1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 /* Copyright (C) 2015-2018 Netronome Systems, Inc. */
3
4 /*
5 * nfp_main.c
6 * Authors: Jakub Kicinski <jakub.kicinski@netronome.com>
7 * Alejandro Lucero <alejandro.lucero@netronome.com>
8 * Jason McMullan <jason.mcmullan@netronome.com>
9 * Rolf Neugebauer <rolf.neugebauer@netronome.com>
10 */
11
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/mutex.h>
15 #include <linux/pci.h>
16 #include <linux/firmware.h>
17 #include <linux/vermagic.h>
18 #include <linux/vmalloc.h>
19 #include <net/devlink.h>
20
21 #include "nfpcore/nfp.h"
22 #include "nfpcore/nfp_cpp.h"
23 #include "nfpcore/nfp_nffw.h"
24 #include "nfpcore/nfp_nsp.h"
25
26 #include "nfpcore/nfp6000_pcie.h"
27
28 #include "nfp_abi.h"
29 #include "nfp_app.h"
30 #include "nfp_main.h"
31 #include "nfp_net.h"
32
33 static const char nfp_driver_name[] = "nfp";
34 const char nfp_driver_version[] = VERMAGIC_STRING;
35
36 static const struct pci_device_id nfp_pci_device_ids[] = {
37 { PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000,
38 PCI_VENDOR_ID_NETRONOME, PCI_ANY_ID,
39 PCI_ANY_ID, 0,
40 },
41 { PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP5000,
42 PCI_VENDOR_ID_NETRONOME, PCI_ANY_ID,
43 PCI_ANY_ID, 0,
44 },
45 { PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP4000,
46 PCI_VENDOR_ID_NETRONOME, PCI_ANY_ID,
47 PCI_ANY_ID, 0,
48 },
49 { 0, } /* Required last entry. */
50 };
51 MODULE_DEVICE_TABLE(pci, nfp_pci_device_ids);
52
nfp_pf_rtsym_read_optional(struct nfp_pf * pf,const char * format,unsigned int default_val)53 int nfp_pf_rtsym_read_optional(struct nfp_pf *pf, const char *format,
54 unsigned int default_val)
55 {
56 char name[256];
57 int err = 0;
58 u64 val;
59
60 snprintf(name, sizeof(name), format, nfp_cppcore_pcie_unit(pf->cpp));
61
62 val = nfp_rtsym_read_le(pf->rtbl, name, &err);
63 if (err) {
64 if (err == -ENOENT)
65 return default_val;
66 nfp_err(pf->cpp, "Unable to read symbol %s\n", name);
67 return err;
68 }
69
70 return val;
71 }
72
73 u8 __iomem *
nfp_pf_map_rtsym(struct nfp_pf * pf,const char * name,const char * sym_fmt,unsigned int min_size,struct nfp_cpp_area ** area)74 nfp_pf_map_rtsym(struct nfp_pf *pf, const char *name, const char *sym_fmt,
75 unsigned int min_size, struct nfp_cpp_area **area)
76 {
77 char pf_symbol[256];
78
79 snprintf(pf_symbol, sizeof(pf_symbol), sym_fmt,
80 nfp_cppcore_pcie_unit(pf->cpp));
81
82 return nfp_rtsym_map(pf->rtbl, pf_symbol, name, min_size, area);
83 }
84
85 /* Callers should hold the devlink instance lock */
nfp_mbox_cmd(struct nfp_pf * pf,u32 cmd,void * in_data,u64 in_length,void * out_data,u64 out_length)86 int nfp_mbox_cmd(struct nfp_pf *pf, u32 cmd, void *in_data, u64 in_length,
87 void *out_data, u64 out_length)
88 {
89 unsigned long err_at;
90 u64 max_data_sz;
91 u32 val = 0;
92 int n, err;
93
94 if (!pf->mbox)
95 return -EOPNOTSUPP;
96
97 max_data_sz = nfp_rtsym_size(pf->mbox) - NFP_MBOX_SYM_MIN_SIZE;
98
99 /* Check if cmd field is clear */
100 err = nfp_rtsym_readl(pf->cpp, pf->mbox, NFP_MBOX_CMD, &val);
101 if (err || val) {
102 nfp_warn(pf->cpp, "failed to issue command (%u): %u, err: %d\n",
103 cmd, val, err);
104 return err ?: -EBUSY;
105 }
106
107 in_length = min(in_length, max_data_sz);
108 n = nfp_rtsym_write(pf->cpp, pf->mbox, NFP_MBOX_DATA, in_data,
109 in_length);
110 if (n != in_length)
111 return -EIO;
