n", "RspQ Gen:", evtq
->gen
);
1947 } else if (r
== 1) {
1948 const struct sge_rspq
*intrq
= &adapter
->sge
.intrq
;
1950 seq_printf(seq
, "%-8s %16s\n", "QType:", "Interrupt Queue");
1951 seq_printf(seq
, "%-16s %8u\n", "RspQNullInts:",
1952 intrq
->unhandled_irqs
);
1953 seq_printf(seq
, "%-16s %8u\n", "RspQ CIdx:", intrq
->cidx
);
1954 seq_printf(seq
, "%-16s %8u\n", "RspQ Gen:", intrq
->gen
);
1968 * Return the number of "entries" in our "file". We group the multi-Queue
1969 * sections with QPL Queue Sets per "entry". The sections of the output are:
1971 * Ethernet RX/TX Queue Sets
1972 * Firmware Event Queue
1973 * Forwarded Interrupt Queue (if in MSI mode)
1975 static int sge_qstats_entries(const struct adapter
*adapter
)
1977 return DIV_ROUND_UP(adapter
->sge
.ethqsets
, QPL
) + 1 +
1978 ((adapter
->flags
& USING_MSI
) != 0);
1981 static void *sge_qstats_start(struct seq_file
*seq
, loff_t
*pos
)
1983 int entries
= sge_qstats_entries(seq
->private);
1985 return *pos
< entries
? (void *)((uintptr_t)*pos
+ 1) : NULL
;
1988 static void sge_qstats_stop(struct seq_file
*seq
, void *v
)
1992 static void *sge_qstats_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
1994 int entries
= sge_qstats_entries(seq
->private);
1997 return *pos
< entries
? (void *)((uintptr_t)*pos
+ 1) : NULL
;
2000 static const struct seq_operations sge_qstats_seq_ops
= {
2001 .start
= sge_qstats_start
,
2002 .next
= sge_qstats_next
,
2003 .stop
= sge_qstats_stop
,
2004 .show
= sge_qstats_show
2007 static int sge_qstats_open(struct inode
*inode
, struct file
*file
)
2009 int res
= seq_open(file
, &sge_qstats_seq_ops
);
2012 struct seq_file
*seq
= file
->private_data
;
2013 seq
->private = inode
->i_private
;
2018 static const struct file_operations sge_qstats_proc_fops
= {
2019 .owner
= THIS_MODULE
,
2020 .open
= sge_qstats_open
,
2022 .llseek
= seq_lseek
,
2023 .release
= seq_release
,
2027 * Show PCI-E SR-IOV Virtual Function Resource Limits.
2029 static int resources_show(struct seq_file
*seq
, void *v
)
2031 struct adapter
*adapter
= seq
->private;
2032 struct vf_resources
*vfres
= &adapter
->params
.vfres
;
2034 #define S(desc, fmt, var) \
2035 seq_printf(seq, "%-60s " fmt "\n", \
2036 desc " (" #var "):", vfres->var)
2038 S("Virtual Interfaces", "%d", nvi
);
2039 S("Egress Queues", "%d", neq
);
2040 S("Ethernet Control", "%d", nethctrl
);
2041 S("Ingress Queues/w Free Lists/Interrupts", "%d", niqflint
);
2042 S("Ingress Queues", "%d", niq
);
2043 S("Traffic Class", "%d", tc
);
2044 S("Port Access Rights Mask", "%#x", pmask
);
2045 S("MAC Address Filters", "%d", nexactf
);
2046 S("Firmware Command Read Capabilities", "%#x", r_caps
);
2047 S("Firmware Command Write/Execute Capabilities", "%#x", wx_caps
);
2054 static int resources_open(struct inode
*inode
, struct file
*file
)
2056 return single_open(file
, resources_show
, inode
->i_private
);
2059 static const struct file_operations resources_proc_fops
= {
2060 .owner
= THIS_MODULE
,
2061 .open
= resources_open
,
2063 .llseek
= seq_lseek
,
2064 .release
= single_release
,
2068 * Show Virtual Interfaces.
