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WIP FPC-III support
[linux/fpc-iii.git] / drivers / net / ethernet / netronome / nfp / nfp_net_main.c
blob921db40047d780b2039d413609ae8cb12f961bb7
1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 /* Copyright (C) 2015-2018 Netronome Systems, Inc. */
3
4 /*
5 * nfp_net_main.c
6 * Netronome network device driver: Main entry point
7 * Authors: Jakub Kicinski <jakub.kicinski@netronome.com>
8 * Alejandro Lucero <alejandro.lucero@netronome.com>
9 * Jason McMullan <jason.mcmullan@netronome.com>
10 * Rolf Neugebauer <rolf.neugebauer@netronome.com>
11 */
12
13 #include <linux/etherdevice.h>
14 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/lockdep.h>
17 #include <linux/pci.h>
18 #include <linux/pci_regs.h>
19 #include <linux/msi.h>
20 #include <linux/random.h>
21 #include <linux/rtnetlink.h>
22
23 #include "nfpcore/nfp.h"
24 #include "nfpcore/nfp_cpp.h"
25 #include "nfpcore/nfp_nffw.h"
26 #include "nfpcore/nfp_nsp.h"
27 #include "nfpcore/nfp6000_pcie.h"
28 #include "nfp_app.h"
29 #include "nfp_net_ctrl.h"
30 #include "nfp_net_sriov.h"
31 #include "nfp_net.h"
32 #include "nfp_main.h"
33 #include "nfp_port.h"
34
35 #define NFP_PF_CSR_SLICE_SIZE (32 * 1024)
36
37 /**
38 * nfp_net_get_mac_addr() - Get the MAC address.
39 * @pf: NFP PF handle
40 * @netdev: net_device to set MAC address on
41 * @port: NFP port structure
42 *
43 * First try to get the MAC address from NSP ETH table. If that
44 * fails generate a random address.
45 */
46 void
47 nfp_net_get_mac_addr(struct nfp_pf *pf, struct net_device *netdev,
48 struct nfp_port *port)
49 {
50 struct nfp_eth_table_port *eth_port;
51
52 eth_port = __nfp_port_get_eth_port(port);
53 if (!eth_port) {
54 eth_hw_addr_random(netdev);
55 return;
56 }
57
58 ether_addr_copy(netdev->dev_addr, eth_port->mac_addr);
59 ether_addr_copy(netdev->perm_addr, eth_port->mac_addr);
60 }
61
62 static struct nfp_eth_table_port *
63 nfp_net_find_port(struct nfp_eth_table *eth_tbl, unsigned int index)
64 {
65 int i;
66
67 for (i = 0; eth_tbl && i < eth_tbl->count; i++)
68 if (eth_tbl->ports[i].index == index)
69 return &eth_tbl->ports[i];
70
71 return NULL;
72 }
73
74 static int nfp_net_pf_get_num_ports(struct nfp_pf *pf)
75 {
76 return nfp_pf_rtsym_read_optional(pf, "nfd_cfg_pf%u_num_ports", 1);
77 }
78
79 static int nfp_net_pf_get_app_id(struct nfp_pf *pf)
80 {
81 return nfp_pf_rtsym_read_optional(pf, "_pf%u_net_app_id",
82 NFP_APP_CORE_NIC);
83 }
84
85 static void nfp_net_pf_free_vnic(struct nfp_pf *pf, struct nfp_net *nn)
86 {
87 if (nfp_net_is_data_vnic(nn))
88 nfp_app_vnic_free(pf->app, nn);
89 nfp_port_free(nn->port);
90 list_del(&nn->vnic_list);
91 pf->num_vnics--;
92 nfp_net_free(nn);
93 }
94
95 static void nfp_net_pf_free_vnics(struct nfp_pf *pf)
96 {
97 struct nfp_net *nn, *next;
98
99 list_for_each_entry_safe(nn, next, &pf->vnics, vnic_list)
100 if (nfp_net_is_data_vnic(nn))