112 /* Write data_len and wipe reserved */
113 err = nfp_rtsym_writeq(pf->cpp, pf->mbox, NFP_MBOX_DATA_LEN, in_length);
114 if (err)
115 return err;
116
117 /* Read back for ordering */
118 err = nfp_rtsym_readl(pf->cpp, pf->mbox, NFP_MBOX_DATA_LEN, &val);
119 if (err)
120 return err;
121
122 /* Write cmd and wipe return value */
123 err = nfp_rtsym_writeq(pf->cpp, pf->mbox, NFP_MBOX_CMD, cmd);
124 if (err)
125 return err;
126
127 err_at = jiffies + 5 * HZ;
128 while (true) {
129 /* Wait for command to go to 0 (NFP_MBOX_NO_CMD) */
130 err = nfp_rtsym_readl(pf->cpp, pf->mbox, NFP_MBOX_CMD, &val);
131 if (err)
132 return err;
133 if (!val)
134 break;
135
136 if (time_is_before_eq_jiffies(err_at))
137 return -ETIMEDOUT;
138
139 msleep(5);
140 }
141
142 /* Copy output if any (could be error info, do it before reading ret) */
143 err = nfp_rtsym_readl(pf->cpp, pf->mbox, NFP_MBOX_DATA_LEN, &val);
144 if (err)
145 return err;
146
147 out_length = min_t(u32, val, min(out_length, max_data_sz));
148 n = nfp_rtsym_read(pf->cpp, pf->mbox, NFP_MBOX_DATA,
149 out_data, out_length);
150 if (n != out_length)
151 return -EIO;
152
153 /* Check if there is an error */
154 err = nfp_rtsym_readl(pf->cpp, pf->mbox, NFP_MBOX_RET, &val);
155 if (err)
156 return err;
157 if (val)
158 return -val;
159
160 return out_length;
161 }
162
nfp_board_ready(struct nfp_pf * pf)163 static bool nfp_board_ready(struct nfp_pf *pf)
164 {
165 const char *cp;
166 long state;
167 int err;
168
169 cp = nfp_hwinfo_lookup(pf->hwinfo, "board.state");
170 if (!cp)
171 return false;
172
173 err = kstrtol(cp, 0, &state);
174 if (err < 0)
175 return false;
176
177 return state == 15;
178 }
179
nfp_pf_board_state_wait(struct nfp_pf * pf)180 static int nfp_pf_board_state_wait(struct nfp_pf *pf)
181 {
182 const unsigned long wait_until = jiffies + 10 * HZ;
183
184 while (!nfp_board_ready(pf)) {
185 if (time_is_before_eq_jiffies(wait_until)) {
186 nfp_err(pf->cpp, "NFP board initialization timeout\n");
187 return -EINVAL;
188 }
189
190 nfp_info(pf->cpp, "waiting for board initialization\n");
191 if (msleep_interruptible(500))
192 return -ERESTARTSYS;
193
194 /* Refresh cached information */
195 kfree(pf->hwinfo);
196 pf->hwinfo = nfp_hwinfo_read(pf->cpp);
197 }
198
199 return 0;
200 }
201
nfp_pcie_sriov_read_nfd_limit(struct nfp_pf * pf)202 static int nfp_pcie_sriov_read_nfd_limit(struct nfp_pf *pf)
203 {
204 int err;
205
206 pf->limit_vfs = nfp_rtsym_read_le(pf->rtbl, "nfd_vf_cfg_max_vfs", &err);
207 if (err) {
208 /* For backwards compatibility if symbol not found allow all */
209 pf->limit_vfs = ~0;
210 if (err == -ENOENT)
211 return 0;
212
213 nfp_warn(pf->cpp, "Warning: VF limit read failed: %d\n", err);
214 return err;
215 }
216
217 err = pci_sriov_set_totalvfs(pf->pdev, pf->limit_vfs);
218 if (err)
219 nfp_warn(pf->cpp, "Failed to set VF count in sysfs: %d\n", err);
220 return 0;
221 }
222
nfp_pcie_sriov_enable(struct pci_dev * pdev,int num_vfs)223 static int nfp_pcie_sriov_enable(struct pci_dev *pdev, int num_vfs)
224 {
225 #ifdef CONFIG_PCI_IOV
226 struct nfp_pf *pf = pci_get_drvdata(pdev);
227 int err;
228
229 if (num_vfs > pf->limit_vfs) {
230 nfp_info(pf->cpp, "Firmware limits number of VFs to %u\n",
231 pf->limit_vfs);
232 return -EINVAL;
233 }
234
235 err = pci_enable_sriov(pdev, num_vfs);
236 if (err) {
237 dev_warn(&pdev->dev, "Failed to enable PCI SR-IOV: %d\n", err);
