ql_os.c revision 324761 
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/11/sys/dev/qlxgbe/ql_os.c 324761 2017-10-19 17:28:09Z 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->enable_minidump = 1;
189	SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
190		SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
191		OID_AUTO, "enable_minidump", CTLFLAG_RW,
192		&ha->enable_minidump, ha->enable_minidump,
193		"Minidump retrival is enabled only when this is set");
194
195	ha->std_replenish = QL_STD_REPLENISH_THRES;
196        SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
197                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
198                OID_AUTO, "std_replenish", CTLFLAG_RW,
199                &ha->std_replenish, ha->std_replenish,
200                "Threshold for Replenishing Standard Frames");
201
202        SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
203                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
204                OID_AUTO, "ipv4_lro",
205                CTLFLAG_RD, &ha->ipv4_lro,
206                "number of ipv4 lro completions");
207
208        SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
209                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
210                OID_AUTO, "ipv6_lro",
211                CTLFLAG_RD, &ha->ipv6_lro,
212                "number of ipv6 lro completions");
213
214	SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
215		SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
216		OID_AUTO, "tx_tso_frames",
217		CTLFLAG_RD, &ha->tx_tso_frames,
218		"number of Tx TSO Frames");
219
220	SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
221                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
222		OID_AUTO, "hw_vlan_tx_frames",
223		CTLFLAG_RD, &ha->hw_vlan_tx_frames,
224		"number of Tx VLAN Frames");
225
226	SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
227                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
228		OID_AUTO, "hw_lock_failed",
229		CTLFLAG_RD, &ha->hw_lock_failed,
230		"number of hw_lock failures");
231
232        return;
233}
234
235static void
236qla_watchdog(void *arg)
237{
238	qla_host_t *ha = arg;
239	qla_hw_t *hw;
240	struct ifnet *ifp;
241
242	hw = &ha->hw;
243	ifp = ha->ifp;
244
245        if (ha->qla_watchdog_exit) {
246		ha->qla_watchdog_exited = 1;
247		return;
248	}
249	ha->qla_watchdog_exited = 0;
250
251	if (!ha->qla_watchdog_pause) {
252		if (ql_hw_check_health(ha) || ha->qla_initiate_recovery ||
253			(ha->msg_from_peer == QL_PEER_MSG_RESET)) {
254
255			if (!(ha->dbg_level & 0x8000)) {
256				ha->qla_watchdog_paused = 1;
257				ha->qla_watchdog_pause = 1;
258				ha->qla_initiate_recovery = 0;
259				ha->err_inject = 0;
260				device_printf(ha->pci_dev,
261					"%s: taskqueue_enqueue(err_task) \n",
262					__func__);
263				taskqueue_enqueue(ha->err_tq, &ha->err_task);
264				return;
265			}
266
267		} else if (ha->qla_interface_up) {
268
269			ha->watchdog_ticks++;
270
271			if (ha->watchdog_ticks > 1000)
272				ha->watchdog_ticks = 0;
273
274                        if (!ha->watchdog_ticks && QL_RUNNING(ifp)) {
275                                taskqueue_enqueue(ha->stats_tq, &ha->stats_task);
276                        }
277
278                        if (ha->async_event) {
279                                taskqueue_enqueue(ha->async_event_tq,
280                                        &ha->async_event_task);
281                        }
282
283#if 0
284			for (i = 0; ((i < ha->hw.num_sds_rings) &&
285					!ha->watchdog_ticks); i++) {
286				qla_tx_fp_t *fp = &ha->tx_fp[i];
287
288				if (fp->fp_taskqueue != NULL)
289					taskqueue_enqueue(fp->fp_taskqueue,
290						&fp->fp_task);
291			}
292#endif
293			ha->qla_watchdog_paused = 0;
294		} else {
295			ha->qla_watchdog_paused = 0;
296		}
297	} else {
298		ha->qla_watchdog_paused = 1;
299	}
300
301	callout_reset(&ha->tx_callout, QLA_WATCHDOG_CALLOUT_TICKS,
302		qla_watchdog, ha);
303}
304
305/*
306 * Name:	qla_pci_attach
307 * Function:	attaches the device to the operating system
308 */
309static int
310qla_pci_attach(device_t dev)
311{
312	qla_host_t *ha = NULL;
313	uint32_t rsrc_len;
314	int i;
315	uint32_t num_rcvq = 0;
316
317        if ((ha = device_get_softc(dev)) == NULL) {
318                device_printf(dev, "cannot get softc\n");
319                return (ENOMEM);
320        }
321
322        memset(ha, 0, sizeof (qla_host_t));
323
324        if (pci_get_device(dev) != PCI_PRODUCT_QLOGIC_ISP8030) {
325                device_printf(dev, "device is not ISP8030\n");
326                return (ENXIO);
327	}
328
329        ha->pci_func = pci_get_function(dev) & 0x1;
330
331        ha->pci_dev = dev;
332
333	pci_enable_busmaster(dev);
334
335	ha->reg_rid = PCIR_BAR(0);
336	ha->pci_reg = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &ha->reg_rid,
337				RF_ACTIVE);
338
339        if (ha->pci_reg == NULL) {
340                device_printf(dev, "unable to map any ports\n");
341                goto qla_pci_attach_err;
342        }
343
344	rsrc_len = (uint32_t) bus_get_resource_count(dev, SYS_RES_MEMORY,
345					ha->reg_rid);
346
347	mtx_init(&ha->hw_lock, "qla83xx_hw_lock", MTX_NETWORK_LOCK, MTX_DEF);
348	ha->flags.lock_init = 1;
349
350	qla_add_sysctls(ha);
351
352	ha->hw.num_sds_rings = MAX_SDS_RINGS;
353	ha->hw.num_rds_rings = MAX_RDS_RINGS;
354	ha->hw.num_tx_rings = NUM_TX_RINGS;
355
356	ha->reg_rid1 = PCIR_BAR(2);
357	ha->pci_reg1 = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
358			&ha->reg_rid1, RF_ACTIVE);
359
360	ha->msix_count = pci_msix_count(dev);
361
362	if (ha->msix_count < 1 ) {
363		device_printf(dev, "%s: msix_count[%d] not enough\n", __func__,
364			ha->msix_count);
365		goto qla_pci_attach_err;
366	}
367
368	if (ha->msix_count < (ha->hw.num_sds_rings + 1)) {
369		ha->hw.num_sds_rings = ha->msix_count - 1;
370	}
371
372	QL_DPRINT2(ha, (dev, "%s: ha %p pci_func 0x%x rsrc_count 0x%08x"
373		" msix_count 0x%x pci_reg %p pci_reg1 %p\n", __func__, ha,
374		ha->pci_func, rsrc_len, ha->msix_count, ha->pci_reg,
375		ha->pci_reg1));
376
377        /* initialize hardware */
378        if (ql_init_hw(ha)) {
379                device_printf(dev, "%s: ql_init_hw failed\n", __func__);
380                goto qla_pci_attach_err;
381        }
382
383        device_printf(dev, "%s: firmware[%d.%d.%d.%d]\n", __func__,
384                ha->fw_ver_major, ha->fw_ver_minor, ha->fw_ver_sub,
385                ha->fw_ver_build);
386        snprintf(ha->fw_ver_str, sizeof(ha->fw_ver_str), "%d.%d.%d.%d",
387                        ha->fw_ver_major, ha->fw_ver_minor, ha->fw_ver_sub,
388                        ha->fw_ver_build);
389
390        if (qla_get_nic_partition(ha, NULL, &num_rcvq)) {
391                device_printf(dev, "%s: qla_get_nic_partition failed\n",
392                        __func__);
393                goto qla_pci_attach_err;
394        }
395        device_printf(dev, "%s: ha %p pci_func 0x%x rsrc_count 0x%08x"