2070 static int interfaces_show(struct seq_file
*seq
, void *v
)
2072 if (v
== SEQ_START_TOKEN
) {
2073 seq_puts(seq
, "Interface Port VIID\n");
2075 struct adapter
*adapter
= seq
->private;
2076 int pidx
= (uintptr_t)v
- 2;
2077 struct net_device
*dev
= adapter
->port
[pidx
];
2078 struct port_info
*pi
= netdev_priv(dev
);
2080 seq_printf(seq
, "%9s %4d %#5x\n",
2081 dev
->name
, pi
->port_id
, pi
->viid
);
2086 static inline void *interfaces_get_idx(struct adapter
*adapter
, loff_t pos
)
2088 return pos
<= adapter
->params
.nports
2089 ? (void *)(uintptr_t)(pos
+ 1)
2093 static void *interfaces_start(struct seq_file
*seq
, loff_t
*pos
)
2096 ? interfaces_get_idx(seq
->private, *pos
)
2100 static void *interfaces_next(struct seq_file
*seq
, void *v
, loff_t
*pos
)
2103 return interfaces_get_idx(seq
->private, *pos
);
2106 static void interfaces_stop(struct seq_file
*seq
, void *v
)
2110 static const struct seq_operations interfaces_seq_ops
= {
2111 .start
= interfaces_start
,
2112 .next
= interfaces_next
,
2113 .stop
= interfaces_stop
,
2114 .show
= interfaces_show
2117 static int interfaces_open(struct inode
*inode
, struct file
*file
)
2119 int res
= seq_open(file
, &interfaces_seq_ops
);
2122 struct seq_file
*seq
= file
->private_data
;
2123 seq
->private = inode
->i_private
;
2128 static const struct file_operations interfaces_proc_fops
= {
2129 .owner
= THIS_MODULE
,
2130 .open
= interfaces_open
,
2132 .llseek
= seq_lseek
,
2133 .release
= seq_release
,
2137 * /sys/kernel/debugfs/cxgb4vf/ files list.
2139 struct cxgb4vf_debugfs_entry
{
2140 const char *name
; /* name of debugfs node */
2141 umode_t mode
; /* file system mode */
2142 const struct file_operations
*fops
;
2145 static struct cxgb4vf_debugfs_entry debugfs_files
[] = {
2146 { "sge_qinfo", S_IRUGO
, &sge_qinfo_debugfs_fops
},
2147 { "sge_qstats", S_IRUGO
, &sge_qstats_proc_fops
},
2148 { "resources", S_IRUGO
, &resources_proc_fops
},
2149 { "interfaces", S_IRUGO
, &interfaces_proc_fops
},
2153 * Module and device initialization and cleanup code.
2154 * ==================================================
2158 * Set up out /sys/kernel/debug/cxgb4vf sub-nodes. We assume that the
2159 * directory (debugfs_root) has already been set up.
2161 static int setup_debugfs(struct adapter
*adapter
)
2165 BUG_ON(IS_ERR_OR_NULL(adapter
->debugfs_root
));
2168 * Debugfs support is best effort.
2170 for (i
= 0; i
< ARRAY_SIZE(debugfs_files
); i
++)
2171 (void)debugfs_create_file(debugfs_files
[i
].name
,
2172 debugfs_files
[i
].mode
,
2173 adapter
->debugfs_root
,
2175 debugfs_files
[i
].fops
);
2181 * Tear down the /sys/kernel/debug/cxgb4vf sub-nodes created above. We leave
2182 * it to our caller to tear down the directory (debugfs_root).
2184 static void cleanup_debugfs(struct adapter
*adapter
)
2186 BUG_ON(IS_ERR_OR_NULL(adapter
->debugfs_root
));
2189 * Unlike our sister routine cleanup_proc(), we don't need to remove
2190 * individual entries because a call will be made to
2191 * debugfs_remove_recursive(). We just need to clean up any ancillary
2198 * Perform early "adapter" initialization. This is where we discover what
2199 * adapter parameters we're going to be using and initialize basic adapter
2202 static int adap_init0(struct adapter
*adapter
)
2204 struct vf_resources
*vfres
= &adapter
->params
.vfres
;
2205 struct sge_params
*sge_params
= &adapter
->params
.sge
;
2206 struct sge
*s
= &adapter
->sge
;
2207 unsigned int ethqsets
;
2212 * Wait for the device to become ready before proceeding ...
2214 err
= t4vf_wait_dev_ready(adapter
);
2216 dev_err(adapter
->pdev_dev
, "device didn't become ready:"
2222 * Some environments do not properly handle PCIE FLRs -- e.g. in Linux
2223 * 2.6.31 and later we can't call pci_reset_function() in order to
2224 * issue an FLR because of a self- deadlock on the device semaphore.
2225 * Meanwhile, the OS infrastructure doesn't issue FLRs in all the
2226 * cases where they're needed -- for instance, some versions of KVM
2227 * fail to reset "Assigned Devices" when the VM reboots. Therefore we
2228 * use the firmware based reset in order to reset any per function
2231 err
= t4vf_fw_reset(adapter
);
2233 dev_err(adapter
->pdev_dev
, "FW reset failed: err=%d\n", err
);
2238 * Grab basic operational parameters. These will predominantly have
2239 * been set up by the Physical Function Driver or will be hard coded
2240 * into the adapter. We just have to live with them ... Note that
2241 * we _must_ get our VPD parameters before our SGE parameters because
2242 * we need to know the adapter's core clock from the VPD in order to
2243 * properly decode the SGE Timer Values.
