summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/fnic/fnic_res.c
blob: 33dd27f6f24e82e95f2b80e672efb20a8bebf73b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
 */
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/pci.h>
#include "wq_enet_desc.h"
#include "rq_enet_desc.h"
#include "cq_enet_desc.h"
#include "vnic_resource.h"
#include "vnic_dev.h"
#include "vnic_wq.h"
#include "vnic_rq.h"
#include "vnic_cq.h"
#include "vnic_intr.h"
#include "vnic_stats.h"
#include "vnic_nic.h"
#include "fnic.h"

int fnic_get_vnic_config(struct fnic *fnic)
{
	struct vnic_fc_config *c = &fnic->config;
	int err;

#define GET_CONFIG(m) \
	do { \
		err = vnic_dev_spec(fnic->vdev, \
				    offsetof(struct vnic_fc_config, m), \
				    sizeof(c->m), &c->m); \
		if (err) { \
			shost_printk(KERN_ERR, fnic->lport->host, \
				     "Error getting %s, %d\n", #m, \
				     err); \
			return err; \
		} \
	} while (0);

	GET_CONFIG(node_wwn);
	GET_CONFIG(port_wwn);
	GET_CONFIG(wq_enet_desc_count);
	GET_CONFIG(wq_copy_desc_count);
	GET_CONFIG(rq_desc_count);
	GET_CONFIG(maxdatafieldsize);
	GET_CONFIG(ed_tov);
	GET_CONFIG(ra_tov);
	GET_CONFIG(intr_timer);
	GET_CONFIG(intr_timer_type);
	GET_CONFIG(flags);
	GET_CONFIG(flogi_retries);
	GET_CONFIG(flogi_timeout);
	GET_CONFIG(plogi_retries);
	GET_CONFIG(plogi_timeout);
	GET_CONFIG(io_throttle_count);
	GET_CONFIG(link_down_timeout);
	GET_CONFIG(port_down_timeout);
	GET_CONFIG(port_down_io_retries);
	GET_CONFIG(luns_per_tgt);
	GET_CONFIG(intr_mode);
	GET_CONFIG(wq_copy_count);

	c->wq_enet_desc_count =
		min_t(u32, VNIC_FNIC_WQ_DESCS_MAX,
		      max_t(u32, VNIC_FNIC_WQ_DESCS_MIN,
			    c->wq_enet_desc_count));
	c->wq_enet_desc_count = ALIGN(c->wq_enet_desc_count, 16);

	c->wq_copy_desc_count =
		min_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MAX,
		      max_t(u32, VNIC_FNIC_WQ_COPY_DESCS_MIN,
			    c->wq_copy_desc_count));
	c->wq_copy_desc_count = ALIGN(c->wq_copy_desc_count, 16);

	c->rq_desc_count =
		min_t(u32, VNIC_FNIC_RQ_DESCS_MAX,
		      max_t(u32, VNIC_FNIC_RQ_DESCS_MIN,
			    c->rq_desc_count));
	c->rq_desc_count = ALIGN(c->rq_desc_count, 16);

	c->maxdatafieldsize =
		min_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MAX,
		      max_t(u16, VNIC_FNIC_MAXDATAFIELDSIZE_MIN,
			    c->maxdatafieldsize));
	c->ed_tov =
		min_t(u32, VNIC_FNIC_EDTOV_MAX,
		      max_t(u32, VNIC_FNIC_EDTOV_MIN,
			    c->ed_tov));

	c->ra_tov =
		min_t(u32, VNIC_FNIC_RATOV_MAX,
		      max_t(u32, VNIC_FNIC_RATOV_MIN,
			    c->ra_tov));

	c->flogi_retries =
		min_t(u32, VNIC_FNIC_FLOGI_RETRIES_MAX, c->flogi_retries);

	c->flogi_timeout =
		min_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MAX,
		      max_t(u32, VNIC_FNIC_FLOGI_TIMEOUT_MIN,
			    c->flogi_timeout));

	c->plogi_retries =
		min_t(u32, VNIC_FNIC_PLOGI_RETRIES_MAX, c->plogi_retries);

	c->plogi_timeout =
		min_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MAX,
		      max_t(u32, VNIC_FNIC_PLOGI_TIMEOUT_MIN,
			    c->plogi_timeout));

	c->io_throttle_count =
		min_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MAX,
		      max_t(u32, VNIC_FNIC_IO_THROTTLE_COUNT_MIN,
			    c->io_throttle_count));