396                " msix_count 0x%x pci_reg %p pci_reg1 %p num_rcvq = %d\n",
397		__func__, ha, ha->pci_func, rsrc_len, ha->msix_count,
398		ha->pci_reg, ha->pci_reg1, num_rcvq);
399
400        if ((ha->msix_count  < 64) || (num_rcvq != 32)) {
401		if (ha->hw.num_sds_rings > 15) {
402                	ha->hw.num_sds_rings = 15;
403		}
404        }
405
406	ha->hw.num_rds_rings = ha->hw.num_sds_rings;
407	ha->hw.num_tx_rings = ha->hw.num_sds_rings;
408
409#ifdef QL_ENABLE_ISCSI_TLV
410	ha->hw.num_tx_rings = ha->hw.num_sds_rings * 2;
411#endif /* #ifdef QL_ENABLE_ISCSI_TLV */
412
413	ql_hw_add_sysctls(ha);
414
415	ha->msix_count = ha->hw.num_sds_rings + 1;
416
417	if (pci_alloc_msix(dev, &ha->msix_count)) {
418		device_printf(dev, "%s: pci_alloc_msi[%d] failed\n", __func__,
419			ha->msix_count);
420		ha->msix_count = 0;
421		goto qla_pci_attach_err;
422	}
423
424	ha->mbx_irq_rid = 1;
425	ha->mbx_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
426				&ha->mbx_irq_rid,
427				(RF_ACTIVE | RF_SHAREABLE));
428	if (ha->mbx_irq == NULL) {
429		device_printf(dev, "could not allocate mbx interrupt\n");
430		goto qla_pci_attach_err;
431	}
432	if (bus_setup_intr(dev, ha->mbx_irq, (INTR_TYPE_NET | INTR_MPSAFE),
433		NULL, ql_mbx_isr, ha, &ha->mbx_handle)) {
434		device_printf(dev, "could not setup mbx interrupt\n");
435		goto qla_pci_attach_err;
436	}
437
438	for (i = 0; i < ha->hw.num_sds_rings; i++) {
439		ha->irq_vec[i].sds_idx = i;
440                ha->irq_vec[i].ha = ha;
441                ha->irq_vec[i].irq_rid = 2 + i;
442
443		ha->irq_vec[i].irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
444				&ha->irq_vec[i].irq_rid,
445				(RF_ACTIVE | RF_SHAREABLE));
446
447		if (ha->irq_vec[i].irq == NULL) {
448			device_printf(dev, "could not allocate interrupt\n");
449			goto qla_pci_attach_err;
450		}
451		if (bus_setup_intr(dev, ha->irq_vec[i].irq,
452			(INTR_TYPE_NET | INTR_MPSAFE),
453			NULL, ql_isr, &ha->irq_vec[i],
454			&ha->irq_vec[i].handle)) {
455			device_printf(dev, "could not setup interrupt\n");
456			goto qla_pci_attach_err;
457		}
458
459		ha->tx_fp[i].ha = ha;
460		ha->tx_fp[i].txr_idx = i;
461
462		if (qla_alloc_tx_br(ha, &ha->tx_fp[i])) {
463			device_printf(dev, "%s: could not allocate tx_br[%d]\n",
464				__func__, i);
465			goto qla_pci_attach_err;
466		}
467	}
468
469	if (qla_create_fp_taskqueues(ha) != 0)
470		goto qla_pci_attach_err;
471
472	printf("%s: mp__ncpus %d sds %d rds %d msi-x %d\n", __func__, mp_ncpus,
473		ha->hw.num_sds_rings, ha->hw.num_rds_rings, ha->msix_count);
474
475	ql_read_mac_addr(ha);
476
477	/* allocate parent dma tag */
478	if (qla_alloc_parent_dma_tag(ha)) {
479		device_printf(dev, "%s: qla_alloc_parent_dma_tag failed\n",
480			__func__);
481		goto qla_pci_attach_err;
482	}
483
484	/* alloc all dma buffers */
485	if (ql_alloc_dma(ha)) {
486		device_printf(dev, "%s: ql_alloc_dma failed\n", __func__);
487		goto qla_pci_attach_err;
488	}
489	qla_get_peer(ha);
490
491	if (ql_minidump_init(ha) != 0) {
492		device_printf(dev, "%s: ql_minidump_init failed\n", __func__);
493		goto qla_pci_attach_err;
494	}
495	/* create the o.s ethernet interface */
496	qla_init_ifnet(dev, ha);
497
498	ha->flags.qla_watchdog_active = 1;
499	ha->qla_watchdog_pause = 0;
500
501	callout_init(&ha->tx_callout, TRUE);
502	ha->flags.qla_callout_init = 1;
503
504	/* create ioctl device interface */
505	if (ql_make_cdev(ha)) {
506		device_printf(dev, "%s: ql_make_cdev failed\n", __func__);
507		goto qla_pci_attach_err;
508	}
509
510	callout_reset(&ha->tx_callout, QLA_WATCHDOG_CALLOUT_TICKS,
511		qla_watchdog, ha);
512
513	TASK_INIT(&ha->err_task, 0, qla_error_recovery, ha);
514	ha->err_tq = taskqueue_create("qla_errq", M_NOWAIT,
515			taskqueue_thread_enqueue, &ha->err_tq);
516	taskqueue_start_threads(&ha->err_tq, 1, PI_NET, "%s errq",
517		device_get_nameunit(ha->pci_dev));
518
519        TASK_INIT(&ha->async_event_task, 0, qla_async_event, ha);
520        ha->async_event_tq = taskqueue_create("qla_asyncq", M_NOWAIT,
521                        taskqueue_thread_enqueue, &ha->async_event_tq);
522        taskqueue_start_threads(&ha->async_event_tq, 1, PI_NET, "%s asyncq",
523                device_get_nameunit(ha->pci_dev));
524
525        TASK_INIT(&ha->stats_task, 0, qla_stats, ha);
526        ha->stats_tq = taskqueue_create("qla_statsq", M_NOWAIT,
527                        taskqueue_thread_enqueue, &ha->stats_tq);
528        taskqueue_start_threads(&ha->stats_tq, 1, PI_NET, "%s taskq",
529                device_get_nameunit(ha->pci_dev));
530
531	QL_DPRINT2(ha, (dev, "%s: exit 0\n", __func__));
532        return (0);
533
534qla_pci_attach_err:
535
536	qla_release(ha);
537
538	if (ha->flags.lock_init) {
539		mtx_destroy(&ha->hw_lock);
540	}
541
542	QL_DPRINT2(ha, (dev, "%s: exit ENXIO\n", __func__));
543        return (ENXIO);
544}
545
546/*
547 * Name:	qla_pci_detach
548 * Function:	Unhooks the device from the operating system
549 */
550static int
551qla_pci_detach(device_t dev)
552{
553	qla_host_t *ha = NULL;
554	struct ifnet *ifp;
555
556
557        if ((ha = device_get_softc(dev)) == NULL) {
558                device_printf(dev, "cannot get softc\n");
559                return (ENOMEM);
560        }
561
562	QL_DPRINT2(ha, (dev, "%s: enter\n", __func__));
563
564	ifp = ha->ifp;
565
566	ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
567	QLA_LOCK(ha, __func__, -1, 0);
568
569	ha->qla_detach_active = 1;
570	qla_stop(ha);
571
572	qla_release(ha);
573
574	QLA_UNLOCK(ha, __func__);
575
576	if (ha->flags.lock_init) {
577		mtx_destroy(&ha->hw_lock);
578	}
579
580	QL_DPRINT2(ha, (dev, "%s: exit\n", __func__));
581
582        return (0);
583}
584
585/*
586 * SYSCTL Related Callbacks
587 */
588static int
589qla_sysctl_get_link_status(SYSCTL_HANDLER_ARGS)
590{
591	int err, ret = 0;
592	qla_host_t *ha;
593
594	err = sysctl_handle_int(oidp, &ret, 0, req);
595
596	if (err || !req->newptr)
597		return (err);
598
599	if (ret == 1) {
600		ha = (qla_host_t *)arg1;
601		ql_hw_link_status(ha);
602	}
603	return (err);
604}
605
606/*
607 * Name:	qla_release
608 * Function:	Releases the resources allocated for the device
609 */
610static void
611qla_release(qla_host_t *ha)
612{
613	device_t dev;
614	int i;
615
616	dev = ha->pci_dev;
617
618        if (ha->async_event_tq) {
619                taskqueue_drain(ha->async_event_tq, &ha->async_event_task);
620                taskqueue_free(ha->async_event_tq);
621        }
622
623	if (ha->err_tq) {
624		taskqueue_drain(ha->err_tq, &ha->err_task);
625		taskqueue_free(ha->err_tq);
626	}
627
628	if (ha->stats_tq) {
629		taskqueue_drain(ha->stats_tq, &ha->stats_task);
630		taskqueue_free(ha->stats_tq);
631	}
632
633	ql_del_cdev(ha);
634
635	if (ha->flags.qla_watchdog_active) {
636		ha->qla_watchdog_exit = 1;
637
638		while (ha->qla_watchdog_exited == 0)
639			qla_mdelay(__func__, 1);
640	}
641
642	if (ha->flags.qla_callout_init)
643		callout_stop(&ha->tx_callout);
644
645	if (ha->ifp != NULL)
646		ether_ifdetach(ha->ifp);
647
648	ql_free_dma(ha);
649	qla_free_parent_dma_tag(ha);
650