238 return err;
239 }
240
241 mutex_lock(&pf->lock);
242
243 err = nfp_app_sriov_enable(pf->app, num_vfs);
244 if (err) {
245 dev_warn(&pdev->dev,
246 "App specific PCI SR-IOV configuration failed: %d\n",
247 err);
248 goto err_sriov_disable;
249 }
250
251 pf->num_vfs = num_vfs;
252
253 dev_dbg(&pdev->dev, "Created %d VFs.\n", pf->num_vfs);
254
255 mutex_unlock(&pf->lock);
256 return num_vfs;
257
258 err_sriov_disable:
259 mutex_unlock(&pf->lock);
260 pci_disable_sriov(pdev);
261 return err;
262 #endif
263 return 0;
264 }
265
nfp_pcie_sriov_disable(struct pci_dev * pdev)266 static int nfp_pcie_sriov_disable(struct pci_dev *pdev)
267 {
268 #ifdef CONFIG_PCI_IOV
269 struct nfp_pf *pf = pci_get_drvdata(pdev);
270
271 mutex_lock(&pf->lock);
272
273 /* If the VFs are assigned we cannot shut down SR-IOV without
274 * causing issues, so just leave the hardware available but
275 * disabled
276 */
277 if (pci_vfs_assigned(pdev)) {
278 dev_warn(&pdev->dev, "Disabling while VFs assigned - VFs will not be deallocated\n");
279 mutex_unlock(&pf->lock);
280 return -EPERM;
281 }
282
283 nfp_app_sriov_disable(pf->app);
284
285 pf->num_vfs = 0;
286
287 mutex_unlock(&pf->lock);
288
289 pci_disable_sriov(pdev);
290 dev_dbg(&pdev->dev, "Removed VFs.\n");
291 #endif
292 return 0;
293 }
294
nfp_pcie_sriov_configure(struct pci_dev * pdev,int num_vfs)295 static int nfp_pcie_sriov_configure(struct pci_dev *pdev, int num_vfs)
296 {
297 if (!pci_get_drvdata(pdev))
298 return -ENOENT;
299
300 if (num_vfs == 0)
301 return nfp_pcie_sriov_disable(pdev);
302 else
303 return nfp_pcie_sriov_enable(pdev, num_vfs);
304 }
305
nfp_flash_update_common(struct nfp_pf * pf,const char * path,struct netlink_ext_ack * extack)306 int nfp_flash_update_common(struct nfp_pf *pf, const char *path,
307 struct netlink_ext_ack *extack)
308 {
309 struct device *dev = &pf->pdev->dev;
310 const struct firmware *fw;
311 struct nfp_nsp *nsp;
312 int err;
313
314 nsp = nfp_nsp_open(pf->cpp);
315 if (IS_ERR(nsp)) {
316 err = PTR_ERR(nsp);
317 if (extack)
318 NL_SET_ERR_MSG_MOD(extack, "can't access NSP");
319 else
320 dev_err(dev, "Failed to access the NSP: %d\n", err);
321 return err;
322 }
323
324 err = request_firmware_direct(&fw, path, dev);
325 if (err) {
326 NL_SET_ERR_MSG_MOD(extack,
327 "unable to read flash file from disk");
328 goto exit_close_nsp;
329 }
330
331 dev_info(dev, "Please be patient while writing flash image: %s\n",
332 path);
333
334 err = nfp_nsp_write_flash(nsp, fw);
335 if (err < 0)
336 goto exit_release_fw;
337 dev_info(dev, "Finished writing flash image\n");
338 err = 0;
339
340 exit_release_fw:
341 release_firmware(fw);
342 exit_close_nsp:
343 nfp_nsp_close(nsp);
344 return err;
345 }
346
347 static const struct firmware *
nfp_net_fw_request(struct pci_dev * pdev,struct nfp_pf * pf,const char * name)348 nfp_net_fw_request(struct pci_dev *pdev, struct nfp_pf *pf, const char *name)
349 {
350 const struct firmware *fw = NULL;
351 int err;
352
353 err = request_firmware_direct(&fw, name, &pdev->dev);
354 nfp_info(pf->cpp, " %s: %s\n",
355 name, err ? "not found" : "found");
356 if (err)
357 return NULL;
358
359 return fw;
360 }
361
362 /**
363 * nfp_net_fw_find() - Find the correct firmware image for netdev mode
364 * @pdev: PCI Device structure
365 * @pf: NFP PF Device structure
366 *
367 * Return: firmware if found and requested successfully.
