vnic_dev.c revision 8b25d1ad
1/*
2 * Copyright 2008-2014 Cisco Systems, Inc.  All rights reserved.
3 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
4 *
5 * Copyright (c) 2014, Cisco Systems, Inc.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
28 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 *
33 */
34
35#include <rte_memzone.h>
36#include <rte_memcpy.h>
37#include <rte_string_fns.h>
38
39#include "vnic_dev.h"
40#include "vnic_resource.h"
41#include "vnic_devcmd.h"
42#include "vnic_stats.h"
43
44
45enum vnic_proxy_type {
46	PROXY_NONE,
47	PROXY_BY_BDF,
48	PROXY_BY_INDEX,
49};
50
51struct vnic_res {
52	void __iomem *vaddr;
53	dma_addr_t bus_addr;
54	unsigned int count;
55};
56
57struct vnic_intr_coal_timer_info {
58	u32 mul;
59	u32 div;
60	u32 max_usec;
61};
62
63struct vnic_dev {
64	void *priv;
65	struct rte_pci_device *pdev;
66	struct vnic_res res[RES_TYPE_MAX];
67	enum vnic_dev_intr_mode intr_mode;
68	struct vnic_devcmd __iomem *devcmd;
69	struct vnic_devcmd_notify *notify;
70	struct vnic_devcmd_notify notify_copy;
71	dma_addr_t notify_pa;
72	u32 notify_sz;
73	dma_addr_t linkstatus_pa;
74	struct vnic_stats *stats;
75	dma_addr_t stats_pa;
76	struct vnic_devcmd_fw_info *fw_info;
77	dma_addr_t fw_info_pa;
78	enum vnic_proxy_type proxy;
79	u32 proxy_index;
80	u64 args[VNIC_DEVCMD_NARGS];
81	u16 split_hdr_size;
82	int in_reset;
83	struct vnic_intr_coal_timer_info intr_coal_timer_info;
84	void *(*alloc_consistent)(void *priv, size_t size,
85		dma_addr_t *dma_handle, u8 *name);
86	void (*free_consistent)(void *priv,
87		size_t size, void *vaddr,
88		dma_addr_t dma_handle);
89};
90
91#define VNIC_MAX_RES_HDR_SIZE \
92	(sizeof(struct vnic_resource_header) + \
93	sizeof(struct vnic_resource) * RES_TYPE_MAX)
94#define VNIC_RES_STRIDE	128
95
96void *vnic_dev_priv(struct vnic_dev *vdev)
97{
98	return vdev->priv;
99}
100
101void vnic_register_cbacks(struct vnic_dev *vdev,
102	void *(*alloc_consistent)(void *priv, size_t size,
103	    dma_addr_t *dma_handle, u8 *name),
104	void (*free_consistent)(void *priv,
105	    size_t size, void *vaddr,
106	    dma_addr_t dma_handle))
107{
108	vdev->alloc_consistent = alloc_consistent;
109	vdev->free_consistent = free_consistent;
110}
111
112static int vnic_dev_discover_res(struct vnic_dev *vdev,
113	struct vnic_dev_bar *bar, unsigned int num_bars)
114{
115	struct vnic_resource_header __iomem *rh;
116	struct mgmt_barmap_hdr __iomem *mrh;
117	struct vnic_resource __iomem *r;
118	u8 type;
119
120	if (num_bars == 0)
121		return -EINVAL;
122
123	if (bar->len < VNIC_MAX_RES_HDR_SIZE) {
124		pr_err("vNIC BAR0 res hdr length error\n");
125		return -EINVAL;
126	}
127
128	rh  = bar->vaddr;
129	mrh = bar->vaddr;
130	if (!rh) {
131		pr_err("vNIC BAR0 res hdr not mem-mapped\n");
132		return -EINVAL;
133	}
134