101 nfp_net_pf_free_vnic(pf, nn);
102 }
103
104 static struct nfp_net *
105 nfp_net_pf_alloc_vnic(struct nfp_pf *pf, bool needs_netdev,
106 void __iomem *ctrl_bar, void __iomem *qc_bar,
107 int stride, unsigned int id)
108 {
109 u32 tx_base, rx_base, n_tx_rings, n_rx_rings;
110 struct nfp_net *nn;
111 int err;
112
113 tx_base = readl(ctrl_bar + NFP_NET_CFG_START_TXQ);
114 rx_base = readl(ctrl_bar + NFP_NET_CFG_START_RXQ);
115 n_tx_rings = readl(ctrl_bar + NFP_NET_CFG_MAX_TXRINGS);
116 n_rx_rings = readl(ctrl_bar + NFP_NET_CFG_MAX_RXRINGS);
117
118 /* Allocate and initialise the vNIC */
119 nn = nfp_net_alloc(pf->pdev, ctrl_bar, needs_netdev,
120 n_tx_rings, n_rx_rings);
121 if (IS_ERR(nn))
122 return nn;
123
124 nn->app = pf->app;
125 nfp_net_get_fw_version(&nn->fw_ver, ctrl_bar);
126 nn->tx_bar = qc_bar + tx_base * NFP_QCP_QUEUE_ADDR_SZ;
127 nn->rx_bar = qc_bar + rx_base * NFP_QCP_QUEUE_ADDR_SZ;
128 nn->dp.is_vf = 0;
129 nn->stride_rx = stride;
130 nn->stride_tx = stride;
131
132 if (needs_netdev) {
133 err = nfp_app_vnic_alloc(pf->app, nn, id);
134 if (err) {
135 nfp_net_free(nn);
136 return ERR_PTR(err);
137 }
138 }
139
140 pf->num_vnics++;
141 list_add_tail(&nn->vnic_list, &pf->vnics);
142
143 return nn;
144 }
145
146 static int
147 nfp_net_pf_init_vnic(struct nfp_pf *pf, struct nfp_net *nn, unsigned int id)
148 {
149 int err;
150
151 nn->id = id;
152
153 if (nn->port) {
154 err = nfp_devlink_port_register(pf->app, nn->port);
155 if (err)
156 return err;
157 }
158
159 err = nfp_net_init(nn);
160 if (err)
161 goto err_devlink_port_clean;
162
163 nfp_net_debugfs_vnic_add(nn, pf->ddir);
164
165 if (nn->port)
166 nfp_devlink_port_type_eth_set(nn->port);
167
168 nfp_net_info(nn);
169
170 if (nfp_net_is_data_vnic(nn)) {
171 err = nfp_app_vnic_init(pf->app, nn);
172 if (err)
173 goto err_devlink_port_type_clean;
174 }
175
176 return 0;
177
178 err_devlink_port_type_clean:
179 if (nn->port)
180 nfp_devlink_port_type_clear(nn->port);
181 nfp_net_debugfs_dir_clean(&nn->debugfs_dir);
182 nfp_net_clean(nn);
183 err_devlink_port_clean:
184 if (nn->port)
185 nfp_devlink_port_unregister(nn->port);
186 return err;
187 }
188
189 static int
190 nfp_net_pf_alloc_vnics(struct nfp_pf *pf, void __iomem *ctrl_bar,
191 void __iomem *qc_bar, int stride)
192 {
193 struct nfp_net *nn;
194 unsigned int i;
195 int err;
196
197 for (i = 0; i < pf->max_data_vnics; i++) {
198 nn = nfp_net_pf_alloc_vnic(pf, true, ctrl_bar, qc_bar,
199 stride, i);
200 if (IS_ERR(nn)) {
201 err = PTR_ERR(nn);
202 goto err_free_prev;
203 }
204
205 ctrl_bar += NFP_PF_CSR_SLICE_SIZE;
206
207 /* Kill the vNIC if app init marked it as invalid */
208 if (nn->port && nn->port->type == NFP_PORT_INVALID)
209 nfp_net_pf_free_vnic(pf, nn);
210 }
211
212 if (list_empty(&pf->vnics))
213 return -ENODEV;
214
215 return 0;
216
217 err_free_prev:
218 nfp_net_pf_free_vnics(pf);
219 return err;
220 }
221