368 */
369 static const struct firmware *
nfp_net_fw_find(struct pci_dev * pdev,struct nfp_pf * pf)370 nfp_net_fw_find(struct pci_dev *pdev, struct nfp_pf *pf)
371 {
372 struct nfp_eth_table_port *port;
373 const struct firmware *fw;
374 const char *fw_model;
375 char fw_name[256];
376 const u8 *serial;
377 u16 interface;
378 int spc, i, j;
379
380 nfp_info(pf->cpp, "Looking for firmware file in order of priority:\n");
381
382 /* First try to find a firmware image specific for this device */
383 interface = nfp_cpp_interface(pf->cpp);
384 nfp_cpp_serial(pf->cpp, &serial);
385 sprintf(fw_name, "netronome/serial-%pMF-%02hhx-%02hhx.nffw",
386 serial, interface >> 8, interface & 0xff);
387 fw = nfp_net_fw_request(pdev, pf, fw_name);
388 if (fw)
389 return fw;
390
391 /* Then try the PCI name */
392 sprintf(fw_name, "netronome/pci-%s.nffw", pci_name(pdev));
393 fw = nfp_net_fw_request(pdev, pf, fw_name);
394 if (fw)
395 return fw;
396
397 /* Finally try the card type and media */
398 if (!pf->eth_tbl) {
399 dev_err(&pdev->dev, "Error: can't identify media config\n");
400 return NULL;
401 }
402
403 fw_model = nfp_hwinfo_lookup(pf->hwinfo, "assembly.partno");
404 if (!fw_model) {
405 dev_err(&pdev->dev, "Error: can't read part number\n");
406 return NULL;
407 }
408
409 spc = ARRAY_SIZE(fw_name);
410 spc -= snprintf(fw_name, spc, "netronome/nic_%s", fw_model);
411
412 for (i = 0; spc > 0 && i < pf->eth_tbl->count; i += j) {
413 port = &pf->eth_tbl->ports[i];
414 j = 1;
415 while (i + j < pf->eth_tbl->count &&
416 port->speed == port[j].speed)
417 j++;
418
419 spc -= snprintf(&fw_name[ARRAY_SIZE(fw_name) - spc], spc,
420 "_%dx%d", j, port->speed / 1000);
421 }
422
423 if (spc <= 0)
424 return NULL;
425
426 spc -= snprintf(&fw_name[ARRAY_SIZE(fw_name) - spc], spc, ".nffw");
427 if (spc <= 0)
428 return NULL;
429
430 return nfp_net_fw_request(pdev, pf, fw_name);
431 }
432
433 static int
nfp_get_fw_policy_value(struct pci_dev * pdev,struct nfp_nsp * nsp,const char * key,const char * default_val,int max_val,int * value)434 nfp_get_fw_policy_value(struct pci_dev *pdev, struct nfp_nsp *nsp,
435 const char *key, const char *default_val, int max_val,
436 int *value)
437 {
438 char hwinfo[64];
439 long hi_val;
440 int err;
441
442 snprintf(hwinfo, sizeof(hwinfo), key);
443 err = nfp_nsp_hwinfo_lookup_optional(nsp, hwinfo, sizeof(hwinfo),
444 default_val);
445 if (err)
446 return err;
447
448 err = kstrtol(hwinfo, 0, &hi_val);
449 if (err || hi_val < 0 || hi_val > max_val) {
450 dev_warn(&pdev->dev,
451 "Invalid value '%s' from '%s', ignoring\n",
452 hwinfo, key);
453 err = kstrtol(default_val, 0, &hi_val);
454 }
455
456 *value = hi_val;
457 return err;
458 }
459
460 /**
461 * nfp_fw_load() - Load the firmware image
462 * @pdev: PCI Device structure
463 * @pf: NFP PF Device structure
464 * @nsp: NFP SP handle
465 *
466 * Return: -ERRNO, 0 for no firmware loaded, 1 for firmware loaded
467 */