135	/* Check for mgmt vnic in addition to normal vnic */
136	if ((ioread32(&rh->magic) != VNIC_RES_MAGIC) ||
137		(ioread32(&rh->version) != VNIC_RES_VERSION)) {
138		if ((ioread32(&mrh->magic) != MGMTVNIC_MAGIC) ||
139			(ioread32(&mrh->version) != MGMTVNIC_VERSION)) {
140			pr_err("vNIC BAR0 res magic/version error " \
141				"exp (%lx/%lx) or (%lx/%lx), curr (%x/%x)\n",
142				VNIC_RES_MAGIC, VNIC_RES_VERSION,
143				MGMTVNIC_MAGIC, MGMTVNIC_VERSION,
144				ioread32(&rh->magic), ioread32(&rh->version));
145			return -EINVAL;
146		}
147	}
148
149	if (ioread32(&mrh->magic) == MGMTVNIC_MAGIC)
150		r = (struct vnic_resource __iomem *)(mrh + 1);
151	else
152		r = (struct vnic_resource __iomem *)(rh + 1);
153
154
155	while ((type = ioread8(&r->type)) != RES_TYPE_EOL) {
156		u8 bar_num = ioread8(&r->bar);
157		u32 bar_offset = ioread32(&r->bar_offset);
158		u32 count = ioread32(&r->count);
159		u32 len;
160
161		r++;
162
163		if (bar_num >= num_bars)
164			continue;
165
166		if (!bar[bar_num].len || !bar[bar_num].vaddr)
167			continue;
168
169		switch (type) {
170		case RES_TYPE_WQ:
171		case RES_TYPE_RQ:
172		case RES_TYPE_CQ:
173		case RES_TYPE_INTR_CTRL:
174			/* each count is stride bytes long */
175			len = count * VNIC_RES_STRIDE;
176			if (len + bar_offset > bar[bar_num].len) {
177				pr_err("vNIC BAR0 resource %d " \
178					"out-of-bounds, offset 0x%x + " \
179					"size 0x%x > bar len 0x%lx\n",
180					type, bar_offset,
181					len,
182					bar[bar_num].len);
183				return -EINVAL;
184			}
185			break;
186		case RES_TYPE_INTR_PBA_LEGACY:
187		case RES_TYPE_DEVCMD:
188			len = count;
189			break;
190		default:
191			continue;
192		}
193
194		vdev->res[type].count = count;
195		vdev->res[type].vaddr = (char __iomem *)bar[bar_num].vaddr +
196		    bar_offset;
197		vdev->res[type].bus_addr = bar[bar_num].bus_addr + bar_offset;
198	}
199
200	return 0;
201}
202
203unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev,
204	enum vnic_res_type type)
205{
206	return vdev->res[type].count;
207}
208
209void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
210	unsigned int index)
211{
212	if (!vdev->res[type].vaddr)
213		return NULL;
214
215	switch (type) {
216	case RES_TYPE_WQ:
217	case RES_TYPE_RQ:
218	case RES_TYPE_CQ:
219	case RES_TYPE_INTR_CTRL:
220		return (char __iomem *)vdev->res[type].vaddr +
221			index * VNIC_RES_STRIDE;
222	default:
223		return (char __iomem *)vdev->res[type].vaddr;
224	}
225}
226
227unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
228	unsigned int desc_count, unsigned int desc_size)
229{
230	/* The base address of the desc rings must be 512 byte aligned.
231	 * Descriptor count is aligned to groups of 32 descriptors.  A
232	 * count of 0 means the maximum 4096 descriptors.  Descriptor
233	 * size is aligned to 16 bytes.