222 static void nfp_net_pf_clean_vnic(struct nfp_pf *pf, struct nfp_net *nn)
223 {
224 if (nfp_net_is_data_vnic(nn))
225 nfp_app_vnic_clean(pf->app, nn);
226 if (nn->port)
227 nfp_devlink_port_type_clear(nn->port);
228 nfp_net_debugfs_dir_clean(&nn->debugfs_dir);
229 nfp_net_clean(nn);
230 if (nn->port)
231 nfp_devlink_port_unregister(nn->port);
232 }
233
234 static int nfp_net_pf_alloc_irqs(struct nfp_pf *pf)
235 {
236 unsigned int wanted_irqs, num_irqs, vnics_left, irqs_left;
237 struct nfp_net *nn;
238
239 /* Get MSI-X vectors */
240 wanted_irqs = 0;
241 list_for_each_entry(nn, &pf->vnics, vnic_list)
242 wanted_irqs += NFP_NET_NON_Q_VECTORS + nn->dp.num_r_vecs;
243 pf->irq_entries = kcalloc(wanted_irqs, sizeof(*pf->irq_entries),
244 GFP_KERNEL);
245 if (!pf->irq_entries)
246 return -ENOMEM;
247
248 num_irqs = nfp_net_irqs_alloc(pf->pdev, pf->irq_entries,
249 NFP_NET_MIN_VNIC_IRQS * pf->num_vnics,
250 wanted_irqs);
251 if (!num_irqs) {
252 nfp_warn(pf->cpp, "Unable to allocate MSI-X vectors\n");
253 kfree(pf->irq_entries);
254 return -ENOMEM;
255 }
256
257 /* Distribute IRQs to vNICs */
258 irqs_left = num_irqs;
259 vnics_left = pf->num_vnics;
260 list_for_each_entry(nn, &pf->vnics, vnic_list) {
261 unsigned int n;
262
263 n = min(NFP_NET_NON_Q_VECTORS + nn->dp.num_r_vecs,
264 DIV_ROUND_UP(irqs_left, vnics_left));
265 nfp_net_irqs_assign(nn, &pf->irq_entries[num_irqs - irqs_left],
266 n);
267 irqs_left -= n;
268 vnics_left--;
269 }
270
271 return 0;
272 }
273
274 static void nfp_net_pf_free_irqs(struct nfp_pf *pf)
275 {
276 nfp_net_irqs_disable(pf->pdev);
277 kfree(pf->irq_entries);
278 }
279
280 static int nfp_net_pf_init_vnics(struct nfp_pf *pf)
281 {
282 struct nfp_net *nn;
283 unsigned int id;
284 int err;
285
286 /* Finish vNIC init and register */
287 id = 0;
288 list_for_each_entry(nn, &pf->vnics, vnic_list) {
289 if (!nfp_net_is_data_vnic(nn))
290 continue;
291 err = nfp_net_pf_init_vnic(pf, nn, id);
292 if (err)
293 goto err_prev_deinit;
294
295 id++;
296 }
297
298 return 0;
299
300 err_prev_deinit:
301 list_for_each_entry_continue_reverse(nn, &pf->vnics, vnic_list)
302 if (nfp_net_is_data_vnic(nn))
303 nfp_net_pf_clean_vnic(pf, nn);
304 return err;
305 }
306
307 static int
308 nfp_net_pf_app_init(struct nfp_pf *pf, u8 __iomem *qc_bar, unsigned int stride)
309 {
310 u8 __iomem *ctrl_bar;
311 int err;
312
313 pf->app = nfp_app_alloc(pf, nfp_net_pf_get_app_id(pf));
314 if (IS_ERR(pf->app))
315 return PTR_ERR(pf->app);
316
317 mutex_lock(&pf->lock);
318 err = nfp_app_init(pf->app);
319 mutex_unlock(&pf->lock);
320 if (err)
321 goto err_free;
322
323 if (!nfp_app_needs_ctrl_vnic(pf->app))
324 return 0;
325
326 ctrl_bar = nfp_pf_map_rtsym(pf, "net.ctrl", "_pf%u_net_ctrl_bar",
327 NFP_PF_CSR_SLICE_SIZE, &pf->ctrl_vnic_bar);
328 if (IS_ERR(ctrl_bar)) {
329 nfp_err(pf->cpp, "Failed to find ctrl vNIC memory symbol\n");
330 err = PTR_ERR(ctrl_bar);
331 goto err_app_clean;
332 }
333
