vnic_dev.c revision 32e04ea0
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(struct vnic_dev *vdev,
270	struct vnic_dev_ring *ring,
271	unsigned int desc_count, unsigned int desc_size,
272	__attribute__((unused)) unsigned int socket_id,
273	char *z_name)
274{
275	void *alloc_addr = NULL;
276	dma_addr_t alloc_pa = 0;
277
278	vnic_dev_desc_ring_size(ring, desc_count, desc_size);
279	alloc_addr = vdev->alloc_consistent(vdev->priv,
280					    ring->size_unaligned,
281					    &alloc_pa, (u8 *)z_name);
282	if (!alloc_addr) {
283		pr_err("Failed to allocate ring (size=%d), aborting\n",
284			(int)ring->size);
285		return -ENOMEM;
286	}
287	ring->descs_unaligned = alloc_addr;
288	if (!alloc_pa) {
289		pr_err("Failed to map allocated ring (size=%d), aborting\n",
290			(int)ring->size);
291		vdev->free_consistent(vdev->priv,
292				      ring->size_unaligned,
293				      alloc_addr,
294				      alloc_pa);
295		return -ENOMEM;
296	}
297	ring->base_addr_unaligned = alloc_pa;
298
299	ring->base_addr = VNIC_ALIGN(ring->base_addr_unaligned,
300		ring->base_align);
301	ring->descs = (u8 *)ring->descs_unaligned +
302	    (ring->base_addr - ring->base_addr_unaligned);
303
304	vnic_dev_clear_desc_ring(ring);
305
306	ring->desc_avail = ring->desc_count - 1;
307
308	return 0;
309}
310
311void vnic_dev_free_desc_ring(__attribute__((unused))  struct vnic_dev *vdev,
312	struct vnic_dev_ring *ring)
313{
314	if (ring->descs) {
315		vdev->free_consistent(vdev->priv,
316				      ring->size_unaligned,
317				      ring->descs_unaligned,
318				      ring->base_addr_unaligned);
319		ring->descs = NULL;
320	}
321}
322
323static int _vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
324	int wait)
325{
326	struct vnic_devcmd __iomem *devcmd = vdev->devcmd;
327	unsigned int i;
328	int delay;
329	u32 status;
330	int err;
331
332	status = ioread32(&devcmd->status);
333	if (status == 0xFFFFFFFF) {
334		/* PCI-e target device is gone */
335		return -ENODEV;
336	}
337	if (status & STAT_BUSY) {
338
339		pr_err("Busy devcmd %d\n",  _CMD_N(cmd));
340		return -EBUSY;
341	}
342
343	if (_CMD_DIR(cmd) & _CMD_DIR_WRITE) {
344		for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
345			writeq(vdev->args[i], &devcmd->args[i]);
346		wmb(); /* complete all writes initiated till now */
347	}
348
349	iowrite32(cmd, &devcmd->cmd);
350
351	if ((_CMD_FLAGS(cmd) & _CMD_FLAGS_NOWAIT))
352		return 0;
353
354	for (delay = 0; delay < wait; delay++) {
355
356		udelay(100);
357
358		status = ioread32(&devcmd->status);
359		if (status == 0xFFFFFFFF) {
360			/* PCI-e target device is gone */
361			return -ENODEV;
362		}
363
364		if (!(status & STAT_BUSY)) {
365			if (status & STAT_ERROR) {
366				err = -(int)readq(&devcmd->args[0]);
367				if (cmd != CMD_CAPABILITY)
368					pr_err("Devcmd %d failed " \
369						"with error code %d\n",
370						_CMD_N(cmd), err);
371				return err;
372			}
373
374			if (_CMD_DIR(cmd) & _CMD_DIR_READ) {
375				rmb();/* finish all reads initiated till now */
376				for (i = 0; i < VNIC_DEVCMD_NARGS; i++)
377					vdev->args[i] = readq(&devcmd->args[i]);
378			}
379
380			return 0;
381		}
382	}
383
384	pr_err("Timedout devcmd %d\n", _CMD_N(cmd));
385	return -ETIMEDOUT;
386}
387
388static int vnic_dev_cmd_proxy(struct vnic_dev *vdev,
