ql_os.c revision 322975 
1/*
2 * Copyright (c) 2013-2016 Qlogic Corporation
3 * All rights reserved.
4 *
5 *  Redistribution and use in source and binary forms, with or without
6 *  modification, are permitted provided that the following conditions
7 *  are met:
8 *
9 *  1. Redistributions of source code must retain the above copyright
10 *     notice, this list of conditions and the following disclaimer.
11 *  2. Redistributions in binary form must reproduce the above copyright
12 *     notice, this list of conditions and the following disclaimer in the
13 *     documentation and/or other materials provided with the distribution.
14 *
15 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 *  and ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
19 *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24 *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 *  POSSIBILITY OF SUCH DAMAGE.
26 */
27
28/*
29 * File: ql_os.c
30 * Author : David C Somayajulu, Qlogic Corporation, Aliso Viejo, CA 92656.
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD: stable/10/sys/dev/qlxgbe/ql_os.c 322975 2017-08-28 19:17:28Z davidcs $");
35
36
37#include "ql_os.h"
38#include "ql_hw.h"
39#include "ql_def.h"
40#include "ql_inline.h"
41#include "ql_ver.h"
42#include "ql_glbl.h"
43#include "ql_dbg.h"
44#include <sys/smp.h>
45
46/*
47 * Some PCI Configuration Space Related Defines
48 */
49
50#ifndef PCI_VENDOR_QLOGIC
51#define PCI_VENDOR_QLOGIC	0x1077
52#endif
53
54#ifndef PCI_PRODUCT_QLOGIC_ISP8030
55#define PCI_PRODUCT_QLOGIC_ISP8030	0x8030
56#endif
57
58#define PCI_QLOGIC_ISP8030 \
59	((PCI_PRODUCT_QLOGIC_ISP8030 << 16) | PCI_VENDOR_QLOGIC)
60
61/*
62 * static functions
63 */
64static int qla_alloc_parent_dma_tag(qla_host_t *ha);
65static void qla_free_parent_dma_tag(qla_host_t *ha);
66static int qla_alloc_xmt_bufs(qla_host_t *ha);
67static void qla_free_xmt_bufs(qla_host_t *ha);
68static int qla_alloc_rcv_bufs(qla_host_t *ha);
69static void qla_free_rcv_bufs(qla_host_t *ha);
70static void qla_clear_tx_buf(qla_host_t *ha, qla_tx_buf_t *txb);
71
72static void qla_init_ifnet(device_t dev, qla_host_t *ha);
73static int qla_sysctl_get_link_status(SYSCTL_HANDLER_ARGS);
74static void qla_release(qla_host_t *ha);
75static void qla_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nsegs,
76		int error);
77static void qla_stop(qla_host_t *ha);
78static void qla_get_peer(qla_host_t *ha);
79static void qla_error_recovery(void *context, int pending);
80static void qla_async_event(void *context, int pending);
81static void qla_stats(void *context, int pending);
82static int qla_send(qla_host_t *ha, struct mbuf **m_headp, uint32_t txr_idx,
83		uint32_t iscsi_pdu);
84
85/*
86 * Hooks to the Operating Systems
87 */
88static int qla_pci_probe (device_t);
89static int qla_pci_attach (device_t);
90static int qla_pci_detach (device_t);
91
92static void qla_init(void *arg);
93static int qla_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
94static int qla_media_change(struct ifnet *ifp);
95static void qla_media_status(struct ifnet *ifp, struct ifmediareq *ifmr);
96
97static int qla_transmit(struct ifnet *ifp, struct mbuf  *mp);
98static void qla_qflush(struct ifnet *ifp);
99static int qla_alloc_tx_br(qla_host_t *ha, qla_tx_fp_t *tx_fp);
100static void qla_free_tx_br(qla_host_t *ha, qla_tx_fp_t *tx_fp);
101static int qla_create_fp_taskqueues(qla_host_t *ha);
102static void qla_destroy_fp_taskqueues(qla_host_t *ha);
103static void qla_drain_fp_taskqueues(qla_host_t *ha);
104
105static device_method_t qla_pci_methods[] = {
106	/* Device interface */
107	DEVMETHOD(device_probe, qla_pci_probe),
108	DEVMETHOD(device_attach, qla_pci_attach),
109	DEVMETHOD(device_detach, qla_pci_detach),
110	{ 0, 0 }
111};
112
113static driver_t qla_pci_driver = {
114	"ql", qla_pci_methods, sizeof (qla_host_t),
115};
116
117static devclass_t qla83xx_devclass;
118
119DRIVER_MODULE(qla83xx, pci, qla_pci_driver, qla83xx_devclass, 0, 0);
120
121MODULE_DEPEND(qla83xx, pci, 1, 1, 1);
122MODULE_DEPEND(qla83xx, ether, 1, 1, 1);
123
124MALLOC_DEFINE(M_QLA83XXBUF, "qla83xxbuf", "Buffers for qla83xx driver");
125
126#define QL_STD_REPLENISH_THRES		0
127#define QL_JUMBO_REPLENISH_THRES	32
128
129
130static char dev_str[64];
131static char ver_str[64];
132
133/*
134 * Name:	qla_pci_probe
135 * Function:	Validate the PCI device to be a QLA80XX device
136 */
137static int
138qla_pci_probe(device_t dev)
139{
140        switch ((pci_get_device(dev) << 16) | (pci_get_vendor(dev))) {
141        case PCI_QLOGIC_ISP8030:
142		snprintf(dev_str, sizeof(dev_str), "%s v%d.%d.%d",
143			"Qlogic ISP 83xx PCI CNA Adapter-Ethernet Function",
144			QLA_VERSION_MAJOR, QLA_VERSION_MINOR,
145			QLA_VERSION_BUILD);
146		snprintf(ver_str, sizeof(ver_str), "v%d.%d.%d",
147			QLA_VERSION_MAJOR, QLA_VERSION_MINOR,
148			QLA_VERSION_BUILD);
149                device_set_desc(dev, dev_str);
150                break;
151        default:
152                return (ENXIO);
153        }
154
155        if (bootverbose)
156                printf("%s: %s\n ", __func__, dev_str);
157
158        return (BUS_PROBE_DEFAULT);
159}
160
161static void
162qla_add_sysctls(qla_host_t *ha)
163{
164        device_t dev = ha->pci_dev;
165
166	SYSCTL_ADD_STRING(device_get_sysctl_ctx(dev),
167		SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
168		OID_AUTO, "version", CTLFLAG_RD,
169		ver_str, 0, "Driver Version");
170
171        SYSCTL_ADD_STRING(device_get_sysctl_ctx(dev),
172                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
173                OID_AUTO, "fw_version", CTLFLAG_RD,
174                ha->fw_ver_str, 0, "firmware version");
175
176        SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
177                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
178                OID_AUTO, "link_status", CTLTYPE_INT | CTLFLAG_RW,
179                (void *)ha, 0,
180                qla_sysctl_get_link_status, "I", "Link Status");
181
182	ha->dbg_level = 0;
183        SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
184                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
185                OID_AUTO, "debug", CTLFLAG_RW,
186                &ha->dbg_level, ha->dbg_level, "Debug Level");
187
188	ha->std_replenish = QL_STD_REPLENISH_THRES;
189        SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
190                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
191                OID_AUTO, "std_replenish", CTLFLAG_RW,
192                &ha->std_replenish, ha->std_replenish,
193                "Threshold for Replenishing Standard Frames");
194
195        SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
196                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
197                OID_AUTO, "ipv4_lro",
198                CTLFLAG_RD, &ha->ipv4_lro,
199                "number of ipv4 lro completions");
200
201        SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
202                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
203                OID_AUTO, "ipv6_lro",
204                CTLFLAG_RD, &ha->ipv6_lro,
205                "number of ipv6 lro completions");
206
207	SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
208		SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
209		OID_AUTO, "tx_tso_frames",
210		CTLFLAG_RD, &ha->tx_tso_frames,
211		"number of Tx TSO Frames");
212
213	SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
214                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
215		OID_AUTO, "hw_vlan_tx_frames",
216		CTLFLAG_RD, &ha->hw_vlan_tx_frames,
217		"number of Tx VLAN Frames");
218
219	SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