234	 */
235
236	unsigned int count_align = 32;
237	unsigned int desc_align = 16;
238
239	ring->base_align = 512;
240
241	if (desc_count == 0)
242		desc_count = 4096;
243
244	ring->desc_count = VNIC_ALIGN(desc_count, count_align);
245
246	ring->desc_size = VNIC_ALIGN(desc_size, desc_align);
247
248	ring->size = ring->desc_count * ring->desc_size;
249	ring->size_unaligned = ring->size + ring->base_align;
250
251	return ring->size_unaligned;
252}
253
254void vnic_set_hdr_split_size(struct vnic_dev *vdev, u16 size)
255{
256	vdev->split_hdr_size = size;
257}
258
259u16 vnic_get_hdr_split_size(struct vnic_dev *vdev)
260{
261	return vdev->split_hdr_size;
262}
263
264void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring)
265{
266	memset(ring->descs, 0, ring->size);
267}
268
269int vnic_dev_alloc_desc_ring(__attribute__((unused)) struct vnic_dev *vdev,
270	struct vnic_dev_ring *ring,
271	unsigned int desc_count, unsigned int desc_size, unsigned int socket_id,
272	char *z_name)
273{
274	const struct rte_memzone *rz;
275
276	vnic_dev_desc_ring_size(ring, desc_count, desc_size);
277
278	rz = rte_memzone_reserve_aligned(z_name,
279		ring->size_unaligned, socket_id,
280		0, ENIC_ALIGN);
281	if (!rz) {
282		pr_err("Failed to allocate ring (size=%d), aborting\n",
283			(int)ring->size);
284		return -ENOMEM;
285	}
286
287	ring->descs_unaligned = rz->addr;
288	if (!ring->descs_unaligned) {
289		pr_err("Failed to map allocated ring (size=%d), aborting\n",
290			(int)ring->size);
291		return -ENOMEM;
292	}
293
294	ring->base_addr_unaligned = (dma_addr_t)rz->phys_addr;
295
296	ring->base_addr = VNIC_ALIGN(ring->base_addr_unaligned,
297		ring->base_align);
298	ring->descs = (u8 *)ring->descs_unaligned +
299	    (ring->base_addr - ring->base_addr_unaligned);
300
301	vnic_dev_clear_desc_ring(ring);
302
303	ring->desc_avail = ring->desc_count - 1;
304
305	return 0;
306}
307
308void vnic_dev_free_desc_ring(__attribute__((unused))  struct vnic_dev *vdev,
309	struct vnic_dev_ring *ring)
310{
311	if (ring->descs)
312		ring->descs = NULL;
313}
314
315static int _vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
316	int wait)
317{
318	struct vnic_devcmd __iomem *devcmd = vdev->devcmd;
319	unsigned int i;
320	int delay;
321	u32 status;
322	int err;
323
324	status = ioread32(&devcmd->status);
325	if (status == 0xFFFFFFFF) {
326		/* PCI-e target device is gone */
327		return -ENODEV;
328	}
329	if (status & STAT_BUSY) {
330
331		pr_err("Busy devcmd %d\n",  _CMD_N(cmd));
332		return -EBUSY;
333	}
334
335	if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) {
336		for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
337			writeq(vdev->args[i], &devcmd->args[i]);
338		wmb(); /* complete all writes initiated till now */
339	}
340
341	iowrite32(cmd, &devcmd->cmd);
342
343	if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT))
344		return 0;
345
346	for (delay = 0; delay < wait; delay++) {
347
348		udelay(100);
349
350		status = ioread32(&devcmd->status);
351		if (status == 0xFFFFFFFF) {
352			/* PCI-e target device is gone */
353			return -ENODEV;
354		}
355
356		if (!(status & STAT_BUSY)) {
357			if (status & STAT_ERROR) {
358				err = -(int)readq(&devcmd->args[0]);
359				if (cmd != CMD_CAPABILITY)
360					pr_err("Devcmd %d failed " \
361						"with error code %d\n",
362						_CMD_N(cmd), err);
363				return err;
364			}
365
