ql_os.c revision 284982 
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 284982 2015-06-30 20:59:07Z 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_stats(SYSCTL_HANDLER_ARGS);
74static int qla_sysctl_get_link_status(SYSCTL_HANDLER_ARGS);
75static void qla_release(qla_host_t *ha);
76static void qla_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nsegs,
77		int error);
78static void qla_stop(qla_host_t *ha);
79static int qla_send(qla_host_t *ha, struct mbuf **m_headp);
80static void qla_tx_done(void *context, int pending);
81static void qla_get_peer(qla_host_t *ha);
82static void qla_error_recovery(void *context, int pending);
83static void qla_async_event(void *context, int pending);
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);
96static void qla_start(struct ifnet *ifp);
97
98static device_method_t qla_pci_methods[] = {
99	/* Device interface */
100	DEVMETHOD(device_probe, qla_pci_probe),
101	DEVMETHOD(device_attach, qla_pci_attach),
102	DEVMETHOD(device_detach, qla_pci_detach),
103	{ 0, 0 }
104};
105
106static driver_t qla_pci_driver = {
107	"ql", qla_pci_methods, sizeof (qla_host_t),
108};
109
110static devclass_t qla83xx_devclass;
111
112DRIVER_MODULE(qla83xx, pci, qla_pci_driver, qla83xx_devclass, 0, 0);
113
114MODULE_DEPEND(qla83xx, pci, 1, 1, 1);
115MODULE_DEPEND(qla83xx, ether, 1, 1, 1);
116
117MALLOC_DEFINE(M_QLA83XXBUF, "qla83xxbuf", "Buffers for qla83xx driver");
118
119#define QL_STD_REPLENISH_THRES		0
120#define QL_JUMBO_REPLENISH_THRES	32
121
122
123static char dev_str[64];
124static char ver_str[64];
125
126/*
127 * Name:	qla_pci_probe
128 * Function:	Validate the PCI device to be a QLA80XX device
129 */
130static int
131qla_pci_probe(device_t dev)
132{
133        switch ((pci_get_device(dev) << 16) | (pci_get_vendor(dev))) {
134        case PCI_QLOGIC_ISP8030:
135		snprintf(dev_str, sizeof(dev_str), "%s v%d.%d.%d",
136			"Qlogic ISP 83xx PCI CNA Adapter-Ethernet Function",
137			QLA_VERSION_MAJOR, QLA_VERSION_MINOR,
138			QLA_VERSION_BUILD);
139		snprintf(ver_str, sizeof(ver_str), "v%d.%d.%d",
140			QLA_VERSION_MAJOR, QLA_VERSION_MINOR,
141			QLA_VERSION_BUILD);
142                device_set_desc(dev, dev_str);
143                break;
144        default:
145                return (ENXIO);
146        }
147
148        if (bootverbose)
149                printf("%s: %s\n ", __func__, dev_str);
150
151        return (BUS_PROBE_DEFAULT);
152}
153
154static void
155qla_add_sysctls(qla_host_t *ha)
156{
157        device_t dev = ha->pci_dev;
158
159	SYSCTL_ADD_STRING(device_get_sysctl_ctx(dev),
160		SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
161		OID_AUTO, "version", CTLFLAG_RD,
162		ver_str, 0, "Driver Version");
163
164        SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
165                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
166                OID_AUTO, "stats", CTLTYPE_INT | CTLFLAG_RW,
167                (void *)ha, 0,
168                qla_sysctl_get_stats, "I", "Statistics");
169
170        SYSCTL_ADD_STRING(device_get_sysctl_ctx(dev),
171                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
172                OID_AUTO, "fw_version", CTLFLAG_RD,
173                ha->fw_ver_str, 0, "firmware version");
174
175        SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
176                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
177                OID_AUTO, "link_status", CTLTYPE_INT | CTLFLAG_RW,
178                (void *)ha, 0,
179                qla_sysctl_get_link_status, "I", "Link Status");
180
181	ha->dbg_level = 0;
182        SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
183                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
184                OID_AUTO, "debug", CTLFLAG_RW,
185                &ha->dbg_level, ha->dbg_level, "Debug Level");
186
187	ha->std_replenish = QL_STD_REPLENISH_THRES;
188        SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
189                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
190                OID_AUTO, "std_replenish", CTLFLAG_RW,
191                &ha->std_replenish, ha->std_replenish,
192                "Threshold for Replenishing Standard Frames");
193
194        SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
195                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
196                OID_AUTO, "ipv4_lro",
197                CTLFLAG_RD, &ha->ipv4_lro,
198                "number of ipv4 lro completions");
199
200        SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
201                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
202                OID_AUTO, "ipv6_lro",
203                CTLFLAG_RD, &ha->ipv6_lro,
204                "number of ipv6 lro completions");
205
206	SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
207		SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
208		OID_AUTO, "tx_tso_frames",
209		CTLFLAG_RD, &ha->tx_tso_frames,
210		"number of Tx TSO Frames");
211
212	SYSCTL_ADD_QUAD(device_get_sysctl_ctx(dev),
213                SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
214		OID_AUTO, "hw_vlan_tx_frames",
215		CTLFLAG_RD, &ha->hw_vlan_tx_frames,
216		"number of Tx VLAN Frames");
217
218        return;
219}
220
221static void
222qla_watchdog(void *arg)
223{
224	qla_host_t *ha = arg;
225	qla_hw_t *hw;
226	struct ifnet *ifp;
227	uint32_t i;
228	qla_hw_tx_cntxt_t *hw_tx_cntxt;
229
230	hw = &ha->hw;
231	ifp = ha->ifp;
232
233        if (ha->flags.qla_watchdog_exit) {
234		ha->qla_watchdog_exited = 1;
235		return;
236	}
237	ha->qla_watchdog_exited = 0;
238
239	if (!ha->flags.qla_watchdog_pause) {
240		if (ql_hw_check_health(ha) || ha->qla_initiate_recovery ||
241			(ha->msg_from_peer == QL_PEER_MSG_RESET)) {
242			ha->qla_watchdog_paused = 1;
243			ha->flags.qla_watchdog_pause = 1;
244			ha->qla_initiate_recovery = 0;
245			ha->err_inject = 0;
246			taskqueue_enqueue(ha->err_tq, &ha->err_task);
247		} else {
248
249                        if (ha->async_event) {
250                                ha->async_event = 0;
251                                taskqueue_enqueue(ha->async_event_tq,
252                                        &ha->async_event_task);