651	if (ha->mbx_handle)
652		(void)bus_teardown_intr(dev, ha->mbx_irq, ha->mbx_handle);
653
654	if (ha->mbx_irq)
655		(void) bus_release_resource(dev, SYS_RES_IRQ, ha->mbx_irq_rid,
656				ha->mbx_irq);
657
658	for (i = 0; i < ha->hw.num_sds_rings; i++) {
659
660		if (ha->irq_vec[i].handle) {
661			(void)bus_teardown_intr(dev, ha->irq_vec[i].irq,
662					ha->irq_vec[i].handle);
663		}
664
665		if (ha->irq_vec[i].irq) {
666			(void)bus_release_resource(dev, SYS_RES_IRQ,
667				ha->irq_vec[i].irq_rid,
668				ha->irq_vec[i].irq);
669		}
670
671		qla_free_tx_br(ha, &ha->tx_fp[i]);
672	}
673	qla_destroy_fp_taskqueues(ha);
674
675	if (ha->msix_count)
676		pci_release_msi(dev);
677
678//	if (ha->flags.lock_init) {
679//		mtx_destroy(&ha->hw_lock);
680//	}
681
682        if (ha->pci_reg)
683                (void) bus_release_resource(dev, SYS_RES_MEMORY, ha->reg_rid,
684				ha->pci_reg);
685
686        if (ha->pci_reg1)
687                (void) bus_release_resource(dev, SYS_RES_MEMORY, ha->reg_rid1,
688				ha->pci_reg1);
689
690	return;
691}
692
693/*
694 * DMA Related Functions
695 */
696
697static void
698qla_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
699{
700        *((bus_addr_t *)arg) = 0;
701
702        if (error) {
703                printf("%s: bus_dmamap_load failed (%d)\n", __func__, error);
704                return;
705	}
706
707        *((bus_addr_t *)arg) = segs[0].ds_addr;
708
709	return;
710}
711
712int
713ql_alloc_dmabuf(qla_host_t *ha, qla_dma_t *dma_buf)
714{
715        int             ret = 0;
716        device_t        dev;
717        bus_addr_t      b_addr;
718
719        dev = ha->pci_dev;
720
721        QL_DPRINT2(ha, (dev, "%s: enter\n", __func__));
722
723        ret = bus_dma_tag_create(
724                        ha->parent_tag,/* parent */
725                        dma_buf->alignment,
726                        ((bus_size_t)(1ULL << 32)),/* boundary */
727                        BUS_SPACE_MAXADDR,      /* lowaddr */
728                        BUS_SPACE_MAXADDR,      /* highaddr */
729                        NULL, NULL,             /* filter, filterarg */
730                        dma_buf->size,          /* maxsize */
731                        1,                      /* nsegments */
732                        dma_buf->size,          /* maxsegsize */
733                        0,                      /* flags */
734                        NULL, NULL,             /* lockfunc, lockarg */
735                        &dma_buf->dma_tag);
736
737        if (ret) {
738                device_printf(dev, "%s: could not create dma tag\n", __func__);
739                goto ql_alloc_dmabuf_exit;
740        }
741        ret = bus_dmamem_alloc(dma_buf->dma_tag,
742                        (void **)&dma_buf->dma_b,
743                        (BUS_DMA_ZERO | BUS_DMA_COHERENT | BUS_DMA_NOWAIT),
744                        &dma_buf->dma_map);
745        if (ret) {
746                bus_dma_tag_destroy(dma_buf->dma_tag);
747                device_printf(dev, "%s: bus_dmamem_alloc failed\n", __func__);
748                goto ql_alloc_dmabuf_exit;
749        }
750
751        ret = bus_dmamap_load(dma_buf->dma_tag,
752                        dma_buf->dma_map,
753                        dma_buf->dma_b,
754                        dma_buf->size,
755                        qla_dmamap_callback,
756                        &b_addr, BUS_DMA_NOWAIT);
757
758        if (ret || !b_addr) {
759                bus_dma_tag_destroy(dma_buf->dma_tag);
760                bus_dmamem_free(dma_buf->dma_tag, dma_buf->dma_b,
761                        dma_buf->dma_map);
762                ret = -1;
763                goto ql_alloc_dmabuf_exit;
764        }
765
766        dma_buf->dma_addr = b_addr;
767
768ql_alloc_dmabuf_exit:
769        QL_DPRINT2(ha, (dev, "%s: exit ret 0x%08x tag %p map %p b %p sz 0x%x\n",
770                __func__, ret, (void *)dma_buf->dma_tag,
771                (void *)dma_buf->dma_map, (void *)dma_buf->dma_b,
772		dma_buf->size));
773
774        return ret;
775}
776
777void
778ql_free_dmabuf(qla_host_t *ha, qla_dma_t *dma_buf)
779{
780	bus_dmamap_unload(dma_buf->dma_tag, dma_buf->dma_map);
781        bus_dmamem_free(dma_buf->dma_tag, dma_buf->dma_b, dma_buf->dma_map);
782        bus_dma_tag_destroy(dma_buf->dma_tag);
783}
784
785static int
786qla_alloc_parent_dma_tag(qla_host_t *ha)
787{
788	int		ret;
789	device_t	dev;
790
791	dev = ha->pci_dev;
792
793        /*
794         * Allocate parent DMA Tag
795         */
796        ret = bus_dma_tag_create(
797                        bus_get_dma_tag(dev),   /* parent */
798                        1,((bus_size_t)(1ULL << 32)),/* alignment, boundary */
799                        BUS_SPACE_MAXADDR,      /* lowaddr */
800                        BUS_SPACE_MAXADDR,      /* highaddr */
801                        NULL, NULL,             /* filter, filterarg */
802                        BUS_SPACE_MAXSIZE_32BIT,/* maxsize */
803                        0,                      /* nsegments */
804                        BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */
805                        0,                      /* flags */
806                        NULL, NULL,             /* lockfunc, lockarg */
807                        &ha->parent_tag);
808
809        if (ret) {
810                device_printf(dev, "%s: could not create parent dma tag\n",
811                        __func__);
812		return (-1);
813        }
814
815        ha->flags.parent_tag = 1;
816
817	return (0);
818}
819
820static void
821qla_free_parent_dma_tag(qla_host_t *ha)
822{
823        if (ha->flags.parent_tag) {
824                bus_dma_tag_destroy(ha->parent_tag);
825                ha->flags.parent_tag = 0;
826        }
827}
828
829/*
830 * Name: qla_init_ifnet
831 * Function: Creates the Network Device Interface and Registers it with the O.S
832 */
833
834static void
835qla_init_ifnet(device_t dev, qla_host_t *ha)
836{
837	struct ifnet *ifp;
838
839	QL_DPRINT2(ha, (dev, "%s: enter\n", __func__));
840
841	ifp = ha->ifp = if_alloc(IFT_ETHER);
842
843	if (ifp == NULL)
844		panic("%s: cannot if_alloc()\n", device_get_nameunit(dev));
845
846	if_initname(ifp, device_get_name(dev), device_get_unit(dev));
847
848	ifp->if_baudrate = IF_Gbps(10);
849	ifp->if_capabilities = IFCAP_LINKSTATE;
850	ifp->if_mtu = ETHERMTU;
851
852	ifp->if_init = qla_init;
853	ifp->if_softc = ha;
854	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
855	ifp->if_ioctl = qla_ioctl;
856
857	ifp->if_transmit = qla_transmit;
858	ifp->if_qflush = qla_qflush;
859
860	IFQ_SET_MAXLEN(&ifp->if_snd, qla_get_ifq_snd_maxlen(ha));
861	ifp->if_snd.ifq_drv_maxlen = qla_get_ifq_snd_maxlen(ha);
862	IFQ_SET_READY(&ifp->if_snd);
863
864	ha->max_frame_size = ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
865
866	ether_ifattach(ifp, qla_get_mac_addr(ha));
867
868	ifp->if_capabilities |= IFCAP_HWCSUM |
869				IFCAP_TSO4 |
870				IFCAP_JUMBO_MTU |
871				IFCAP_VLAN_HWTAGGING |
872				IFCAP_VLAN_MTU |
873				IFCAP_VLAN_HWTSO |