220                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
221		OID_AUTO, "hw_lock_failed",
222		CTLFLAG_RD, &ha->hw_lock_failed,
223		"number of hw_lock failures");
224
225        return;
226}
227
228static void
229qla_watchdog(void *arg)
230{
231	qla_host_t *ha = arg;
232	qla_hw_t *hw;
233	struct ifnet *ifp;
234
235	hw = &ha->hw;
236	ifp = ha->ifp;
237
238        if (ha->qla_watchdog_exit) {
239		ha->qla_watchdog_exited = 1;
240		return;
241	}
242	ha->qla_watchdog_exited = 0;
243
244	if (!ha->qla_watchdog_pause) {
245		if (ql_hw_check_health(ha) || ha->qla_initiate_recovery ||
246			(ha->msg_from_peer == QL_PEER_MSG_RESET)) {
247
248			if (!(ha->dbg_level & 0x8000)) {
249				ha->qla_watchdog_paused = 1;
250				ha->qla_watchdog_pause = 1;
251				ha->qla_initiate_recovery = 0;
252				ha->err_inject = 0;
253				device_printf(ha->pci_dev,
254					"%s: taskqueue_enqueue(err_task) \n",
255					__func__);
256				taskqueue_enqueue(ha->err_tq, &ha->err_task);
257				return;
258			}
259
260		} else if (ha->qla_interface_up) {
261
262			ha->watchdog_ticks++;
263
264			if (ha->watchdog_ticks > 1000)
265				ha->watchdog_ticks = 0;
266
267                        if (!ha->watchdog_ticks && QL_RUNNING(ifp)) {
268                                taskqueue_enqueue(ha->stats_tq, &ha->stats_task);
269                        }
270
271                        if (ha->async_event) {
272                                taskqueue_enqueue(ha->async_event_tq,
273                                        &ha->async_event_task);
274                        }
275
276#if 0
277			for (i = 0; ((i < ha->hw.num_sds_rings) &&
278					!ha->watchdog_ticks); i++) {
279				qla_tx_fp_t *fp = &ha->tx_fp[i];
280
281				if (fp->fp_taskqueue != NULL)
282					taskqueue_enqueue(fp->fp_taskqueue,
283						&fp->fp_task);
284			}
285#endif
286			ha->qla_watchdog_paused = 0;
287		} else {
288			ha->qla_watchdog_paused = 0;
289		}
290	} else {
291		ha->qla_watchdog_paused = 1;
292	}
293
294	callout_reset(&ha->tx_callout, QLA_WATCHDOG_CALLOUT_TICKS,
295		qla_watchdog, ha);
296}
297
298/*
299 * Name:	qla_pci_attach
300 * Function:	attaches the device to the operating system
301 */
302static int
303qla_pci_attach(device_t dev)
304{
305	qla_host_t *ha = NULL;
306	uint32_t rsrc_len;
307	int i;
308	uint32_t num_rcvq = 0;
309
310        if ((ha = device_get_softc(dev)) == NULL) {
311                device_printf(dev, "cannot get softc\n");
312                return (ENOMEM);
313        }
314
315        memset(ha, 0, sizeof (qla_host_t));
316
317        if (pci_get_device(dev) != PCI_PRODUCT_QLOGIC_ISP8030) {
318                device_printf(dev, "device is not ISP8030\n");
319                return (ENXIO);
320	}
321
322        ha->pci_func = pci_get_function(dev) & 0x1;
323
324        ha->pci_dev = dev;
325
326	pci_enable_busmaster(dev);
327
328	ha->reg_rid = PCIR_BAR(0);
329	ha->pci_reg = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &ha->reg_rid,
330				RF_ACTIVE);
331
332        if (ha->pci_reg == NULL) {
333                device_printf(dev, "unable to map any ports\n");
334                goto qla_pci_attach_err;
335        }
336
337	rsrc_len = (uint32_t) bus_get_resource_count(dev, SYS_RES_MEMORY,
338					ha->reg_rid);
339
340	mtx_init(&ha->hw_lock, "qla83xx_hw_lock", MTX_NETWORK_LOCK, MTX_DEF);
341	ha->flags.lock_init = 1;
342
343	qla_add_sysctls(ha);
344
345	ha->hw.num_sds_rings = MAX_SDS_RINGS;
346	ha->hw.num_rds_rings = MAX_RDS_RINGS;
347	ha->hw.num_tx_rings = NUM_TX_RINGS;
348
349	ha->reg_rid1 = PCIR_BAR(2);
350	ha->pci_reg1 = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
351			&ha->reg_rid1, RF_ACTIVE);
352
353	ha->msix_count = pci_msix_count(dev);
354
355	if (ha->msix_count < 1 ) {
356		device_printf(dev, "%s: msix_count[%d] not enough\n", __func__,
357			ha->msix_count);
358		goto qla_pci_attach_err;
359	}
360
361	if (ha->msix_count < (ha->hw.num_sds_rings + 1)) {
362		ha->hw.num_sds_rings = ha->msix_count - 1;
363	}
364
365	QL_DPRINT2(ha, (dev, "%s: ha %p pci_func 0x%x rsrc_count 0x%08x"
366		" msix_count 0x%x pci_reg %p pci_reg1 %p\n", __func__, ha,
367		ha->pci_func, rsrc_len, ha->msix_count, ha->pci_reg,
368		ha->pci_reg1));
369
370        /* initialize hardware */
371        if (ql_init_hw(ha)) {
372                device_printf(dev, "%s: ql_init_hw failed\n", __func__);
373                goto qla_pci_attach_err;
374        }
375
376        device_printf(dev, "%s: firmware[%d.%d.%d.%d]\n", __func__,
377                ha->fw_ver_major, ha->fw_ver_minor, ha->fw_ver_sub,
378                ha->fw_ver_build);
379        snprintf(ha->fw_ver_str, sizeof(ha->fw_ver_str), "%d.%d.%d.%d",
380                        ha->fw_ver_major, ha->fw_ver_minor, ha->fw_ver_sub,
381                        ha->fw_ver_build);
382
383        if (qla_get_nic_partition(ha, NULL, &num_rcvq)) {
384                device_printf(dev, "%s: qla_get_nic_partition failed\n",
385                        __func__);
386                goto qla_pci_attach_err;
387        }
388        device_printf(dev, "%s: ha %p pci_func 0x%x rsrc_count 0x%08x"
389                " msix_count 0x%x pci_reg %p pci_reg1 %p num_rcvq = %d\n",
390		__func__, ha, ha->pci_func, rsrc_len, ha->msix_count,
391		ha->pci_reg, ha->pci_reg1, num_rcvq);
392
393        if ((ha->msix_count  < 64) || (num_rcvq != 32)) {
394		if (ha->hw.num_sds_rings > 15) {
395                	ha->hw.num_sds_rings = 15;
396		}
397        }
398
399	ha->hw.num_rds_rings = ha->hw.num_sds_rings;
400	ha->hw.num_tx_rings = ha->hw.num_sds_rings;
401
402#ifdef QL_ENABLE_ISCSI_TLV
403	ha->hw.num_tx_rings = ha->hw.num_sds_rings * 2;
404#endif /* #ifdef QL_ENABLE_ISCSI_TLV */
405
406	ql_hw_add_sysctls(ha);
407
408	ha->msix_count = ha->hw.num_sds_rings + 1;
409
410	if (pci_alloc_msix(dev, &ha->msix_count)) {
411		device_printf(dev, "%s: pci_alloc_msi[%d] failed\n", __func__,
412			ha->msix_count);
413		ha->msix_count = 0;
414		goto qla_pci_attach_err;
415	}
416
417	ha->mbx_irq_rid = 1;
418	ha->mbx_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
419				&ha->mbx_irq_rid,
420				(RF_ACTIVE | RF_SHAREABLE));
421	if (ha->mbx_irq == NULL) {
422		device_printf(dev, "could not allocate mbx interrupt\n");
423		goto qla_pci_attach_err;
424	}
425	if (bus_setup_intr(dev, ha->mbx_irq, (INTR_TYPE_NET | INTR_MPSAFE),
426		NULL, ql_mbx_isr, ha, &ha->mbx_handle)) {
427		device_printf(dev, "could not setup mbx interrupt\n");
428		goto qla_pci_attach_err;
429	}
430
431	for (i = 0; i < ha->hw.num_sds_rings; i++) {
432		ha->irq_vec[i].sds_idx = i;
433                ha->irq_vec[i].ha = ha;
434                ha->irq_vec[i].irq_rid = 2 + i;
435
436		ha->irq_vec[i].irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
437				&ha->irq_vec[i].irq_rid,
438				(RF_ACTIVE | RF_SHAREABLE));
439
440		if (ha->irq_vec[i].irq == NULL) {
441			device_printf(dev, "could not allocate interrupt\n");
442			goto qla_pci_attach_err;
443		}
444		if (bus_setup_intr(dev, ha->irq_vec[i].irq,
445			(INTR_TYPE_NET | INTR_MPSAFE),
446			NULL, ql_isr, &ha->irq_vec[i],
447			&ha->irq_vec[i].handle)) {
448			device_printf(dev, "could not setup interrupt\n");
449			goto qla_pci_attach_err;
450		}
451
452		ha->tx_fp[i].ha = ha;
453		ha->tx_fp[i].txr_idx = i;
454
455		if (qla_alloc_tx_br(ha, &ha->tx_fp[i])) {
456			device_printf(dev, "%s: could not allocate tx_br[%d]\n",
457				__func__, i);
458			goto qla_pci_attach_err;
459		}
460	}
461
462	if (qla_create_fp_taskqueues(ha) != 0)
463		goto qla_pci_attach_err;
464
465	printf("%s: mp__ncpus %d sds %d rds %d msi-x %d\n", __func__, mp_ncpus,
466		ha->hw.num_sds_rings, ha->hw.num_rds_rings, ha->msix_count);
467
468	ql_read_mac_addr(ha);
469
470	/* allocate parent dma tag */
471	if (qla_alloc_parent_dma_tag(ha)) {