253                        }
254
255			for (i = 0; i < ha->hw.num_tx_rings; i++) {
256				hw_tx_cntxt = &hw->tx_cntxt[i];
257				if (qla_le32_to_host(*(hw_tx_cntxt->tx_cons)) !=
258					hw_tx_cntxt->txr_comp) {
259					taskqueue_enqueue(ha->tx_tq,
260						&ha->tx_task);
261					break;
262				}
263			}
264
265			if ((ifp->if_snd.ifq_head != NULL) && QL_RUNNING(ifp)) {
266				taskqueue_enqueue(ha->tx_tq, &ha->tx_task);
267			}
268			ha->qla_watchdog_paused = 0;
269		}
270
271	} else {
272		ha->qla_watchdog_paused = 1;
273	}
274
275	ha->watchdog_ticks = ha->watchdog_ticks++ % 1000;
276	callout_reset(&ha->tx_callout, QLA_WATCHDOG_CALLOUT_TICKS,
277		qla_watchdog, ha);
278}
279
280/*
281 * Name:	qla_pci_attach
282 * Function:	attaches the device to the operating system
283 */
284static int
285qla_pci_attach(device_t dev)
286{
287	qla_host_t *ha = NULL;
288	uint32_t rsrc_len;
289	int i;
290	uint32_t num_rcvq = 0;
291
292	QL_DPRINT2(ha, (dev, "%s: enter\n", __func__));
293
294        if ((ha = device_get_softc(dev)) == NULL) {
295                device_printf(dev, "cannot get softc\n");
296                return (ENOMEM);
297        }
298
299        memset(ha, 0, sizeof (qla_host_t));
300
301        if (pci_get_device(dev) != PCI_PRODUCT_QLOGIC_ISP8030) {
302                device_printf(dev, "device is not ISP8030\n");
303                return (ENXIO);
304	}
305
306        ha->pci_func = pci_get_function(dev);
307
308        ha->pci_dev = dev;
309
310	pci_enable_busmaster(dev);
311
312	ha->reg_rid = PCIR_BAR(0);
313	ha->pci_reg = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &ha->reg_rid,
314				RF_ACTIVE);
315
316        if (ha->pci_reg == NULL) {
317                device_printf(dev, "unable to map any ports\n");
318                goto qla_pci_attach_err;
319        }
320
321	rsrc_len = (uint32_t) bus_get_resource_count(dev, SYS_RES_MEMORY,
322					ha->reg_rid);
323
324	mtx_init(&ha->hw_lock, "qla83xx_hw_lock", MTX_NETWORK_LOCK, MTX_DEF);
325
326	mtx_init(&ha->tx_lock, "qla83xx_tx_lock", MTX_NETWORK_LOCK, MTX_DEF);
327
328	qla_add_sysctls(ha);
329	ql_hw_add_sysctls(ha);
330
331	ha->flags.lock_init = 1;
332
333	ha->reg_rid1 = PCIR_BAR(2);
334	ha->pci_reg1 = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
335			&ha->reg_rid1, RF_ACTIVE);
336
337	ha->msix_count = pci_msix_count(dev);
338
339	if (ha->msix_count < (ha->hw.num_sds_rings + 1)) {
340		device_printf(dev, "%s: msix_count[%d] not enough\n", __func__,
341			ha->msix_count);
342		goto qla_pci_attach_err;
343	}
344
345	QL_DPRINT2(ha, (dev, "%s: ha %p pci_func 0x%x rsrc_count 0x%08x"
346		" msix_count 0x%x pci_reg %p\n", __func__, ha,
347		ha->pci_func, rsrc_len, ha->msix_count, ha->pci_reg));
348
349        /* initialize hardware */
350        if (ql_init_hw(ha)) {
351                device_printf(dev, "%s: ql_init_hw failed\n", __func__);
352                goto qla_pci_attach_err;
353        }
354
355        device_printf(dev, "%s: firmware[%d.%d.%d.%d]\n", __func__,
356                ha->fw_ver_major, ha->fw_ver_minor, ha->fw_ver_sub,
357                ha->fw_ver_build);
358        snprintf(ha->fw_ver_str, sizeof(ha->fw_ver_str), "%d.%d.%d.%d",
359                        ha->fw_ver_major, ha->fw_ver_minor, ha->fw_ver_sub,
360                        ha->fw_ver_build);
361
362        if (qla_get_nic_partition(ha, NULL, &num_rcvq)) {
363                device_printf(dev, "%s: qla_get_nic_partition failed\n",
364                        __func__);
365                goto qla_pci_attach_err;
366        }
367        device_printf(dev, "%s: ha %p pci_func 0x%x rsrc_count 0x%08x"
368                " msix_count 0x%x pci_reg %p num_rcvq = %d\n", __func__, ha,
369                ha->pci_func, rsrc_len, ha->msix_count, ha->pci_reg, num_rcvq);
370
371
372#ifdef QL_ENABLE_ISCSI_TLV
373        if ((ha->msix_count  < 64) || (num_rcvq != 32)) {
374                ha->hw.num_sds_rings = 15;
375                ha->hw.num_tx_rings = 32;
376        }
377#endif /* #ifdef QL_ENABLE_ISCSI_TLV */
378	ha->hw.num_rds_rings = ha->hw.num_sds_rings;
379
380	ha->msix_count = ha->hw.num_sds_rings + 1;
381
382	if (pci_alloc_msix(dev, &ha->msix_count)) {
383		device_printf(dev, "%s: pci_alloc_msi[%d] failed\n", __func__,
384			ha->msix_count);
385		ha->msix_count = 0;
386		goto qla_pci_attach_err;
387	}
388
389	ha->mbx_irq_rid = 1;
390	ha->mbx_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
391				&ha->mbx_irq_rid,
392				(RF_ACTIVE | RF_SHAREABLE));
393	if (ha->mbx_irq == NULL) {
394		device_printf(dev, "could not allocate mbx interrupt\n");
395		goto qla_pci_attach_err;
396	}
397	if (bus_setup_intr(dev, ha->mbx_irq, (INTR_TYPE_NET | INTR_MPSAFE),
398		NULL, ql_mbx_isr, ha, &ha->mbx_handle)) {
399		device_printf(dev, "could not setup mbx interrupt\n");
400		goto qla_pci_attach_err;
401	}
402
403
404	for (i = 0; i < ha->hw.num_sds_rings; i++) {
405		ha->irq_vec[i].sds_idx = i;
406                ha->irq_vec[i].ha = ha;
407                ha->irq_vec[i].irq_rid = 2 + i;
408
409		ha->irq_vec[i].irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
410				&ha->irq_vec[i].irq_rid,
411				(RF_ACTIVE | RF_SHAREABLE));
412
413		if (ha->irq_vec[i].irq == NULL) {
414			device_printf(dev, "could not allocate interrupt\n");
415			goto qla_pci_attach_err;
416		}
417		if (bus_setup_intr(dev, ha->irq_vec[i].irq,
418			(INTR_TYPE_NET | INTR_MPSAFE),
419			NULL, ql_isr, &ha->irq_vec[i],
420			&ha->irq_vec[i].handle)) {
421			device_printf(dev, "could not setup interrupt\n");
422			goto qla_pci_attach_err;
423		}
424	}
425
426	printf("%s: mp__ncpus %d sds %d rds %d msi-x %d\n", __func__, mp_ncpus,
427		ha->hw.num_sds_rings, ha->hw.num_rds_rings, ha->msix_count);
428
429	ql_read_mac_addr(ha);
430
431	/* allocate parent dma tag */
432	if (qla_alloc_parent_dma_tag(ha)) {
433		device_printf(dev, "%s: qla_alloc_parent_dma_tag failed\n",
434			__func__);
435		goto qla_pci_attach_err;
436	}
437
438	/* alloc all dma buffers */
439	if (ql_alloc_dma(ha)) {
440		device_printf(dev, "%s: ql_alloc_dma failed\n", __func__);
441		goto qla_pci_attach_err;
442	}
443	qla_get_peer(ha);
444
445	/* create the o.s ethernet interface */
446	qla_init_ifnet(dev, ha);
447