874				IFCAP_LRO;
875
876	ifp->if_capenable = ifp->if_capabilities;
877
878	ifp->if_hdrlen = sizeof(struct ether_vlan_header);
879
880	ifmedia_init(&ha->media, IFM_IMASK, qla_media_change, qla_media_status);
881
882	ifmedia_add(&ha->media, (IFM_ETHER | qla_get_optics(ha) | IFM_FDX), 0,
883		NULL);
884	ifmedia_add(&ha->media, (IFM_ETHER | IFM_AUTO), 0, NULL);
885
886	ifmedia_set(&ha->media, (IFM_ETHER | IFM_AUTO));
887
888	QL_DPRINT2(ha, (dev, "%s: exit\n", __func__));
889
890	return;
891}
892
893static void
894qla_init_locked(qla_host_t *ha)
895{
896	struct ifnet *ifp = ha->ifp;
897
898	qla_stop(ha);
899
900	if (qla_alloc_xmt_bufs(ha) != 0)
901		return;
902
903	qla_confirm_9kb_enable(ha);
904
905	if (qla_alloc_rcv_bufs(ha) != 0)
906		return;
907
908	bcopy(IF_LLADDR(ha->ifp), ha->hw.mac_addr, ETHER_ADDR_LEN);
909
910	ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_TSO;
911	ifp->if_hwassist |= CSUM_TCP_IPV6 | CSUM_UDP_IPV6;
912
913	ha->stop_rcv = 0;
914 	if (ql_init_hw_if(ha) == 0) {
915		ifp = ha->ifp;
916		ifp->if_drv_flags |= IFF_DRV_RUNNING;
917		ha->qla_watchdog_pause = 0;
918		ha->hw_vlan_tx_frames = 0;
919		ha->tx_tso_frames = 0;
920		ha->qla_interface_up = 1;
921		ql_update_link_state(ha);
922	}
923
924	return;
925}
926
927static void
928qla_init(void *arg)
929{
930	qla_host_t *ha;
931
932	ha = (qla_host_t *)arg;
933
934	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
935
936	if (QLA_LOCK(ha, __func__, -1, 0) != 0)
937		return;
938
939	qla_init_locked(ha);
940
941	QLA_UNLOCK(ha, __func__);
942
943	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit\n", __func__));
944}
945
946static int
947qla_set_multi(qla_host_t *ha, uint32_t add_multi)
948{
949	uint8_t mta[Q8_MAX_NUM_MULTICAST_ADDRS * Q8_MAC_ADDR_LEN];
950	struct ifmultiaddr *ifma;
951	int mcnt = 0;
952	struct ifnet *ifp = ha->ifp;
953	int ret = 0;
954
955	if_maddr_rlock(ifp);
956
957	TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
958
959		if (ifma->ifma_addr->sa_family != AF_LINK)
960			continue;
961
962		if (mcnt == Q8_MAX_NUM_MULTICAST_ADDRS)
963			break;
964
965		bcopy(LLADDR((struct sockaddr_dl *) ifma->ifma_addr),
966			&mta[mcnt * Q8_MAC_ADDR_LEN], Q8_MAC_ADDR_LEN);
967
968		mcnt++;
969	}
970
971	if_maddr_runlock(ifp);
972
973	if (QLA_LOCK(ha, __func__, QLA_LOCK_DEFAULT_MS_TIMEOUT,
974		QLA_LOCK_NO_SLEEP) != 0)
975		return (-1);
976
977	if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
978
979		if (!add_multi) {
980			ret = qla_hw_del_all_mcast(ha);
981
982			if (ret)
983				device_printf(ha->pci_dev,
984					"%s: qla_hw_del_all_mcast() failed\n",
985				__func__);
986		}
987
988		if (!ret)
989			ret = ql_hw_set_multi(ha, mta, mcnt, 1);
990
991	}
992
993	QLA_UNLOCK(ha, __func__);
994
995	return (ret);
996}
997
998static int
999qla_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
1000{
1001	int ret = 0;
1002	struct ifreq *ifr = (struct ifreq *)data;
1003	struct ifaddr *ifa = (struct ifaddr *)data;
1004	qla_host_t *ha;
1005
1006	ha = (qla_host_t *)ifp->if_softc;
1007
1008	switch (cmd) {
1009	case SIOCSIFADDR:
1010		QL_DPRINT4(ha, (ha->pci_dev, "%s: SIOCSIFADDR (0x%lx)\n",
1011			__func__, cmd));
1012
1013		if (ifa->ifa_addr->sa_family == AF_INET) {
1014
1015			ret = QLA_LOCK(ha, __func__,
1016					QLA_LOCK_DEFAULT_MS_TIMEOUT,
1017					QLA_LOCK_NO_SLEEP);
1018			if (ret)
1019				break;
1020
1021			ifp->if_flags |= IFF_UP;
1022
1023			if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1024				qla_init_locked(ha);
1025			}
1026
1027			QLA_UNLOCK(ha, __func__);
1028			QL_DPRINT4(ha, (ha->pci_dev,
1029				"%s: SIOCSIFADDR (0x%lx) ipv4 [0x%08x]\n",
1030				__func__, cmd,
1031				ntohl(IA_SIN(ifa)->sin_addr.s_addr)));
1032
1033			arp_ifinit(ifp, ifa);
1034		} else {
1035			ether_ioctl(ifp, cmd, data);
1036		}
1037		break;
1038
1039	case SIOCSIFMTU:
1040		QL_DPRINT4(ha, (ha->pci_dev, "%s: SIOCSIFMTU (0x%lx)\n",
1041			__func__, cmd));
1042
1043		if (ifr->ifr_mtu > QLA_MAX_MTU) {
1044			ret = EINVAL;
1045		} else {
1046			ret = QLA_LOCK(ha, __func__, QLA_LOCK_DEFAULT_MS_TIMEOUT,
1047					QLA_LOCK_NO_SLEEP);
1048
1049			if (ret)
1050				break;
1051
1052			ifp->if_mtu = ifr->ifr_mtu;
1053			ha->max_frame_size =
1054				ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
1055
1056			if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1057				qla_init_locked(ha);
1058			}
1059
1060			if (ifp->if_mtu > ETHERMTU)
1061				ha->std_replenish = QL_JUMBO_REPLENISH_THRES;
1062			else
1063				ha->std_replenish = QL_STD_REPLENISH_THRES;
1064
1065
1066			QLA_UNLOCK(ha, __func__);
1067		}
1068
1069		break;
1070
1071	case SIOCSIFFLAGS:
1072		QL_DPRINT4(ha, (ha->pci_dev, "%s: SIOCSIFFLAGS (0x%lx)\n",
1073			__func__, cmd));
1074
1075		ret = QLA_LOCK(ha, __func__, QLA_LOCK_DEFAULT_MS_TIMEOUT,
1076				QLA_LOCK_NO_SLEEP);
1077
1078		if (ret)
1079			break;
1080
1081		if (ifp->if_flags & IFF_UP) {
1082
1083			ha->max_frame_size = ifp->if_mtu +
1084					ETHER_HDR_LEN + ETHER_CRC_LEN;
1085			qla_init_locked(ha);
1086
1087			if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1088				if ((ifp->if_flags ^ ha->if_flags) &
1089					IFF_PROMISC) {
1090					ret = ql_set_promisc(ha);
1091				} else if ((ifp->if_flags ^ ha->if_flags) &
1092					IFF_ALLMULTI) {
1093					ret = ql_set_allmulti(ha);
1094				}
1095			}
1096		} else {
1097			if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1098				qla_stop(ha);
1099			ha->if_flags = ifp->if_flags;
1100		}
1101
1102		QLA_UNLOCK(ha, __func__);
1103		break;
1104
1105	case SIOCADDMULTI:
1106		QL_DPRINT4(ha, (ha->pci_dev,
1107			"%s: %s (0x%lx)\n", __func__, "SIOCADDMULTI", cmd));
1108
1109		if (qla_set_multi(ha, 1))
1110			ret = EINVAL;
1111		break;
1112
1113	case SIOCDELMULTI:
1114		QL_DPRINT4(ha, (ha->pci_dev,
1115			"%s: %s (0x%lx)\n", __func__, "SIOCDELMULTI", cmd));
1116
1117		if (qla_set_multi(ha, 0))
1118			ret = EINVAL;
1119		break;
1120
1121	case SIOCSIFMEDIA:
1122	case SIOCGIFMEDIA:
1123		QL_DPRINT4(ha, (ha->pci_dev,
1124			"%s: SIOCSIFMEDIA/SIOCGIFMEDIA (0x%lx)\n",
1125			__func__, cmd));
1126		ret = ifmedia_ioctl(ifp, ifr, &ha->media, cmd);
1127		break;
1128
1129	case SIOCSIFCAP:
1130	{
1131		int mask = ifr->ifr_reqcap ^ ifp->if_capenable;
1132
1133		QL_DPRINT4(ha, (ha->pci_dev, "%s: SIOCSIFCAP (0x%lx)\n",
1134			__func__, cmd));
1135
1136		if (mask & IFCAP_HWCSUM)
1137			ifp->if_capenable ^= IFCAP_HWCSUM;
1138		if (mask & IFCAP_TSO4)
1139			ifp->if_capenable ^= IFCAP_TSO4;
1140		if (mask & IFCAP_TSO6)
1141			ifp->if_capenable ^= IFCAP_TSO6;
1142		if (mask & IFCAP_VLAN_HWTAGGING)
1143			ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
1144		if (mask & IFCAP_VLAN_HWTSO)
1145			ifp->if_capenable ^= IFCAP_VLAN_HWTSO;
1146		if (mask & IFCAP_LRO)
1147			ifp->if_capenable ^= IFCAP_LRO;
1148
1149		if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1150			ret = QLA_LOCK(ha, __func__, QLA_LOCK_DEFAULT_MS_TIMEOUT,
1151				QLA_LOCK_NO_SLEEP);
1152
1153			if (ret)
1154				break;
1155
1156			qla_init_locked(ha);
1157
1158			QLA_UNLOCK(ha, __func__);
1159
1160		}
1161		VLAN_CAPABILITIES(ifp);
1162		break;