2245 err
= t4vf_get_dev_params(adapter
);
2247 dev_err(adapter
->pdev_dev
, "unable to retrieve adapter"
2248 " device parameters: err=%d\n", err
);
2251 err
= t4vf_get_vpd_params(adapter
);
2253 dev_err(adapter
->pdev_dev
, "unable to retrieve adapter"
2254 " VPD parameters: err=%d\n", err
);
2257 err
= t4vf_get_sge_params(adapter
);
2259 dev_err(adapter
->pdev_dev
, "unable to retrieve adapter"
2260 " SGE parameters: err=%d\n", err
);
2263 err
= t4vf_get_rss_glb_config(adapter
);
2265 dev_err(adapter
->pdev_dev
, "unable to retrieve adapter"
2266 " RSS parameters: err=%d\n", err
);
2269 if (adapter
->params
.rss
.mode
!=
2270 FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL
) {
2271 dev_err(adapter
->pdev_dev
, "unable to operate with global RSS"
2272 " mode %d\n", adapter
->params
.rss
.mode
);
2275 err
= t4vf_sge_init(adapter
);
2277 dev_err(adapter
->pdev_dev
, "unable to use adapter parameters:"
2282 /* If we're running on newer firmware, let it know that we're
2283 * prepared to deal with encapsulated CPL messages. Older
2284 * firmware won't understand this and we'll just get
2285 * unencapsulated messages ...
2287 param
= FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_PFVF
) |
2288 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_PFVF_CPLFW4MSG_ENCAP
);
2290 (void) t4vf_set_params(adapter
, 1, ¶m
, &val
);
2293 * Retrieve our RX interrupt holdoff timer values and counter
2294 * threshold values from the SGE parameters.
2296 s
->timer_val
[0] = core_ticks_to_us(adapter
,
2297 TIMERVALUE0_GET(sge_params
->sge_timer_value_0_and_1
));
2298 s
->timer_val
[1] = core_ticks_to_us(adapter
,
2299 TIMERVALUE1_GET(sge_params
->sge_timer_value_0_and_1
));
2300 s
->timer_val
[2] = core_ticks_to_us(adapter
,
2301 TIMERVALUE0_GET(sge_params
->sge_timer_value_2_and_3
));
2302 s
->timer_val
[3] = core_ticks_to_us(adapter
,
2303 TIMERVALUE1_GET(sge_params
->sge_timer_value_2_and_3
));
2304 s
->timer_val
[4] = core_ticks_to_us(adapter
,
2305 TIMERVALUE0_GET(sge_params
->sge_timer_value_4_and_5
));
2306 s
->timer_val
[5] = core_ticks_to_us(adapter
,
2307 TIMERVALUE1_GET(sge_params
->sge_timer_value_4_and_5
));
2310 THRESHOLD_0_GET(sge_params
->sge_ingress_rx_threshold
);
2312 THRESHOLD_1_GET(sge_params
->sge_ingress_rx_threshold
);
2314 THRESHOLD_2_GET(sge_params
->sge_ingress_rx_threshold
);
2316 THRESHOLD_3_GET(sge_params
->sge_ingress_rx_threshold
);
2319 * Grab our Virtual Interface resource allocation, extract the
2320 * features that we're interested in and do a bit of sanity testing on
2323 err
= t4vf_get_vfres(adapter
);
2325 dev_err(adapter
->pdev_dev
, "unable to get virtual interface"
2326 " resources: err=%d\n", err
);
2331 * The number of "ports" which we support is equal to the number of
2332 * Virtual Interfaces with which we've been provisioned.
2334 adapter
->params
.nports
= vfres
->nvi
;
2335 if (adapter
->params
.nports
> MAX_NPORTS
) {
2336 dev_warn(adapter
->pdev_dev
, "only using %d of %d allowed"
2337 " virtual interfaces\n", MAX_NPORTS
,
2338 adapter
->params
.nports
);
2339 adapter
->params
.nports
= MAX_NPORTS
;
2343 * We need to reserve a number of the ingress queues with Free List
2344 * and Interrupt capabilities for special interrupt purposes (like
2345 * asynchronous firmware messages, or forwarded interrupts if we're
2346 * using MSI). The rest of the FL/Intr-capable ingress queues will be
2347 * matched up one-for-one with Ethernet/Control egress queues in order
2348 * to form "Queue Sets" which will be aportioned between the "ports".