472		device_printf(dev, "%s: qla_alloc_parent_dma_tag failed\n",
473			__func__);
474		goto qla_pci_attach_err;
475	}
476
477	/* alloc all dma buffers */
478	if (ql_alloc_dma(ha)) {
479		device_printf(dev, "%s: ql_alloc_dma failed\n", __func__);
480		goto qla_pci_attach_err;
481	}
482	qla_get_peer(ha);
483
484	if (ql_minidump_init(ha) != 0) {
485		device_printf(dev, "%s: ql_minidump_init failed\n", __func__);
486		goto qla_pci_attach_err;
487	}
488	/* create the o.s ethernet interface */
489	qla_init_ifnet(dev, ha);
490
491	ha->flags.qla_watchdog_active = 1;
492	ha->qla_watchdog_pause = 0;
493
494	callout_init(&ha->tx_callout, TRUE);
495	ha->flags.qla_callout_init = 1;
496
497	/* create ioctl device interface */
498	if (ql_make_cdev(ha)) {
499		device_printf(dev, "%s: ql_make_cdev failed\n", __func__);
500		goto qla_pci_attach_err;
501	}
502
503	callout_reset(&ha->tx_callout, QLA_WATCHDOG_CALLOUT_TICKS,
504		qla_watchdog, ha);
505
506	TASK_INIT(&ha->err_task, 0, qla_error_recovery, ha);
507	ha->err_tq = taskqueue_create("qla_errq", M_NOWAIT,
508			taskqueue_thread_enqueue, &ha->err_tq);
509	taskqueue_start_threads(&ha->err_tq, 1, PI_NET, "%s errq",
510		device_get_nameunit(ha->pci_dev));
511
512        TASK_INIT(&ha->async_event_task, 0, qla_async_event, ha);
513        ha->async_event_tq = taskqueue_create("qla_asyncq", M_NOWAIT,
514                        taskqueue_thread_enqueue, &ha->async_event_tq);
515        taskqueue_start_threads(&ha->async_event_tq, 1, PI_NET, "%s asyncq",
516                device_get_nameunit(ha->pci_dev));
517
518        TASK_INIT(&ha->stats_task, 0, qla_stats, ha);
519        ha->stats_tq = taskqueue_create("qla_statsq", M_NOWAIT,
520                        taskqueue_thread_enqueue, &ha->stats_tq);
521        taskqueue_start_threads(&ha->stats_tq, 1, PI_NET, "%s taskq",
522                device_get_nameunit(ha->pci_dev));
523
524	QL_DPRINT2(ha, (dev, "%s: exit 0\n", __func__));
525        return (0);
526
527qla_pci_attach_err:
528
529	qla_release(ha);
530
531	if (ha->flags.lock_init) {
532		mtx_destroy(&ha->hw_lock);
533	}
534
535	QL_DPRINT2(ha, (dev, "%s: exit ENXIO\n", __func__));
536        return (ENXIO);
537}
538
539/*
540 * Name:	qla_pci_detach
541 * Function:	Unhooks the device from the operating system
542 */
543static int
544qla_pci_detach(device_t dev)
545{
546	qla_host_t *ha = NULL;
547	struct ifnet *ifp;
548
549
550        if ((ha = device_get_softc(dev)) == NULL) {
551                device_printf(dev, "cannot get softc\n");
552                return (ENOMEM);
553        }
554
555	QL_DPRINT2(ha, (dev, "%s: enter\n", __func__));
556
557	ifp = ha->ifp;
558
559	ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
560	QLA_LOCK(ha, __func__, -1, 0);
561
562	ha->qla_detach_active = 1;
563	qla_stop(ha);
564
565	qla_release(ha);
566
567	QLA_UNLOCK(ha, __func__);
568
569	if (ha->flags.lock_init) {
570		mtx_destroy(&ha->hw_lock);
571	}
572
573	QL_DPRINT2(ha, (dev, "%s: exit\n", __func__));
574
575        return (0);
576}
577
578/*
579 * SYSCTL Related Callbacks
580 */
581static int
582qla_sysctl_get_link_status(SYSCTL_HANDLER_ARGS)
583{
584	int err, ret = 0;
585	qla_host_t *ha;
586
587	err = sysctl_handle_int(oidp, &ret, 0, req);
588
589	if (err || !req->newptr)
590		return (err);
591
592	if (ret == 1) {
593		ha = (qla_host_t *)arg1;
594		ql_hw_link_status(ha);
595	}
596	return (err);
597}
598
599/*
600 * Name:	qla_release
601 * Function:	Releases the resources allocated for the device
602 */
603static void
604qla_release(qla_host_t *ha)
605{
606	device_t dev;
607	int i;
608
609	dev = ha->pci_dev;
610
611        if (ha->async_event_tq) {
612                taskqueue_drain(ha->async_event_tq, &ha->async_event_task);
613                taskqueue_free(ha->async_event_tq);
614        }
615
616	if (ha->err_tq) {
617		taskqueue_drain(ha->err_tq, &ha->err_task);
618		taskqueue_free(ha->err_tq);
619	}
620
621	if (ha->stats_tq) {
622		taskqueue_drain(ha->stats_tq, &ha->stats_task);
623		taskqueue_free(ha->stats_tq);
624	}
625
626	ql_del_cdev(ha);
627
628	if (ha->flags.qla_watchdog_active) {
629		ha->qla_watchdog_exit = 1;
630
631		while (ha->qla_watchdog_exited == 0)
632			qla_mdelay(__func__, 1);
633	}
634
635	if (ha->flags.qla_callout_init)
636		callout_stop(&ha->tx_callout);
637
638	if (ha->ifp != NULL)
639		ether_ifdetach(ha->ifp);
640
641	ql_free_dma(ha);
642	qla_free_parent_dma_tag(ha);
643
644	if (ha->mbx_handle)
645		(void)bus_teardown_intr(dev, ha->mbx_irq, ha->mbx_handle);
646
647	if (ha->mbx_irq)
648		(void) bus_release_resource(dev, SYS_RES_IRQ, ha->mbx_irq_rid,
649				ha->mbx_irq);
650
651	for (i = 0; i < ha->hw.num_sds_rings; i++) {
652
653		if (ha->irq_vec[i].handle) {
654			(void)bus_teardown_intr(dev, ha->irq_vec[i].irq,
655					ha->irq_vec[i].handle);
656		}
657
658		if (ha->irq_vec[i].irq) {
659			(void)bus_release_resource(dev, SYS_RES_IRQ,
660				ha->irq_vec[i].irq_rid,
661				ha->irq_vec[i].irq);
662		}
663
664		qla_free_tx_br(ha, &ha->tx_fp[i]);
665	}
666	qla_destroy_fp_taskqueues(ha);
667
668	if (ha->msix_count)
669		pci_release_msi(dev);
670
671//	if (ha->flags.lock_init) {
672//		mtx_destroy(&ha->hw_lock);
673//	}
674
675        if (ha->pci_reg)
676                (void) bus_release_resource(dev, SYS_RES_MEMORY, ha->reg_rid,
677				ha->pci_reg);
678
679        if (ha->pci_reg1)
680                (void) bus_release_resource(dev, SYS_RES_MEMORY, ha->reg_rid1,
681				ha->pci_reg1);
682
683	return;
684}
685
686/*
687 * DMA Related Functions
688 */
689
690static void
691qla_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
692{
693        *((bus_addr_t *)arg) = 0;
694
695        if (error) {
696                printf("%s: bus_dmamap_load failed (%d)\n", __func__, error);
697                return;
698	}
699
700        *((bus_addr_t *)arg) = segs[0].ds_addr;
701
702	return;
703}
704
705int
706ql_alloc_dmabuf(qla_host_t *ha, qla_dma_t *dma_buf)
707{
708        int             ret = 0;
709        device_t        dev;
710        bus_addr_t      b_addr;
711
712        dev = ha->pci_dev;
713
714        QL_DPRINT2(ha, (dev, "%s: enter\n", __func__));
715
716        ret = bus_dma_tag_create(
717                        ha->parent_tag,/* parent */
718                        dma_buf->alignment,
719                        ((bus_size_t)(1ULL << 32)),/* boundary */
720                        BUS_SPACE_MAXADDR,      /* lowaddr */
721                        BUS_SPACE_MAXADDR,      /* highaddr */
722                        NULL, NULL,             /* filter, filterarg */
723                        dma_buf->size,          /* maxsize */
724                        1,                      /* nsegments */
725                        dma_buf->size,          /* maxsegsize */
726                        0,                      /* flags */
727                        NULL, NULL,             /* lockfunc, lockarg */
728                        &dma_buf->dma_tag);
729
730        if (ret) {
731                device_printf(dev, "%s: could not create dma tag\n", __func__);
732                goto ql_alloc_dmabuf_exit;
733        }
734        ret = bus_dmamem_alloc(dma_buf->dma_tag,
735                        (void **)&dma_buf->dma_b,
736                        (BUS_DMA_ZERO | BUS_DMA_COHERENT | BUS_DMA_NOWAIT),
737                        &dma_buf->dma_map);
738        if (ret) {
739                bus_dma_tag_destroy(dma_buf->dma_tag);
740                device_printf(dev, "%s: bus_dmamem_alloc failed\n", __func__);
741                goto ql_alloc_dmabuf_exit;
742        }
743
744        ret = bus_dmamap_load(dma_buf->dma_tag,
745                        dma_buf->dma_map,
746                        dma_buf->dma_b,
747                        dma_buf->size,
748                        qla_dmamap_callback,