	c->link_down_timeout =
		min_t(u32, VNIC_FNIC_LINK_DOWN_TIMEOUT_MAX,
		      c->link_down_timeout);

	c->port_down_timeout =
		min_t(u32, VNIC_FNIC_PORT_DOWN_TIMEOUT_MAX,
		      c->port_down_timeout);

	c->port_down_io_retries =
		min_t(u32, VNIC_FNIC_PORT_DOWN_IO_RETRIES_MAX,
		      c->port_down_io_retries);

	c->luns_per_tgt =
		min_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MAX,
		      max_t(u32, VNIC_FNIC_LUNS_PER_TARGET_MIN,
			    c->luns_per_tgt));

	c->intr_timer = min_t(u16, VNIC_INTR_TIMER_MAX, c->intr_timer);
	c->intr_timer_type = c->intr_timer_type;

	/* for older firmware, GET_CONFIG will not return anything */
	if (c->wq_copy_count == 0)
		c->wq_copy_count = 1;

	c->wq_copy_count = min_t(u16, FNIC_WQ_COPY_MAX, c->wq_copy_count);

	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC MAC addr %pM "
		     "wq/wq_copy/rq %d/%d/%d\n",
		     fnic->ctlr.ctl_src_addr,
		     c->wq_enet_desc_count, c->wq_copy_desc_count,
		     c->rq_desc_count);
	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC node wwn %llx port wwn %llx\n",
		     c->node_wwn, c->port_wwn);
	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC ed_tov %d ra_tov %d\n",
		     c->ed_tov, c->ra_tov);
	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC mtu %d intr timer %d\n",
		     c->maxdatafieldsize, c->intr_timer);
	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC flags 0x%x luns per tgt %d\n",
		     c->flags, c->luns_per_tgt);
	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC flogi_retries %d flogi timeout %d\n",
		     c->flogi_retries, c->flogi_timeout);
	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC plogi retries %d plogi timeout %d\n",
		     c->plogi_retries, c->plogi_timeout);
	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC io throttle count %d link dn timeout %d\n",
		     c->io_throttle_count, c->link_down_timeout);
	shost_printk(KERN_INFO, fnic->lport->host,
		     "vNIC port dn io retries %d port dn timeout %d\n",
		     c->port_down_io_retries, c->port_down_timeout);
	shost_printk(KERN_INFO, fnic->lport->host,
			"vNIC wq_copy_count: %d\n", c->wq_copy_count);
	shost_printk(KERN_INFO, fnic->lport->host,
			"vNIC intr mode: %d\n", c->intr_mode);

	return 0;
}

int fnic_set_nic_config(struct fnic *fnic, u8 rss_default_cpu,
			u8 rss_hash_type,
			u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable,
			u8 tso_ipid_split_en, u8 ig_vlan_strip_en)
{
	u64 a0, a1;
	u32 nic_cfg;
	int wait = 1000;

	vnic_set_nic_cfg(&nic_cfg, rss_default_cpu,
		rss_hash_type, rss_hash_bits, rss_base_cpu,
		rss_enable, tso_ipid_split_en, ig_vlan_strip_en);

	a0 = nic_cfg;
	a1 = 0;

	return vnic_dev_cmd(fnic->vdev, CMD_NIC_CFG, &a0, &a1, wait);
}

void fnic_get_res_counts(struct fnic *fnic)
{
	fnic->wq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_WQ);
	fnic->raw_wq_count = 1;
	fnic->wq_copy_count = fnic->config.wq_copy_count;
	fnic->rq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_RQ);
	fnic->cq_count = vnic_dev_get_res_count(fnic->vdev, RES_TYPE_CQ);
	fnic->intr_count = vnic_dev_get_res_count(fnic->vdev,
		RES_TYPE_INTR_CTRL);

	shost_printk(KERN_INFO, fnic->lport->host,
		"vNIC fw resources wq_count: %d\n", fnic->wq_count);
	shost_printk(KERN_INFO, fnic->lport->host,
		"vNIC fw resources raw_wq_count: %d\n", fnic->raw_wq_count);
	shost_printk(KERN_INFO, fnic->lport->host,
		"vNIC fw resources wq_copy_count: %d\n", fnic->wq_copy_count);
	shost_printk(KERN_INFO, fnic->lport->host,
		"vNIC fw resources rq_count: %d\n", fnic->rq_count);
	shost_printk(KERN_INFO, fnic->lport->host,
		"vNIC fw resources cq_count: %d\n", fnic->cq_count);
	shost_printk(KERN_INFO, fnic->lport->host,
		"vNIC fw resources intr_count: %d\n", fnic->intr_count);
}