2349 * For each Queue Set, we'll need the ability to allocate two Egress
2350 * Contexts -- one for the Ingress Queue Free List and one for the TX
2353 ethqsets
= vfres
->niqflint
- INGQ_EXTRAS
;
2354 if (vfres
->nethctrl
!= ethqsets
) {
2355 dev_warn(adapter
->pdev_dev
, "unequal number of [available]"
2356 " ingress/egress queues (%d/%d); using minimum for"
2357 " number of Queue Sets\n", ethqsets
, vfres
->nethctrl
);
2358 ethqsets
= min(vfres
->nethctrl
, ethqsets
);
2360 if (vfres
->neq
< ethqsets
*2) {
2361 dev_warn(adapter
->pdev_dev
, "Not enough Egress Contexts (%d)"
2362 " to support Queue Sets (%d); reducing allowed Queue"
2363 " Sets\n", vfres
->neq
, ethqsets
);
2364 ethqsets
= vfres
->neq
/2;
2366 if (ethqsets
> MAX_ETH_QSETS
) {
2367 dev_warn(adapter
->pdev_dev
, "only using %d of %d allowed Queue"
2368 " Sets\n", MAX_ETH_QSETS
, adapter
->sge
.max_ethqsets
);
2369 ethqsets
= MAX_ETH_QSETS
;
2371 if (vfres
->niq
!= 0 || vfres
->neq
> ethqsets
*2) {
2372 dev_warn(adapter
->pdev_dev
, "unused resources niq/neq (%d/%d)"
2373 " ignored\n", vfres
->niq
, vfres
->neq
- ethqsets
*2);
2375 adapter
->sge
.max_ethqsets
= ethqsets
;
2378 * Check for various parameter sanity issues. Most checks simply
2379 * result in us using fewer resources than our provissioning but we
2380 * do need at least one "port" with which to work ...
2382 if (adapter
->sge
.max_ethqsets
< adapter
->params
.nports
) {
2383 dev_warn(adapter
->pdev_dev
, "only using %d of %d available"
2384 " virtual interfaces (too few Queue Sets)\n",
2385 adapter
->sge
.max_ethqsets
, adapter
->params
.nports
);
2386 adapter
->params
.nports
= adapter
->sge
.max_ethqsets
;
2388 if (adapter
->params
.nports
== 0) {
2389 dev_err(adapter
->pdev_dev
, "no virtual interfaces configured/"
2396 static inline void init_rspq(struct sge_rspq
*rspq
, u8 timer_idx
,
2397 u8 pkt_cnt_idx
, unsigned int size
,
2398 unsigned int iqe_size
)
2400 rspq
->intr_params
= (QINTR_TIMER_IDX(timer_idx
) |
2401 (pkt_cnt_idx
< SGE_NCOUNTERS
? QINTR_CNT_EN
: 0));
2402 rspq
->pktcnt_idx
= (pkt_cnt_idx
< SGE_NCOUNTERS
2405 rspq
->iqe_len
= iqe_size
;
2410 * Perform default configuration of DMA queues depending on the number and
2411 * type of ports we found and the number of available CPUs. Most settings can
2412 * be modified by the admin via ethtool and cxgbtool prior to the adapter
2413 * being brought up for the first time.
2415 static void cfg_queues(struct adapter
*adapter
)
2417 struct sge
*s
= &adapter
->sge
;
2418 int q10g
, n10g
, qidx
, pidx
, qs
;
2422 * We should not be called till we know how many Queue Sets we can
2423 * support. In particular, this means that we need to know what kind
2424 * of interrupts we'll be using ...
2426 BUG_ON((adapter
->flags
& (USING_MSIX
|USING_MSI
)) == 0);
2429 * Count the number of 10GbE Virtual Interfaces that we have.
2432 for_each_port(adapter
, pidx
)
2433 n10g
+= is_10g_port(&adap2pinfo(adapter
, pidx
)->link_cfg
);
2436 * We default to 1 queue per non-10G port and up to # of cores queues
2442 int n1g
= (adapter
->params
.nports
- n10g
);
2443 q10g
= (adapter
->sge
.max_ethqsets
- n1g
) / n10g
;
2444 if (q10g
> num_online_cpus())
2445 q10g
= num_online_cpus();
2449 * Allocate the "Queue Sets" to the various Virtual Interfaces.
2450 * The layout will be established in setup_sge_queues() when the
2451 * adapter is brough up for the first time.
2454 for_each_port(adapter
, pidx
) {
2455 struct port_info
*pi
= adap2pinfo(adapter
, pidx
);
2457 pi
->first_qset
= qidx
;
2458 pi
->nqsets
= is_x_10g_port(&pi
->link_cfg
) ? q10g
: 1;
2464 * The Ingress Queue Entry Size for our various Response Queues needs
2465 * to be big enough to accommodate the largest message we can receive
2466 * from the chip/firmware; which is 64 bytes ...
2471 * Set up default Queue Set parameters ... Start off with the
2472 * shortest interrupt holdoff timer.
2474 for (qs
= 0; qs
< s
->max_ethqsets
; qs
++) {
2475 struct sge_eth_rxq
*rxq
= &s
->ethrxq
[qs
];
2476 struct sge_eth_txq
*txq
= &s
->ethtxq
[qs
];
2478 init_rspq(&rxq
->rspq
, 0, 0, 1024, iqe_size
);
2484 * The firmware event queue is used for link state changes and
2485 * notifications of TX DMA completions.