448	ha->flags.qla_watchdog_active = 1;
449	ha->flags.qla_watchdog_pause = 1;
450
451
452	TASK_INIT(&ha->tx_task, 0, qla_tx_done, ha);
453	ha->tx_tq = taskqueue_create_fast("qla_txq", M_NOWAIT,
454			taskqueue_thread_enqueue, &ha->tx_tq);
455	taskqueue_start_threads(&ha->tx_tq, 1, PI_NET, "%s txq",
456		device_get_nameunit(ha->pci_dev));
457
458	callout_init(&ha->tx_callout, TRUE);
459	ha->flags.qla_callout_init = 1;
460
461	/* create ioctl device interface */
462	if (ql_make_cdev(ha)) {
463		device_printf(dev, "%s: ql_make_cdev failed\n", __func__);
464		goto qla_pci_attach_err;
465	}
466
467	callout_reset(&ha->tx_callout, QLA_WATCHDOG_CALLOUT_TICKS,
468		qla_watchdog, ha);
469
470	TASK_INIT(&ha->err_task, 0, qla_error_recovery, ha);
471	ha->err_tq = taskqueue_create_fast("qla_errq", M_NOWAIT,
472			taskqueue_thread_enqueue, &ha->err_tq);
473	taskqueue_start_threads(&ha->err_tq, 1, PI_NET, "%s errq",
474		device_get_nameunit(ha->pci_dev));
475
476        TASK_INIT(&ha->async_event_task, 0, qla_async_event, ha);
477        ha->async_event_tq = taskqueue_create_fast("qla_asyncq", M_NOWAIT,
478                        taskqueue_thread_enqueue, &ha->async_event_tq);
479        taskqueue_start_threads(&ha->async_event_tq, 1, PI_NET, "%s asyncq",
480                device_get_nameunit(ha->pci_dev));
481
482	QL_DPRINT2(ha, (dev, "%s: exit 0\n", __func__));
483        return (0);
484
485qla_pci_attach_err:
486
487	qla_release(ha);
488
489	QL_DPRINT2(ha, (dev, "%s: exit ENXIO\n", __func__));
490        return (ENXIO);
491}
492
493/*
494 * Name:	qla_pci_detach
495 * Function:	Unhooks the device from the operating system
496 */
497static int
498qla_pci_detach(device_t dev)
499{
500	qla_host_t *ha = NULL;
501	struct ifnet *ifp;
502
503	QL_DPRINT2(ha, (dev, "%s: enter\n", __func__));
504
505        if ((ha = device_get_softc(dev)) == NULL) {
506                device_printf(dev, "cannot get softc\n");
507                return (ENOMEM);
508        }
509
510	ifp = ha->ifp;
511
512	(void)QLA_LOCK(ha, __func__, 0);
513	qla_stop(ha);
514	QLA_UNLOCK(ha, __func__);
515
516	qla_release(ha);
517
518	QL_DPRINT2(ha, (dev, "%s: exit\n", __func__));
519
520        return (0);
521}
522
523/*
524 * SYSCTL Related Callbacks
525 */
526static int
527qla_sysctl_get_stats(SYSCTL_HANDLER_ARGS)
528{
529	int err, ret = 0;
530	qla_host_t *ha;
531
532	err = sysctl_handle_int(oidp, &ret, 0, req);
533
534	if (err || !req->newptr)
535		return (err);
536
537	if (ret == 1) {
538		ha = (qla_host_t *)arg1;
539		ql_get_stats(ha);
540	}
541	return (err);
542}
543static int
544qla_sysctl_get_link_status(SYSCTL_HANDLER_ARGS)
545{
546	int err, ret = 0;
547	qla_host_t *ha;
548
549	err = sysctl_handle_int(oidp, &ret, 0, req);
550
551	if (err || !req->newptr)
552		return (err);
553
554	if (ret == 1) {
555		ha = (qla_host_t *)arg1;
556		ql_hw_link_status(ha);
557	}
558	return (err);
559}
560
561/*
562 * Name:	qla_release
563 * Function:	Releases the resources allocated for the device
564 */
565static void
566qla_release(qla_host_t *ha)
567{
568	device_t dev;
569	int i;
570
571	dev = ha->pci_dev;
572
573        if (ha->async_event_tq) {
574                taskqueue_drain(ha->async_event_tq, &ha->async_event_task);
575                taskqueue_free(ha->async_event_tq);
576        }
577
578	if (ha->err_tq) {
579		taskqueue_drain(ha->err_tq, &ha->err_task);
580		taskqueue_free(ha->err_tq);
581	}
582
583	if (ha->tx_tq) {
584		taskqueue_drain(ha->tx_tq, &ha->tx_task);
585		taskqueue_free(ha->tx_tq);
586	}
587
588	ql_del_cdev(ha);
589
590	if (ha->flags.qla_watchdog_active) {
591		ha->flags.qla_watchdog_exit = 1;
592
593		while (ha->qla_watchdog_exited == 0)
594			qla_mdelay(__func__, 1);
595	}
596
597	if (ha->flags.qla_callout_init)
598		callout_stop(&ha->tx_callout);
599
600	if (ha->ifp != NULL)
601		ether_ifdetach(ha->ifp);
602
603	ql_free_dma(ha);
604	qla_free_parent_dma_tag(ha);
605
606	if (ha->mbx_handle)
607		(void)bus_teardown_intr(dev, ha->mbx_irq, ha->mbx_handle);
608
609	if (ha->mbx_irq)
610		(void) bus_release_resource(dev, SYS_RES_IRQ, ha->mbx_irq_rid,
611				ha->mbx_irq);
612
613	for (i = 0; i < ha->hw.num_sds_rings; i++) {
614
615		if (ha->irq_vec[i].handle) {
616			(void)bus_teardown_intr(dev, ha->irq_vec[i].irq,
617					ha->irq_vec[i].handle);
618		}
619
620		if (ha->irq_vec[i].irq) {
621			(void)bus_release_resource(dev, SYS_RES_IRQ,
622				ha->irq_vec[i].irq_rid,
623				ha->irq_vec[i].irq);
624		}
625	}
626
627	if (ha->msix_count)
628		pci_release_msi(dev);
629
630	if (ha->flags.lock_init) {
631		mtx_destroy(&ha->tx_lock);
632		mtx_destroy(&ha->hw_lock);
633	}
634
635        if (ha->pci_reg)
636                (void) bus_release_resource(dev, SYS_RES_MEMORY, ha->reg_rid,
637				ha->pci_reg);
638
639        if (ha->pci_reg1)
640                (void) bus_release_resource(dev, SYS_RES_MEMORY, ha->reg_rid1,
641				ha->pci_reg1);
642}
643
644/*
645 * DMA Related Functions
646 */
647
648static void
649qla_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
650{
651        *((bus_addr_t *)arg) = 0;
652
653        if (error) {
654                printf("%s: bus_dmamap_load failed (%d)\n", __func__, error);
655                return;
656	}
657
658        *((bus_addr_t *)arg) = segs[0].ds_addr;
659
660	return;
661}
662
663int
664ql_alloc_dmabuf(qla_host_t *ha, qla_dma_t *dma_buf)
665{
666        int             ret = 0;
667        device_t        dev;
668        bus_addr_t      b_addr;
669
670        dev = ha->pci_dev;
671
672        QL_DPRINT2(ha, (dev, "%s: enter\n", __func__));
673
674        ret = bus_dma_tag_create(
675                        ha->parent_tag,/* parent */
676                        dma_buf->alignment,
677                        ((bus_size_t)(1ULL << 32)),/* boundary */
678                        BUS_SPACE_MAXADDR,      /* lowaddr */
679                        BUS_SPACE_MAXADDR,      /* highaddr */
680                        NULL, NULL,             /* filter, filterarg */
681                        dma_buf->size,          /* maxsize */
682                        1,                      /* nsegments */
683                        dma_buf->size,          /* maxsegsize */
684                        0,                      /* flags */