void fnic_free_vnic_resources(struct fnic *fnic)
{
	unsigned int i;

	for (i = 0; i < fnic->raw_wq_count; i++)
		vnic_wq_free(&fnic->wq[i]);

	for (i = 0; i < fnic->wq_copy_count; i++)
		vnic_wq_copy_free(&fnic->hw_copy_wq[i]);

	for (i = 0; i < fnic->rq_count; i++)
		vnic_rq_free(&fnic->rq[i]);

	for (i = 0; i < fnic->cq_count; i++)
		vnic_cq_free(&fnic->cq[i]);

	for (i = 0; i < fnic->intr_count; i++)
		vnic_intr_free(&fnic->intr[i]);
}

int fnic_alloc_vnic_resources(struct fnic *fnic)
{
	enum vnic_dev_intr_mode intr_mode;
	unsigned int mask_on_assertion;
	unsigned int interrupt_offset;
	unsigned int error_interrupt_enable;
	unsigned int error_interrupt_offset;
	unsigned int i, cq_index;
	unsigned int wq_copy_cq_desc_count;
	int err;

	intr_mode = vnic_dev_get_intr_mode(fnic->vdev);

	shost_printk(KERN_INFO, fnic->lport->host, "vNIC interrupt mode: %s\n",
		     intr_mode == VNIC_DEV_INTR_MODE_INTX ? "legacy PCI INTx" :
		     intr_mode == VNIC_DEV_INTR_MODE_MSI ? "MSI" :
		     intr_mode == VNIC_DEV_INTR_MODE_MSIX ?
		     "MSI-X" : "unknown");

	shost_printk(KERN_INFO, fnic->lport->host,
			"vNIC resources avail: wq %d cp_wq %d raw_wq %d rq %d",
			fnic->wq_count, fnic->wq_copy_count,
			fnic->raw_wq_count, fnic->rq_count);

	shost_printk(KERN_INFO, fnic->lport->host,
			"vNIC resources avail: cq %d intr %d cpy-wq desc count %d\n",
			fnic->cq_count, fnic->intr_count,
			fnic->config.wq_copy_desc_count);

	/* Allocate Raw WQ used for FCS frames */
	for (i = 0; i < fnic->raw_wq_count; i++) {
		err = vnic_wq_alloc(fnic->vdev, &fnic->wq[i], i,
			fnic->config.wq_enet_desc_count,
			sizeof(struct wq_enet_desc));
		if (err)
			goto err_out_cleanup;
	}

	/* Allocate Copy WQs used for SCSI IOs */
	for (i = 0; i < fnic->wq_copy_count; i++) {
		err = vnic_wq_copy_alloc(fnic->vdev, &fnic->hw_copy_wq[i],
			(fnic->raw_wq_count + i),
			fnic->config.wq_copy_desc_count,
			sizeof(struct fcpio_host_req));
		if (err)
			goto err_out_cleanup;
	}

	/* RQ for receiving FCS frames */
	for (i = 0; i < fnic->rq_count; i++) {
		err = vnic_rq_alloc(fnic->vdev, &fnic->rq[i], i,
			fnic->config.rq_desc_count,
			sizeof(struct rq_enet_desc));
		if (err)
			goto err_out_cleanup;
	}

	/* CQ for each RQ */
	for (i = 0; i < fnic->rq_count; i++) {
		cq_index = i;
		err = vnic_cq_alloc(fnic->vdev,
			&fnic->cq[cq_index], cq_index,
			fnic->config.rq_desc_count,
			sizeof(struct cq_enet_rq_desc));
		if (err)
			goto err_out_cleanup;
	}

	/* CQ for each WQ */
	for (i = 0; i < fnic->raw_wq_count; i++) {
		cq_index = fnic->rq_count + i;
		err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index], cq_index,
			fnic->config.wq_enet_desc_count,
			sizeof(struct cq_enet_wq_desc));
		if (err)
			goto err_out_cleanup;
	}