2487 init_rspq(&s
->fw_evtq
, SGE_TIMER_RSTRT_CNTR
, 0, 512, iqe_size
);
2490 * The forwarded interrupt queue is used when we're in MSI interrupt
2491 * mode. In this mode all interrupts associated with RX queues will
2492 * be forwarded to a single queue which we'll associate with our MSI
2493 * interrupt vector. The messages dropped in the forwarded interrupt
2494 * queue will indicate which ingress queue needs servicing ... This
2495 * queue needs to be large enough to accommodate all of the ingress
2496 * queues which are forwarding their interrupt (+1 to prevent the PIDX
2497 * from equalling the CIDX if every ingress queue has an outstanding
2498 * interrupt). The queue doesn't need to be any larger because no
2499 * ingress queue will ever have more than one outstanding interrupt at
2502 init_rspq(&s
->intrq
, SGE_TIMER_RSTRT_CNTR
, 0, MSIX_ENTRIES
+ 1,
2507 * Reduce the number of Ethernet queues across all ports to at most n.
2508 * n provides at least one queue per port.
2510 static void reduce_ethqs(struct adapter
*adapter
, int n
)
2513 struct port_info
*pi
;
2516 * While we have too many active Ether Queue Sets, interate across the
2517 * "ports" and reduce their individual Queue Set allocations.
2519 BUG_ON(n
< adapter
->params
.nports
);
2520 while (n
< adapter
->sge
.ethqsets
)
2521 for_each_port(adapter
, i
) {
2522 pi
= adap2pinfo(adapter
, i
);
2523 if (pi
->nqsets
> 1) {
2525 adapter
->sge
.ethqsets
--;
2526 if (adapter
->sge
.ethqsets
<= n
)
2532 * Reassign the starting Queue Sets for each of the "ports" ...
2535 for_each_port(adapter
, i
) {
2536 pi
= adap2pinfo(adapter
, i
);
2543 * We need to grab enough MSI-X vectors to cover our interrupt needs. Ideally
2544 * we get a separate MSI-X vector for every "Queue Set" plus any extras we
2545 * need. Minimally we need one for every Virtual Interface plus those needed
2546 * for our "extras". Note that this process may lower the maximum number of
2547 * allowed Queue Sets ...
2549 static int enable_msix(struct adapter
*adapter
)
2551 int i
, want
, need
, nqsets
;
2552 struct msix_entry entries
[MSIX_ENTRIES
];
2553 struct sge
*s
= &adapter
->sge
;
2555 for (i
= 0; i
< MSIX_ENTRIES
; ++i
)
2556 entries
[i
].entry
= i
;
2559 * We _want_ enough MSI-X interrupts to cover all of our "Queue Sets"
2560 * plus those needed for our "extras" (for example, the firmware
2561 * message queue). We _need_ at least one "Queue Set" per Virtual
2562 * Interface plus those needed for our "extras". So now we get to see
2563 * if the song is right ...
2565 want
= s
->max_ethqsets
+ MSIX_EXTRAS
;
2566 need
= adapter
->params
.nports
+ MSIX_EXTRAS
;
2568 want
= pci_enable_msix_range(adapter
->pdev
, entries
, need
, want
);
2572 nqsets
= want
- MSIX_EXTRAS
;
2573 if (nqsets
< s
->max_ethqsets
) {
2574 dev_warn(adapter
->pdev_dev
, "only enough MSI-X vectors"
2575 " for %d Queue Sets\n", nqsets
);
2576 s
->max_ethqsets
= nqsets
;
2577 if (nqsets
< s
->ethqsets
)
2578 reduce_ethqs(adapter
, nqsets
);
2580 for (i
= 0; i
< want
; ++i
)
2581 adapter
->msix_info
[i
].vec
= entries
[i
].vector
;
2586 static const struct net_device_ops cxgb4vf_netdev_ops
= {
2587 .ndo_open
= cxgb4vf_open
,
2588 .ndo_stop
= cxgb4vf_stop
,
2589 .ndo_start_xmit
= t4vf_eth_xmit
,
2590 .ndo_get_stats
= cxgb4vf_get_stats
,
2591 .ndo_set_rx_mode
= cxgb4vf_set_rxmode
,
2592 .ndo_set_mac_address
= cxgb4vf_set_mac_addr
,
2593 .ndo_validate_addr
= eth_validate_addr
,
2594 .ndo_do_ioctl
= cxgb4vf_do_ioctl
,
2595 .ndo_change_mtu
= cxgb4vf_change_mtu
,
2596 .ndo_fix_features
= cxgb4vf_fix_features
,
2597 .ndo_set_features
= cxgb4vf_set_features
,
2598 #ifdef CONFIG_NET_POLL_CONTROLLER
2599 .ndo_poll_controller
= cxgb4vf_poll_controller
,
2604 * "Probe" a device: initialize a device and construct all kernel and driver
2605 * state needed to manage the device. This routine is called "init_one" in
2608 static int cxgb4vf_pci_probe(struct pci_dev
*pdev
,
2609 const struct pci_device_id
*ent
)
2614 struct adapter
*adapter
;
2615 struct port_info
*pi
;
2616 struct net_device
*netdev
;
2619 * Print our driver banner the first time we're called to initialize a
2622 pr_info_once("%s - version %s\n", DRV_DESC
, DRV_VERSION
);
2625 * Initialize generic PCI device state.