1163	}
1164
1165	default:
1166		QL_DPRINT4(ha, (ha->pci_dev, "%s: default (0x%lx)\n",
1167			__func__, cmd));
1168		ret = ether_ioctl(ifp, cmd, data);
1169		break;
1170	}
1171
1172	return (ret);
1173}
1174
1175static int
1176qla_media_change(struct ifnet *ifp)
1177{
1178	qla_host_t *ha;
1179	struct ifmedia *ifm;
1180	int ret = 0;
1181
1182	ha = (qla_host_t *)ifp->if_softc;
1183
1184	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
1185
1186	ifm = &ha->media;
1187
1188	if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1189		ret = EINVAL;
1190
1191	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit\n", __func__));
1192
1193	return (ret);
1194}
1195
1196static void
1197qla_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
1198{
1199	qla_host_t *ha;
1200
1201	ha = (qla_host_t *)ifp->if_softc;
1202
1203	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
1204
1205	ifmr->ifm_status = IFM_AVALID;
1206	ifmr->ifm_active = IFM_ETHER;
1207
1208	ql_update_link_state(ha);
1209	if (ha->hw.link_up) {
1210		ifmr->ifm_status |= IFM_ACTIVE;
1211		ifmr->ifm_active |= (IFM_FDX | qla_get_optics(ha));
1212	}
1213
1214	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit (%s)\n", __func__,\
1215		(ha->hw.link_up ? "link_up" : "link_down")));
1216
1217	return;
1218}
1219
1220
1221static int
1222qla_send(qla_host_t *ha, struct mbuf **m_headp, uint32_t txr_idx,
1223	uint32_t iscsi_pdu)
1224{
1225	bus_dma_segment_t	segs[QLA_MAX_SEGMENTS];
1226	bus_dmamap_t		map;
1227	int			nsegs;
1228	int			ret = -1;
1229	uint32_t		tx_idx;
1230	struct mbuf		*m_head = *m_headp;
1231
1232	QL_DPRINT8(ha, (ha->pci_dev, "%s: enter\n", __func__));
1233
1234	tx_idx = ha->hw.tx_cntxt[txr_idx].txr_next;
1235
1236	if (NULL != ha->tx_ring[txr_idx].tx_buf[tx_idx].m_head) {
1237		QL_ASSERT(ha, 0, ("%s [%d]: txr_idx = %d tx_idx = %d "\
1238			"mbuf = %p\n", __func__, __LINE__, txr_idx, tx_idx,\
1239			ha->tx_ring[txr_idx].tx_buf[tx_idx].m_head));
1240		if (m_head)
1241			m_freem(m_head);
1242		*m_headp = NULL;
1243		return (ret);
1244	}
1245
1246	map = ha->tx_ring[txr_idx].tx_buf[tx_idx].map;
1247
1248	ret = bus_dmamap_load_mbuf_sg(ha->tx_tag, map, m_head, segs, &nsegs,
1249			BUS_DMA_NOWAIT);
1250
1251	if (ret == EFBIG) {
1252
1253		struct mbuf *m;
1254
1255		QL_DPRINT8(ha, (ha->pci_dev, "%s: EFBIG [%d]\n", __func__,
1256			m_head->m_pkthdr.len));
1257
1258		m = m_defrag(m_head, M_NOWAIT);
1259		if (m == NULL) {
1260			ha->err_tx_defrag++;
1261			m_freem(m_head);
1262			*m_headp = NULL;
1263			device_printf(ha->pci_dev,
1264				"%s: m_defrag() = NULL [%d]\n",
1265				__func__, ret);
1266			return (ENOBUFS);
1267		}
1268		m_head = m;
1269		*m_headp = m_head;
1270
1271		if ((ret = bus_dmamap_load_mbuf_sg(ha->tx_tag, map, m_head,
1272					segs, &nsegs, BUS_DMA_NOWAIT))) {
1273
1274			ha->err_tx_dmamap_load++;
1275
1276			device_printf(ha->pci_dev,
1277				"%s: bus_dmamap_load_mbuf_sg failed0[%d, %d]\n",
1278				__func__, ret, m_head->m_pkthdr.len);
1279
1280			if (ret != ENOMEM) {
1281				m_freem(m_head);
1282				*m_headp = NULL;
1283			}
1284			return (ret);
1285		}
1286
1287	} else if (ret) {
1288
1289		ha->err_tx_dmamap_load++;
1290
1291		device_printf(ha->pci_dev,
1292			"%s: bus_dmamap_load_mbuf_sg failed1[%d, %d]\n",
1293			__func__, ret, m_head->m_pkthdr.len);
1294
1295		if (ret != ENOMEM) {
1296			m_freem(m_head);
1297			*m_headp = NULL;
1298		}
1299		return (ret);
1300	}
1301
1302	QL_ASSERT(ha, (nsegs != 0), ("qla_send: empty packet"));
1303
1304	bus_dmamap_sync(ha->tx_tag, map, BUS_DMASYNC_PREWRITE);
1305
1306        if (!(ret = ql_hw_send(ha, segs, nsegs, tx_idx, m_head, txr_idx,
1307				iscsi_pdu))) {
1308		ha->tx_ring[txr_idx].count++;
1309		if (iscsi_pdu)
1310			ha->tx_ring[txr_idx].iscsi_pkt_count++;
1311		ha->tx_ring[txr_idx].tx_buf[tx_idx].m_head = m_head;
1312	} else {
1313		bus_dmamap_unload(ha->tx_tag, map);
1314		if (ret == EINVAL) {
1315			if (m_head)
1316				m_freem(m_head);
1317			*m_headp = NULL;
1318		}
1319	}
1320
1321	QL_DPRINT8(ha, (ha->pci_dev, "%s: exit\n", __func__));
1322	return (ret);
1323}
1324
1325static int
1326qla_alloc_tx_br(qla_host_t *ha, qla_tx_fp_t *fp)
1327{
1328        snprintf(fp->tx_mtx_name, sizeof(fp->tx_mtx_name),
1329                "qla%d_fp%d_tx_mq_lock", ha->pci_func, fp->txr_idx);
1330
1331        mtx_init(&fp->tx_mtx, fp->tx_mtx_name, NULL, MTX_DEF);
1332
1333        fp->tx_br = buf_ring_alloc(NUM_TX_DESCRIPTORS, M_DEVBUF,
1334                                   M_NOWAIT, &fp->tx_mtx);
1335        if (fp->tx_br == NULL) {
1336            QL_DPRINT1(ha, (ha->pci_dev, "buf_ring_alloc failed for "
1337                " fp[%d, %d]\n", ha->pci_func, fp->txr_idx));
1338            return (-ENOMEM);
1339        }
1340        return 0;
1341}
1342
1343static void
1344qla_free_tx_br(qla_host_t *ha, qla_tx_fp_t *fp)
1345{
1346        struct mbuf *mp;
1347        struct ifnet *ifp = ha->ifp;
1348
1349        if (mtx_initialized(&fp->tx_mtx)) {
1350
1351                if (fp->tx_br != NULL) {
1352
1353                        mtx_lock(&fp->tx_mtx);
1354
1355                        while ((mp = drbr_dequeue(ifp, fp->tx_br)) != NULL) {
1356                                m_freem(mp);
1357                        }
1358
1359                        mtx_unlock(&fp->tx_mtx);
1360
1361                        buf_ring_free(fp->tx_br, M_DEVBUF);
1362                        fp->tx_br = NULL;
1363                }
1364                mtx_destroy(&fp->tx_mtx);
1365        }
1366        return;
1367}
1368
1369static void
1370qla_fp_taskqueue(void *context, int pending)
1371{
1372        qla_tx_fp_t *fp;
1373        qla_host_t *ha;
1374        struct ifnet *ifp;
1375        struct mbuf  *mp;
1376        int ret;
1377	uint32_t txr_idx;
1378	uint32_t iscsi_pdu = 0;
1379	uint32_t rx_pkts_left = -1;
1380
1381        fp = context;
1382
1383        if (fp == NULL)
1384                return;
1385
1386        ha = (qla_host_t *)fp->ha;
1387
1388        ifp = ha->ifp;
1389
1390	txr_idx = fp->txr_idx;
1391
1392        mtx_lock(&fp->tx_mtx);
1393
1394        if (!(ifp->if_drv_flags & IFF_DRV_RUNNING) || (!ha->hw.link_up)) {
1395                mtx_unlock(&fp->tx_mtx);
1396                goto qla_fp_taskqueue_exit;
1397        }
1398
1399	while (rx_pkts_left && !ha->stop_rcv &&
1400		(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1401		rx_pkts_left = ql_rcv_isr(ha, fp->txr_idx, 64);
1402
1403#ifdef QL_ENABLE_ISCSI_TLV
1404		ql_hw_tx_done_locked(ha, fp->txr_idx);
1405		ql_hw_tx_done_locked(ha, (fp->txr_idx + (ha->hw.num_tx_rings >> 1)));
1406#else
1407		ql_hw_tx_done_locked(ha, fp->txr_idx);
1408#endif /* #ifdef QL_ENABLE_ISCSI_TLV */
1409
1410		mp = drbr_peek(ifp, fp->tx_br);
1411
1412        	while (mp != NULL) {
1413
1414			if (M_HASHTYPE_GET(mp) != M_HASHTYPE_NONE) {
1415#ifdef QL_ENABLE_ISCSI_TLV
1416				if (ql_iscsi_pdu(ha, mp) == 0) {
1417					txr_idx = txr_idx +
1418						(ha->hw.num_tx_rings >> 1);
1419					iscsi_pdu = 1;
1420				} else {
1421					iscsi_pdu = 0;
1422					txr_idx = fp->txr_idx;
1423				}