334 pf->ctrl_vnic = nfp_net_pf_alloc_vnic(pf, false, ctrl_bar, qc_bar,
335 stride, 0);
336 if (IS_ERR(pf->ctrl_vnic)) {
337 err = PTR_ERR(pf->ctrl_vnic);
338 goto err_unmap;
339 }
340
341 return 0;
342
343 err_unmap:
344 nfp_cpp_area_release_free(pf->ctrl_vnic_bar);
345 err_app_clean:
346 mutex_lock(&pf->lock);
347 nfp_app_clean(pf->app);
348 mutex_unlock(&pf->lock);
349 err_free:
350 nfp_app_free(pf->app);
351 pf->app = NULL;
352 return err;
353 }
354
355 static void nfp_net_pf_app_clean(struct nfp_pf *pf)
356 {
357 if (pf->ctrl_vnic) {
358 nfp_net_pf_free_vnic(pf, pf->ctrl_vnic);
359 nfp_cpp_area_release_free(pf->ctrl_vnic_bar);
360 }
361
362 mutex_lock(&pf->lock);
363 nfp_app_clean(pf->app);
364 mutex_unlock(&pf->lock);
365
366 nfp_app_free(pf->app);
367 pf->app = NULL;
368 }
369
370 static int nfp_net_pf_app_start_ctrl(struct nfp_pf *pf)
371 {
372 int err;
373
374 if (!pf->ctrl_vnic)
375 return 0;
376 err = nfp_net_pf_init_vnic(pf, pf->ctrl_vnic, 0);
377 if (err)
378 return err;
379
380 err = nfp_ctrl_open(pf->ctrl_vnic);
381 if (err)
382 goto err_clean_ctrl;
383
384 return 0;
385
386 err_clean_ctrl:
387 nfp_net_pf_clean_vnic(pf, pf->ctrl_vnic);
388 return err;
389 }
390
391 static void nfp_net_pf_app_stop_ctrl(struct nfp_pf *pf)
392 {
393 if (!pf->ctrl_vnic)
394 return;
395 nfp_ctrl_close(pf->ctrl_vnic);
396 nfp_net_pf_clean_vnic(pf, pf->ctrl_vnic);
397 }
398
399 static int nfp_net_pf_app_start(struct nfp_pf *pf)
400 {
401 int err;
402
403 err = nfp_net_pf_app_start_ctrl(pf);
404 if (err)
405 return err;
406
407 err = nfp_app_start(pf->app, pf->ctrl_vnic);
408 if (err)
409 goto err_ctrl_stop;
410
411 if (pf->num_vfs) {
412 err = nfp_app_sriov_enable(pf->app, pf->num_vfs);
413 if (err)
414 goto err_app_stop;
415 }
416
417 return 0;
418
419 err_app_stop:
420 nfp_app_stop(pf->app);
421 err_ctrl_stop:
422 nfp_net_pf_app_stop_ctrl(pf);
423 return err;
424 }
425
426 static void nfp_net_pf_app_stop(struct nfp_pf *pf)
427 {
428 if (pf->num_vfs)
429 nfp_app_sriov_disable(pf->app);
430 nfp_app_stop(pf->app);
431 nfp_net_pf_app_stop_ctrl(pf);
432 }
433
434 static void nfp_net_pci_unmap_mem(struct nfp_pf *pf)
435 {
436 if (pf->vfcfg_tbl2_area)
437 nfp_cpp_area_release_free(pf->vfcfg_tbl2_area);
438 if (pf->vf_cfg_bar)
439 nfp_cpp_area_release_free(pf->vf_cfg_bar);
440 if (pf->mac_stats_bar)
441 nfp_cpp_area_release_free(pf->mac_stats_bar);
442 nfp_cpp_area_release_free(pf->qc_area);
443 nfp_cpp_area_release_free(pf->data_vnic_bar);
444 }
445
446 static int nfp_net_pci_map_mem(struct nfp_pf *pf)
447 {
448 u32 min_size, cpp_id;
449 u8 __iomem *mem;
450 int err;
451
452 min_size = pf->max_data_vnics * NFP_PF_CSR_SLICE_SIZE;
453 mem = nfp_pf_map_rtsym(pf, "net.bar0", "_pf%d_net_bar0",
454 min_size, &pf->data_vnic_bar);
455 if (IS_ERR(mem)) {
456 nfp_err(pf->cpp, "Failed to find data vNIC memory symbol\n");
457 return PTR_ERR(mem);
458 }
459
460 if (pf->eth_tbl) {
461 min_size = NFP_MAC_STATS_SIZE * (pf->eth_tbl->max_index + 1);