685                        NULL, NULL,             /* lockfunc, lockarg */
686                        &dma_buf->dma_tag);
687
688        if (ret) {
689                device_printf(dev, "%s: could not create dma tag\n", __func__);
690                goto ql_alloc_dmabuf_exit;
691        }
692        ret = bus_dmamem_alloc(dma_buf->dma_tag,
693                        (void **)&dma_buf->dma_b,
694                        (BUS_DMA_ZERO | BUS_DMA_COHERENT | BUS_DMA_NOWAIT),
695                        &dma_buf->dma_map);
696        if (ret) {
697                bus_dma_tag_destroy(dma_buf->dma_tag);
698                device_printf(dev, "%s: bus_dmamem_alloc failed\n", __func__);
699                goto ql_alloc_dmabuf_exit;
700        }
701
702        ret = bus_dmamap_load(dma_buf->dma_tag,
703                        dma_buf->dma_map,
704                        dma_buf->dma_b,
705                        dma_buf->size,
706                        qla_dmamap_callback,
707                        &b_addr, BUS_DMA_NOWAIT);
708
709        if (ret || !b_addr) {
710                bus_dma_tag_destroy(dma_buf->dma_tag);
711                bus_dmamem_free(dma_buf->dma_tag, dma_buf->dma_b,
712                        dma_buf->dma_map);
713                ret = -1;
714                goto ql_alloc_dmabuf_exit;
715        }
716
717        dma_buf->dma_addr = b_addr;
718
719ql_alloc_dmabuf_exit:
720        QL_DPRINT2(ha, (dev, "%s: exit ret 0x%08x tag %p map %p b %p sz 0x%x\n",
721                __func__, ret, (void *)dma_buf->dma_tag,
722                (void *)dma_buf->dma_map, (void *)dma_buf->dma_b,
723		dma_buf->size));
724
725        return ret;
726}
727
728void
729ql_free_dmabuf(qla_host_t *ha, qla_dma_t *dma_buf)
730{
731        bus_dmamem_free(dma_buf->dma_tag, dma_buf->dma_b, dma_buf->dma_map);
732        bus_dma_tag_destroy(dma_buf->dma_tag);
733}
734
735static int
736qla_alloc_parent_dma_tag(qla_host_t *ha)
737{
738	int		ret;
739	device_t	dev;
740
741	dev = ha->pci_dev;
742
743        /*
744         * Allocate parent DMA Tag
745         */
746        ret = bus_dma_tag_create(
747                        bus_get_dma_tag(dev),   /* parent */
748                        1,((bus_size_t)(1ULL << 32)),/* alignment, boundary */
749                        BUS_SPACE_MAXADDR,      /* lowaddr */
750                        BUS_SPACE_MAXADDR,      /* highaddr */
751                        NULL, NULL,             /* filter, filterarg */
752                        BUS_SPACE_MAXSIZE_32BIT,/* maxsize */
753                        0,                      /* nsegments */
754                        BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */
755                        0,                      /* flags */
756                        NULL, NULL,             /* lockfunc, lockarg */
757                        &ha->parent_tag);
758
759        if (ret) {
760                device_printf(dev, "%s: could not create parent dma tag\n",
761                        __func__);
762		return (-1);
763        }
764
765        ha->flags.parent_tag = 1;
766
767	return (0);
768}
769
770static void
771qla_free_parent_dma_tag(qla_host_t *ha)
772{
773        if (ha->flags.parent_tag) {
774                bus_dma_tag_destroy(ha->parent_tag);
775                ha->flags.parent_tag = 0;
776        }
777}
778
779/*
780 * Name: qla_init_ifnet
781 * Function: Creates the Network Device Interface and Registers it with the O.S
782 */
783
784static void
785qla_init_ifnet(device_t dev, qla_host_t *ha)
786{
787	struct ifnet *ifp;
788
789	QL_DPRINT2(ha, (dev, "%s: enter\n", __func__));
790
791	ifp = ha->ifp = if_alloc(IFT_ETHER);
792
793	if (ifp == NULL)
794		panic("%s: cannot if_alloc()\n", device_get_nameunit(dev));
795
796	if_initname(ifp, device_get_name(dev), device_get_unit(dev));
797
798#if __FreeBSD_version >= 1000000
799	if_initbaudrate(ifp, IF_Gbps(10));
800	ifp->if_capabilities = IFCAP_LINKSTATE;
801#else
802	ifp->if_mtu = ETHERMTU;
803	ifp->if_baudrate = (1 * 1000 * 1000 *1000);
804
805#endif /* #if __FreeBSD_version >= 1000000 */
806
807	ifp->if_init = qla_init;
808	ifp->if_softc = ha;
809	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
810	ifp->if_ioctl = qla_ioctl;
811	ifp->if_start = qla_start;
812
813	IFQ_SET_MAXLEN(&ifp->if_snd, qla_get_ifq_snd_maxlen(ha));
814	ifp->if_snd.ifq_drv_maxlen = qla_get_ifq_snd_maxlen(ha);
815	IFQ_SET_READY(&ifp->if_snd);
816
817	ha->max_frame_size = ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
818
819	ether_ifattach(ifp, qla_get_mac_addr(ha));
820
821	ifp->if_capabilities = IFCAP_HWCSUM |
822				IFCAP_TSO4 |
823				IFCAP_JUMBO_MTU;
824
825	ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU;
826	ifp->if_capabilities |= IFCAP_VLAN_HWTSO;
827
828	ifp->if_capenable = ifp->if_capabilities;
829
830	ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
831
832	ifmedia_init(&ha->media, IFM_IMASK, qla_media_change, qla_media_status);
833
834	ifmedia_add(&ha->media, (IFM_ETHER | qla_get_optics(ha) | IFM_FDX), 0,
835		NULL);
836	ifmedia_add(&ha->media, (IFM_ETHER | IFM_AUTO), 0, NULL);
837
838	ifmedia_set(&ha->media, (IFM_ETHER | IFM_AUTO));
839
840	QL_DPRINT2(ha, (dev, "%s: exit\n", __func__));
841
842	return;
843}
844
845static void
846qla_init_locked(qla_host_t *ha)
847{
848	struct ifnet *ifp = ha->ifp;
849
850	qla_stop(ha);
851
852	if (qla_alloc_xmt_bufs(ha) != 0)
853		return;
854
855	qla_confirm_9kb_enable(ha);
856
857	if (qla_alloc_rcv_bufs(ha) != 0)
858		return;
859
860	bcopy(IF_LLADDR(ha->ifp), ha->hw.mac_addr, ETHER_ADDR_LEN);
861
862	ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_TSO;
863
864	ha->flags.stop_rcv = 0;
865 	if (ql_init_hw_if(ha) == 0) {
866		ifp = ha->ifp;
867		ifp->if_drv_flags |= IFF_DRV_RUNNING;
868		ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
869		ha->flags.qla_watchdog_pause = 0;
870		ha->hw_vlan_tx_frames = 0;
871		ha->tx_tso_frames = 0;
872	}
873
874	return;
875}
876
877static void
878qla_init(void *arg)
879{
880	qla_host_t *ha;
881
882	ha = (qla_host_t *)arg;
883
884	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
885
886	(void)QLA_LOCK(ha, __func__, 0);
887	qla_init_locked(ha);
888	QLA_UNLOCK(ha, __func__);
889
890	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit\n", __func__));