1424#endif /* #ifdef QL_ENABLE_ISCSI_TLV */
1425			}
1426
1427			ret = qla_send(ha, &mp, txr_idx, iscsi_pdu);
1428
1429			if (ret) {
1430				if (mp != NULL)
1431					drbr_putback(ifp, fp->tx_br, mp);
1432				else {
1433					drbr_advance(ifp, fp->tx_br);
1434				}
1435
1436				mtx_unlock(&fp->tx_mtx);
1437
1438				goto qla_fp_taskqueue_exit0;
1439			} else {
1440				drbr_advance(ifp, fp->tx_br);
1441			}
1442
1443			/* Send a copy of the frame to the BPF listener */
1444			ETHER_BPF_MTAP(ifp, mp);
1445			if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1446				break;
1447
1448			mp = drbr_peek(ifp, fp->tx_br);
1449		}
1450	}
1451        mtx_unlock(&fp->tx_mtx);
1452
1453qla_fp_taskqueue_exit0:
1454
1455	if (rx_pkts_left || ((mp != NULL) && ret)) {
1456		taskqueue_enqueue(fp->fp_taskqueue, &fp->fp_task);
1457	} else {
1458		if (!ha->stop_rcv) {
1459			QL_ENABLE_INTERRUPTS(ha, fp->txr_idx);
1460		}
1461	}
1462
1463qla_fp_taskqueue_exit:
1464
1465        QL_DPRINT2(ha, (ha->pci_dev, "%s: exit ret = %d\n", __func__, ret));
1466        return;
1467}
1468
1469static int
1470qla_create_fp_taskqueues(qla_host_t *ha)
1471{
1472        int     i;
1473        uint8_t tq_name[32];
1474
1475        for (i = 0; i < ha->hw.num_sds_rings; i++) {
1476
1477                qla_tx_fp_t *fp = &ha->tx_fp[i];
1478
1479                bzero(tq_name, sizeof (tq_name));
1480                snprintf(tq_name, sizeof (tq_name), "ql_fp_tq_%d", i);
1481
1482                TASK_INIT(&fp->fp_task, 0, qla_fp_taskqueue, fp);
1483
1484                fp->fp_taskqueue = taskqueue_create_fast(tq_name, M_NOWAIT,
1485                                        taskqueue_thread_enqueue,
1486                                        &fp->fp_taskqueue);
1487
1488                if (fp->fp_taskqueue == NULL)
1489                        return (-1);
1490
1491                taskqueue_start_threads(&fp->fp_taskqueue, 1, PI_NET, "%s",
1492                        tq_name);
1493
1494                QL_DPRINT1(ha, (ha->pci_dev, "%s: %p\n", __func__,
1495                        fp->fp_taskqueue));
1496        }
1497
1498        return (0);
1499}
1500
1501static void
1502qla_destroy_fp_taskqueues(qla_host_t *ha)
1503{
1504        int     i;
1505
1506        for (i = 0; i < ha->hw.num_sds_rings; i++) {
1507
1508                qla_tx_fp_t *fp = &ha->tx_fp[i];
1509
1510                if (fp->fp_taskqueue != NULL) {
1511                        taskqueue_drain(fp->fp_taskqueue, &fp->fp_task);
1512                        taskqueue_free(fp->fp_taskqueue);
1513                        fp->fp_taskqueue = NULL;
1514                }
1515        }
1516        return;
1517}
1518
1519static void
1520qla_drain_fp_taskqueues(qla_host_t *ha)
1521{
1522        int     i;
1523
1524        for (i = 0; i < ha->hw.num_sds_rings; i++) {
1525                qla_tx_fp_t *fp = &ha->tx_fp[i];
1526
1527                if (fp->fp_taskqueue != NULL) {
1528                        taskqueue_drain(fp->fp_taskqueue, &fp->fp_task);
1529                }
1530        }
1531        return;
1532}
1533
1534static int
1535qla_transmit(struct ifnet *ifp, struct mbuf  *mp)
1536{
1537	qla_host_t *ha = (qla_host_t *)ifp->if_softc;
1538        qla_tx_fp_t *fp;
1539        int rss_id = 0;
1540        int ret = 0;
1541
1542        QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
1543
1544#if __FreeBSD_version >= 1100000
1545        if (M_HASHTYPE_GET(mp) != M_HASHTYPE_NONE)
1546#else
1547        if (mp->m_flags & M_FLOWID)
1548#endif
1549                rss_id = (mp->m_pkthdr.flowid & Q8_RSS_IND_TBL_MAX_IDX) %
1550                                        ha->hw.num_sds_rings;
1551        fp = &ha->tx_fp[rss_id];
1552
1553        if (fp->tx_br == NULL) {
1554                ret = EINVAL;
1555                goto qla_transmit_exit;
1556        }
1557
1558        if (mp != NULL) {
1559                ret = drbr_enqueue(ifp, fp->tx_br, mp);
1560        }
1561
1562        if (fp->fp_taskqueue != NULL)
1563                taskqueue_enqueue(fp->fp_taskqueue, &fp->fp_task);
1564
1565        ret = 0;
1566
1567qla_transmit_exit:
1568
1569        QL_DPRINT2(ha, (ha->pci_dev, "%s: exit ret = %d\n", __func__, ret));
1570        return ret;
1571}
1572
1573static void
1574qla_qflush(struct ifnet *ifp)
1575{
1576        int                     i;
1577        qla_tx_fp_t		*fp;
1578        struct mbuf             *mp;
1579        qla_host_t              *ha;
1580
1581        ha = (qla_host_t *)ifp->if_softc;
1582
1583        QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
1584
1585        for (i = 0; i < ha->hw.num_sds_rings; i++) {
1586
1587                fp = &ha->tx_fp[i];
1588
1589                if (fp == NULL)
1590                        continue;
1591
1592                if (fp->tx_br) {
1593                        mtx_lock(&fp->tx_mtx);
1594
1595                        while ((mp = drbr_dequeue(ifp, fp->tx_br)) != NULL) {
1596                                m_freem(mp);
1597                        }
1598                        mtx_unlock(&fp->tx_mtx);
1599                }
1600        }
1601        QL_DPRINT2(ha, (ha->pci_dev, "%s: exit\n", __func__));
1602
1603        return;
1604}
1605
1606static void
1607qla_stop(qla_host_t *ha)
1608{
1609	struct ifnet *ifp = ha->ifp;
1610	device_t	dev;
1611	int i = 0;
1612
1613	dev = ha->pci_dev;
1614
1615	ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1616	ha->qla_watchdog_pause = 1;
1617
1618        for (i = 0; i < ha->hw.num_sds_rings; i++) {
1619        	qla_tx_fp_t *fp;
1620
1621		fp = &ha->tx_fp[i];
1622
1623                if (fp == NULL)
1624                        continue;
1625
1626		if (fp->tx_br != NULL) {
1627                        mtx_lock(&fp->tx_mtx);
1628                        mtx_unlock(&fp->tx_mtx);
1629		}
1630	}
1631
1632	while (!ha->qla_watchdog_paused)
1633		qla_mdelay(__func__, 1);
1634
1635	ha->qla_interface_up = 0;
1636
1637	qla_drain_fp_taskqueues(ha);
1638
1639	ql_del_hw_if(ha);
1640
1641	qla_free_xmt_bufs(ha);
1642	qla_free_rcv_bufs(ha);
1643
1644	return;
1645}
1646
1647/*
1648 * Buffer Management Functions for Transmit and Receive Rings
1649 */
1650static int
1651qla_alloc_xmt_bufs(qla_host_t *ha)
1652{
1653	int ret = 0;
1654	uint32_t i, j;
1655	qla_tx_buf_t *txb;
1656
1657	if (bus_dma_tag_create(NULL,    /* parent */
1658		1, 0,    /* alignment, bounds */
1659		BUS_SPACE_MAXADDR,       /* lowaddr */
1660		BUS_SPACE_MAXADDR,       /* highaddr */
1661		NULL, NULL,      /* filter, filterarg */
1662		QLA_MAX_TSO_FRAME_SIZE,     /* maxsize */
1663		QLA_MAX_SEGMENTS,        /* nsegments */
1664		PAGE_SIZE,        /* maxsegsize */
1665		BUS_DMA_ALLOCNOW,        /* flags */
1666		NULL,    /* lockfunc */
1667		NULL,    /* lockfuncarg */
1668		&ha->tx_tag)) {
1669		device_printf(ha->pci_dev, "%s: tx_tag alloc failed\n",
1670			__func__);
1671		return (ENOMEM);
1672	}
1673
1674	for (i = 0; i < ha->hw.num_tx_rings; i++) {
1675		bzero((void *)ha->tx_ring[i].tx_buf,
1676			(sizeof(qla_tx_buf_t) * NUM_TX_DESCRIPTORS));
1677	}
1678
1679	for (j = 0; j < ha->hw.num_tx_rings; j++) {