749                        &b_addr, BUS_DMA_NOWAIT);
750
751        if (ret || !b_addr) {
752                bus_dma_tag_destroy(dma_buf->dma_tag);
753                bus_dmamem_free(dma_buf->dma_tag, dma_buf->dma_b,
754                        dma_buf->dma_map);
755                ret = -1;
756                goto ql_alloc_dmabuf_exit;
757        }
758
759        dma_buf->dma_addr = b_addr;
760
761ql_alloc_dmabuf_exit:
762        QL_DPRINT2(ha, (dev, "%s: exit ret 0x%08x tag %p map %p b %p sz 0x%x\n",
763                __func__, ret, (void *)dma_buf->dma_tag,
764                (void *)dma_buf->dma_map, (void *)dma_buf->dma_b,
765		dma_buf->size));
766
767        return ret;
768}
769
770void
771ql_free_dmabuf(qla_host_t *ha, qla_dma_t *dma_buf)
772{
773	bus_dmamap_unload(dma_buf->dma_tag, dma_buf->dma_map);
774        bus_dmamem_free(dma_buf->dma_tag, dma_buf->dma_b, dma_buf->dma_map);
775        bus_dma_tag_destroy(dma_buf->dma_tag);
776}
777
778static int
779qla_alloc_parent_dma_tag(qla_host_t *ha)
780{
781	int		ret;
782	device_t	dev;
783
784	dev = ha->pci_dev;
785
786        /*
787         * Allocate parent DMA Tag
788         */
789        ret = bus_dma_tag_create(
790                        bus_get_dma_tag(dev),   /* parent */
791                        1,((bus_size_t)(1ULL << 32)),/* alignment, boundary */
792                        BUS_SPACE_MAXADDR,      /* lowaddr */
793                        BUS_SPACE_MAXADDR,      /* highaddr */
794                        NULL, NULL,             /* filter, filterarg */
795                        BUS_SPACE_MAXSIZE_32BIT,/* maxsize */
796                        0,                      /* nsegments */
797                        BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */
798                        0,                      /* flags */
799                        NULL, NULL,             /* lockfunc, lockarg */
800                        &ha->parent_tag);
801
802        if (ret) {
803                device_printf(dev, "%s: could not create parent dma tag\n",
804                        __func__);
805		return (-1);
806        }
807
808        ha->flags.parent_tag = 1;
809
810	return (0);
811}
812
813static void
814qla_free_parent_dma_tag(qla_host_t *ha)
815{
816        if (ha->flags.parent_tag) {
817                bus_dma_tag_destroy(ha->parent_tag);
818                ha->flags.parent_tag = 0;
819        }
820}
821
822/*
823 * Name: qla_init_ifnet
824 * Function: Creates the Network Device Interface and Registers it with the O.S
825 */
826
827static void
828qla_init_ifnet(device_t dev, qla_host_t *ha)
829{
830	struct ifnet *ifp;
831
832	QL_DPRINT2(ha, (dev, "%s: enter\n", __func__));
833
834	ifp = ha->ifp = if_alloc(IFT_ETHER);
835
836	if (ifp == NULL)
837		panic("%s: cannot if_alloc()\n", device_get_nameunit(dev));
838
839	if_initname(ifp, device_get_name(dev), device_get_unit(dev));
840
841#if __FreeBSD_version >= 1000000
842	if_initbaudrate(ifp, IF_Gbps(10));
843	ifp->if_capabilities = IFCAP_LINKSTATE;
844#else
845	ifp->if_mtu = ETHERMTU;
846	ifp->if_baudrate = (1 * 1000 * 1000 *1000);
847
848#endif /* #if __FreeBSD_version >= 1000000 */
849
850	ifp->if_init = qla_init;
851	ifp->if_softc = ha;
852	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
853	ifp->if_ioctl = qla_ioctl;
854
855	ifp->if_transmit = qla_transmit;
856	ifp->if_qflush = qla_qflush;
857
858	IFQ_SET_MAXLEN(&ifp->if_snd, qla_get_ifq_snd_maxlen(ha));
859	ifp->if_snd.ifq_drv_maxlen = qla_get_ifq_snd_maxlen(ha);
860	IFQ_SET_READY(&ifp->if_snd);
861
862	ha->max_frame_size = ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
863
864	ether_ifattach(ifp, qla_get_mac_addr(ha));
865
866	ifp->if_capabilities |= IFCAP_HWCSUM |
867				IFCAP_TSO4 |
868				IFCAP_JUMBO_MTU |
869				IFCAP_VLAN_HWTAGGING |
870				IFCAP_VLAN_MTU |
871				IFCAP_VLAN_HWTSO |
872				IFCAP_LRO;
873
874	ifp->if_capenable = ifp->if_capabilities;
875
876	ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
877
878	ifmedia_init(&ha->media, IFM_IMASK, qla_media_change, qla_media_status);
879
880	ifmedia_add(&ha->media, (IFM_ETHER | qla_get_optics(ha) | IFM_FDX), 0,
881		NULL);
882	ifmedia_add(&ha->media, (IFM_ETHER | IFM_AUTO), 0, NULL);
883
884	ifmedia_set(&ha->media, (IFM_ETHER | IFM_AUTO));
885
886	QL_DPRINT2(ha, (dev, "%s: exit\n", __func__));
887
888	return;
889}
890
891static void
892qla_init_locked(qla_host_t *ha)
893{
894	struct ifnet *ifp = ha->ifp;
895
896	qla_stop(ha);
897
898	if (qla_alloc_xmt_bufs(ha) != 0)
899		return;
900
901	qla_confirm_9kb_enable(ha);
902
903	if (qla_alloc_rcv_bufs(ha) != 0)
904		return;
905
906	bcopy(IF_LLADDR(ha->ifp), ha->hw.mac_addr, ETHER_ADDR_LEN);
907
908	ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_TSO;
909	ifp->if_hwassist |= CSUM_TCP_IPV6 | CSUM_UDP_IPV6;
910
911	ha->stop_rcv = 0;
912 	if (ql_init_hw_if(ha) == 0) {
913		ifp = ha->ifp;
914		ifp->if_drv_flags |= IFF_DRV_RUNNING;
915		ha->qla_watchdog_pause = 0;
916		ha->hw_vlan_tx_frames = 0;
917		ha->tx_tso_frames = 0;
918		ha->qla_interface_up = 1;
919		ql_update_link_state(ha);
920	}
921
922	return;
923}
924
925static void
926qla_init(void *arg)
927{
928	qla_host_t *ha;
929
930	ha = (qla_host_t *)arg;
931
932	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
933
934	if (QLA_LOCK(ha, __func__, -1, 0) != 0)
935		return;
936
937	qla_init_locked(ha);
938
939	QLA_UNLOCK(ha, __func__);
940
941	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit\n", __func__));
942}
943
944static int
945qla_set_multi(qla_host_t *ha, uint32_t add_multi)
946{
947	uint8_t mta[Q8_MAX_NUM_MULTICAST_ADDRS * Q8_MAC_ADDR_LEN];
948	struct ifmultiaddr *ifma;
949	int mcnt = 0;
950	struct ifnet *ifp = ha->ifp;
951	int ret = 0;
952
953	if_maddr_rlock(ifp);
954
955	TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
956
957		if (ifma->ifma_addr->sa_family != AF_LINK)
958			continue;
959
960		if (mcnt == Q8_MAX_NUM_MULTICAST_ADDRS)
961			break;
962
963		bcopy(LLADDR((struct sockaddr_dl *) ifma->ifma_addr),
964			&mta[mcnt * Q8_MAC_ADDR_LEN], Q8_MAC_ADDR_LEN);
965
966		mcnt++;
967	}
968
969	if_maddr_runlock(ifp);
970
971	if (QLA_LOCK(ha, __func__, QLA_LOCK_DEFAULT_MS_TIMEOUT,
972		QLA_LOCK_NO_SLEEP) != 0)
973		return (-1);
974
975	if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
976		ret = ql_hw_set_multi(ha, mta, mcnt, add_multi);
977	}
978
979	QLA_UNLOCK(ha, __func__);
980
981	return (ret);
982}
983
984static int
985qla_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
986{
987	int ret = 0;
988	struct ifreq *ifr = (struct ifreq *)data;
989	struct ifaddr *ifa = (struct ifaddr *)data;
990	qla_host_t *ha;
991
992	ha = (qla_host_t *)ifp->if_softc;
993
994	switch (cmd) {
995	case SIOCSIFADDR:
996		QL_DPRINT4(ha, (ha->pci_dev, "%s: SIOCSIFADDR (0x%lx)\n",
997			__func__, cmd));
998
999		if (ifa->ifa_addr->sa_family == AF_INET) {
1000
1001			ret = QLA_LOCK(ha, __func__,
1002					QLA_LOCK_DEFAULT_MS_TIMEOUT,
1003					QLA_LOCK_NO_SLEEP);
1004			if (ret)
1005				break;
1006
1007			ifp->if_flags |= IFF_UP;
1008
1009			if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1010				qla_init_locked(ha);
1011			}
1012
1013			QLA_UNLOCK(ha, __func__);
1014			QL_DPRINT4(ha, (ha->pci_dev,
1015				"%s: SIOCSIFADDR (0x%lx) ipv4 [0x%08x]\n",
1016				__func__, cmd,
1017				ntohl(IA_SIN(ifa)->sin_addr.s_addr)));
1018
1019			arp_ifinit(ifp, ifa);
1020		} else {
1021			ether_ioctl(ifp, cmd, data);
1022		}
1023		break;
1024
1025	case SIOCSIFMTU:
1026		QL_DPRINT4(ha, (ha->pci_dev, "%s: SIOCSIFMTU (0x%lx)\n",
1027			__func__, cmd));
1028
1029		if (ifr->ifr_mtu > QLA_MAX_MTU) {
1030			ret = EINVAL;
1031		} else {
1032			ret = QLA_LOCK(ha, __func__, QLA_LOCK_DEFAULT_MS_TIMEOUT,
1033					QLA_LOCK_NO_SLEEP);
1034
1035			if (ret)
1036				break;
1037
1038			ifp->if_mtu = ifr->ifr_mtu;