366			if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
367				rmb();/* finish all reads initiated till now */
368				for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
369					vdev->args[i] = readq(&devcmd->args[i]);
370			}
371
372			return 0;
373		}
374	}
375
376	pr_err("Timedout devcmd %d\n", _CMD_N(cmd));
377	return -ETIMEDOUT;
378}
379
380static int vnic_dev_cmd_proxy(struct vnic_dev *vdev,
381	enum vnic_devcmd_cmd proxy_cmd, enum vnic_devcmd_cmd cmd,
382	u64 *a0, u64 *a1, int wait)
383{
384	u32 status;
385	int err;
386
387	memset(vdev->args, 0, sizeof(vdev->args));
388
389	vdev->args[0] = vdev->proxy_index;
390	vdev->args[1] = cmd;
391	vdev->args[2] = *a0;
392	vdev->args[3] = *a1;
393
394	err = _vnic_dev_cmd(vdev, proxy_cmd, wait);
395	if (err)
396		return err;
397
398	status = (u32)vdev->args[0];
399	if (status & STAT_ERROR) {
400		err = (int)vdev->args[1];
401		if (err != ERR_ECMDUNKNOWN ||
402		    cmd != CMD_CAPABILITY)
403			pr_err("Error %d proxy devcmd %d\n", err, _CMD_N(cmd));
404		return err;
405	}
406
407	*a0 = vdev->args[1];
408	*a1 = vdev->args[2];
409
410	return 0;
411}
412
413static int vnic_dev_cmd_no_proxy(struct vnic_dev *vdev,
414	enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait)
415{
416	int err;
417
418	vdev->args[0] = *a0;
419	vdev->args[1] = *a1;
420
421	err = _vnic_dev_cmd(vdev, cmd, wait);
422
423	*a0 = vdev->args[0];
424	*a1 = vdev->args[1];
425
426	return err;
427}
428
429void vnic_dev_cmd_proxy_by_index_start(struct vnic_dev *vdev, u16 index)
430{
431	vdev->proxy = PROXY_BY_INDEX;
432	vdev->proxy_index = index;
433}
434
435void vnic_dev_cmd_proxy_by_bdf_start(struct vnic_dev *vdev, u16 bdf)
436{
437	vdev->proxy = PROXY_BY_BDF;
438	vdev->proxy_index = bdf;
439}
440
441void vnic_dev_cmd_proxy_end(struct vnic_dev *vdev)
442{
443	vdev->proxy = PROXY_NONE;
444	vdev->proxy_index = 0;
445}
446
447int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
448	u64 *a0, u64 *a1, int wait)
449{
450	memset(vdev->args, 0, sizeof(vdev->args));
451
452	switch (vdev->proxy) {
453	case PROXY_BY_INDEX:
454		return vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_INDEX, cmd,
455				a0, a1, wait);
456	case PROXY_BY_BDF:
457		return vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_BDF, cmd,
458				a0, a1, wait);
459	case PROXY_NONE:
460	default:
461		return vnic_dev_cmd_no_proxy(vdev, cmd, a0, a1, wait);
462	}
463}
464
465static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd)
466{
467	u64 a0 = (u32)cmd, a1 = 0;
468	int wait = 1000;
469	int err;
470
471	err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
472
473	return !(err || a0);
474}
475
476int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, size_t size,
477	void *value)
478{
479	u64 a0, a1;
480	int wait = 1000;
481	int err;
482
483	a0 = offset;
484	a1 = size;
485
486	err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait);
487
488	switch (size) {
489	case 1:
490		*(u8 *)value = (u8)a0;
491		break;
492	case 2:
493		*(u16 *)value = (u16)a0;
494		break;
495	case 4:
496		*(u32 *)value = (u32)a0;
497		break;
498	case 8:
499		*(u64 *)value = a0;
500		break;
501	default:
502		BUG();
503		break;
504	}
505
506	return err;
507}
508
509int vnic_dev_stats_clear(struct vnic_dev *vdev)
510{
511	u64 a0 = 0, a1 = 0;
512	int wait = 1000;
513
514	return vnic_dev_cmd(vdev, CMD_STATS_CLEAR, &a0, &a1, wait);
515}
516
517int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats)