389	enum vnic_devcmd_cmd proxy_cmd, enum vnic_devcmd_cmd cmd,
390	u64 *a0, u64 *a1, int wait)
391{
392	u32 status;
393	int err;
394
395	memset(vdev->args, 0, sizeof(vdev->args));
396
397	vdev->args[0] = vdev->proxy_index;
398	vdev->args[1] = cmd;
399	vdev->args[2] = *a0;
400	vdev->args[3] = *a1;
401
402	err = _vnic_dev_cmd(vdev, proxy_cmd, wait);
403	if (err)
404		return err;
405
406	status = (u32)vdev->args[0];
407	if (status & STAT_ERROR) {
408		err = (int)vdev->args[1];
409		if (err != ERR_ECMDUNKNOWN ||
410		    cmd != CMD_CAPABILITY)
411			pr_err("Error %d proxy devcmd %d\n", err, _CMD_N(cmd));
412		return err;
413	}
414
415	*a0 = vdev->args[1];
416	*a1 = vdev->args[2];
417
418	return 0;
419}
420
421static int vnic_dev_cmd_no_proxy(struct vnic_dev *vdev,
422	enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait)
423{
424	int err;
425
426	vdev->args[0] = *a0;
427	vdev->args[1] = *a1;
428
429	err = _vnic_dev_cmd(vdev, cmd, wait);
430
431	*a0 = vdev->args[0];
432	*a1 = vdev->args[1];
433
434	return err;
435}
436
437void vnic_dev_cmd_proxy_by_index_start(struct vnic_dev *vdev, u16 index)
438{
439	vdev->proxy = PROXY_BY_INDEX;
440	vdev->proxy_index = index;
441}
442
443void vnic_dev_cmd_proxy_by_bdf_start(struct vnic_dev *vdev, u16 bdf)
444{
445	vdev->proxy = PROXY_BY_BDF;
446	vdev->proxy_index = bdf;
447}
448
449void vnic_dev_cmd_proxy_end(struct vnic_dev *vdev)
450{
451	vdev->proxy = PROXY_NONE;
452	vdev->proxy_index = 0;
453}
454
455int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
456	u64 *a0, u64 *a1, int wait)
457{
458	memset(vdev->args, 0, sizeof(vdev->args));
459
460	switch (vdev->proxy) {
461	case PROXY_BY_INDEX:
462		return vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_INDEX, cmd,
463				a0, a1, wait);
464	case PROXY_BY_BDF:
465		return vnic_dev_cmd_proxy(vdev, CMD_PROXY_BY_BDF, cmd,
466				a0, a1, wait);
467	case PROXY_NONE:
468	default:
469		return vnic_dev_cmd_no_proxy(vdev, cmd, a0, a1, wait);
470	}
471}
472
473static int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd)
474{
475	u64 a0 = (u32)cmd, a1 = 0;
476	int wait = 1000;
477	int err;
478
479	err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait);
480
481	return !(err || a0);
482}
483
484int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, size_t size,
485	void *value)
486{
487	u64 a0, a1;
488	int wait = 1000;
489	int err;
490
491	a0 = offset;
492	a1 = size;
493
494	err = vnic_dev_cmd(vdev, CMD_DEV_SPEC, &a0, &a1, wait);
495
496	switch (size) {
497	case 1:
498		*(u8 *)value = (u8)a0;
499		break;
500	case 2:
501		*(u16 *)value = (u16)a0;
502		break;
503	case 4:
504		*(u32 *)value = (u32)a0;
505		break;
506	case 8:
507		*(u64 *)value = a0;
508		break;
509	default:
510		BUG();
511		break;
512	}
513
514	return err;
515}
516
517int vnic_dev_stats_clear(struct vnic_dev *vdev)
518{
519	u64 a0 = 0, a1 = 0;
520	int wait = 1000;
521
522	return vnic_dev_cmd(vdev, CMD_STATS_CLEAR, &a0, &a1, wait);
523}
524
525int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats)
526{
527	u64 a0, a1;
528	int wait = 1000;
529	static u32 instance;
530	char name[NAME_MAX];
531
532	if (!vdev->stats) {
533		snprintf((char *)name, sizeof(name),
534			"vnic_stats-%d", instance++);
535		vdev->stats = vdev->alloc_consistent(vdev->priv,
536			sizeof(struct vnic_stats), &vdev->stats_pa, (u8 *)name);