468 static int
nfp_fw_load(struct pci_dev * pdev,struct nfp_pf * pf,struct nfp_nsp * nsp)469 nfp_fw_load(struct pci_dev *pdev, struct nfp_pf *pf, struct nfp_nsp *nsp)
470 {
471 bool do_reset, fw_loaded = false;
472 const struct firmware *fw = NULL;
473 int err, reset, policy, ifcs = 0;
474 char *token, *ptr;
475 char hwinfo[64];
476 u16 interface;
477
478 snprintf(hwinfo, sizeof(hwinfo), "abi_drv_load_ifc");
479 err = nfp_nsp_hwinfo_lookup_optional(nsp, hwinfo, sizeof(hwinfo),
480 NFP_NSP_DRV_LOAD_IFC_DEFAULT);
481 if (err)
482 return err;
483
484 interface = nfp_cpp_interface(pf->cpp);
485 ptr = hwinfo;
486 while ((token = strsep(&ptr, ","))) {
487 unsigned long interface_hi;
488
489 err = kstrtoul(token, 0, &interface_hi);
490 if (err) {
491 dev_err(&pdev->dev,
492 "Failed to parse interface '%s': %d\n",
493 token, err);
494 return err;
495 }
496
497 ifcs++;
498 if (interface == interface_hi)
499 break;
500 }
501
502 if (!token) {
503 dev_info(&pdev->dev, "Firmware will be loaded by partner\n");
504 return 0;
505 }
506
507 err = nfp_get_fw_policy_value(pdev, nsp, "abi_drv_reset",
508 NFP_NSP_DRV_RESET_DEFAULT,
509 NFP_NSP_DRV_RESET_NEVER, &reset);
510 if (err)
511 return err;
512
513 err = nfp_get_fw_policy_value(pdev, nsp, "app_fw_from_flash",
514 NFP_NSP_APP_FW_LOAD_DEFAULT,
515 NFP_NSP_APP_FW_LOAD_PREF, &policy);
516 if (err)
517 return err;
518
519 fw = nfp_net_fw_find(pdev, pf);
520 do_reset = reset == NFP_NSP_DRV_RESET_ALWAYS ||
521 (fw && reset == NFP_NSP_DRV_RESET_DISK);
522
523 if (do_reset) {
524 dev_info(&pdev->dev, "Soft-resetting the NFP\n");
525 err = nfp_nsp_device_soft_reset(nsp);
526 if (err < 0) {
527 dev_err(&pdev->dev,
528 "Failed to soft reset the NFP: %d\n", err);
529 goto exit_release_fw;
530 }
531 }
532
533 if (fw && policy != NFP_NSP_APP_FW_LOAD_FLASH) {
534 if (nfp_nsp_has_fw_loaded(nsp) && nfp_nsp_fw_loaded(nsp))
535 goto exit_release_fw;
536
537 err = nfp_nsp_load_fw(nsp, fw);
538 if (err < 0) {
539 dev_err(&pdev->dev, "FW loading failed: %d\n",
540 err);
541 goto exit_release_fw;
542 }
543 dev_info(&pdev->dev, "Finished loading FW image\n");
544 fw_loaded = true;
545 } else if (policy != NFP_NSP_APP_FW_LOAD_DISK &&
546 nfp_nsp_has_stored_fw_load(nsp)) {
547
548 /* Don't propagate this error to stick with legacy driver
549 * behavior, failure will be detected later during init.
550 */
551 if (!nfp_nsp_load_stored_fw(nsp))
552 dev_info(&pdev->dev, "Finished loading stored FW image\n");
553
554 /* Don't flag the fw_loaded in this case since other devices
555 * may reuse the firmware when configured this way
556 */
557 } else {
558 dev_warn(&pdev->dev, "Didn't load firmware, please update flash or reconfigure card\n");
559 }
560
561 exit_release_fw:
562 release_firmware(fw);
563
564 /* We don't want to unload firmware when other devices may still be
565 * dependent on it, which could be the case if there are multiple
566 * devices that could load firmware.