2627 err
= pci_enable_device(pdev
);
2629 dev_err(&pdev
->dev
, "cannot enable PCI device\n");
2634 * Reserve PCI resources for the device. If we can't get them some
2635 * other driver may have already claimed the device ...
2637 err
= pci_request_regions(pdev
, KBUILD_MODNAME
);
2639 dev_err(&pdev
->dev
, "cannot obtain PCI resources\n");
2640 goto err_disable_device
;
2644 * Set up our DMA mask: try for 64-bit address masking first and
2645 * fall back to 32-bit if we can't get 64 bits ...
2647 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(64));
2649 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(64));
2651 dev_err(&pdev
->dev
, "unable to obtain 64-bit DMA for"
2652 " coherent allocations\n");
2653 goto err_release_regions
;
2657 err
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
2659 dev_err(&pdev
->dev
, "no usable DMA configuration\n");
2660 goto err_release_regions
;
2666 * Enable bus mastering for the device ...
2668 pci_set_master(pdev
);
2671 * Allocate our adapter data structure and attach it to the device.
2673 adapter
= kzalloc(sizeof(*adapter
), GFP_KERNEL
);
2676 goto err_release_regions
;
2678 pci_set_drvdata(pdev
, adapter
);
2679 adapter
->pdev
= pdev
;
2680 adapter
->pdev_dev
= &pdev
->dev
;
2683 * Initialize SMP data synchronization resources.
2685 spin_lock_init(&adapter
->stats_lock
);
2688 * Map our I/O registers in BAR0.
2690 adapter
->regs
= pci_ioremap_bar(pdev
, 0);
2691 if (!adapter
->regs
) {
2692 dev_err(&pdev
->dev
, "cannot map device registers\n");
2694 goto err_free_adapter
;
2697 /* Wait for the device to become ready before proceeding ...
2699 err
= t4vf_prep_adapter(adapter
);
2701 dev_err(adapter
->pdev_dev
, "device didn't become ready:"
2703 goto err_unmap_bar0
;
2706 /* For T5 and later we want to use the new BAR-based User Doorbells,
2707 * so we need to map BAR2 here ...
2709 if (!is_t4(adapter
->params
.chip
)) {
2710 adapter
->bar2
= ioremap_wc(pci_resource_start(pdev
, 2),
2711 pci_resource_len(pdev
, 2));
2712 if (!adapter
->bar2
) {
2713 dev_err(adapter
->pdev_dev
, "cannot map BAR2 doorbells\n");
2715 goto err_unmap_bar0
;
2719 * Initialize adapter level features.
2721 adapter
->name
= pci_name(pdev
);
2722 adapter
->msg_enable
= dflt_msg_enable
;
2723 err
= adap_init0(adapter
);
2728 * Allocate our "adapter ports" and stitch everything together.
2730 pmask
= adapter
->params
.vfres
.pmask
;
2731 for_each_port(adapter
, pidx
) {
2735 * We simplistically allocate our virtual interfaces
2736 * sequentially across the port numbers to which we have
2737 * access rights. This should be configurable in some manner
2742 port_id
= ffs(pmask
) - 1;
2743 pmask
&= ~(1 << port_id
);
2744 viid
= t4vf_alloc_vi(adapter
, port_id
);
2746 dev_err(&pdev
->dev
, "cannot allocate VI for port %d:"
2747 " err=%d\n", port_id
, viid
);
2753 * Allocate our network device and stitch things together.
2755 netdev
= alloc_etherdev_mq(sizeof(struct port_info
),
2757 if (netdev
== NULL
) {
2758 t4vf_free_vi(adapter
, viid
);
2762 adapter
->port
[pidx
] = netdev
;
2763 SET_NETDEV_DEV(netdev
, &pdev
->dev
);
2764 pi
= netdev_priv(netdev
);
2765 pi
->adapter
= adapter
;
2767 pi
->port_id
= port_id
;
2771 * Initialize the starting state of our "port" and register
2774 pi
->xact_addr_filt
= -1;
2775 netif_carrier_off(netdev
);
2776 netdev
->irq
= pdev
->irq
;
2778 netdev
->hw_features
= NETIF_F_SG
| TSO_FLAGS
|
2779 NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
|
2780 NETIF_F_HW_VLAN_CTAG_RX
| NETIF_F_RXCSUM
;
2781 netdev
->vlan_features
= NETIF_F_SG
| TSO_FLAGS
|
2782 NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
|
2784 netdev
->features
= netdev
->hw_features
|
2785 NETIF_F_HW_VLAN_CTAG_TX
;
2787 netdev
->features
|= NETIF_F_HIGHDMA
;
2789 netdev
->priv_flags
|= IFF_UNICAST_FLT
;
2791 netdev
->netdev_ops
= &cxgb4vf_netdev_ops
;
2792 netdev
->ethtool_ops
= &cxgb4vf_ethtool_ops
;
2795 * Initialize the hardware/software state for the port.