537		if (!vdev->stats)
538			return -ENOMEM;
539	}
540
541	*stats = vdev->stats;
542	a0 = vdev->stats_pa;
543	a1 = sizeof(struct vnic_stats);
544
545	return vnic_dev_cmd(vdev, CMD_STATS_DUMP, &a0, &a1, wait);
546}
547
548int vnic_dev_close(struct vnic_dev *vdev)
549{
550	u64 a0 = 0, a1 = 0;
551	int wait = 1000;
552
553	return vnic_dev_cmd(vdev, CMD_CLOSE, &a0, &a1, wait);
554}
555
556/** Deprecated.  @see vnic_dev_enable_wait */
557int vnic_dev_enable(struct vnic_dev *vdev)
558{
559	u64 a0 = 0, a1 = 0;
560	int wait = 1000;
561
562	return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
563}
564
565int vnic_dev_enable_wait(struct vnic_dev *vdev)
566{
567	u64 a0 = 0, a1 = 0;
568	int wait = 1000;
569
570	if (vnic_dev_capable(vdev, CMD_ENABLE_WAIT))
571		return vnic_dev_cmd(vdev, CMD_ENABLE_WAIT, &a0, &a1, wait);
572	else
573		return vnic_dev_cmd(vdev, CMD_ENABLE, &a0, &a1, wait);
574}
575
576int vnic_dev_disable(struct vnic_dev *vdev)
577{
578	u64 a0 = 0, a1 = 0;
579	int wait = 1000;
580
581	return vnic_dev_cmd(vdev, CMD_DISABLE, &a0, &a1, wait);
582}
583
584int vnic_dev_open(struct vnic_dev *vdev, int arg)
585{
586	u64 a0 = (u32)arg, a1 = 0;
587	int wait = 1000;
588
589	return vnic_dev_cmd(vdev, CMD_OPEN, &a0, &a1, wait);
590}
591
592int vnic_dev_open_done(struct vnic_dev *vdev, int *done)
593{
594	u64 a0 = 0, a1 = 0;
595	int wait = 1000;
596	int err;
597
598	*done = 0;
599
600	err = vnic_dev_cmd(vdev, CMD_OPEN_STATUS, &a0, &a1, wait);
601	if (err)
602		return err;
603
604	*done = (a0 == 0);
605
606	return 0;
607}
608
609int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg)
610{
611	u64 a0 = (u32)arg, a1 = 0;
612	int wait = 1000;
613
614	return vnic_dev_cmd(vdev, CMD_SOFT_RESET, &a0, &a1, wait);
615}
616
617int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done)
618{
619	u64 a0 = 0, a1 = 0;
620	int wait = 1000;
621	int err;
622
623	*done = 0;
624
625	err = vnic_dev_cmd(vdev, CMD_SOFT_RESET_STATUS, &a0, &a1, wait);
626	if (err)
627		return err;
628
629	*done = (a0 == 0);
630
631	return 0;
632}
633
634int vnic_dev_get_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
635{
636	u64 a0, a1 = 0;
637	int wait = 1000;
638	int err, i;
639
640	for (i = 0; i < ETH_ALEN; i++)
641		mac_addr[i] = 0;
642
643	err = vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
644	if (err)
645		return err;
646
647	for (i = 0; i < ETH_ALEN; i++)
648		mac_addr[i] = ((u8 *)&a0)[i];
649
650	return 0;
651}
652
653int vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
654	int broadcast, int promisc, int allmulti)
655{
656	u64 a0, a1 = 0;
657	int wait = 1000;
658	int err;
659
660	a0 = (directed ? CMD_PFILTER_DIRECTED : 0) |
661	     (multicast ? CMD_PFILTER_MULTICAST : 0) |
662	     (broadcast ? CMD_PFILTER_BROADCAST : 0) |
663	     (promisc ? CMD_PFILTER_PROMISCUOUS : 0) |
664	     (allmulti ? CMD_PFILTER_ALL_MULTICAST : 0);
665
666	err = vnic_dev_cmd(vdev, CMD_PACKET_FILTER, &a0, &a1, wait);
667	if (err)
668		pr_err("Can't set packet filter\n");
669
670	return err;
671}
672
673int vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr)
674{
675	u64 a0 = 0, a1 = 0;
676	int wait = 1000;
677	int err;
678	int i;
679
680	for (i = 0; i < ETH_ALEN; i++)
681		((u8 *)&a0)[i] = addr[i];
682
683	err = vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
684	if (err)