567 */
568 if (fw_loaded && ifcs == 1)
569 pf->unload_fw_on_remove = true;
570
571 return err < 0 ? err : fw_loaded;
572 }
573
574 static void
nfp_nsp_init_ports(struct pci_dev * pdev,struct nfp_pf * pf,struct nfp_nsp * nsp)575 nfp_nsp_init_ports(struct pci_dev *pdev, struct nfp_pf *pf,
576 struct nfp_nsp *nsp)
577 {
578 bool needs_reinit = false;
579 int i;
580
581 pf->eth_tbl = __nfp_eth_read_ports(pf->cpp, nsp);
582 if (!pf->eth_tbl)
583 return;
584
585 if (!nfp_nsp_has_mac_reinit(nsp))
586 return;
587
588 for (i = 0; i < pf->eth_tbl->count; i++)
589 needs_reinit |= pf->eth_tbl->ports[i].override_changed;
590 if (!needs_reinit)
591 return;
592
593 kfree(pf->eth_tbl);
594 if (nfp_nsp_mac_reinit(nsp))
595 dev_warn(&pdev->dev, "MAC reinit failed\n");
596
597 pf->eth_tbl = __nfp_eth_read_ports(pf->cpp, nsp);
598 }
599
nfp_nsp_init(struct pci_dev * pdev,struct nfp_pf * pf)600 static int nfp_nsp_init(struct pci_dev *pdev, struct nfp_pf *pf)
601 {
602 struct nfp_nsp *nsp;
603 int err;
604
605 err = nfp_resource_wait(pf->cpp, NFP_RESOURCE_NSP, 30);
606 if (err)
607 return err;
608
609 nsp = nfp_nsp_open(pf->cpp);
610 if (IS_ERR(nsp)) {
611 err = PTR_ERR(nsp);
612 dev_err(&pdev->dev, "Failed to access the NSP: %d\n", err);
613 return err;
614 }
615
616 err = nfp_nsp_wait(nsp);
617 if (err < 0)
618 goto exit_close_nsp;
619
620 nfp_nsp_init_ports(pdev, pf, nsp);
621
622 pf->nspi = __nfp_nsp_identify(nsp);
623 if (pf->nspi)
624 dev_info(&pdev->dev, "BSP: %s\n", pf->nspi->version);
625
626 err = nfp_fw_load(pdev, pf, nsp);
627 if (err < 0) {
628 kfree(pf->nspi);
629 kfree(pf->eth_tbl);
630 dev_err(&pdev->dev, "Failed to load FW\n");
631 goto exit_close_nsp;
632 }
633
634 pf->fw_loaded = !!err;
635 err = 0;
636
637 exit_close_nsp:
638 nfp_nsp_close(nsp);
639
640 return err;
641 }
642
nfp_fw_unload(struct nfp_pf * pf)643 static void nfp_fw_unload(struct nfp_pf *pf)
644 {
645 struct nfp_nsp *nsp;
646 int err;
647
648 nsp = nfp_nsp_open(pf->cpp);
649 if (IS_ERR(nsp)) {
650 nfp_err(pf->cpp, "Reset failed, can't open NSP\n");
651 return;
652 }
653
654 err = nfp_nsp_device_soft_reset(nsp);
655 if (err < 0)
656 dev_warn(&pf->pdev->dev, "Couldn't unload firmware: %d\n", err);
657 else
658 dev_info(&pf->pdev->dev, "Firmware safely unloaded\n");
659
660 nfp_nsp_close(nsp);
661 }
662
nfp_pf_find_rtsyms(struct nfp_pf * pf)663 static int nfp_pf_find_rtsyms(struct nfp_pf *pf)
664 {
665 char pf_symbol[256];
666 unsigned int pf_id;
667
668 pf_id = nfp_cppcore_pcie_unit(pf->cpp);
669
670 /* Optional per-PCI PF mailbox */
671 snprintf(pf_symbol, sizeof(pf_symbol), NFP_MBOX_SYM_NAME, pf_id);
672 pf->mbox = nfp_rtsym_lookup(pf->rtbl, pf_symbol);
673 if (pf->mbox && nfp_rtsym_size(pf->mbox) < NFP_MBOX_SYM_MIN_SIZE) {
674 nfp_err(pf->cpp, "PF mailbox symbol too small: %llu < %d\n",
675 nfp_rtsym_size(pf->mbox), NFP_MBOX_SYM_MIN_SIZE);
676 return -EINVAL;
677 }
678
679 return 0;
680 }
681
nfp_pci_probe(struct pci_dev * pdev,const struct pci_device_id * pci_id)682 static int nfp_pci_probe(struct pci_dev *pdev,
683 const struct pci_device_id *pci_id)
684 {
685 struct devlink *devlink;
686 struct nfp_pf *pf;
687 int err;
688
689 if (pdev->vendor == PCI_VENDOR_ID_NETRONOME &&