518{
519	u64 a0, a1;
520	int wait = 1000;
521	static u32 instance;
522	char name[NAME_MAX];
523
524	if (!vdev->stats) {
525		snprintf((char *)name, sizeof(name),
526			"vnic_stats-%d", instance++);
527		vdev->stats = vdev->alloc_consistent(vdev->priv,
528			sizeof(struct vnic_stats), &vdev->stats_pa, (u8 *)name);
529		if (!vdev->stats)
530			return -ENOMEM;
531	}
532
533	*stats = vdev->stats;
534	a0 = vdev->stats_pa;
535	a1 = sizeof(struct vnic_stats);
536
537	return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait);
538}
539
540int vnic_dev_close(struct vnic_dev *vdev)
541{
542	u64 a0 = 0, a1 = 0;
543	int wait = 1000;
544
545	return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait);
546}
547
548/** Deprecated.  @see vnic_dev_enable_wait */
549int vnic_dev_enable(struct vnic_dev *vdev)
550{
551	u64 a0 = 0, a1 = 0;
552	int wait = 1000;
553
554	return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
555}
556
557int vnic_dev_enable_wait(struct vnic_dev *vdev)
558{
559	u64 a0 = 0, a1 = 0;
560	int wait = 1000;
561
562	if (vnic_dev_capable(vdev, CMD_ENABLE_WAIT))
563		return vnic_dev_cmd(vdev, CMD_ENABLE_WAIT, &a0, &a1, wait);
564	else
565		return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
566}
567
568int vnic_dev_disable(struct vnic_dev *vdev)
569{
570	u64 a0 = 0, a1 = 0;
571	int wait = 1000;
572
573	return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait);
574}
575
576int vnic_dev_open(struct vnic_dev *vdev, int arg)
577{
578	u64 a0 = (u32)arg, a1 = 0;
579	int wait = 1000;
580
581	return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait);
582}
583
584int vnic_dev_open_done(struct vnic_dev *vdev, int *done)
585{
586	u64 a0 = 0, a1 = 0;
587	int wait = 1000;
588	int err;
589
590	*done = 0;
591
592	err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait);
593	if (err)
594		return err;
595
596	*done = (a0 == 0);
597
598	return 0;
599}
600
601int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg)
602{
603	u64 a0 = (u32)arg, a1 = 0;
604	int wait = 1000;
605
606	return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait);
607}
608
609int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done)
610{
611	u64 a0 = 0, a1 = 0;
612	int wait = 1000;
613	int err;
614
615	*done = 0;
616
617	err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait);
618	if (err)
619		return err;
620
621	*done = (a0 == 0);
622
623	return 0;
624}
625
626int vnic_dev_get_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
627{
628	u64 a0, a1 = 0;
629	int wait = 1000;
630	int err, i;
631
632	for (i = 0; i < ETH_ALEN; i++)
633		mac_addr[i] = 0;
634
635	err = vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
636	if (err)
637		return err;
638
639	for (i = 0; i < ETH_ALEN; i++)
640		mac_addr[i] = ((u8 *)&a0)[i];
641
642	return 0;
643}
644
645int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
646	int broadcast, int promisc, int allmulti)
647{
648	u64 a0, a1 = 0;
649	int wait = 1000;
650	int err;
651
652	a0 = (directed ? CMD_PFILTER_DIRECTED : 0) |
653	     (multicast ? CMD_PFILTER_MULTICAST : 0) |
654	     (broadcast ? CMD_PFILTER_BROADCAST : 0) |
655	     (promisc ? CMD_PFILTER_PROMISCUOUS : 0) |
656	     (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0);
657
658	err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait);
659	if (err)
660		pr_err("Can't set packet filter\n");
661
662	return err;
663}