462 pf->mac_stats_mem = nfp_rtsym_map(pf->rtbl, "_mac_stats",
463 "net.macstats", min_size,
464 &pf->mac_stats_bar);
465 if (IS_ERR(pf->mac_stats_mem)) {
466 if (PTR_ERR(pf->mac_stats_mem) != -ENOENT) {
467 err = PTR_ERR(pf->mac_stats_mem);
468 goto err_unmap_ctrl;
469 }
470 pf->mac_stats_mem = NULL;
471 }
472 }
473
474 pf->vf_cfg_mem = nfp_pf_map_rtsym(pf, "net.vfcfg", "_pf%d_net_vf_bar",
475 NFP_NET_CFG_BAR_SZ * pf->limit_vfs,
476 &pf->vf_cfg_bar);
477 if (IS_ERR(pf->vf_cfg_mem)) {
478 if (PTR_ERR(pf->vf_cfg_mem) != -ENOENT) {
479 err = PTR_ERR(pf->vf_cfg_mem);
480 goto err_unmap_mac_stats;
481 }
482 pf->vf_cfg_mem = NULL;
483 }
484
485 min_size = NFP_NET_VF_CFG_SZ * pf->limit_vfs + NFP_NET_VF_CFG_MB_SZ;
486 pf->vfcfg_tbl2 = nfp_pf_map_rtsym(pf, "net.vfcfg_tbl2",
487 "_pf%d_net_vf_cfg2",
488 min_size, &pf->vfcfg_tbl2_area);
489 if (IS_ERR(pf->vfcfg_tbl2)) {
490 if (PTR_ERR(pf->vfcfg_tbl2) != -ENOENT) {
491 err = PTR_ERR(pf->vfcfg_tbl2);
492 goto err_unmap_vf_cfg;
493 }
494 pf->vfcfg_tbl2 = NULL;
495 }
496
497 cpp_id = NFP_CPP_ISLAND_ID(0, NFP_CPP_ACTION_RW, 0, 0);
498 mem = nfp_cpp_map_area(pf->cpp, "net.qc", cpp_id, NFP_PCIE_QUEUE(0),
499 NFP_QCP_QUEUE_AREA_SZ, &pf->qc_area);
500 if (IS_ERR(mem)) {
501 nfp_err(pf->cpp, "Failed to map Queue Controller area.\n");
502 err = PTR_ERR(mem);
503 goto err_unmap_vfcfg_tbl2;
504 }
505
506 return 0;
507
508 err_unmap_vfcfg_tbl2:
509 if (pf->vfcfg_tbl2_area)
510 nfp_cpp_area_release_free(pf->vfcfg_tbl2_area);
511 err_unmap_vf_cfg:
512 if (pf->vf_cfg_bar)
513 nfp_cpp_area_release_free(pf->vf_cfg_bar);
514 err_unmap_mac_stats:
515 if (pf->mac_stats_bar)
516 nfp_cpp_area_release_free(pf->mac_stats_bar);
517 err_unmap_ctrl:
518 nfp_cpp_area_release_free(pf->data_vnic_bar);
519 return err;
520 }
521
522 static int
523 nfp_net_eth_port_update(struct nfp_cpp *cpp, struct nfp_port *port,
524 struct nfp_eth_table *eth_table)
525 {
526 struct nfp_eth_table_port *eth_port;
527
528 ASSERT_RTNL();
529
530 eth_port = nfp_net_find_port(eth_table, port->eth_id);
531 if (!eth_port) {
532 set_bit(NFP_PORT_CHANGED, &port->flags);
533 nfp_warn(cpp, "Warning: port #%d not present after reconfig\n",
534 port->eth_id);
535 return -EIO;
536 }
537 if (eth_port->override_changed) {
538 nfp_warn(cpp, "Port #%d config changed, unregistering. Driver reload required before port will be operational again.\n", port->eth_id);
539 port->type = NFP_PORT_INVALID;
540 }
541
542 memcpy(port->eth_port, eth_port, sizeof(*eth_port));
543
544 return 0;
545 }
546
547 int nfp_net_refresh_port_table_sync(struct nfp_pf *pf)
548 {
549 struct nfp_eth_table *eth_table;
550 struct nfp_net *nn, *next;
551 struct nfp_port *port;
552 int err;
553
554 lockdep_assert_held(&pf->lock);
555
556 /* Check for nfp_net_pci_remove() racing against us */
557 if (list_empty(&pf->vnics))
558 return 0;
559
560 /* Update state of all ports */
561 rtnl_lock();