1039			ha->max_frame_size =
1040				ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
1041
1042			if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1043				qla_init_locked(ha);
1044			}
1045
1046			if (ifp->if_mtu > ETHERMTU)
1047				ha->std_replenish = QL_JUMBO_REPLENISH_THRES;
1048			else
1049				ha->std_replenish = QL_STD_REPLENISH_THRES;
1050
1051
1052			QLA_UNLOCK(ha, __func__);
1053		}
1054
1055		break;
1056
1057	case SIOCSIFFLAGS:
1058		QL_DPRINT4(ha, (ha->pci_dev, "%s: SIOCSIFFLAGS (0x%lx)\n",
1059			__func__, cmd));
1060
1061		ret = QLA_LOCK(ha, __func__, QLA_LOCK_DEFAULT_MS_TIMEOUT,
1062				QLA_LOCK_NO_SLEEP);
1063
1064		if (ret)
1065			break;
1066
1067		if (ifp->if_flags & IFF_UP) {
1068
1069			ha->max_frame_size = ifp->if_mtu +
1070					ETHER_HDR_LEN + ETHER_CRC_LEN;
1071			qla_init_locked(ha);
1072
1073			if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1074				if ((ifp->if_flags ^ ha->if_flags) &
1075					IFF_PROMISC) {
1076					ret = ql_set_promisc(ha);
1077				} else if ((ifp->if_flags ^ ha->if_flags) &
1078					IFF_ALLMULTI) {
1079					ret = ql_set_allmulti(ha);
1080				}
1081			}
1082		} else {
1083			if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1084				qla_stop(ha);
1085			ha->if_flags = ifp->if_flags;
1086		}
1087
1088		QLA_UNLOCK(ha, __func__);
1089		break;
1090
1091	case SIOCADDMULTI:
1092		QL_DPRINT4(ha, (ha->pci_dev,
1093			"%s: %s (0x%lx)\n", __func__, "SIOCADDMULTI", cmd));
1094
1095		if (qla_set_multi(ha, 1))
1096			ret = EINVAL;
1097		break;
1098
1099	case SIOCDELMULTI:
1100		QL_DPRINT4(ha, (ha->pci_dev,
1101			"%s: %s (0x%lx)\n", __func__, "SIOCDELMULTI", cmd));
1102
1103		if (qla_set_multi(ha, 0))
1104			ret = EINVAL;
1105		break;
1106
1107	case SIOCSIFMEDIA:
1108	case SIOCGIFMEDIA:
1109		QL_DPRINT4(ha, (ha->pci_dev,
1110			"%s: SIOCSIFMEDIA/SIOCGIFMEDIA (0x%lx)\n",
1111			__func__, cmd));
1112		ret = ifmedia_ioctl(ifp, ifr, &ha->media, cmd);
1113		break;
1114
1115	case SIOCSIFCAP:
1116	{
1117		int mask = ifr->ifr_reqcap ^ ifp->if_capenable;
1118
1119		QL_DPRINT4(ha, (ha->pci_dev, "%s: SIOCSIFCAP (0x%lx)\n",
1120			__func__, cmd));
1121
1122		if (mask & IFCAP_HWCSUM)
1123			ifp->if_capenable ^= IFCAP_HWCSUM;
1124		if (mask & IFCAP_TSO4)
1125			ifp->if_capenable ^= IFCAP_TSO4;
1126		if (mask & IFCAP_TSO6)
1127			ifp->if_capenable ^= IFCAP_TSO6;
1128		if (mask & IFCAP_VLAN_HWTAGGING)
1129			ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
1130		if (mask & IFCAP_VLAN_HWTSO)
1131			ifp->if_capenable ^= IFCAP_VLAN_HWTSO;
1132		if (mask & IFCAP_LRO)
1133			ifp->if_capenable ^= IFCAP_LRO;
1134
1135		if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1136			ret = QLA_LOCK(ha, __func__, QLA_LOCK_DEFAULT_MS_TIMEOUT,
1137				QLA_LOCK_NO_SLEEP);
1138
1139			if (ret)
1140				break;
1141
1142			qla_init_locked(ha);
1143
1144			QLA_UNLOCK(ha, __func__);
1145
1146		}
1147		VLAN_CAPABILITIES(ifp);
1148		break;
1149	}
1150
1151	default:
1152		QL_DPRINT4(ha, (ha->pci_dev, "%s: default (0x%lx)\n",
1153			__func__, cmd));
1154		ret = ether_ioctl(ifp, cmd, data);
1155		break;
1156	}
1157
1158	return (ret);
1159}
1160
1161static int
1162qla_media_change(struct ifnet *ifp)
1163{
1164	qla_host_t *ha;
1165	struct ifmedia *ifm;
1166	int ret = 0;
1167
1168	ha = (qla_host_t *)ifp->if_softc;
1169
1170	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
1171
1172	ifm = &ha->media;
1173
1174	if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1175		ret = EINVAL;
1176
1177	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit\n", __func__));
1178
1179	return (ret);
1180}
1181
1182static void
1183qla_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
1184{
1185	qla_host_t *ha;
1186
1187	ha = (qla_host_t *)ifp->if_softc;
1188
1189	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
1190
1191	ifmr->ifm_status = IFM_AVALID;
1192	ifmr->ifm_active = IFM_ETHER;
1193
1194	ql_update_link_state(ha);
1195	if (ha->hw.link_up) {
1196		ifmr->ifm_status |= IFM_ACTIVE;
1197		ifmr->ifm_active |= (IFM_FDX | qla_get_optics(ha));
1198	}
1199
1200	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit (%s)\n", __func__,\
1201		(ha->hw.link_up ? "link_up" : "link_down")));
1202
1203	return;
1204}
1205
1206
1207static int
1208qla_send(qla_host_t *ha, struct mbuf **m_headp, uint32_t txr_idx,
1209	uint32_t iscsi_pdu)
1210{
1211	bus_dma_segment_t	segs[QLA_MAX_SEGMENTS];
1212	bus_dmamap_t		map;
1213	int			nsegs;
1214	int			ret = -1;
1215	uint32_t		tx_idx;
1216	struct mbuf		*m_head = *m_headp;
1217
1218	QL_DPRINT8(ha, (ha->pci_dev, "%s: enter\n", __func__));
1219
1220	tx_idx = ha->hw.tx_cntxt[txr_idx].txr_next;
1221	map = ha->tx_ring[txr_idx].tx_buf[tx_idx].map;
1222
1223	ret = bus_dmamap_load_mbuf_sg(ha->tx_tag, map, m_head, segs, &nsegs,
1224			BUS_DMA_NOWAIT);
1225
1226	if (ret == EFBIG) {
1227
1228		struct mbuf *m;
1229
1230		QL_DPRINT8(ha, (ha->pci_dev, "%s: EFBIG [%d]\n", __func__,
1231			m_head->m_pkthdr.len));
1232
1233		m = m_defrag(m_head, M_NOWAIT);
1234		if (m == NULL) {
1235			ha->err_tx_defrag++;
1236			m_freem(m_head);
1237			*m_headp = NULL;
1238			device_printf(ha->pci_dev,
1239				"%s: m_defrag() = NULL [%d]\n",
1240				__func__, ret);
1241			return (ENOBUFS);
1242		}
1243		m_head = m;
1244		*m_headp = m_head;
1245
1246		if ((ret = bus_dmamap_load_mbuf_sg(ha->tx_tag, map, m_head,
1247					segs, &nsegs, BUS_DMA_NOWAIT))) {
1248
1249			ha->err_tx_dmamap_load++;
1250
1251			device_printf(ha->pci_dev,
1252				"%s: bus_dmamap_load_mbuf_sg failed0[%d, %d]\n",
1253				__func__, ret, m_head->m_pkthdr.len);
1254
1255			if (ret != ENOMEM) {
1256				m_freem(m_head);
1257				*m_headp = NULL;
1258			}
1259			return (ret);
1260		}
1261
1262	} else if (ret) {
1263
1264		ha->err_tx_dmamap_load++;
1265
1266		device_printf(ha->pci_dev,
1267			"%s: bus_dmamap_load_mbuf_sg failed1[%d, %d]\n",
1268			__func__, ret, m_head->m_pkthdr.len);
1269
1270		if (ret != ENOMEM) {
1271			m_freem(m_head);
1272			*m_headp = NULL;
1273		}
1274		return (ret);
1275	}
1276
1277	QL_ASSERT(ha, (nsegs != 0), ("qla_send: empty packet"));
1278
1279	bus_dmamap_sync(ha->tx_tag, map, BUS_DMASYNC_PREWRITE);
1280
1281        if (!(ret = ql_hw_send(ha, segs, nsegs, tx_idx, m_head, txr_idx,
1282				iscsi_pdu))) {
1283		ha->tx_ring[txr_idx].count++;
1284		if (iscsi_pdu)
1285			ha->tx_ring[txr_idx].iscsi_pkt_count++;
1286		ha->tx_ring[txr_idx].tx_buf[tx_idx].m_head = m_head;
1287	} else {
1288		if (ret == EINVAL) {
1289			if (m_head)
1290				m_freem(m_head);
1291			*m_headp = NULL;
1292		}
1293	}
1294
1295	QL_DPRINT8(ha, (ha->pci_dev, "%s: exit\n", __func__));
1296	return (ret);
1297}
1298
1299static int
1300qla_alloc_tx_br(qla_host_t *ha, qla_tx_fp_t *fp)
1301{
1302        snprintf(fp->tx_mtx_name, sizeof(fp->tx_mtx_name),
1303                "qla%d_fp%d_tx_mq_lock", ha->pci_func, fp->txr_idx);
1304
1305        mtx_init(&fp->tx_mtx, fp->tx_mtx_name, NULL, MTX_DEF);
1306
1307        fp->tx_br = buf_ring_alloc(NUM_TX_DESCRIPTORS, M_DEVBUF,
1308                                   M_NOWAIT, &fp->tx_mtx);
1309        if (fp->tx_br == NULL) {
1310            QL_DPRINT1(ha, (ha->pci_dev, "buf_ring_alloc failed for "
1311                " fp[%d, %d]\n", ha->pci_func, fp->txr_idx));
1312            return (-ENOMEM);
1313        }
1314        return 0;
1315}
1316
1317static void
1318qla_free_tx_br(qla_host_t *ha, qla_tx_fp_t *fp)
1319{
1320        struct mbuf *mp;
1321        struct ifnet *ifp = ha->ifp;
1322
1323        if (mtx_initialized(&fp->tx_mtx)) {
1324
1325                if (fp->tx_br != NULL) {
1326
1327                        mtx_lock(&fp->tx_mtx);
1328
1329                        while ((mp = drbr_dequeue(ifp, fp->tx_br)) != NULL) {
1330                                m_freem(mp);
1331                        }