664
665int vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr)
666{
667	u64 a0 = 0, a1 = 0;
668	int wait = 1000;
669	int err;
670	int i;
671
672	for (i = 0; i < ETH_ALEN; i++)
673		((u8 *)&a0)[i] = addr[i];
674
675	err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
676	if (err)
677		pr_err("Can't add addr [%02x:%02x:%02x:%02x:%02x:%02x], %d\n",
678			addr[0], addr[1], addr[2], addr[3], addr[4], addr[5],
679			err);
680
681	return err;
682}
683
684int vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr)
685{
686	u64 a0 = 0, a1 = 0;
687	int wait = 1000;
688	int err;
689	int i;
690
691	for (i = 0; i < ETH_ALEN; i++)
692		((u8 *)&a0)[i] = addr[i];
693
694	err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait);
695	if (err)
696		pr_err("Can't del addr [%02x:%02x:%02x:%02x:%02x:%02x], %d\n",
697			addr[0], addr[1], addr[2], addr[3], addr[4], addr[5],
698			err);
699
700	return err;
701}
702
703int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev,
704	u8 ig_vlan_rewrite_mode)
705{
706	u64 a0 = ig_vlan_rewrite_mode, a1 = 0;
707	int wait = 1000;
708
709	if (vnic_dev_capable(vdev, CMD_IG_VLAN_REWRITE_MODE))
710		return vnic_dev_cmd(vdev, CMD_IG_VLAN_REWRITE_MODE,
711				&a0, &a1, wait);
712	else
713		return 0;
714}
715
716int vnic_dev_raise_intr(struct vnic_dev *vdev, u16 intr)
717{
718	u64 a0 = intr, a1 = 0;
719	int wait = 1000;
720	int err;
721
722	err = vnic_dev_cmd(vdev, CMD_IAR, &a0, &a1, wait);
723	if (err)
724		pr_err("Failed to raise INTR[%d], err %d\n", intr, err);
725
726	return err;
727}
728
729void vnic_dev_set_reset_flag(struct vnic_dev *vdev, int state)
730{
731	vdev->in_reset = state;
732}
733
734static inline int vnic_dev_in_reset(struct vnic_dev *vdev)
735{
736	return vdev->in_reset;
737}
738
739int vnic_dev_notify_setcmd(struct vnic_dev *vdev,
740	void *notify_addr, dma_addr_t notify_pa, u16 intr)
741{
742	u64 a0, a1;
743	int wait = 1000;
744	int r;
745
746	memset(notify_addr, 0, sizeof(struct vnic_devcmd_notify));
747	if (!vnic_dev_in_reset(vdev)) {
748		vdev->notify = notify_addr;
749		vdev->notify_pa = notify_pa;
750	}
751
752	a0 = (u64)notify_pa;
753	a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
754	a1 += sizeof(struct vnic_devcmd_notify);
755
756	r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
757	if (!vnic_dev_in_reset(vdev))
758		vdev->notify_sz = (r == 0) ? (u32)a1 : 0;
759
760	return r;
761}
762
763int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
764{
765	void *notify_addr = NULL;
766	dma_addr_t notify_pa = 0;
767	char name[NAME_MAX];
768	static u32 instance;
769
770	if (vdev->notify || vdev->notify_pa) {
771		return vnic_dev_notify_setcmd(vdev, vdev->notify,
772					      vdev->notify_pa, intr);
773	}
774	if (!vnic_dev_in_reset(vdev)) {
775		snprintf((char *)name, sizeof(name),
776			"vnic_notify-%d", instance++);
777		notify_addr = vdev->alloc_consistent(vdev->priv,
778			sizeof(struct vnic_devcmd_notify),
779			&notify_pa, (u8 *)name);
780		if (!notify_addr)
781			return -ENOMEM;
782	}
783
784	return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr);
785}
786
787int vnic_dev_notify_unsetcmd(struct vnic_dev *vdev)
788{
789	u64 a0, a1;
790	int wait = 1000;
791	int err;
792
793	a0 = 0;  /* paddr = 0 to unset notify buffer */
794	a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */
795	a1 += sizeof(struct vnic_devcmd_notify);
796
797	err = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