	/* CQ for each COPY WQ */
	wq_copy_cq_desc_count = (fnic->config.wq_copy_desc_count * 3);
	for (i = 0; i < fnic->wq_copy_count; i++) {
		cq_index = fnic->raw_wq_count + fnic->rq_count + i;
		err = vnic_cq_alloc(fnic->vdev, &fnic->cq[cq_index],
			cq_index,
			wq_copy_cq_desc_count,
			sizeof(struct fcpio_fw_req));
		if (err)
			goto err_out_cleanup;
	}

	for (i = 0; i < fnic->intr_count; i++) {
		err = vnic_intr_alloc(fnic->vdev, &fnic->intr[i], i);
		if (err)
			goto err_out_cleanup;
	}

	fnic->legacy_pba = vnic_dev_get_res(fnic->vdev,
				RES_TYPE_INTR_PBA_LEGACY, 0);

	if (!fnic->legacy_pba && intr_mode == VNIC_DEV_INTR_MODE_INTX) {
		shost_printk(KERN_ERR, fnic->lport->host,
			     "Failed to hook legacy pba resource\n");
		err = -ENODEV;
		goto err_out_cleanup;
	}

	/*
	 * Init RQ/WQ resources.
	 *
	 * RQ[0 to n-1] point to CQ[0 to n-1]
	 * WQ[0 to m-1] point to CQ[n to n+m-1]
	 * WQ_COPY[0 to k-1] points to CQ[n+m to n+m+k-1]
	 *
	 * Note for copy wq we always initialize with cq_index = 0
	 *
	 * Error interrupt is not enabled for MSI.
	 */

	switch (intr_mode) {
	case VNIC_DEV_INTR_MODE_INTX:
	case VNIC_DEV_INTR_MODE_MSIX:
		error_interrupt_enable = 1;
		error_interrupt_offset = fnic->err_intr_offset;
		break;
	default:
		error_interrupt_enable = 0;
		error_interrupt_offset = 0;
		break;
	}

	for (i = 0; i < fnic->rq_count; i++) {
		cq_index = i;
		vnic_rq_init(&fnic->rq[i],
			     cq_index,
			     error_interrupt_enable,
			     error_interrupt_offset);
	}

	for (i = 0; i < fnic->raw_wq_count; i++) {
		cq_index = i + fnic->rq_count;
		vnic_wq_init(&fnic->wq[i],
			     cq_index,
			     error_interrupt_enable,
			     error_interrupt_offset);
	}

	for (i = 0; i < fnic->wq_copy_count; i++) {
		vnic_wq_copy_init(&fnic->hw_copy_wq[i],
				  0 /* cq_index 0 - always */,
				  error_interrupt_enable,
				  error_interrupt_offset);
	}

	for (i = 0; i < fnic->cq_count; i++) {

		switch (intr_mode) {
		case VNIC_DEV_INTR_MODE_MSIX:
			interrupt_offset = i;
			break;
		default:
			interrupt_offset = 0;
			break;
		}

		vnic_cq_init(&fnic->cq[i],
			0 /* flow_control_enable */,
			1 /* color_enable */,
			0 /* cq_head */,
			0 /* cq_tail */,
			1 /* cq_tail_color */,
			1 /* interrupt_enable */,
			1 /* cq_entry_enable */,
			0 /* cq_message_enable */,
			interrupt_offset,
			0 /* cq_message_addr */);
	}

	/*
	 * Init INTR resources
	 *
	 * mask_on_assertion is not used for INTx due to the level-
	 * triggered nature of INTx
	 */

	switch (intr_mode) {
	case VNIC_DEV_INTR_MODE_MSI:
	case VNIC_DEV_INTR_MODE_MSIX:
		mask_on_assertion = 1;
		break;
	default:
		mask_on_assertion = 0;
		break;
	}

	for (i = 0; i < fnic->intr_count; i++) {
		vnic_intr_init(&fnic->intr[i],
			fnic->config.intr_timer,
			fnic->config.intr_timer_type,
			mask_on_assertion);
	}

	/* init the stats memory by making the first call here */
	err = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
	if (err) {
		shost_printk(KERN_ERR, fnic->lport->host,
			     "vnic_dev_stats_dump failed - x%x\n", err);
		goto err_out_cleanup;
	}

	/* Clear LIF stats */
	vnic_dev_stats_clear(fnic->vdev);

	return 0;

err_out_cleanup:
	fnic_free_vnic_resources(fnic);

	return err;
}