562 list_for_each_entry(port, &pf->ports, port_list)
563 clear_bit(NFP_PORT_CHANGED, &port->flags);
564
565 eth_table = nfp_eth_read_ports(pf->cpp);
566 if (!eth_table) {
567 list_for_each_entry(port, &pf->ports, port_list)
568 if (__nfp_port_get_eth_port(port))
569 set_bit(NFP_PORT_CHANGED, &port->flags);
570 rtnl_unlock();
571 nfp_err(pf->cpp, "Error refreshing port config!\n");
572 return -EIO;
573 }
574
575 list_for_each_entry(port, &pf->ports, port_list)
576 if (__nfp_port_get_eth_port(port))
577 nfp_net_eth_port_update(pf->cpp, port, eth_table);
578 rtnl_unlock();
579
580 kfree(eth_table);
581
582 /* Resync repr state. This may cause reprs to be removed. */
583 err = nfp_reprs_resync_phys_ports(pf->app);
584 if (err)
585 return err;
586
587 /* Shoot off the ports which became invalid */
588 list_for_each_entry_safe(nn, next, &pf->vnics, vnic_list) {
589 if (!nn->port || nn->port->type != NFP_PORT_INVALID)
590 continue;
591
592 nfp_net_pf_clean_vnic(pf, nn);
593 nfp_net_pf_free_vnic(pf, nn);
594 }
595
596 return 0;
597 }
598
599 static void nfp_net_refresh_vnics(struct work_struct *work)
600 {
601 struct nfp_pf *pf = container_of(work, struct nfp_pf,
602 port_refresh_work);
603
604 mutex_lock(&pf->lock);
605 nfp_net_refresh_port_table_sync(pf);
606 mutex_unlock(&pf->lock);
607 }
608
609 void nfp_net_refresh_port_table(struct nfp_port *port)
610 {
611 struct nfp_pf *pf = port->app->pf;
612
613 set_bit(NFP_PORT_CHANGED, &port->flags);
614
615 queue_work(pf->wq, &pf->port_refresh_work);
616 }
617
618 int nfp_net_refresh_eth_port(struct nfp_port *port)
619 {
620 struct nfp_cpp *cpp = port->app->cpp;
621 struct nfp_eth_table *eth_table;
622 int ret;
623
624 clear_bit(NFP_PORT_CHANGED, &port->flags);
625
626 eth_table = nfp_eth_read_ports(cpp);
627 if (!eth_table) {
628 set_bit(NFP_PORT_CHANGED, &port->flags);
629 nfp_err(cpp, "Error refreshing port state table!\n");
630 return -EIO;
631 }
632
633 ret = nfp_net_eth_port_update(cpp, port, eth_table);
634
635 kfree(eth_table);
636
637 return ret;
638 }
639
640 /*
641 * PCI device functions
642 */
643 int nfp_net_pci_probe(struct nfp_pf *pf)
644 {
645 struct devlink *devlink = priv_to_devlink(pf);
646 struct nfp_net_fw_version fw_ver;
647 u8 __iomem *ctrl_bar, *qc_bar;
648 int stride;
649 int err;
650
651 INIT_WORK(&pf->port_refresh_work, nfp_net_refresh_vnics);
652
653 if (!pf->rtbl) {
654 nfp_err(pf->cpp, "No %s, giving up.\n",
655 pf->fw_loaded ? "symbol table" : "firmware found");
656 return -EINVAL;
657 }
658
659 pf->max_data_vnics = nfp_net_pf_get_num_ports(pf);
660 if ((int)pf->max_data_vnics < 0)
661 return pf->max_data_vnics;
662
663 err = nfp_net_pci_map_mem(pf);
664 if (err)
665 return err;
666
667 ctrl_bar = nfp_cpp_area_iomem(pf->data_vnic_bar);
668 qc_bar = nfp_cpp_area_iomem(pf->qc_area);
669 if (!ctrl_bar || !qc_bar) {
670 err = -EIO;
671 goto err_unmap;
672 }
673
674 nfp_net_get_fw_version(&fw_ver, ctrl_bar);