798	if (!vnic_dev_in_reset(vdev)) {
799		vdev->notify = NULL;
800		vdev->notify_pa = 0;
801		vdev->notify_sz = 0;
802	}
803
804	return err;
805}
806
807int vnic_dev_notify_unset(struct vnic_dev *vdev)
808{
809	if (vdev->notify && !vnic_dev_in_reset(vdev)) {
810		vdev->free_consistent(vdev->priv,
811			sizeof(struct vnic_devcmd_notify),
812			vdev->notify,
813			vdev->notify_pa);
814	}
815
816	return vnic_dev_notify_unsetcmd(vdev);
817}
818
819static int vnic_dev_notify_ready(struct vnic_dev *vdev)
820{
821	u32 *words;
822	unsigned int nwords = vdev->notify_sz / 4;
823	unsigned int i;
824	u32 csum;
825
826	if (!vdev->notify || !vdev->notify_sz)
827		return 0;
828
829	do {
830		csum = 0;
831		rte_memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz);
832		words = (u32 *)&vdev->notify_copy;
833		for (i = 1; i < nwords; i++)
834			csum += words[i];
835	} while (csum != words[0]);
836
837	return 1;
838}
839
840int vnic_dev_init(struct vnic_dev *vdev, int arg)
841{
842	u64 a0 = (u32)arg, a1 = 0;
843	int wait = 1000;
844	int r = 0;
845
846	if (vnic_dev_capable(vdev, CMD_INIT))
847		r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
848	else {
849		vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait);
850		if (a0 & CMD_INITF_DEFAULT_MAC) {
851			/* Emulate these for old CMD_INIT_v1 which
852			 * didn't pass a0 so no CMD_INITF_*.
853			 */
854			vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
855			vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
856		}
857	}
858	return r;
859}
860
861int vnic_dev_deinit(struct vnic_dev *vdev)
862{
863	u64 a0 = 0, a1 = 0;
864	int wait = 1000;
865
866	return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait);
867}
868
869void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev)
870{
871	/* Default: hardware intr coal timer is in units of 1.5 usecs */
872	vdev->intr_coal_timer_info.mul = 2;
873	vdev->intr_coal_timer_info.div = 3;
874	vdev->intr_coal_timer_info.max_usec =
875		vnic_dev_intr_coal_timer_hw_to_usec(vdev, 0xffff);
876}
877
878int vnic_dev_link_status(struct vnic_dev *vdev)
879{
880	if (!vnic_dev_notify_ready(vdev))
881		return 0;
882
883	return vdev->notify_copy.link_state;
884}
885
886u32 vnic_dev_port_speed(struct vnic_dev *vdev)
887{
888	if (!vnic_dev_notify_ready(vdev))
889		return 0;
890
891	return vdev->notify_copy.port_speed;
892}
893
894void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
895	enum vnic_dev_intr_mode intr_mode)
896{
897	vdev->intr_mode = intr_mode;
898}
899
900enum vnic_dev_intr_mode vnic_dev_get_intr_mode(
901	struct vnic_dev *vdev)
902{
903	return vdev->intr_mode;
904}
905
906u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec)
907{
908	return (usec * vdev->intr_coal_timer_info.mul) /
909		vdev->intr_coal_timer_info.div;
910}
911
912u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles)
913{
914	return (hw_cycles * vdev->intr_coal_timer_info.div) /
915		vdev->intr_coal_timer_info.mul;
916}
917
918u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev)
919{
920	return vdev->intr_coal_timer_info.max_usec;
921}
922
923void vnic_dev_unregister(struct vnic_dev *vdev)
924{
925	if (vdev) {
926		if (vdev->notify)
927			vdev->free_consistent(vdev->priv,
928				sizeof(struct vnic_devcmd_notify),
929				vdev->notify,
930				vdev->notify_pa);
931		if (vdev->stats)
932			vdev->free_consistent(vdev->priv,