685		pr_err("Can't add addr [%02x:%02x:%02x:%02x:%02x:%02x], %d\n",
686			addr[0], addr[1], addr[2], addr[3], addr[4], addr[5],
687			err);
688
689	return err;
690}
691
692int vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr)
693{
694	u64 a0 = 0, a1 = 0;
695	int wait = 1000;
696	int err;
697	int i;
698
699	for (i = 0; i < ETH_ALEN; i++)
700		((u8 *)&a0)[i] = addr[i];
701
702	err = vnic_dev_cmd(vdev, CMD_ADDR_DEL, &a0, &a1, wait);
703	if (err)
704		pr_err("Can't del addr [%02x:%02x:%02x:%02x:%02x:%02x], %d\n",
705			addr[0], addr[1], addr[2], addr[3], addr[4], addr[5],
706			err);
707
708	return err;
709}
710
711int vnic_dev_set_ig_vlan_rewrite_mode(struct vnic_dev *vdev,
712	u8 ig_vlan_rewrite_mode)
713{
714	u64 a0 = ig_vlan_rewrite_mode, a1 = 0;
715	int wait = 1000;
716
717	if (vnic_dev_capable(vdev, CMD_IG_VLAN_REWRITE_MODE))
718		return vnic_dev_cmd(vdev, CMD_IG_VLAN_REWRITE_MODE,
719				&a0, &a1, wait);
720	else
721		return 0;
722}
723
724int vnic_dev_raise_intr(struct vnic_dev *vdev, u16 intr)
725{
726	u64 a0 = intr, a1 = 0;
727	int wait = 1000;
728	int err;
729
730	err = vnic_dev_cmd(vdev, CMD_IAR, &a0, &a1, wait);
731	if (err)
732		pr_err("Failed to raise INTR[%d], err %d\n", intr, err);
733
734	return err;
735}
736
737void vnic_dev_set_reset_flag(struct vnic_dev *vdev, int state)
738{
739	vdev->in_reset = state;
740}
741
742static inline int vnic_dev_in_reset(struct vnic_dev *vdev)
743{
744	return vdev->in_reset;
745}
746
747int vnic_dev_notify_setcmd(struct vnic_dev *vdev,
748	void *notify_addr, dma_addr_t notify_pa, u16 intr)
749{
750	u64 a0, a1;
751	int wait = 1000;
752	int r;
753
754	memset(notify_addr, 0, sizeof(struct vnic_devcmd_notify));
755	if (!vnic_dev_in_reset(vdev)) {
756		vdev->notify = notify_addr;
757		vdev->notify_pa = notify_pa;
758	}
759
760	a0 = (u64)notify_pa;
761	a1 = ((u64)intr << 32) & 0x0000ffff00000000ULL;
762	a1 += sizeof(struct vnic_devcmd_notify);
763
764	r = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
765	if (!vnic_dev_in_reset(vdev))
766		vdev->notify_sz = (r == 0) ? (u32)a1 : 0;
767
768	return r;
769}
770
771int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr)
772{
773	void *notify_addr = NULL;
774	dma_addr_t notify_pa = 0;
775	char name[NAME_MAX];
776	static u32 instance;
777
778	if (vdev->notify || vdev->notify_pa) {
779		return vnic_dev_notify_setcmd(vdev, vdev->notify,
780					      vdev->notify_pa, intr);
781	}
782	if (!vnic_dev_in_reset(vdev)) {
783		snprintf((char *)name, sizeof(name),
784			"vnic_notify-%d", instance++);
785		notify_addr = vdev->alloc_consistent(vdev->priv,
786			sizeof(struct vnic_devcmd_notify),
787			&notify_pa, (u8 *)name);
788		if (!notify_addr)
789			return -ENOMEM;
790	}
791
792	return vnic_dev_notify_setcmd(vdev, notify_addr, notify_pa, intr);
793}
794
795int vnic_dev_notify_unsetcmd(struct vnic_dev *vdev)
796{
797	u64 a0, a1;
798	int wait = 1000;
799	int err;
800
801	a0 = 0;  /* paddr = 0 to unset notify buffer */
802	a1 = 0x0000ffff00000000ULL; /* intr num = -1 to unreg for intr */
803	a1 += sizeof(struct vnic_devcmd_notify);
804
805	err = vnic_dev_cmd(vdev, CMD_NOTIFY, &a0, &a1, wait);
806	if (!vnic_dev_in_reset(vdev)) {
807		vdev->notify = NULL;
808		vdev->notify_pa = 0;
809		vdev->notify_sz = 0;
810	}
811
812	return err;
813}
814