1332
1333                        mtx_unlock(&fp->tx_mtx);
1334
1335                        buf_ring_free(fp->tx_br, M_DEVBUF);
1336                        fp->tx_br = NULL;
1337                }
1338                mtx_destroy(&fp->tx_mtx);
1339        }
1340        return;
1341}
1342
1343static void
1344qla_fp_taskqueue(void *context, int pending)
1345{
1346        qla_tx_fp_t *fp;
1347        qla_host_t *ha;
1348        struct ifnet *ifp;
1349        struct mbuf  *mp;
1350        int ret;
1351	uint32_t txr_idx;
1352	uint32_t iscsi_pdu = 0;
1353	uint32_t rx_pkts_left = -1;
1354
1355        fp = context;
1356
1357        if (fp == NULL)
1358                return;
1359
1360        ha = (qla_host_t *)fp->ha;
1361
1362        ifp = ha->ifp;
1363
1364	txr_idx = fp->txr_idx;
1365
1366        mtx_lock(&fp->tx_mtx);
1367
1368        if (!(ifp->if_drv_flags & IFF_DRV_RUNNING) || (!ha->hw.link_up)) {
1369                mtx_unlock(&fp->tx_mtx);
1370                goto qla_fp_taskqueue_exit;
1371        }
1372
1373	while (rx_pkts_left && !ha->stop_rcv) {
1374		rx_pkts_left = ql_rcv_isr(ha, fp->txr_idx, 64);
1375
1376#ifdef QL_ENABLE_ISCSI_TLV
1377		ql_hw_tx_done_locked(ha, fp->txr_idx);
1378		ql_hw_tx_done_locked(ha, (fp->txr_idx + (ha->hw.num_tx_rings >> 1)));
1379#else
1380		ql_hw_tx_done_locked(ha, fp->txr_idx);
1381#endif /* #ifdef QL_ENABLE_ISCSI_TLV */
1382
1383		mp = drbr_peek(ifp, fp->tx_br);
1384
1385        	while (mp != NULL) {
1386
1387			if (M_HASHTYPE_GET(mp) != M_HASHTYPE_NONE) {
1388#ifdef QL_ENABLE_ISCSI_TLV
1389				if (ql_iscsi_pdu(ha, mp) == 0) {
1390					txr_idx = txr_idx +
1391						(ha->hw.num_tx_rings >> 1);
1392					iscsi_pdu = 1;
1393				} else {
1394					iscsi_pdu = 0;
1395					txr_idx = fp->txr_idx;
1396				}
1397#endif /* #ifdef QL_ENABLE_ISCSI_TLV */
1398			}
1399
1400			ret = qla_send(ha, &mp, txr_idx, iscsi_pdu);
1401
1402			if (ret) {
1403				if (mp != NULL)
1404					drbr_putback(ifp, fp->tx_br, mp);
1405				else {
1406					drbr_advance(ifp, fp->tx_br);
1407				}
1408
1409				mtx_unlock(&fp->tx_mtx);
1410
1411				goto qla_fp_taskqueue_exit0;
1412			} else {
1413				drbr_advance(ifp, fp->tx_br);
1414			}
1415
1416			mp = drbr_peek(ifp, fp->tx_br);
1417		}
1418	}
1419        mtx_unlock(&fp->tx_mtx);
1420
1421qla_fp_taskqueue_exit0:
1422
1423	if (rx_pkts_left || ((mp != NULL) && ret)) {
1424		taskqueue_enqueue(fp->fp_taskqueue, &fp->fp_task);
1425	} else {
1426		if (!ha->stop_rcv) {
1427			QL_ENABLE_INTERRUPTS(ha, fp->txr_idx);
1428		}
1429	}
1430
1431qla_fp_taskqueue_exit:
1432
1433        QL_DPRINT2(ha, (ha->pci_dev, "%s: exit ret = %d\n", __func__, ret));
1434        return;
1435}
1436
1437static int
1438qla_create_fp_taskqueues(qla_host_t *ha)
1439{
1440        int     i;
1441        uint8_t tq_name[32];
1442
1443        for (i = 0; i < ha->hw.num_sds_rings; i++) {
1444
1445                qla_tx_fp_t *fp = &ha->tx_fp[i];
1446
1447                bzero(tq_name, sizeof (tq_name));
1448                snprintf(tq_name, sizeof (tq_name), "ql_fp_tq_%d", i);
1449
1450                TASK_INIT(&fp->fp_task, 0, qla_fp_taskqueue, fp);
1451
1452                fp->fp_taskqueue = taskqueue_create_fast(tq_name, M_NOWAIT,
1453                                        taskqueue_thread_enqueue,
1454                                        &fp->fp_taskqueue);
1455
1456                if (fp->fp_taskqueue == NULL)
1457                        return (-1);
1458
1459                taskqueue_start_threads(&fp->fp_taskqueue, 1, PI_NET, "%s",
1460                        tq_name);
1461
1462                QL_DPRINT1(ha, (ha->pci_dev, "%s: %p\n", __func__,
1463                        fp->fp_taskqueue));
1464        }
1465
1466        return (0);
1467}
1468
1469static void
1470qla_destroy_fp_taskqueues(qla_host_t *ha)
1471{
1472        int     i;
1473
1474        for (i = 0; i < ha->hw.num_sds_rings; i++) {
1475
1476                qla_tx_fp_t *fp = &ha->tx_fp[i];
1477
1478                if (fp->fp_taskqueue != NULL) {
1479                        taskqueue_drain(fp->fp_taskqueue, &fp->fp_task);
1480                        taskqueue_free(fp->fp_taskqueue);
1481                        fp->fp_taskqueue = NULL;
1482                }
1483        }
1484        return;
1485}
1486
1487static void
1488qla_drain_fp_taskqueues(qla_host_t *ha)
1489{
1490        int     i;
1491
1492        for (i = 0; i < ha->hw.num_sds_rings; i++) {
1493                qla_tx_fp_t *fp = &ha->tx_fp[i];
1494
1495                if (fp->fp_taskqueue != NULL) {
1496                        taskqueue_drain(fp->fp_taskqueue, &fp->fp_task);
1497                }
1498        }
1499        return;
1500}
1501
1502static int
1503qla_transmit(struct ifnet *ifp, struct mbuf  *mp)
1504{
1505	qla_host_t *ha = (qla_host_t *)ifp->if_softc;
1506        qla_tx_fp_t *fp;
1507        int rss_id = 0;
1508        int ret = 0;
1509
1510        QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
1511
1512#if __FreeBSD_version >= 1100000
1513        if (M_HASHTYPE_GET(mp) != M_HASHTYPE_NONE)
1514#else
1515        if (mp->m_flags & M_FLOWID)
1516#endif
1517                rss_id = (mp->m_pkthdr.flowid & Q8_RSS_IND_TBL_MAX_IDX) %
1518                                        ha->hw.num_sds_rings;
1519        fp = &ha->tx_fp[rss_id];
1520
1521        if (fp->tx_br == NULL) {
1522                ret = EINVAL;
1523                goto qla_transmit_exit;
1524        }
1525
1526        if (mp != NULL) {
1527                ret = drbr_enqueue(ifp, fp->tx_br, mp);
1528        }
1529
1530        if (fp->fp_taskqueue != NULL)
1531                taskqueue_enqueue(fp->fp_taskqueue, &fp->fp_task);
1532
1533        ret = 0;
1534
1535qla_transmit_exit:
1536
1537        QL_DPRINT2(ha, (ha->pci_dev, "%s: exit ret = %d\n", __func__, ret));
1538        return ret;
1539}
1540
1541static void
1542qla_qflush(struct ifnet *ifp)
1543{
1544        int                     i;
1545        qla_tx_fp_t		*fp;
1546        struct mbuf             *mp;
1547        qla_host_t              *ha;
1548
1549        ha = (qla_host_t *)ifp->if_softc;
1550
1551        QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
1552
1553        for (i = 0; i < ha->hw.num_sds_rings; i++) {
1554
1555                fp = &ha->tx_fp[i];
1556
1557                if (fp == NULL)
1558                        continue;
1559
1560                if (fp->tx_br) {
1561                        mtx_lock(&fp->tx_mtx);
1562
1563                        while ((mp = drbr_dequeue(ifp, fp->tx_br)) != NULL) {
1564                                m_freem(mp);
1565                        }
1566                        mtx_unlock(&fp->tx_mtx);
1567                }
1568        }
1569        QL_DPRINT2(ha, (ha->pci_dev, "%s: exit\n", __func__));
1570
1571        return;
1572}
1573
1574static void
1575qla_stop(qla_host_t *ha)
1576{
1577	struct ifnet *ifp = ha->ifp;
1578	device_t	dev;
1579	int i = 0;
1580
1581	dev = ha->pci_dev;
1582
1583	ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1584	ha->qla_watchdog_pause = 1;
1585
1586        for (i = 0; i < ha->hw.num_sds_rings; i++) {
1587        	qla_tx_fp_t *fp;
1588
1589		fp = &ha->tx_fp[i];
1590
1591                if (fp == NULL)
1592                        continue;
1593
1594		if (fp->tx_br != NULL) {
1595                        mtx_lock(&fp->tx_mtx);
1596                        mtx_unlock(&fp->tx_mtx);
1597		}
1598	}
1599
1600	while (!ha->qla_watchdog_paused)
1601		qla_mdelay(__func__, 1);
1602
1603	ha->qla_interface_up = 0;
1604
1605	qla_drain_fp_taskqueues(ha);
1606
1607	ql_del_hw_if(ha);
1608
1609	qla_free_xmt_bufs(ha);
1610	qla_free_rcv_bufs(ha);
1611
1612	return;
1613}
1614
1615/*
1616 * Buffer Management Functions for Transmit and Receive Rings
1617 */
1618static int