933				sizeof(struct vnic_stats),
934				vdev->stats, vdev->stats_pa);
935		if (vdev->fw_info)
936			vdev->free_consistent(vdev->priv,
937				sizeof(struct vnic_devcmd_fw_info),
938				vdev->fw_info, vdev->fw_info_pa);
939		kfree(vdev);
940	}
941}
942
943struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
944	void *priv, struct rte_pci_device *pdev, struct vnic_dev_bar *bar,
945	unsigned int num_bars)
946{
947	if (!vdev) {
948		vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC);
949		if (!vdev)
950			return NULL;
951	}
952
953	vdev->priv = priv;
954	vdev->pdev = pdev;
955
956	if (vnic_dev_discover_res(vdev, bar, num_bars))
957		goto err_out;
958
959	vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0);
960	if (!vdev->devcmd)
961		goto err_out;
962
963	return vdev;
964
965err_out:
966	vnic_dev_unregister(vdev);
967	return NULL;
968}
969
970struct rte_pci_device *vnic_dev_get_pdev(struct vnic_dev *vdev)
971{
972	return vdev->pdev;
973}
974
975int vnic_dev_set_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
976{
977	u64 a0, a1 = 0;
978	int wait = 1000;
979	int i;
980
981	for (i = 0; i < ETH_ALEN; i++)
982		((u8 *)&a0)[i] = mac_addr[i];
983
984	return vnic_dev_cmd(vdev, CMD_SET_MAC_ADDR, &a0, &a1, wait);
985}
986
987/*
988 *  vnic_dev_classifier: Add/Delete classifier entries
989 *  @vdev: vdev of the device
990 *  @cmd: CLSF_ADD for Add filter
991 *        CLSF_DEL for Delete filter
992 *  @entry: In case of ADD filter, the caller passes the RQ number in this
993 *          variable.
994 *          This function stores the filter_id returned by the
995 *          firmware in the same variable before return;
996 *
997 *          In case of DEL filter, the caller passes the RQ number. Return
998 *          value is irrelevant.
999 * @data: filter data
1000 */
1001int vnic_dev_classifier(struct vnic_dev *vdev, u8 cmd, u16 *entry,
1002	struct filter *data)
1003{
1004	u64 a0, a1;
1005	int wait = 1000;
1006	dma_addr_t tlv_pa;
1007	int ret = -EINVAL;
1008	struct filter_tlv *tlv, *tlv_va;
1009	struct filter_action *action;
1010	u64 tlv_size;
1011	static unsigned int unique_id;
1012	char z_name[RTE_MEMZONE_NAMESIZE];
1013
1014	if (cmd == CLSF_ADD) {
1015		tlv_size = sizeof(struct filter) +
1016		    sizeof(struct filter_action) +
1017		    2*sizeof(struct filter_tlv);
1018		snprintf((char *)z_name, sizeof(z_name),
1019			"vnic_clsf_%d", unique_id++);
1020		tlv_va = vdev->alloc_consistent(vdev->priv,
1021			tlv_size, &tlv_pa, (u8 *)z_name);
1022		if (!tlv_va)
1023			return -ENOMEM;
1024		tlv = tlv_va;
1025		a0 = tlv_pa;
1026		a1 = tlv_size;
1027		memset(tlv, 0, tlv_size);
1028		tlv->type = CLSF_TLV_FILTER;
1029		tlv->length = sizeof(struct filter);
1030		*(struct filter *)&tlv->val = *data;
1031
1032		tlv = (struct filter_tlv *)((char *)tlv +
1033					 sizeof(struct filter_tlv) +
1034					 sizeof(struct filter));
1035
1036		tlv->type = CLSF_TLV_ACTION;
1037		tlv->length = sizeof(struct filter_action);
1038		action = (struct filter_action *)&tlv->val;
1039		action->type = FILTER_ACTION_RQ_STEERING;
1040		action->u.rq_idx = *entry;
1041
1042		ret = vnic_dev_cmd(vdev, CMD_ADD_FILTER, &a0, &a1, wait);
1043		*entry = (u16)a0;
1044		vdev->free_consistent(vdev->priv, tlv_size, tlv_va, tlv_pa);
1045	} else if (cmd == CLSF_DEL) {
1046		a0 = *entry;
1047		ret = vnic_dev_cmd(vdev, CMD_DEL_FILTER, &a0, &a1, wait);
1048	}
1049
1050	return ret;
1051}
1052