675 if (fw_ver.resv || fw_ver.class != NFP_NET_CFG_VERSION_CLASS_GENERIC) {
676 nfp_err(pf->cpp, "Unknown Firmware ABI %d.%d.%d.%d\n",
677 fw_ver.resv, fw_ver.class, fw_ver.major, fw_ver.minor);
678 err = -EINVAL;
679 goto err_unmap;
680 }
681
682 /* Determine stride */
683 if (nfp_net_fw_ver_eq(&fw_ver, 0, 0, 0, 1)) {
684 stride = 2;
685 nfp_warn(pf->cpp, "OBSOLETE Firmware detected - VF isolation not available\n");
686 } else {
687 switch (fw_ver.major) {
688 case 1 ... 5:
689 stride = 4;
690 break;
691 default:
692 nfp_err(pf->cpp, "Unsupported Firmware ABI %d.%d.%d.%d\n",
693 fw_ver.resv, fw_ver.class,
694 fw_ver.major, fw_ver.minor);
695 err = -EINVAL;
696 goto err_unmap;
697 }
698 }
699
700 err = nfp_net_pf_app_init(pf, qc_bar, stride);
701 if (err)
702 goto err_unmap;
703
704 err = devlink_register(devlink, &pf->pdev->dev);
705 if (err)
706 goto err_app_clean;
707
708 err = nfp_shared_buf_register(pf);
709 if (err)
710 goto err_devlink_unreg;
711
712 err = nfp_devlink_params_register(pf);
713 if (err)
714 goto err_shared_buf_unreg;
715
716 mutex_lock(&pf->lock);
717 pf->ddir = nfp_net_debugfs_device_add(pf->pdev);
718
719 /* Allocate the vnics and do basic init */
720 err = nfp_net_pf_alloc_vnics(pf, ctrl_bar, qc_bar, stride);
721 if (err)
722 goto err_clean_ddir;
723
724 err = nfp_net_pf_alloc_irqs(pf);
725 if (err)
726 goto err_free_vnics;
727
728 err = nfp_net_pf_app_start(pf);
729 if (err)
730 goto err_free_irqs;
731
732 err = nfp_net_pf_init_vnics(pf);
733 if (err)
734 goto err_stop_app;
735
736 mutex_unlock(&pf->lock);
737
738 return 0;
739
740 err_stop_app:
741 nfp_net_pf_app_stop(pf);
742 err_free_irqs:
743 nfp_net_pf_free_irqs(pf);
744 err_free_vnics:
745 nfp_net_pf_free_vnics(pf);
746 err_clean_ddir:
747 nfp_net_debugfs_dir_clean(&pf->ddir);
748 mutex_unlock(&pf->lock);
749 nfp_devlink_params_unregister(pf);
750 err_shared_buf_unreg:
751 nfp_shared_buf_unregister(pf);
752 err_devlink_unreg:
753 cancel_work_sync(&pf->port_refresh_work);
754 devlink_unregister(devlink);
755 err_app_clean:
756 nfp_net_pf_app_clean(pf);
757 err_unmap:
758 nfp_net_pci_unmap_mem(pf);
759 return err;
760 }
761
762 void nfp_net_pci_remove(struct nfp_pf *pf)
763 {
764 struct nfp_net *nn, *next;
765
766 mutex_lock(&pf->lock);
767 list_for_each_entry_safe(nn, next, &pf->vnics, vnic_list) {
768 if (!nfp_net_is_data_vnic(nn))
769 continue;
770 nfp_net_pf_clean_vnic(pf, nn);
771 nfp_net_pf_free_vnic(pf, nn);
772 }
773
774 nfp_net_pf_app_stop(pf);
775 /* stop app first, to avoid double free of ctrl vNIC's ddir */
776 nfp_net_debugfs_dir_clean(&pf->ddir);
777
778 mutex_unlock(&pf->lock);
779
780 nfp_devlink_params_unregister(pf);
781 nfp_shared_buf_unregister(pf);
782 devlink_unregister(priv_to_devlink(pf));
783
784 nfp_net_pf_free_irqs(pf);
785 nfp_net_pf_app_clean(pf);
786 nfp_net_pci_unmap_mem(pf);
787
788 cancel_work_sync(&pf->port_refresh_work);
789 }
Linux with added FPC-III support