1619qla_alloc_xmt_bufs(qla_host_t *ha)
1620{
1621	int ret = 0;
1622	uint32_t i, j;
1623	qla_tx_buf_t *txb;
1624
1625	if (bus_dma_tag_create(NULL,    /* parent */
1626		1, 0,    /* alignment, bounds */
1627		BUS_SPACE_MAXADDR,       /* lowaddr */
1628		BUS_SPACE_MAXADDR,       /* highaddr */
1629		NULL, NULL,      /* filter, filterarg */
1630		QLA_MAX_TSO_FRAME_SIZE,     /* maxsize */
1631		QLA_MAX_SEGMENTS,        /* nsegments */
1632		PAGE_SIZE,        /* maxsegsize */
1633		BUS_DMA_ALLOCNOW,        /* flags */
1634		NULL,    /* lockfunc */
1635		NULL,    /* lockfuncarg */
1636		&ha->tx_tag)) {
1637		device_printf(ha->pci_dev, "%s: tx_tag alloc failed\n",
1638			__func__);
1639		return (ENOMEM);
1640	}
1641
1642	for (i = 0; i < ha->hw.num_tx_rings; i++) {
1643		bzero((void *)ha->tx_ring[i].tx_buf,
1644			(sizeof(qla_tx_buf_t) * NUM_TX_DESCRIPTORS));
1645	}
1646
1647	for (j = 0; j < ha->hw.num_tx_rings; j++) {
1648		for (i = 0; i < NUM_TX_DESCRIPTORS; i++) {
1649
1650			txb = &ha->tx_ring[j].tx_buf[i];
1651
1652			if ((ret = bus_dmamap_create(ha->tx_tag,
1653					BUS_DMA_NOWAIT, &txb->map))) {
1654
1655				ha->err_tx_dmamap_create++;
1656				device_printf(ha->pci_dev,
1657					"%s: bus_dmamap_create failed[%d]\n",
1658					__func__, ret);
1659
1660				qla_free_xmt_bufs(ha);
1661
1662				return (ret);
1663			}
1664		}
1665	}
1666
1667	return 0;
1668}
1669
1670/*
1671 * Release mbuf after it sent on the wire
1672 */
1673static void
1674qla_clear_tx_buf(qla_host_t *ha, qla_tx_buf_t *txb)
1675{
1676	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
1677
1678	if (txb->m_head && txb->map) {
1679
1680		bus_dmamap_unload(ha->tx_tag, txb->map);
1681
1682		m_freem(txb->m_head);
1683		txb->m_head = NULL;
1684	}
1685
1686	if (txb->map)
1687		bus_dmamap_destroy(ha->tx_tag, txb->map);
1688
1689	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit\n", __func__));
1690}
1691
1692static void
1693qla_free_xmt_bufs(qla_host_t *ha)
1694{
1695	int		i, j;
1696
1697	for (j = 0; j < ha->hw.num_tx_rings; j++) {
1698		for (i = 0; i < NUM_TX_DESCRIPTORS; i++)
1699			qla_clear_tx_buf(ha, &ha->tx_ring[j].tx_buf[i]);
1700	}
1701
1702	if (ha->tx_tag != NULL) {
1703		bus_dma_tag_destroy(ha->tx_tag);
1704		ha->tx_tag = NULL;
1705	}
1706
1707	for (i = 0; i < ha->hw.num_tx_rings; i++) {
1708		bzero((void *)ha->tx_ring[i].tx_buf,
1709			(sizeof(qla_tx_buf_t) * NUM_TX_DESCRIPTORS));
1710	}
1711	return;
1712}
1713
1714
1715static int
1716qla_alloc_rcv_std(qla_host_t *ha)
1717{
1718	int		i, j, k, r, ret = 0;
1719	qla_rx_buf_t	*rxb;
1720	qla_rx_ring_t	*rx_ring;
1721
1722	for (r = 0; r < ha->hw.num_rds_rings; r++) {
1723
1724		rx_ring = &ha->rx_ring[r];
1725
1726		for (i = 0; i < NUM_RX_DESCRIPTORS; i++) {
1727
1728			rxb = &rx_ring->rx_buf[i];
1729
1730			ret = bus_dmamap_create(ha->rx_tag, BUS_DMA_NOWAIT,
1731					&rxb->map);
1732
1733			if (ret) {
1734				device_printf(ha->pci_dev,
1735					"%s: dmamap[%d, %d] failed\n",
1736					__func__, r, i);
1737
1738				for (k = 0; k < r; k++) {
1739					for (j = 0; j < NUM_RX_DESCRIPTORS;
1740						j++) {
1741						rxb = &ha->rx_ring[k].rx_buf[j];
1742						bus_dmamap_destroy(ha->rx_tag,
1743							rxb->map);
1744					}
1745				}
1746
1747				for (j = 0; j < i; j++) {
1748					bus_dmamap_destroy(ha->rx_tag,
1749						rx_ring->rx_buf[j].map);
1750				}
1751				goto qla_alloc_rcv_std_err;
1752			}
1753		}
1754	}
1755
1756	qla_init_hw_rcv_descriptors(ha);
1757
1758
1759	for (r = 0; r < ha->hw.num_rds_rings; r++) {
1760
1761		rx_ring = &ha->rx_ring[r];
1762
1763		for (i = 0; i < NUM_RX_DESCRIPTORS; i++) {
1764			rxb = &rx_ring->rx_buf[i];
1765			rxb->handle = i;
1766			if (!(ret = ql_get_mbuf(ha, rxb, NULL))) {
1767				/*
1768			 	 * set the physical address in the
1769				 * corresponding descriptor entry in the
1770				 * receive ring/queue for the hba
1771				 */
1772				qla_set_hw_rcv_desc(ha, r, i, rxb->handle,
1773					rxb->paddr,
1774					(rxb->m_head)->m_pkthdr.len);
1775			} else {
1776				device_printf(ha->pci_dev,
1777					"%s: ql_get_mbuf [%d, %d] failed\n",
1778					__func__, r, i);
1779				bus_dmamap_destroy(ha->rx_tag, rxb->map);
1780				goto qla_alloc_rcv_std_err;
1781			}
1782		}
1783	}
1784	return 0;
1785
1786qla_alloc_rcv_std_err:
1787	return (-1);
1788}
1789
1790static void
1791qla_free_rcv_std(qla_host_t *ha)
1792{
1793	int		i, r;
1794	qla_rx_buf_t	*rxb;
1795
1796	for (r = 0; r < ha->hw.num_rds_rings; r++) {
1797		for (i = 0; i < NUM_RX_DESCRIPTORS; i++) {
1798			rxb = &ha->rx_ring[r].rx_buf[i];
1799			if (rxb->m_head != NULL) {
1800				bus_dmamap_unload(ha->rx_tag, rxb->map);
1801				bus_dmamap_destroy(ha->rx_tag, rxb->map);
1802				m_freem(rxb->m_head);
1803				rxb->m_head = NULL;
1804			}
1805		}
1806	}
1807	return;
1808}
1809
1810static int
1811qla_alloc_rcv_bufs(qla_host_t *ha)
1812{
1813	int		i, ret = 0;
1814
1815	if (bus_dma_tag_create(NULL,    /* parent */
1816			1, 0,    /* alignment, bounds */
1817			BUS_SPACE_MAXADDR,       /* lowaddr */
1818			BUS_SPACE_MAXADDR,       /* highaddr */
1819			NULL, NULL,      /* filter, filterarg */
1820			MJUM9BYTES,     /* maxsize */
1821			1,        /* nsegments */
1822			MJUM9BYTES,        /* maxsegsize */
1823			BUS_DMA_ALLOCNOW,        /* flags */
1824			NULL,    /* lockfunc */
1825			NULL,    /* lockfuncarg */
1826			&ha->rx_tag)) {
1827
1828		device_printf(ha->pci_dev, "%s: rx_tag alloc failed\n",
1829			__func__);
1830
1831		return (ENOMEM);
1832	}
1833
1834	bzero((void *)ha->rx_ring, (sizeof(qla_rx_ring_t) * MAX_RDS_RINGS));
1835
1836	for (i = 0; i < ha->hw.num_sds_rings; i++) {
1837		ha->hw.sds[i].sdsr_next = 0;
1838		ha->hw.sds[i].rxb_free = NULL;
1839		ha->hw.sds[i].rx_free = 0;
1840	}
1841
1842	ret = qla_alloc_rcv_std(ha);
1843
1844	return (ret);
1845}
1846
1847static void
1848qla_free_rcv_bufs(qla_host_t *ha)
1849{
1850	int		i;
1851
1852	qla_free_rcv_std(ha);
1853
1854	if (ha->rx_tag != NULL) {
1855		bus_dma_tag_destroy(ha->rx_tag);
1856		ha->rx_tag = NULL;
1857	}
1858
1859	bzero((void *)ha->rx_ring, (sizeof(qla_rx_ring_t) * MAX_RDS_RINGS));
1860
1861	for (i = 0; i < ha->hw.num_sds_rings; i++) {
1862		ha->hw.sds[i].sdsr_next = 0;
1863		ha->hw.sds[i].rxb_free = NULL;
1864		ha->hw.sds[i].rx_free = 0;
1865	}
1866
1867	return;
1868}
1869
1870int
1871ql_get_mbuf(qla_host_t *ha, qla_rx_buf_t *rxb, struct mbuf *nmp)
1872{
1873	register struct mbuf *mp = nmp;
1874	struct ifnet   		*ifp;
1875	int            		ret = 0;
1876	uint32_t		offset;
1877	bus_dma_segment_t	segs[1];
1878	int			nsegs, mbuf_size;
1879
1880	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
1881
1882	ifp = ha->ifp;
1883
1884        if (ha->hw.enable_9kb)
1885                mbuf_size = MJUM9BYTES;
1886        else
1887                mbuf_size = MCLBYTES;
1888
1889	if (mp == NULL) {
1890
1891		if (QL_ERR_INJECT(ha, INJCT_M_GETCL_M_GETJCL_FAILURE))
1892			return(-1);
1893
1894                if (ha->hw.enable_9kb)
1895                        mp = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, mbuf_size);
1896                else
1897                        mp = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1898
1899		if (mp == NULL) {
1900			ha->err_m_getcl++;
1901			ret = ENOBUFS;
1902			device_printf(ha->pci_dev,
1903					"%s: m_getcl failed\n", __func__);
1904			goto exit_ql_get_mbuf;
1905		}
1906		mp->m_len = mp->m_pkthdr.len = mbuf_size;
1907	} else {
1908		mp->m_len = mp->m_pkthdr.len = mbuf_size;
1909		mp->m_data = mp->m_ext.ext_buf;
1910		mp->m_next = NULL;
1911	}
1912
1913	offset = (uint32_t)((unsigned long long)mp->m_data & 0x7ULL);
1914	if (offset) {
1915		offset = 8 - offset;
1916		m_adj(mp, offset);
1917	}
1918
1919	/*
1920	 * Using memory from the mbuf cluster pool, invoke the bus_dma
1921	 * machinery to arrange the memory mapping.