815int vnic_dev_notify_unset(struct vnic_dev *vdev)
816{
817	if (vdev->notify && !vnic_dev_in_reset(vdev)) {
818		vdev->free_consistent(vdev->priv,
819			sizeof(struct vnic_devcmd_notify),
820			vdev->notify,
821			vdev->notify_pa);
822	}
823
824	return vnic_dev_notify_unsetcmd(vdev);
825}
826
827static int vnic_dev_notify_ready(struct vnic_dev *vdev)
828{
829	u32 *words;
830	unsigned int nwords = vdev->notify_sz / 4;
831	unsigned int i;
832	u32 csum;
833
834	if (!vdev->notify || !vdev->notify_sz)
835		return 0;
836
837	do {
838		csum = 0;
839		rte_memcpy(&vdev->notify_copy, vdev->notify, vdev->notify_sz);
840		words = (u32 *)&vdev->notify_copy;
841		for (i = 1; i < nwords; i++)
842			csum += words[i];
843	} while (csum != words[0]);
844
845	return 1;
846}
847
848int vnic_dev_init(struct vnic_dev *vdev, int arg)
849{
850	u64 a0 = (u32)arg, a1 = 0;
851	int wait = 1000;
852	int r = 0;
853
854	if (vnic_dev_capable(vdev, CMD_INIT))
855		r = vnic_dev_cmd(vdev, CMD_INIT, &a0, &a1, wait);
856	else {
857		vnic_dev_cmd(vdev, CMD_INIT_v1, &a0, &a1, wait);
858		if (a0 & CMD_INITF_DEFAULT_MAC) {
859			/* Emulate these for old CMD_INIT_v1 which
860			 * didn't pass a0 so no CMD_INITF_*.
861			 */
862			vnic_dev_cmd(vdev, CMD_GET_MAC_ADDR, &a0, &a1, wait);
863			vnic_dev_cmd(vdev, CMD_ADDR_ADD, &a0, &a1, wait);
864		}
865	}
866	return r;
867}
868
869int vnic_dev_deinit(struct vnic_dev *vdev)
870{
871	u64 a0 = 0, a1 = 0;
872	int wait = 1000;
873
874	return vnic_dev_cmd(vdev, CMD_DEINIT, &a0, &a1, wait);
875}
876
877void vnic_dev_intr_coal_timer_info_default(struct vnic_dev *vdev)
878{
879	/* Default: hardware intr coal timer is in units of 1.5 usecs */
880	vdev->intr_coal_timer_info.mul = 2;
881	vdev->intr_coal_timer_info.div = 3;
882	vdev->intr_coal_timer_info.max_usec =
883		vnic_dev_intr_coal_timer_hw_to_usec(vdev, 0xffff);
884}
885
886int vnic_dev_link_status(struct vnic_dev *vdev)
887{
888	if (!vnic_dev_notify_ready(vdev))
889		return 0;
890
891	return vdev->notify_copy.link_state;
892}
893
894u32 vnic_dev_port_speed(struct vnic_dev *vdev)
895{
896	if (!vnic_dev_notify_ready(vdev))
897		return 0;
898
899	return vdev->notify_copy.port_speed;
900}
901
902void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
903	enum vnic_dev_intr_mode intr_mode)
904{
905	vdev->intr_mode = intr_mode;
906}
907
908enum vnic_dev_intr_mode vnic_dev_get_intr_mode(
909	struct vnic_dev *vdev)
910{
911	return vdev->intr_mode;
912}
913
914u32 vnic_dev_intr_coal_timer_usec_to_hw(struct vnic_dev *vdev, u32 usec)
915{
916	return (usec * vdev->intr_coal_timer_info.mul) /
917		vdev->intr_coal_timer_info.div;
918}
919
920u32 vnic_dev_intr_coal_timer_hw_to_usec(struct vnic_dev *vdev, u32 hw_cycles)
921{
922	return (hw_cycles * vdev->intr_coal_timer_info.div) /
923		vdev->intr_coal_timer_info.mul;
924}
925
926u32 vnic_dev_get_intr_coal_timer_max(struct vnic_dev *vdev)
927{
928	return vdev->intr_coal_timer_info.max_usec;
929}
930
931void vnic_dev_unregister(struct vnic_dev *vdev)
932{
933	if (vdev) {
934		if (vdev->notify)
935			vdev->free_consistent(vdev->priv,
936				sizeof(struct vnic_devcmd_notify),
937				vdev->notify,
938				vdev->notify_pa);
939		if (vdev->stats)
940			vdev->free_consistent(vdev->priv,
941				sizeof(struct vnic_stats),
942				vdev->stats, vdev->stats_pa);
943		if (vdev->fw_info)