1680		for (i = 0; i < NUM_TX_DESCRIPTORS; i++) {
1681
1682			txb = &ha->tx_ring[j].tx_buf[i];
1683
1684			if ((ret = bus_dmamap_create(ha->tx_tag,
1685					BUS_DMA_NOWAIT, &txb->map))) {
1686
1687				ha->err_tx_dmamap_create++;
1688				device_printf(ha->pci_dev,
1689					"%s: bus_dmamap_create failed[%d]\n",
1690					__func__, ret);
1691
1692				qla_free_xmt_bufs(ha);
1693
1694				return (ret);
1695			}
1696		}
1697	}
1698
1699	return 0;
1700}
1701
1702/*
1703 * Release mbuf after it sent on the wire
1704 */
1705static void
1706qla_clear_tx_buf(qla_host_t *ha, qla_tx_buf_t *txb)
1707{
1708	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
1709
1710	if (txb->m_head) {
1711		bus_dmamap_sync(ha->tx_tag, txb->map,
1712			BUS_DMASYNC_POSTWRITE);
1713
1714		bus_dmamap_unload(ha->tx_tag, txb->map);
1715
1716		m_freem(txb->m_head);
1717		txb->m_head = NULL;
1718
1719		bus_dmamap_destroy(ha->tx_tag, txb->map);
1720		txb->map = NULL;
1721	}
1722
1723	if (txb->map) {
1724		bus_dmamap_unload(ha->tx_tag, txb->map);
1725		bus_dmamap_destroy(ha->tx_tag, txb->map);
1726		txb->map = NULL;
1727	}
1728
1729	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit\n", __func__));
1730}
1731
1732static void
1733qla_free_xmt_bufs(qla_host_t *ha)
1734{
1735	int		i, j;
1736
1737	for (j = 0; j < ha->hw.num_tx_rings; j++) {
1738		for (i = 0; i < NUM_TX_DESCRIPTORS; i++)
1739			qla_clear_tx_buf(ha, &ha->tx_ring[j].tx_buf[i]);
1740	}
1741
1742	if (ha->tx_tag != NULL) {
1743		bus_dma_tag_destroy(ha->tx_tag);
1744		ha->tx_tag = NULL;
1745	}
1746
1747	for (i = 0; i < ha->hw.num_tx_rings; i++) {
1748		bzero((void *)ha->tx_ring[i].tx_buf,
1749			(sizeof(qla_tx_buf_t) * NUM_TX_DESCRIPTORS));
1750	}
1751	return;
1752}
1753
1754
1755static int
1756qla_alloc_rcv_std(qla_host_t *ha)
1757{
1758	int		i, j, k, r, ret = 0;
1759	qla_rx_buf_t	*rxb;
1760	qla_rx_ring_t	*rx_ring;
1761
1762	for (r = 0; r < ha->hw.num_rds_rings; r++) {
1763
1764		rx_ring = &ha->rx_ring[r];
1765
1766		for (i = 0; i < NUM_RX_DESCRIPTORS; i++) {
1767
1768			rxb = &rx_ring->rx_buf[i];
1769
1770			ret = bus_dmamap_create(ha->rx_tag, BUS_DMA_NOWAIT,
1771					&rxb->map);
1772
1773			if (ret) {
1774				device_printf(ha->pci_dev,
1775					"%s: dmamap[%d, %d] failed\n",
1776					__func__, r, i);
1777
1778				for (k = 0; k < r; k++) {
1779					for (j = 0; j < NUM_RX_DESCRIPTORS;
1780						j++) {
1781						rxb = &ha->rx_ring[k].rx_buf[j];
1782						bus_dmamap_destroy(ha->rx_tag,
1783							rxb->map);
1784					}
1785				}
1786
1787				for (j = 0; j < i; j++) {
1788					bus_dmamap_destroy(ha->rx_tag,
1789						rx_ring->rx_buf[j].map);
1790				}
1791				goto qla_alloc_rcv_std_err;
1792			}
1793		}
1794	}
1795
1796	qla_init_hw_rcv_descriptors(ha);
1797
1798
1799	for (r = 0; r < ha->hw.num_rds_rings; r++) {
1800
1801		rx_ring = &ha->rx_ring[r];
1802
1803		for (i = 0; i < NUM_RX_DESCRIPTORS; i++) {
1804			rxb = &rx_ring->rx_buf[i];
1805			rxb->handle = i;
1806			if (!(ret = ql_get_mbuf(ha, rxb, NULL))) {
1807				/*
1808			 	 * set the physical address in the
1809				 * corresponding descriptor entry in the
1810				 * receive ring/queue for the hba
1811				 */
1812				qla_set_hw_rcv_desc(ha, r, i, rxb->handle,
1813					rxb->paddr,
1814					(rxb->m_head)->m_pkthdr.len);
1815			} else {
1816				device_printf(ha->pci_dev,
1817					"%s: ql_get_mbuf [%d, %d] failed\n",
1818					__func__, r, i);
1819				bus_dmamap_destroy(ha->rx_tag, rxb->map);
1820				goto qla_alloc_rcv_std_err;
1821			}
1822		}
1823	}
1824	return 0;
1825
1826qla_alloc_rcv_std_err:
1827	return (-1);
1828}
1829
1830static void
1831qla_free_rcv_std(qla_host_t *ha)
1832{
1833	int		i, r;
1834	qla_rx_buf_t	*rxb;
1835
1836	for (r = 0; r < ha->hw.num_rds_rings; r++) {
1837		for (i = 0; i < NUM_RX_DESCRIPTORS; i++) {
1838			rxb = &ha->rx_ring[r].rx_buf[i];
1839			if (rxb->m_head != NULL) {
1840				bus_dmamap_unload(ha->rx_tag, rxb->map);
1841				bus_dmamap_destroy(ha->rx_tag, rxb->map);
1842				m_freem(rxb->m_head);
1843				rxb->m_head = NULL;
1844			}
1845		}
1846	}
1847	return;
1848}
1849
1850static int
1851qla_alloc_rcv_bufs(qla_host_t *ha)
1852{
1853	int		i, ret = 0;
1854
1855	if (bus_dma_tag_create(NULL,    /* parent */
1856			1, 0,    /* alignment, bounds */
1857			BUS_SPACE_MAXADDR,       /* lowaddr */
1858			BUS_SPACE_MAXADDR,       /* highaddr */
1859			NULL, NULL,      /* filter, filterarg */
1860			MJUM9BYTES,     /* maxsize */
1861			1,        /* nsegments */
1862			MJUM9BYTES,        /* maxsegsize */
1863			BUS_DMA_ALLOCNOW,        /* flags */
1864			NULL,    /* lockfunc */
1865			NULL,    /* lockfuncarg */
1866			&ha->rx_tag)) {
1867
1868		device_printf(ha->pci_dev, "%s: rx_tag alloc failed\n",
1869			__func__);
1870
1871		return (ENOMEM);
1872	}
1873
1874	bzero((void *)ha->rx_ring, (sizeof(qla_rx_ring_t) * MAX_RDS_RINGS));
1875
1876	for (i = 0; i < ha->hw.num_sds_rings; i++) {
1877		ha->hw.sds[i].sdsr_next = 0;
1878		ha->hw.sds[i].rxb_free = NULL;
1879		ha->hw.sds[i].rx_free = 0;
1880	}
1881
1882	ret = qla_alloc_rcv_std(ha);
1883
1884	return (ret);
1885}
1886
1887static void
1888qla_free_rcv_bufs(qla_host_t *ha)
1889{
1890	int		i;
1891
1892	qla_free_rcv_std(ha);
1893
1894	if (ha->rx_tag != NULL) {
1895		bus_dma_tag_destroy(ha->rx_tag);
1896		ha->rx_tag = NULL;
1897	}
1898
1899	bzero((void *)ha->rx_ring, (sizeof(qla_rx_ring_t) * MAX_RDS_RINGS));
1900
1901	for (i = 0; i < ha->hw.num_sds_rings; i++) {
1902		ha->hw.sds[i].sdsr_next = 0;
1903		ha->hw.sds[i].rxb_free = NULL;
1904		ha->hw.sds[i].rx_free = 0;
1905	}
1906
1907	return;
1908}
1909
1910int
1911ql_get_mbuf(qla_host_t *ha, qla_rx_buf_t *rxb, struct mbuf *nmp)
1912{
1913	register struct mbuf *mp = nmp;
1914	struct ifnet   		*ifp;
1915	int            		ret = 0;
1916	uint32_t		offset;
1917	bus_dma_segment_t	segs[1];
1918	int			nsegs, mbuf_size;
1919
1920	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
1921
1922	ifp = ha->ifp;
1923
1924        if (ha->hw.enable_9kb)
1925                mbuf_size = MJUM9BYTES;
1926        else
1927                mbuf_size = MCLBYTES;
1928
1929	if (mp == NULL) {
1930
1931		if (QL_ERR_INJECT(ha, INJCT_M_GETCL_M_GETJCL_FAILURE))
1932			return(-1);
1933
1934                if (ha->hw.enable_9kb)
1935                        mp = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, mbuf_size);
1936                else
1937                        mp = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1938
1939		if (mp == NULL) {
1940			ha->err_m_getcl++;
1941			ret = ENOBUFS;
1942			device_printf(ha->pci_dev,
1943					"%s: m_getcl failed\n", __func__);
1944			goto exit_ql_get_mbuf;
1945		}
1946		mp->m_len = mp->m_pkthdr.len = mbuf_size;
1947	} else {
1948		mp->m_len = mp->m_pkthdr.len = mbuf_size;
1949		mp->m_data = mp->m_ext.ext_buf;
1950		mp->m_next = NULL;
1951	}
1952
1953	offset = (uint32_t)((unsigned long long)mp->m_data & 0x7ULL);
1954	if (offset) {
1955		offset = 8 - offset;
1956		m_adj(mp, offset);
1957	}
1958
1959	/*
1960	 * Using memory from the mbuf cluster pool, invoke the bus_dma
1961	 * machinery to arrange the memory mapping.