891}
892
893static int
894qla_set_multi(qla_host_t *ha, uint32_t add_multi)
895{
896	uint8_t mta[Q8_MAX_NUM_MULTICAST_ADDRS * Q8_MAC_ADDR_LEN];
897	struct ifmultiaddr *ifma;
898	int mcnt = 0;
899	struct ifnet *ifp = ha->ifp;
900	int ret = 0;
901
902	if_maddr_rlock(ifp);
903
904	TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
905
906		if (ifma->ifma_addr->sa_family != AF_LINK)
907			continue;
908
909		if (mcnt == Q8_MAX_NUM_MULTICAST_ADDRS)
910			break;
911
912		bcopy(LLADDR((struct sockaddr_dl *) ifma->ifma_addr),
913			&mta[mcnt * Q8_MAC_ADDR_LEN], Q8_MAC_ADDR_LEN);
914
915		mcnt++;
916	}
917
918	if_maddr_runlock(ifp);
919
920	if (QLA_LOCK(ha, __func__, 1) == 0) {
921		ret = ql_hw_set_multi(ha, mta, mcnt, add_multi);
922		QLA_UNLOCK(ha, __func__);
923	}
924
925	return (ret);
926}
927
928static int
929qla_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
930{
931	int ret = 0;
932	struct ifreq *ifr = (struct ifreq *)data;
933	struct ifaddr *ifa = (struct ifaddr *)data;
934	qla_host_t *ha;
935
936	ha = (qla_host_t *)ifp->if_softc;
937
938	switch (cmd) {
939	case SIOCSIFADDR:
940		QL_DPRINT4(ha, (ha->pci_dev, "%s: SIOCSIFADDR (0x%lx)\n",
941			__func__, cmd));
942
943		if (ifa->ifa_addr->sa_family == AF_INET) {
944			ifp->if_flags |= IFF_UP;
945			if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
946				(void)QLA_LOCK(ha, __func__, 0);
947				qla_init_locked(ha);
948				QLA_UNLOCK(ha, __func__);
949			}
950			QL_DPRINT4(ha, (ha->pci_dev,
951				"%s: SIOCSIFADDR (0x%lx) ipv4 [0x%08x]\n",
952				__func__, cmd,
953				ntohl(IA_SIN(ifa)->sin_addr.s_addr)));
954
955			arp_ifinit(ifp, ifa);
956		} else {
957			ether_ioctl(ifp, cmd, data);
958		}
959		break;
960
961	case SIOCSIFMTU:
962		QL_DPRINT4(ha, (ha->pci_dev, "%s: SIOCSIFMTU (0x%lx)\n",
963			__func__, cmd));
964
965		if (ifr->ifr_mtu > QLA_MAX_MTU) {
966			ret = EINVAL;
967		} else {
968			(void) QLA_LOCK(ha, __func__, 0);
969			ifp->if_mtu = ifr->ifr_mtu;
970			ha->max_frame_size =
971				ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
972			if ((ifp->if_drv_flags & IFF_DRV_RUNNING)) {
973				ret = ql_set_max_mtu(ha, ha->max_frame_size,
974					ha->hw.rcv_cntxt_id);
975			}
976
977			if (ifp->if_mtu > ETHERMTU)
978				ha->std_replenish = QL_JUMBO_REPLENISH_THRES;
979			else
980				ha->std_replenish = QL_STD_REPLENISH_THRES;
981
982
983			QLA_UNLOCK(ha, __func__);
984
985			if (ret)
986				ret = EINVAL;
987		}
988
989		break;
990
991	case SIOCSIFFLAGS:
992		QL_DPRINT4(ha, (ha->pci_dev, "%s: SIOCSIFFLAGS (0x%lx)\n",
993			__func__, cmd));
994
995		(void)QLA_LOCK(ha, __func__, 0);
996
997		if (ifp->if_flags & IFF_UP) {
998			if ((ifp->if_drv_flags & IFF_DRV_RUNNING)) {
999				if ((ifp->if_flags ^ ha->if_flags) &
1000					IFF_PROMISC) {
1001					ret = ql_set_promisc(ha);
1002				} else if ((ifp->if_flags ^ ha->if_flags) &
1003					IFF_ALLMULTI) {
1004					ret = ql_set_allmulti(ha);
1005				}
1006			} else {
1007				qla_init_locked(ha);
1008				ha->max_frame_size = ifp->if_mtu +
1009					ETHER_HDR_LEN + ETHER_CRC_LEN;
1010				ret = ql_set_max_mtu(ha, ha->max_frame_size,
1011					ha->hw.rcv_cntxt_id);
1012			}
1013		} else {
1014			if (ifp->if_drv_flags & IFF_DRV_RUNNING)
1015				qla_stop(ha);
1016			ha->if_flags = ifp->if_flags;
1017		}
1018
1019		QLA_UNLOCK(ha, __func__);
1020		break;
1021
1022	case SIOCADDMULTI:
1023		QL_DPRINT4(ha, (ha->pci_dev,
1024			"%s: %s (0x%lx)\n", __func__, "SIOCADDMULTI", cmd));
1025
1026		if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1027			if (qla_set_multi(ha, 1))
1028				ret = EINVAL;
1029		}
1030		break;
1031
1032	case SIOCDELMULTI:
1033		QL_DPRINT4(ha, (ha->pci_dev,
1034			"%s: %s (0x%lx)\n", __func__, "SIOCDELMULTI", cmd));
1035
1036		if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1037			if (qla_set_multi(ha, 0))
1038				ret = EINVAL;
1039		}
1040		break;
1041
1042	case SIOCSIFMEDIA:
1043	case SIOCGIFMEDIA:
1044		QL_DPRINT4(ha, (ha->pci_dev,
1045			"%s: SIOCSIFMEDIA/SIOCGIFMEDIA (0x%lx)\n",
1046			__func__, cmd));
1047		ret = ifmedia_ioctl(ifp, ifr, &ha->media, cmd);
1048		break;
1049
1050	case SIOCSIFCAP:
1051	{
1052		int mask = ifr->ifr_reqcap ^ ifp->if_capenable;
1053
1054		QL_DPRINT4(ha, (ha->pci_dev, "%s: SIOCSIFCAP (0x%lx)\n",
1055			__func__, cmd));
1056
1057		if (mask & IFCAP_HWCSUM)
1058			ifp->if_capenable ^= IFCAP_HWCSUM;
1059		if (mask & IFCAP_TSO4)
1060			ifp->if_capenable ^= IFCAP_TSO4;
1061		if (mask & IFCAP_VLAN_HWTAGGING)
1062			ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
1063		if (mask & IFCAP_VLAN_HWTSO)
1064			ifp->if_capenable ^= IFCAP_VLAN_HWTSO;
1065
1066		if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
1067			qla_init(ha);
1068
1069		VLAN_CAPABILITIES(ifp);
1070		break;
1071	}
1072
1073	default:
1074		QL_DPRINT4(ha, (ha->pci_dev, "%s: default (0x%lx)\n",
1075			__func__, cmd));
1076		ret = ether_ioctl(ifp, cmd, data);
1077		break;
1078	}
1079
1080	return (ret);
1081}
1082
1083static int
1084qla_media_change(struct ifnet *ifp)
1085{
1086	qla_host_t *ha;
1087	struct ifmedia *ifm;
1088	int ret = 0;
1089
1090	ha = (qla_host_t *)ifp->if_softc;
1091
1092	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
1093
1094	ifm = &ha->media;
1095
1096	if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1097		ret = EINVAL;
1098
1099	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit\n", __func__));
1100
1101	return (ret);
1102}
1103
1104static void
1105qla_media_status(struct ifnet *ifp, struct ifmediareq *ifmr)
1106{
1107	qla_host_t *ha;
1108
1109	ha = (qla_host_t *)ifp->if_softc;
1110
1111	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
1112
1113	ifmr->ifm_status = IFM_AVALID;
1114	ifmr->ifm_active = IFM_ETHER;
1115
1116	ql_update_link_state(ha);
1117	if (ha->hw.link_up) {
1118		ifmr->ifm_status |= IFM_ACTIVE;
1119		ifmr->ifm_active |= (IFM_FDX | qla_get_optics(ha));
1120	}
1121
1122	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit (%s)\n", __func__,\
1123		(ha->hw.link_up ? "link_up" : "link_down")));
1124
1125	return;
1126}
1127
1128static void
1129qla_start(struct ifnet *ifp)
1130{
1131	struct mbuf    *m_head;
1132	qla_host_t *ha = (qla_host_t *)ifp->if_softc;
1133
1134	QL_DPRINT8(ha, (ha->pci_dev, "%s: enter\n", __func__));