690 pdev->device == PCI_DEVICE_ID_NETRONOME_NFP6000_VF)
691 dev_warn(&pdev->dev, "Binding NFP VF device to the NFP PF driver, the VF driver is called 'nfp_netvf'\n");
692
693 err = pci_enable_device(pdev);
694 if (err < 0)
695 return err;
696
697 pci_set_master(pdev);
698
699 err = dma_set_mask_and_coherent(&pdev->dev,
700 DMA_BIT_MASK(NFP_NET_MAX_DMA_BITS));
701 if (err)
702 goto err_pci_disable;
703
704 err = pci_request_regions(pdev, nfp_driver_name);
705 if (err < 0) {
706 dev_err(&pdev->dev, "Unable to reserve pci resources.\n");
707 goto err_pci_disable;
708 }
709
710 devlink = devlink_alloc(&nfp_devlink_ops, sizeof(*pf));
711 if (!devlink) {
712 err = -ENOMEM;
713 goto err_rel_regions;
714 }
715 pf = devlink_priv(devlink);
716 INIT_LIST_HEAD(&pf->vnics);
717 INIT_LIST_HEAD(&pf->ports);
718 mutex_init(&pf->lock);
719 pci_set_drvdata(pdev, pf);
720 pf->pdev = pdev;
721
722 pf->wq = alloc_workqueue("nfp-%s", 0, 2, pci_name(pdev));
723 if (!pf->wq) {
724 err = -ENOMEM;
725 goto err_pci_priv_unset;
726 }
727
728 pf->cpp = nfp_cpp_from_nfp6000_pcie(pdev);
729 if (IS_ERR_OR_NULL(pf->cpp)) {
730 err = PTR_ERR(pf->cpp);
731 if (err >= 0)
732 err = -ENOMEM;
733 goto err_disable_msix;
734 }
735
736 err = nfp_resource_table_init(pf->cpp);
737 if (err)
738 goto err_cpp_free;
739
740 pf->hwinfo = nfp_hwinfo_read(pf->cpp);
741
742 dev_info(&pdev->dev, "Assembly: %s%s%s-%s CPLD: %s\n",
743 nfp_hwinfo_lookup(pf->hwinfo, "assembly.vendor"),
744 nfp_hwinfo_lookup(pf->hwinfo, "assembly.partno"),
745 nfp_hwinfo_lookup(pf->hwinfo, "assembly.serial"),
746 nfp_hwinfo_lookup(pf->hwinfo, "assembly.revision"),
747 nfp_hwinfo_lookup(pf->hwinfo, "cpld.version"));
748
749 err = nfp_pf_board_state_wait(pf);
750 if (err)
751 goto err_hwinfo_free;
752
753 err = nfp_nsp_init(pdev, pf);
754 if (err)
755 goto err_hwinfo_free;
756
757 pf->mip = nfp_mip_open(pf->cpp);
758 pf->rtbl = __nfp_rtsym_table_read(pf->cpp, pf->mip);
759
760 err = nfp_pf_find_rtsyms(pf);
761 if (err)
762 goto err_fw_unload;
763
764 pf->dump_flag = NFP_DUMP_NSP_DIAG;
765 pf->dumpspec = nfp_net_dump_load_dumpspec(pf->cpp, pf->rtbl);
766
767 err = nfp_pcie_sriov_read_nfd_limit(pf);
768 if (err)
769 goto err_fw_unload;
770
771 pf->num_vfs = pci_num_vf(pdev);
772 if (pf->num_vfs > pf->limit_vfs) {
773 dev_err(&pdev->dev,
774 "Error: %d VFs already enabled, but loaded FW can only support %d\n",
775 pf->num_vfs, pf->limit_vfs);
776 err = -EINVAL;
777 goto err_fw_unload;
778 }
779
780 err = nfp_net_pci_probe(pf);
781 if (err)
782 goto err_fw_unload;
783
784 err = nfp_hwmon_register(pf);
785 if (err) {
786 dev_err(&pdev->dev, "Failed to register hwmon info\n");
787 goto err_net_remove;
788 }
789
790 return 0;
791
792 err_net_remove:
793 nfp_net_pci_remove(pf);
794 err_fw_unload:
795 kfree(pf->rtbl);
796 nfp_mip_close(pf->mip);
797 if (pf->unload_fw_on_remove)
798 nfp_fw_unload(pf);
799 kfree(pf->eth_tbl);
800 kfree(pf->nspi);
801 vfree(pf->dumpspec);
802 err_hwinfo_free:
803 kfree(pf->hwinfo);
804 err_cpp_free:
805 nfp_cpp_free(pf->cpp);
806 err_disable_msix:
807 destroy_workqueue(pf->wq);
808 err_pci_priv_unset:
809 pci_set_drvdata(pdev, NULL);
810 mutex_destroy(&pf->lock);
811 devlink_free(devlink);
812 err_rel_regions:
813 pci_release_regions(pdev);
814 err_pci_disable:
815 pci_disable_device(pdev);
816
817 return err;
818 }
819
__nfp_pci_shutdown(struct pci_dev * pdev,bool unload_fw)820 static void __nfp_pci_shutdown(struct pci_dev *pdev, bool unload_fw)
821 {
822 struct nfp_pf *pf;
823
824 pf = pci_get_drvdata(pdev);
825 if (!pf)
826 return;
827
828 nfp_hwmon_unregister(pf);
829
830 nfp_pcie_sriov_disable(pdev);
831
832 nfp_net_pci_remove(pf);
833
834 vfree(pf->dumpspec);
835 kfree(pf->rtbl);
836 nfp_mip_close(pf->mip);
837 if (unload_fw && pf->unload_fw_on_remove)
838 nfp_fw_unload(pf);
839
840 destroy_workqueue(pf->wq);
841 pci_set_drvdata(pdev, NULL);
842 kfree(pf->hwinfo);
843 nfp_cpp_free(pf->cpp);
844
845 kfree(pf->eth_tbl);
846 kfree(pf->nspi);
847 mutex_destroy(&pf->lock);
848 devlink_free(priv_to_devlink(pf));
849 pci_release_regions(pdev);
850 pci_disable_device(pdev);
851 }
852
nfp_pci_remove(struct pci_dev * pdev)853 static void nfp_pci_remove(struct pci_dev *pdev)
854 {
855 __nfp_pci_shutdown(pdev, true);
856 }
857
nfp_pci_shutdown(struct pci_dev * pdev)858 static void nfp_pci_shutdown(struct pci_dev *pdev)
859 {
860 __nfp_pci_shutdown(pdev, false);
861 }
862
863 static struct pci_driver nfp_pci_driver = {
864 .name = nfp_driver_name,
865 .id_table = nfp_pci_device_ids,
866 .probe = nfp_pci_probe,
867 .remove = nfp_pci_remove,
868 .shutdown = nfp_pci_shutdown,
869 .sriov_configure = nfp_pcie_sriov_configure,
870 };
871
nfp_main_init(void)872 static int __init nfp_main_init(void)
873 {
874 int err;
875
876 pr_info("%s: NFP PCIe Driver, Copyright (C) 2014-2017 Netronome Systems\n",
877 nfp_driver_name);
878
879 nfp_net_debugfs_create();
880
881 err = pci_register_driver(&nfp_pci_driver);
882 if (err < 0)
883 goto err_destroy_debugfs;
884
885 err = pci_register_driver(&nfp_netvf_pci_driver);
886 if (err)
887 goto err_unreg_pf;
888
889 return err;
890
891 err_unreg_pf:
892 pci_unregister_driver(&nfp_pci_driver);
893 err_destroy_debugfs:
894 nfp_net_debugfs_destroy();
895 return err;
896 }
897
nfp_main_exit(void)898 static void __exit nfp_main_exit(void)
899 {
900 pci_unregister_driver(&nfp_netvf_pci_driver);
901 pci_unregister_driver(&nfp_pci_driver);
902 nfp_net_debugfs_destroy();
903 }
904
905 module_init(nfp_main_init);
906 module_exit(nfp_main_exit);
907
908 MODULE_FIRMWARE("netronome/nic_AMDA0058-0011_2x40.nffw");
909 MODULE_FIRMWARE("netronome/nic_AMDA0058-0012_2x40.nffw");
910 MODULE_FIRMWARE("netronome/nic_AMDA0081-0001_1x40.nffw");
911 MODULE_FIRMWARE("netronome/nic_AMDA0081-0001_4x10.nffw");
912 MODULE_FIRMWARE("netronome/nic_AMDA0096-0001_2x10.nffw");
913 MODULE_FIRMWARE("netronome/nic_AMDA0097-0001_2x40.nffw");
914 MODULE_FIRMWARE("netronome/nic_AMDA0097-0001_4x10_1x40.nffw");
915 MODULE_FIRMWARE("netronome/nic_AMDA0097-0001_8x10.nffw");
916 MODULE_FIRMWARE("netronome/nic_AMDA0099-0001_2x10.nffw");
917 MODULE_FIRMWARE("netronome/nic_AMDA0099-0001_2x25.nffw");
918 MODULE_FIRMWARE("netronome/nic_AMDA0099-0001_1x10_1x25.nffw");
919
920 MODULE_AUTHOR("Netronome Systems <oss-drivers@netronome.com>");
921 MODULE_LICENSE("GPL");
922 MODULE_DESCRIPTION("The Netronome Flow Processor (NFP) driver.");
923 MODULE_VERSION(UTS_RELEASE);
924