1922	 */
1923	ret = bus_dmamap_load_mbuf_sg(ha->rx_tag, rxb->map,
1924			mp, segs, &nsegs, BUS_DMA_NOWAIT);
1925	rxb->paddr = segs[0].ds_addr;
1926
1927	if (ret || !rxb->paddr || (nsegs != 1)) {
1928		m_free(mp);
1929		rxb->m_head = NULL;
1930		device_printf(ha->pci_dev,
1931			"%s: bus_dmamap_load failed[%d, 0x%016llx, %d]\n",
1932			__func__, ret, (long long unsigned int)rxb->paddr,
1933			nsegs);
1934                ret = -1;
1935		goto exit_ql_get_mbuf;
1936	}
1937	rxb->m_head = mp;
1938	bus_dmamap_sync(ha->rx_tag, rxb->map, BUS_DMASYNC_PREREAD);
1939
1940exit_ql_get_mbuf:
1941	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit ret = 0x%08x\n", __func__, ret));
1942	return (ret);
1943}
1944
1945
1946static void
1947qla_get_peer(qla_host_t *ha)
1948{
1949	device_t *peers;
1950	int count, i, slot;
1951	int my_slot = pci_get_slot(ha->pci_dev);
1952
1953	if (device_get_children(device_get_parent(ha->pci_dev), &peers, &count))
1954		return;
1955
1956	for (i = 0; i < count; i++) {
1957		slot = pci_get_slot(peers[i]);
1958
1959		if ((slot >= 0) && (slot == my_slot) &&
1960			(pci_get_device(peers[i]) ==
1961				pci_get_device(ha->pci_dev))) {
1962			if (ha->pci_dev != peers[i])
1963				ha->peer_dev = peers[i];
1964		}
1965	}
1966}
1967
1968static void
1969qla_send_msg_to_peer(qla_host_t *ha, uint32_t msg_to_peer)
1970{
1971	qla_host_t *ha_peer;
1972
1973	if (ha->peer_dev) {
1974        	if ((ha_peer = device_get_softc(ha->peer_dev)) != NULL) {
1975
1976			ha_peer->msg_from_peer = msg_to_peer;
1977		}
1978	}
1979}
1980
1981static void
1982qla_error_recovery(void *context, int pending)
1983{
1984	qla_host_t *ha = context;
1985	uint32_t msecs_100 = 100;
1986	struct ifnet *ifp = ha->ifp;
1987	int i = 0;
1988
1989device_printf(ha->pci_dev, "%s: \n", __func__);
1990	ha->hw.imd_compl = 1;
1991
1992	if (QLA_LOCK(ha, __func__, -1, 0) != 0)
1993		return;
1994
1995device_printf(ha->pci_dev, "%s: enter\n", __func__);
1996
1997	if (ha->qla_interface_up) {
1998
1999		qla_mdelay(__func__, 300);
2000
2001	        ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
2002
2003		for (i = 0; i < ha->hw.num_sds_rings; i++) {
2004	        	qla_tx_fp_t *fp;
2005
2006			fp = &ha->tx_fp[i];
2007
2008			if (fp == NULL)
2009				continue;
2010
2011			if (fp->tx_br != NULL) {
2012				mtx_lock(&fp->tx_mtx);
2013				mtx_unlock(&fp->tx_mtx);
2014			}
2015		}
2016	}
2017
2018
2019	qla_drain_fp_taskqueues(ha);
2020
2021	if ((ha->pci_func & 0x1) == 0) {
2022
2023		if (!ha->msg_from_peer) {
2024			qla_send_msg_to_peer(ha, QL_PEER_MSG_RESET);
2025
2026			while ((ha->msg_from_peer != QL_PEER_MSG_ACK) &&
2027				msecs_100--)
2028				qla_mdelay(__func__, 100);
2029		}
2030
2031		ha->msg_from_peer = 0;
2032
2033		ql_minidump(ha);
2034
2035		(void) ql_init_hw(ha);
2036
2037		if (ha->qla_interface_up) {
2038			qla_free_xmt_bufs(ha);
2039			qla_free_rcv_bufs(ha);
2040		}
2041
2042		qla_send_msg_to_peer(ha, QL_PEER_MSG_ACK);
2043
2044	} else {
2045		if (ha->msg_from_peer == QL_PEER_MSG_RESET) {
2046
2047			ha->msg_from_peer = 0;
2048
2049			qla_send_msg_to_peer(ha, QL_PEER_MSG_ACK);
2050		} else {
2051			qla_send_msg_to_peer(ha, QL_PEER_MSG_RESET);
2052		}
2053
2054		while ((ha->msg_from_peer != QL_PEER_MSG_ACK)  && msecs_100--)
2055			qla_mdelay(__func__, 100);
2056		ha->msg_from_peer = 0;
2057
2058		(void) ql_init_hw(ha);
2059
2060		qla_mdelay(__func__, 1000);
2061
2062		if (ha->qla_interface_up) {
2063			qla_free_xmt_bufs(ha);
2064			qla_free_rcv_bufs(ha);
2065		}
2066	}
2067
2068	if (ha->qla_interface_up) {
2069
2070		if (qla_alloc_xmt_bufs(ha) != 0) {
2071			goto qla_error_recovery_exit;
2072		}
2073		qla_confirm_9kb_enable(ha);
2074
2075		if (qla_alloc_rcv_bufs(ha) != 0) {
2076			goto qla_error_recovery_exit;
2077		}
2078
2079		ha->stop_rcv = 0;
2080
2081		if (ql_init_hw_if(ha) == 0) {
2082			ifp = ha->ifp;
2083			ifp->if_drv_flags |= IFF_DRV_RUNNING;
2084			ha->qla_watchdog_pause = 0;
2085		}
2086	} else
2087		ha->qla_watchdog_pause = 0;
2088
2089qla_error_recovery_exit:
2090
2091device_printf(ha->pci_dev, "%s: exit\n", __func__);
2092
2093        QLA_UNLOCK(ha, __func__);
2094
2095	callout_reset(&ha->tx_callout, QLA_WATCHDOG_CALLOUT_TICKS,
2096		qla_watchdog, ha);
2097	return;
2098}
2099
2100static void
2101qla_async_event(void *context, int pending)
2102{
2103        qla_host_t *ha = context;
2104
2105	if (QLA_LOCK(ha, __func__, -1, 0) != 0)
2106		return;
2107
2108	if (ha->async_event) {
2109		ha->async_event = 0;
2110        	qla_hw_async_event(ha);
2111	}
2112
2113	QLA_UNLOCK(ha, __func__);
2114
2115	return;
2116}
2117
2118static void
2119qla_stats(void *context, int pending)
2120{
2121        qla_host_t *ha;
2122
2123        ha = context;
2124
2125	ql_get_stats(ha);
2126	return;
2127}
2128
2129