1135
1136	if (!mtx_trylock(&ha->tx_lock)) {
1137		QL_DPRINT8(ha, (ha->pci_dev,
1138			"%s: mtx_trylock(&ha->tx_lock) failed\n", __func__));
1139		return;
1140	}
1141
1142	if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
1143		IFF_DRV_RUNNING) {
1144		QL_DPRINT8(ha,
1145			(ha->pci_dev, "%s: !IFF_DRV_RUNNING\n", __func__));
1146		QLA_TX_UNLOCK(ha);
1147		return;
1148	}
1149
1150	if (!ha->hw.link_up || !ha->watchdog_ticks)
1151		ql_update_link_state(ha);
1152
1153	if (!ha->hw.link_up) {
1154		QL_DPRINT8(ha, (ha->pci_dev, "%s: link down\n", __func__));
1155		QLA_TX_UNLOCK(ha);
1156		return;
1157	}
1158
1159	while (ifp->if_snd.ifq_head != NULL) {
1160		IF_DEQUEUE(&ifp->if_snd, m_head);
1161
1162		if (m_head == NULL) {
1163			QL_DPRINT8(ha, (ha->pci_dev, "%s: m_head == NULL\n",
1164				__func__));
1165			break;
1166		}
1167
1168		if (qla_send(ha, &m_head)) {
1169			if (m_head == NULL)
1170				break;
1171			QL_DPRINT8(ha, (ha->pci_dev, "%s: PREPEND\n", __func__));
1172			ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1173			IF_PREPEND(&ifp->if_snd, m_head);
1174			break;
1175		}
1176		/* Send a copy of the frame to the BPF listener */
1177		ETHER_BPF_MTAP(ifp, m_head);
1178	}
1179	QLA_TX_UNLOCK(ha);
1180	QL_DPRINT8(ha, (ha->pci_dev, "%s: exit\n", __func__));
1181	return;
1182}
1183
1184static int
1185qla_send(qla_host_t *ha, struct mbuf **m_headp)
1186{
1187	bus_dma_segment_t	segs[QLA_MAX_SEGMENTS];
1188	bus_dmamap_t		map;
1189	int			nsegs;
1190	int			ret = -1;
1191	uint32_t		tx_idx;
1192	struct mbuf		*m_head = *m_headp;
1193	uint32_t		txr_idx = ha->txr_idx;
1194	uint32_t		iscsi_pdu = 0;
1195
1196	QL_DPRINT8(ha, (ha->pci_dev, "%s: enter\n", __func__));
1197
1198	/* check if flowid is set */
1199
1200	if (M_HASHTYPE_GET(m_head) != M_HASHTYPE_NONE) {
1201#ifdef QL_ENABLE_ISCSI_TLV
1202		if (qla_iscsi_pdu(ha, m_head) == 0) {
1203			iscsi_pdu = 1;
1204			txr_idx = m_head->m_pkthdr.flowid &
1205					((ha->hw.num_tx_rings >> 1) - 1);
1206		} else {
1207			txr_idx = m_head->m_pkthdr.flowid &
1208					(ha->hw.num_tx_rings - 1);
1209		}
1210#else
1211		txr_idx = m_head->m_pkthdr.flowid & (ha->hw.num_tx_rings - 1);
1212#endif /* #ifdef QL_ENABLE_ISCSI_TLV */
1213	}
1214
1215
1216	tx_idx = ha->hw.tx_cntxt[txr_idx].txr_next;
1217	map = ha->tx_ring[txr_idx].tx_buf[tx_idx].map;
1218
1219	ret = bus_dmamap_load_mbuf_sg(ha->tx_tag, map, m_head, segs, &nsegs,
1220			BUS_DMA_NOWAIT);
1221
1222	if (ret == EFBIG) {
1223
1224		struct mbuf *m;
1225
1226		QL_DPRINT8(ha, (ha->pci_dev, "%s: EFBIG [%d]\n", __func__,
1227			m_head->m_pkthdr.len));
1228
1229		m = m_defrag(m_head, M_NOWAIT);
1230		if (m == NULL) {
1231			ha->err_tx_defrag++;
1232			m_freem(m_head);
1233			*m_headp = NULL;
1234			device_printf(ha->pci_dev,
1235				"%s: m_defrag() = NULL [%d]\n",
1236				__func__, ret);
1237			return (ENOBUFS);
1238		}
1239		m_head = m;
1240		*m_headp = m_head;
1241
1242		if ((ret = bus_dmamap_load_mbuf_sg(ha->tx_tag, map, m_head,
1243					segs, &nsegs, BUS_DMA_NOWAIT))) {
1244
1245			ha->err_tx_dmamap_load++;
1246
1247			device_printf(ha->pci_dev,
1248				"%s: bus_dmamap_load_mbuf_sg failed0[%d, %d]\n",
1249				__func__, ret, m_head->m_pkthdr.len);
1250
1251			if (ret != ENOMEM) {
1252				m_freem(m_head);
1253				*m_headp = NULL;
1254			}
1255			return (ret);
1256		}
1257
1258	} else if (ret) {
1259
1260		ha->err_tx_dmamap_load++;
1261
1262		device_printf(ha->pci_dev,
1263			"%s: bus_dmamap_load_mbuf_sg failed1[%d, %d]\n",
1264			__func__, ret, m_head->m_pkthdr.len);
1265
1266		if (ret != ENOMEM) {
1267			m_freem(m_head);
1268			*m_headp = NULL;
1269		}
1270		return (ret);
1271	}
1272
1273	QL_ASSERT(ha, (nsegs != 0), ("qla_send: empty packet"));
1274
1275	bus_dmamap_sync(ha->tx_tag, map, BUS_DMASYNC_PREWRITE);
1276
1277        if (!(ret = ql_hw_send(ha, segs, nsegs, tx_idx, m_head, txr_idx,
1278				iscsi_pdu))) {
1279		ha->tx_ring[txr_idx].count++;
1280		ha->tx_ring[txr_idx].tx_buf[tx_idx].m_head = m_head;
1281	} else {
1282		if (ret == EINVAL) {
1283			if (m_head)
1284				m_freem(m_head);
1285			*m_headp = NULL;
1286		}
1287	}
1288
1289	QL_DPRINT8(ha, (ha->pci_dev, "%s: exit\n", __func__));
1290	return (ret);
1291}
1292
1293static void
1294qla_stop(qla_host_t *ha)
1295{
1296	struct ifnet *ifp = ha->ifp;
1297	device_t	dev;
1298
1299	dev = ha->pci_dev;
1300
1301	ifp->if_drv_flags &= ~(IFF_DRV_OACTIVE | IFF_DRV_RUNNING);
1302
1303	ha->flags.qla_watchdog_pause = 1;
1304
1305	while (!ha->qla_watchdog_paused)
1306		qla_mdelay(__func__, 1);
1307
1308	ha->flags.stop_rcv = 1;
1309	ql_hw_stop_rcv(ha);
1310
1311	ql_del_hw_if(ha);
1312
1313	qla_free_xmt_bufs(ha);
1314	qla_free_rcv_bufs(ha);
1315
1316	return;
1317}
1318
1319/*
1320 * Buffer Management Functions for Transmit and Receive Rings
1321 */
1322static int
1323qla_alloc_xmt_bufs(qla_host_t *ha)
1324{
1325	int ret = 0;
1326	uint32_t i, j;
1327	qla_tx_buf_t *txb;
1328
1329	if (bus_dma_tag_create(NULL,    /* parent */
1330		1, 0,    /* alignment, bounds */
1331		BUS_SPACE_MAXADDR,       /* lowaddr */
1332		BUS_SPACE_MAXADDR,       /* highaddr */
1333		NULL, NULL,      /* filter, filterarg */
1334		QLA_MAX_TSO_FRAME_SIZE,     /* maxsize */
1335		QLA_MAX_SEGMENTS,        /* nsegments */
1336		PAGE_SIZE,        /* maxsegsize */
1337		BUS_DMA_ALLOCNOW,        /* flags */
1338		NULL,    /* lockfunc */
1339		NULL,    /* lockfuncarg */
1340		&ha->tx_tag)) {
1341		device_printf(ha->pci_dev, "%s: tx_tag alloc failed\n",
1342			__func__);
1343		return (ENOMEM);
1344	}
1345
1346	for (i = 0; i < ha->hw.num_tx_rings; i++) {
1347		bzero((void *)ha->tx_ring[i].tx_buf,
1348			(sizeof(qla_tx_buf_t) * NUM_TX_DESCRIPTORS));
1349	}
1350
1351	for (j = 0; j < ha->hw.num_tx_rings; j++) {
1352		for (i = 0; i < NUM_TX_DESCRIPTORS; i++) {
1353
1354			txb = &ha->tx_ring[j].tx_buf[i];
1355
1356			if ((ret = bus_dmamap_create(ha->tx_tag,
1357					BUS_DMA_NOWAIT, &txb->map))) {
1358
1359				ha->err_tx_dmamap_create++;
1360				device_printf(ha->pci_dev,
1361					"%s: bus_dmamap_create failed[%d]\n",
1362					__func__, ret);
1363
1364				qla_free_xmt_bufs(ha);
1365
1366				return (ret);
1367			}
1368		}
1369	}
1370
1371	return 0;
1372}
1373
1374/*
1375 * Release mbuf after it sent on the wire
1376 */
1377static void