944			vdev->free_consistent(vdev->priv,
945				sizeof(struct vnic_devcmd_fw_info),
946				vdev->fw_info, vdev->fw_info_pa);
947		kfree(vdev);
948	}
949}
950
951struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
952	void *priv, struct rte_pci_device *pdev, struct vnic_dev_bar *bar,
953	unsigned int num_bars)
954{
955	if (!vdev) {
956		vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC);
957		if (!vdev)
958			return NULL;
959	}
960
961	vdev->priv = priv;
962	vdev->pdev = pdev;
963
964	if (vnic_dev_discover_res(vdev, bar, num_bars))
965		goto err_out;
966
967	vdev->devcmd = vnic_dev_get_res(vdev, RES_TYPE_DEVCMD, 0);
968	if (!vdev->devcmd)
969		goto err_out;
970
971	return vdev;
972
973err_out:
974	vnic_dev_unregister(vdev);
975	return NULL;
976}
977
978struct rte_pci_device *vnic_dev_get_pdev(struct vnic_dev *vdev)
979{
980	return vdev->pdev;
981}
982
983int vnic_dev_set_mac_addr(struct vnic_dev *vdev, u8 *mac_addr)
984{
985	u64 a0, a1 = 0;
986	int wait = 1000;
987	int i;
988
989	for (i = 0; i < ETH_ALEN; i++)
990		((u8 *)&a0)[i] = mac_addr[i];
991
992	return vnic_dev_cmd(vdev, CMD_SET_MAC_ADDR, &a0, &a1, wait);
993}
994
995/*
996 *  vnic_dev_classifier: Add/Delete classifier entries
997 *  @vdev: vdev of the device
998 *  @cmd: CLSF_ADD for Add filter
999 *        CLSF_DEL for Delete filter
1000 *  @entry: In case of ADD filter, the caller passes the RQ number in this
1001 *          variable.
1002 *          This function stores the filter_id returned by the
1003 *          firmware in the same variable before return;
1004 *
1005 *          In case of DEL filter, the caller passes the RQ number. Return
1006 *          value is irrelevant.
1007 * @data: filter data
1008 */
1009int vnic_dev_classifier(struct vnic_dev *vdev, u8 cmd, u16 *entry,
1010	struct filter *data)
1011{
1012	u64 a0, a1;
1013	int wait = 1000;
1014	dma_addr_t tlv_pa;
1015	int ret = -EINVAL;
1016	struct filter_tlv *tlv, *tlv_va;
1017	struct filter_action *action;
1018	u64 tlv_size;
1019	static unsigned int unique_id;
1020	char z_name[RTE_MEMZONE_NAMESIZE];
1021
1022	if (cmd == CLSF_ADD) {
1023		tlv_size = sizeof(struct filter) +
1024		    sizeof(struct filter_action) +
1025		    2*sizeof(struct filter_tlv);
1026		snprintf((char *)z_name, sizeof(z_name),
1027			"vnic_clsf_%d", unique_id++);
1028		tlv_va = vdev->alloc_consistent(vdev->priv,
1029			tlv_size, &tlv_pa, (u8 *)z_name);
1030		if (!tlv_va)
1031			return -ENOMEM;
1032		tlv = tlv_va;
1033		a0 = tlv_pa;
1034		a1 = tlv_size;
1035		memset(tlv, 0, tlv_size);
1036		tlv->type = CLSF_TLV_FILTER;
1037		tlv->length = sizeof(struct filter);
1038		*(struct filter *)&tlv->val = *data;
1039
1040		tlv = (struct filter_tlv *)((char *)tlv +
1041					 sizeof(struct filter_tlv) +
1042					 sizeof(struct filter));
1043
1044		tlv->type = CLSF_TLV_ACTION;
1045		tlv->length = sizeof(struct filter_action);
1046		action = (struct filter_action *)&tlv->val;
1047		action->type = FILTER_ACTION_RQ_STEERING;
1048		action->u.rq_idx = *entry;
1049
1050		ret = vnic_dev_cmd(vdev, CMD_ADD_FILTER, &a0, &a1, wait);
1051		*entry = (u16)a0;
1052		vdev->free_consistent(vdev->priv, tlv_size, tlv_va, tlv_pa);
1053	} else if (cmd == CLSF_DEL) {
1054		a0 = *entry;
1055		ret = vnic_dev_cmd(vdev, CMD_DEL_FILTER, &a0, &a1, wait);
1056	}
1057
1058	return ret;
1059}
1060