1962	 */
1963	ret = bus_dmamap_load_mbuf_sg(ha->rx_tag, rxb->map,
1964			mp, segs, &nsegs, BUS_DMA_NOWAIT);
1965	rxb->paddr = segs[0].ds_addr;
1966
1967	if (ret || !rxb->paddr || (nsegs != 1)) {
1968		m_free(mp);
1969		rxb->m_head = NULL;
1970		device_printf(ha->pci_dev,
1971			"%s: bus_dmamap_load failed[%d, 0x%016llx, %d]\n",
1972			__func__, ret, (long long unsigned int)rxb->paddr,
1973			nsegs);
1974                ret = -1;
1975		goto exit_ql_get_mbuf;
1976	}
1977	rxb->m_head = mp;
1978	bus_dmamap_sync(ha->rx_tag, rxb->map, BUS_DMASYNC_PREREAD);
1979
1980exit_ql_get_mbuf:
1981	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit ret = 0x%08x\n", __func__, ret));
1982	return (ret);
1983}
1984
1985
1986static void
1987qla_get_peer(qla_host_t *ha)
1988{
1989	device_t *peers;
1990	int count, i, slot;
1991	int my_slot = pci_get_slot(ha->pci_dev);
1992
1993	if (device_get_children(device_get_parent(ha->pci_dev), &peers, &count))
1994		return;
1995
1996	for (i = 0; i < count; i++) {
1997		slot = pci_get_slot(peers[i]);
1998
1999		if ((slot >= 0) && (slot == my_slot) &&
2000			(pci_get_device(peers[i]) ==
2001				pci_get_device(ha->pci_dev))) {
2002			if (ha->pci_dev != peers[i])
2003				ha->peer_dev = peers[i];
2004		}
2005	}
2006}
2007
2008static void
2009qla_send_msg_to_peer(qla_host_t *ha, uint32_t msg_to_peer)
2010{
2011	qla_host_t *ha_peer;
2012
2013	if (ha->peer_dev) {
2014        	if ((ha_peer = device_get_softc(ha->peer_dev)) != NULL) {
2015
2016			ha_peer->msg_from_peer = msg_to_peer;
2017		}
2018	}
2019}
2020
2021static void
2022qla_error_recovery(void *context, int pending)
2023{
2024	qla_host_t *ha = context;
2025	uint32_t msecs_100 = 100;
2026	struct ifnet *ifp = ha->ifp;
2027	int i = 0;
2028
2029device_printf(ha->pci_dev, "%s: \n", __func__);
2030	ha->hw.imd_compl = 1;
2031
2032	if (QLA_LOCK(ha, __func__, -1, 0) != 0)
2033		return;
2034
2035device_printf(ha->pci_dev, "%s: enter\n", __func__);
2036
2037	if (ha->qla_interface_up) {
2038
2039		qla_mdelay(__func__, 300);
2040
2041	        ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
2042
2043		for (i = 0; i < ha->hw.num_sds_rings; i++) {
2044	        	qla_tx_fp_t *fp;
2045
2046			fp = &ha->tx_fp[i];
2047
2048			if (fp == NULL)
2049				continue;
2050
2051			if (fp->tx_br != NULL) {
2052				mtx_lock(&fp->tx_mtx);
2053				mtx_unlock(&fp->tx_mtx);
2054			}
2055		}
2056	}
2057
2058
2059	qla_drain_fp_taskqueues(ha);
2060
2061	if ((ha->pci_func & 0x1) == 0) {
2062
2063		if (!ha->msg_from_peer) {
2064			qla_send_msg_to_peer(ha, QL_PEER_MSG_RESET);
2065
2066			while ((ha->msg_from_peer != QL_PEER_MSG_ACK) &&
2067				msecs_100--)
2068				qla_mdelay(__func__, 100);
2069		}
2070
2071		ha->msg_from_peer = 0;
2072
2073		if (ha->enable_minidump)
2074			ql_minidump(ha);
2075
2076		(void) ql_init_hw(ha);
2077
2078		if (ha->qla_interface_up) {
2079			qla_free_xmt_bufs(ha);
2080			qla_free_rcv_bufs(ha);
2081		}
2082
2083		qla_send_msg_to_peer(ha, QL_PEER_MSG_ACK);
2084
2085	} else {
2086		if (ha->msg_from_peer == QL_PEER_MSG_RESET) {
2087
2088			ha->msg_from_peer = 0;
2089
2090			qla_send_msg_to_peer(ha, QL_PEER_MSG_ACK);
2091		} else {
2092			qla_send_msg_to_peer(ha, QL_PEER_MSG_RESET);
2093		}
2094
2095		while ((ha->msg_from_peer != QL_PEER_MSG_ACK)  && msecs_100--)
2096			qla_mdelay(__func__, 100);
2097		ha->msg_from_peer = 0;
2098
2099		(void) ql_init_hw(ha);
2100
2101		qla_mdelay(__func__, 1000);
2102
2103		if (ha->qla_interface_up) {
2104			qla_free_xmt_bufs(ha);
2105			qla_free_rcv_bufs(ha);
2106		}
2107	}
2108
2109	if (ha->qla_interface_up) {
2110
2111		if (qla_alloc_xmt_bufs(ha) != 0) {
2112			goto qla_error_recovery_exit;
2113		}
2114		qla_confirm_9kb_enable(ha);
2115
2116		if (qla_alloc_rcv_bufs(ha) != 0) {
2117			goto qla_error_recovery_exit;
2118		}
2119
2120		ha->stop_rcv = 0;
2121
2122		if (ql_init_hw_if(ha) == 0) {
2123			ifp = ha->ifp;
2124			ifp->if_drv_flags |= IFF_DRV_RUNNING;
2125			ha->qla_watchdog_pause = 0;
2126		}
2127	} else
2128		ha->qla_watchdog_pause = 0;
2129
2130qla_error_recovery_exit:
2131
2132device_printf(ha->pci_dev, "%s: exit\n", __func__);
2133
2134        QLA_UNLOCK(ha, __func__);
2135
2136	callout_reset(&ha->tx_callout, QLA_WATCHDOG_CALLOUT_TICKS,
2137		qla_watchdog, ha);
2138	return;
2139}
2140
2141static void
2142qla_async_event(void *context, int pending)
2143{
2144        qla_host_t *ha = context;
2145
2146	if (QLA_LOCK(ha, __func__, -1, 0) != 0)
2147		return;
2148
2149	if (ha->async_event) {
2150		ha->async_event = 0;
2151        	qla_hw_async_event(ha);
2152	}
2153
2154	QLA_UNLOCK(ha, __func__);
2155
2156	return;
2157}
2158
2159static void
2160qla_stats(void *context, int pending)
2161{
2162        qla_host_t *ha;
2163
2164        ha = context;
2165
2166	ql_get_stats(ha);
2167	return;
2168}
2169
2170