1378qla_clear_tx_buf(qla_host_t *ha, qla_tx_buf_t *txb)
1379{
1380	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
1381
1382	if (txb->m_head && txb->map) {
1383
1384		bus_dmamap_unload(ha->tx_tag, txb->map);
1385
1386		m_freem(txb->m_head);
1387		txb->m_head = NULL;
1388	}
1389
1390	if (txb->map)
1391		bus_dmamap_destroy(ha->tx_tag, txb->map);
1392
1393	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit\n", __func__));
1394}
1395
1396static void
1397qla_free_xmt_bufs(qla_host_t *ha)
1398{
1399	int		i, j;
1400
1401	for (j = 0; j < ha->hw.num_tx_rings; j++) {
1402		for (i = 0; i < NUM_TX_DESCRIPTORS; i++)
1403			qla_clear_tx_buf(ha, &ha->tx_ring[j].tx_buf[i]);
1404	}
1405
1406	if (ha->tx_tag != NULL) {
1407		bus_dma_tag_destroy(ha->tx_tag);
1408		ha->tx_tag = NULL;
1409	}
1410
1411	for (i = 0; i < ha->hw.num_tx_rings; i++) {
1412		bzero((void *)ha->tx_ring[i].tx_buf,
1413			(sizeof(qla_tx_buf_t) * NUM_TX_DESCRIPTORS));
1414	}
1415	return;
1416}
1417
1418
1419static int
1420qla_alloc_rcv_std(qla_host_t *ha)
1421{
1422	int		i, j, k, r, ret = 0;
1423	qla_rx_buf_t	*rxb;
1424	qla_rx_ring_t	*rx_ring;
1425
1426	for (r = 0; r < ha->hw.num_rds_rings; r++) {
1427
1428		rx_ring = &ha->rx_ring[r];
1429
1430		for (i = 0; i < NUM_RX_DESCRIPTORS; i++) {
1431
1432			rxb = &rx_ring->rx_buf[i];
1433
1434			ret = bus_dmamap_create(ha->rx_tag, BUS_DMA_NOWAIT,
1435					&rxb->map);
1436
1437			if (ret) {
1438				device_printf(ha->pci_dev,
1439					"%s: dmamap[%d, %d] failed\n",
1440					__func__, r, i);
1441
1442				for (k = 0; k < r; k++) {
1443					for (j = 0; j < NUM_RX_DESCRIPTORS;
1444						j++) {
1445						rxb = &ha->rx_ring[k].rx_buf[j];
1446						bus_dmamap_destroy(ha->rx_tag,
1447							rxb->map);
1448					}
1449				}
1450
1451				for (j = 0; j < i; j++) {
1452					bus_dmamap_destroy(ha->rx_tag,
1453						rx_ring->rx_buf[j].map);
1454				}
1455				goto qla_alloc_rcv_std_err;
1456			}
1457		}
1458	}
1459
1460	qla_init_hw_rcv_descriptors(ha);
1461
1462
1463	for (r = 0; r < ha->hw.num_rds_rings; r++) {
1464
1465		rx_ring = &ha->rx_ring[r];
1466
1467		for (i = 0; i < NUM_RX_DESCRIPTORS; i++) {
1468			rxb = &rx_ring->rx_buf[i];
1469			rxb->handle = i;
1470			if (!(ret = ql_get_mbuf(ha, rxb, NULL))) {
1471				/*
1472			 	 * set the physical address in the
1473				 * corresponding descriptor entry in the
1474				 * receive ring/queue for the hba
1475				 */
1476				qla_set_hw_rcv_desc(ha, r, i, rxb->handle,
1477					rxb->paddr,
1478					(rxb->m_head)->m_pkthdr.len);
1479			} else {
1480				device_printf(ha->pci_dev,
1481					"%s: ql_get_mbuf [%d, %d] failed\n",
1482					__func__, r, i);
1483				bus_dmamap_destroy(ha->rx_tag, rxb->map);
1484				goto qla_alloc_rcv_std_err;
1485			}
1486		}
1487	}
1488	return 0;
1489
1490qla_alloc_rcv_std_err:
1491	return (-1);
1492}
1493
1494static void
1495qla_free_rcv_std(qla_host_t *ha)
1496{
1497	int		i, r;
1498	qla_rx_buf_t	*rxb;
1499
1500	for (r = 0; r < ha->hw.num_rds_rings; r++) {
1501		for (i = 0; i < NUM_RX_DESCRIPTORS; i++) {
1502			rxb = &ha->rx_ring[r].rx_buf[i];
1503			if (rxb->m_head != NULL) {
1504				bus_dmamap_unload(ha->rx_tag, rxb->map);
1505				bus_dmamap_destroy(ha->rx_tag, rxb->map);
1506				m_freem(rxb->m_head);
1507				rxb->m_head = NULL;
1508			}
1509		}
1510	}
1511	return;
1512}
1513
1514static int
1515qla_alloc_rcv_bufs(qla_host_t *ha)
1516{
1517	int		i, ret = 0;
1518
1519	if (bus_dma_tag_create(NULL,    /* parent */
1520			1, 0,    /* alignment, bounds */
1521			BUS_SPACE_MAXADDR,       /* lowaddr */
1522			BUS_SPACE_MAXADDR,       /* highaddr */
1523			NULL, NULL,      /* filter, filterarg */
1524			MJUM9BYTES,     /* maxsize */
1525			1,        /* nsegments */
1526			MJUM9BYTES,        /* maxsegsize */
1527			BUS_DMA_ALLOCNOW,        /* flags */
1528			NULL,    /* lockfunc */
1529			NULL,    /* lockfuncarg */
1530			&ha->rx_tag)) {
1531
1532		device_printf(ha->pci_dev, "%s: rx_tag alloc failed\n",
1533			__func__);
1534
1535		return (ENOMEM);
1536	}
1537
1538	bzero((void *)ha->rx_ring, (sizeof(qla_rx_ring_t) * MAX_RDS_RINGS));
1539
1540	for (i = 0; i < ha->hw.num_sds_rings; i++) {
1541		ha->hw.sds[i].sdsr_next = 0;
1542		ha->hw.sds[i].rxb_free = NULL;
1543		ha->hw.sds[i].rx_free = 0;
1544	}
1545
1546	ret = qla_alloc_rcv_std(ha);
1547
1548	return (ret);
1549}
1550
1551static void
1552qla_free_rcv_bufs(qla_host_t *ha)
1553{
1554	int		i;
1555
1556	qla_free_rcv_std(ha);
1557
1558	if (ha->rx_tag != NULL) {
1559		bus_dma_tag_destroy(ha->rx_tag);
1560		ha->rx_tag = NULL;
1561	}
1562
1563	bzero((void *)ha->rx_ring, (sizeof(qla_rx_ring_t) * MAX_RDS_RINGS));
1564
1565	for (i = 0; i < ha->hw.num_sds_rings; i++) {
1566		ha->hw.sds[i].sdsr_next = 0;
1567		ha->hw.sds[i].rxb_free = NULL;
1568		ha->hw.sds[i].rx_free = 0;
1569	}
1570
1571	return;
1572}
1573
1574int
1575ql_get_mbuf(qla_host_t *ha, qla_rx_buf_t *rxb, struct mbuf *nmp)
1576{
1577	register struct mbuf *mp = nmp;
1578	struct ifnet   		*ifp;
1579	int            		ret = 0;
1580	uint32_t		offset;
1581	bus_dma_segment_t	segs[1];
1582	int			nsegs, mbuf_size;
1583
1584	QL_DPRINT2(ha, (ha->pci_dev, "%s: enter\n", __func__));
1585
1586	ifp = ha->ifp;
1587
1588        if (ha->hw.enable_9kb)
1589                mbuf_size = MJUM9BYTES;
1590        else
1591                mbuf_size = MCLBYTES;
1592
1593	if (mp == NULL) {
1594
1595                if (ha->hw.enable_9kb)
1596                        mp = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR, mbuf_size);
1597                else
1598                        mp = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1599
1600		if (mp == NULL) {
1601			ha->err_m_getcl++;
1602			ret = ENOBUFS;
1603			device_printf(ha->pci_dev,
1604					"%s: m_getcl failed\n", __func__);
1605			goto exit_ql_get_mbuf;
1606		}
1607		mp->m_len = mp->m_pkthdr.len = mbuf_size;
1608	} else {
1609		mp->m_len = mp->m_pkthdr.len = mbuf_size;
1610		mp->m_data = mp->m_ext.ext_buf;
1611		mp->m_next = NULL;
1612	}
1613
1614	offset = (uint32_t)((unsigned long long)mp->m_data & 0x7ULL);
1615	if (offset) {
1616		offset = 8 - offset;
1617		m_adj(mp, offset);
1618	}
1619
1620	/*
1621	 * Using memory from the mbuf cluster pool, invoke the bus_dma
1622	 * machinery to arrange the memory mapping.