2797 err
= t4vf_port_init(adapter
, pidx
);
2799 dev_err(&pdev
->dev
, "cannot initialize port %d\n",
2806 * The "card" is now ready to go. If any errors occur during device
2807 * registration we do not fail the whole "card" but rather proceed
2808 * only with the ports we manage to register successfully. However we
2809 * must register at least one net device.
2811 for_each_port(adapter
, pidx
) {
2812 netdev
= adapter
->port
[pidx
];
2816 err
= register_netdev(netdev
);
2818 dev_warn(&pdev
->dev
, "cannot register net device %s,"
2819 " skipping\n", netdev
->name
);
2823 set_bit(pidx
, &adapter
->registered_device_map
);
2825 if (adapter
->registered_device_map
== 0) {
2826 dev_err(&pdev
->dev
, "could not register any net devices\n");
2831 * Set up our debugfs entries.
2833 if (!IS_ERR_OR_NULL(cxgb4vf_debugfs_root
)) {
2834 adapter
->debugfs_root
=
2835 debugfs_create_dir(pci_name(pdev
),
2836 cxgb4vf_debugfs_root
);
2837 if (IS_ERR_OR_NULL(adapter
->debugfs_root
))
2838 dev_warn(&pdev
->dev
, "could not create debugfs"
2841 setup_debugfs(adapter
);
2845 * See what interrupts we'll be using. If we've been configured to
2846 * use MSI-X interrupts, try to enable them but fall back to using
2847 * MSI interrupts if we can't enable MSI-X interrupts. If we can't
2848 * get MSI interrupts we bail with the error.
2850 if (msi
== MSI_MSIX
&& enable_msix(adapter
) == 0)
2851 adapter
->flags
|= USING_MSIX
;
2853 err
= pci_enable_msi(pdev
);
2855 dev_err(&pdev
->dev
, "Unable to allocate %s interrupts;"
2857 msi
== MSI_MSIX
? "MSI-X or MSI" : "MSI", err
);
2858 goto err_free_debugfs
;
2860 adapter
->flags
|= USING_MSI
;
2864 * Now that we know how many "ports" we have and what their types are,
2865 * and how many Queue Sets we can support, we can configure our queue
2868 cfg_queues(adapter
);
2871 * Print a short notice on the existence and configuration of the new
2872 * VF network device ...
2874 for_each_port(adapter
, pidx
) {
2875 dev_info(adapter
->pdev_dev
, "%s: Chelsio VF NIC PCIe %s\n",
2876 adapter
->port
[pidx
]->name
,
2877 (adapter
->flags
& USING_MSIX
) ? "MSI-X" :
2878 (adapter
->flags
& USING_MSI
) ? "MSI" : "");
2887 * Error recovery and exit code. Unwind state that's been created
2888 * so far and return the error.
2892 if (!IS_ERR_OR_NULL(adapter
->debugfs_root
)) {
2893 cleanup_debugfs(adapter
);
2894 debugfs_remove_recursive(adapter
->debugfs_root
);
2898 for_each_port(adapter
, pidx
) {
2899 netdev
= adapter
->port
[pidx
];
2902 pi
= netdev_priv(netdev
);
2903 t4vf_free_vi(adapter
, pi
->viid
);
2904 if (test_bit(pidx
, &adapter
->registered_device_map
))
2905 unregister_netdev(netdev
);
2906 free_netdev(netdev
);
2910 if (!is_t4(adapter
->params
.chip
))
2911 iounmap(adapter
->bar2
);
2914 iounmap(adapter
->regs
);
2919 err_release_regions
:
2920 pci_release_regions(pdev
);
2921 pci_clear_master(pdev
);
2924 pci_disable_device(pdev
);
2930 * "Remove" a device: tear down all kernel and driver state created in the
2931 * "probe" routine and quiesce the device (disable interrupts, etc.). (Note
2932 * that this is called "remove_one" in the PF Driver.)
2934 static void cxgb4vf_pci_remove(struct pci_dev
*pdev
)
2936 struct adapter
*adapter
= pci_get_drvdata(pdev
);
2939 * Tear down driver state associated with device.
2945 * Stop all of our activity. Unregister network port,
2946 * disable interrupts, etc.
2948 for_each_port(adapter
, pidx
)
2949 if (test_bit(pidx
, &adapter
->registered_device_map
))
2950 unregister_netdev(adapter
->port
[pidx
]);
2951 t4vf_sge_stop(adapter
);
2952 if (adapter
->flags
& USING_MSIX
) {
2953 pci_disable_msix(adapter
->pdev
);
2954 adapter
->flags
&= ~USING_MSIX
;
2955 } else if (adapter
->flags
& USING_MSI
) {
2956 pci_disable_msi(adapter
->pdev
);
2957 adapter
->flags
&= ~USING_MSI
;
2961 * Tear down our debugfs entries.
2963 if (!IS_ERR_OR_NULL(adapter
->debugfs_root
)) {
2964 cleanup_debugfs(adapter
);
2965 debugfs_remove_recursive(adapter
->debugfs_root
);
2969 * Free all of the various resources which we've acquired ...
2971 t4vf_free_sge_resources(adapter
);
2972 for_each_port(adapter
, pidx
) {
2973 struct net_device
*netdev
= adapter
->port
[pidx
];
2974 struct port_info
*pi
;
2979 pi
= netdev_priv(netdev
);
2980 t4vf_free_vi(adapter
, pi
->viid
);
2981 free_netdev(netdev
);
2983 iounmap(adapter
->regs
);
2984 if (!is_t4(adapter
->params
.chip
))
2985 iounmap(adapter
->bar2
);
2990 * Disable the device and release its PCI resources.
2992 pci_disable_device(pdev
);
2993 pci_clear_master(pdev
);
2994 pci_release_regions(pdev
);
2998 * "Shutdown" quiesce the device, stopping Ingress Packet and Interrupt
3001 static void cxgb4vf_pci_shutdown(struct pci_dev
*pdev
)
3003 struct adapter
*adapter
;
3006 adapter
= pci_get_drvdata(pdev
);
3010 /* Disable all Virtual Interfaces. This will shut down the
3011 * delivery of all ingress packets into the chip for these
3012 * Virtual Interfaces.
3014 for_each_port(adapter
, pidx
)
3015 if (test_bit(pidx
, &adapter
->registered_device_map
))
3016 unregister_netdev(adapter
->port
[pidx
]);
3018 /* Free up all Queues which will prevent further DMA and
3019 * Interrupts allowing various internal pathways to drain.
3021 t4vf_sge_stop(adapter
);
3022 if (adapter
->flags
& USING_MSIX
) {
3023 pci_disable_msix(adapter
->pdev
);
3024 adapter
->flags
&= ~USING_MSIX
;
3025 } else if (adapter
->flags
& USING_MSI
) {
3026 pci_disable_msi(adapter
->pdev
);
3027 adapter
->flags
&= ~USING_MSI
;
3031 * Free up all Queues which will prevent further DMA and
3032 * Interrupts allowing various internal pathways to drain.
3034 t4vf_free_sge_resources(adapter
);
3035 pci_set_drvdata(pdev
, NULL
);
3038 /* Macros needed to support the PCI Device ID Table ...
3040 #define CH_PCI_DEVICE_ID_TABLE_DEFINE_BEGIN \
3041 static struct pci_device_id cxgb4vf_pci_tbl[] = {
3042 #define CH_PCI_DEVICE_ID_FUNCTION 0x8
3044 #define CH_PCI_ID_TABLE_ENTRY(devid) \
3045 { PCI_VDEVICE(CHELSIO, (devid)), 0 }
3047 #define CH_PCI_DEVICE_ID_TABLE_DEFINE_END { 0, } }
3049 #include "../cxgb4/t4_pci_id_tbl.h"
3051 MODULE_DESCRIPTION(DRV_DESC
);
3052 MODULE_AUTHOR("Chelsio Communications");
3053 MODULE_LICENSE("Dual BSD/GPL");
3054 MODULE_VERSION(DRV_VERSION
);
3055 MODULE_DEVICE_TABLE(pci
, cxgb4vf_pci_tbl
);
3057 static struct pci_driver cxgb4vf_driver
= {
3058 .name
= KBUILD_MODNAME
,
3059 .id_table
= cxgb4vf_pci_tbl
,
3060 .probe
= cxgb4vf_pci_probe
,
3061 .remove
= cxgb4vf_pci_remove
,
3062 .shutdown
= cxgb4vf_pci_shutdown
,
3066 * Initialize global driver state.
3068 static int __init
cxgb4vf_module_init(void)
3073 * Vet our module parameters.
3075 if (msi
!= MSI_MSIX
&& msi
!= MSI_MSI
) {
3076 pr_warn("bad module parameter msi=%d; must be %d (MSI-X or MSI) or %d (MSI)\n",
3077 msi
, MSI_MSIX
, MSI_MSI
);
3081 /* Debugfs support is optional, just warn if this fails */
3082 cxgb4vf_debugfs_root
= debugfs_create_dir(KBUILD_MODNAME
, NULL
);
3083 if (IS_ERR_OR_NULL(cxgb4vf_debugfs_root
))
3084 pr_warn("could not create debugfs entry, continuing\n");
3086 ret
= pci_register_driver(&cxgb4vf_driver
);
3087 if (ret
< 0 && !IS_ERR_OR_NULL(cxgb4vf_debugfs_root
))
3088 debugfs_remove(cxgb4vf_debugfs_root
);
3093 * Tear down global driver state.
3095 static void __exit
cxgb4vf_module_exit(void)
3097 pci_unregister_driver(&cxgb4vf_driver
);
3098 debugfs_remove(cxgb4vf_debugfs_root
);
3101 module_init(cxgb4vf_module_init
);
3102 module_exit(cxgb4vf_module_exit
);