1623	 */
1624	ret = bus_dmamap_load_mbuf_sg(ha->rx_tag, rxb->map,
1625			mp, segs, &nsegs, BUS_DMA_NOWAIT);
1626	rxb->paddr = segs[0].ds_addr;
1627
1628	if (ret || !rxb->paddr || (nsegs != 1)) {
1629		m_free(mp);
1630		rxb->m_head = NULL;
1631		device_printf(ha->pci_dev,
1632			"%s: bus_dmamap_load failed[%d, 0x%016llx, %d]\n",
1633			__func__, ret, (long long unsigned int)rxb->paddr,
1634			nsegs);
1635                ret = -1;
1636		goto exit_ql_get_mbuf;
1637	}
1638	rxb->m_head = mp;
1639	bus_dmamap_sync(ha->rx_tag, rxb->map, BUS_DMASYNC_PREREAD);
1640
1641exit_ql_get_mbuf:
1642	QL_DPRINT2(ha, (ha->pci_dev, "%s: exit ret = 0x%08x\n", __func__, ret));
1643	return (ret);
1644}
1645
1646static void
1647qla_tx_done(void *context, int pending)
1648{
1649	qla_host_t *ha = context;
1650	struct ifnet   *ifp;
1651
1652	ifp = ha->ifp;
1653
1654	if (!ifp)
1655		return;
1656
1657	if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
1658		QL_DPRINT8(ha, (ha->pci_dev, "%s: !IFF_DRV_RUNNING\n", __func__));
1659		return;
1660	}
1661	ql_hw_tx_done(ha);
1662
1663	qla_start(ha->ifp);
1664}
1665
1666static void
1667qla_get_peer(qla_host_t *ha)
1668{
1669	device_t *peers;
1670	int count, i, slot;
1671	int my_slot = pci_get_slot(ha->pci_dev);
1672
1673	if (device_get_children(device_get_parent(ha->pci_dev), &peers, &count))
1674		return;
1675
1676	for (i = 0; i < count; i++) {
1677		slot = pci_get_slot(peers[i]);
1678
1679		if ((slot >= 0) && (slot == my_slot) &&
1680			(pci_get_device(peers[i]) ==
1681				pci_get_device(ha->pci_dev))) {
1682			if (ha->pci_dev != peers[i])
1683				ha->peer_dev = peers[i];
1684		}
1685	}
1686}
1687
1688static void
1689qla_send_msg_to_peer(qla_host_t *ha, uint32_t msg_to_peer)
1690{
1691	qla_host_t *ha_peer;
1692
1693	if (ha->peer_dev) {
1694        	if ((ha_peer = device_get_softc(ha->peer_dev)) != NULL) {
1695
1696			ha_peer->msg_from_peer = msg_to_peer;
1697		}
1698	}
1699}
1700
1701static void
1702qla_error_recovery(void *context, int pending)
1703{
1704	qla_host_t *ha = context;
1705	uint32_t msecs_100 = 100;
1706	struct ifnet *ifp = ha->ifp;
1707
1708        (void)QLA_LOCK(ha, __func__, 0);
1709
1710	ha->hw.imd_compl = 1;
1711	qla_mdelay(__func__, 300);
1712
1713        ha->flags.stop_rcv = 1;
1714
1715        ql_hw_stop_rcv(ha);
1716
1717        ifp->if_drv_flags &= ~(IFF_DRV_OACTIVE | IFF_DRV_RUNNING);
1718
1719        QLA_UNLOCK(ha, __func__);
1720
1721	if ((ha->pci_func & 0x1) == 0) {
1722
1723		if (!ha->msg_from_peer) {
1724			qla_send_msg_to_peer(ha, QL_PEER_MSG_RESET);
1725
1726			while ((ha->msg_from_peer != QL_PEER_MSG_ACK) &&
1727				msecs_100--)
1728				qla_mdelay(__func__, 100);
1729		}
1730
1731		ha->msg_from_peer = 0;
1732
1733		ql_minidump(ha);
1734
1735		(void) ql_init_hw(ha);
1736        	qla_free_xmt_bufs(ha);
1737	        qla_free_rcv_bufs(ha);
1738
1739		qla_send_msg_to_peer(ha, QL_PEER_MSG_ACK);
1740
1741	} else {
1742		if (ha->msg_from_peer == QL_PEER_MSG_RESET) {
1743
1744			ha->msg_from_peer = 0;
1745
1746			qla_send_msg_to_peer(ha, QL_PEER_MSG_ACK);
1747		} else {
1748			qla_send_msg_to_peer(ha, QL_PEER_MSG_RESET);
1749		}
1750
1751		while ((ha->msg_from_peer != QL_PEER_MSG_ACK)  && msecs_100--)
1752			qla_mdelay(__func__, 100);
1753		ha->msg_from_peer = 0;
1754
1755		(void) ql_init_hw(ha);
1756        	qla_free_xmt_bufs(ha);
1757	        qla_free_rcv_bufs(ha);
1758	}
1759        (void)QLA_LOCK(ha, __func__, 0);
1760
1761	if (qla_alloc_xmt_bufs(ha) != 0) {
1762        	QLA_UNLOCK(ha, __func__);
1763                return;
1764	}
1765	qla_confirm_9kb_enable(ha);
1766
1767        if (qla_alloc_rcv_bufs(ha) != 0) {
1768        	QLA_UNLOCK(ha, __func__);
1769                return;
1770	}
1771
1772        ha->flags.stop_rcv = 0;
1773        if (ql_init_hw_if(ha) == 0) {
1774                ifp = ha->ifp;
1775                ifp->if_drv_flags |= IFF_DRV_RUNNING;
1776                ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1777                ha->flags.qla_watchdog_pause = 0;
1778        }
1779
1780        QLA_UNLOCK(ha, __func__);
1781}
1782
1783static void
1784qla_async_event(void *context, int pending)
1785{
1786        qla_host_t *ha = context;
1787
1788        (void)QLA_LOCK(ha, __func__, 0);
1789        qla_hw_async_event(ha);
1790        QLA_UNLOCK(ha, __func__);
1791}
1792
1793