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2024-05-11 297b60346df8beafee954a0fd7c2d64f33f3b9bc 
 kernel/drivers/net/ethernet/netronome/nfp/nfp_main.c
....@@ -1,35 +1,5 @@
1
-/*
2
- * Copyright (C) 2015-2017 Netronome Systems, Inc.
3
- *
4
- * This software is dual licensed under the GNU General License Version 2,
5
- * June 1991 as shown in the file COPYING in the top-level directory of this
6
- * source tree or the BSD 2-Clause License provided below.  You have the
7
- * option to license this software under the complete terms of either license.
8
- *
9
- * The BSD 2-Clause License:
10
- *
11
- *     Redistribution and use in source and binary forms, with or
12
- *     without modification, are permitted provided that the following
13
- *     conditions are met:
14
- *
15
- *      1. Redistributions of source code must retain the above
16
- *         copyright notice, this list of conditions and the following
17
- *         disclaimer.
18
- *
19
- *      2. Redistributions in binary form must reproduce the above
20
- *         copyright notice, this list of conditions and the following
21
- *         disclaimer in the documentation and/or other materials
22
- *         provided with the distribution.
23
- *
24
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31
- * SOFTWARE.
32
- */
1
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2
+/* Copyright (C) 2015-2018 Netronome Systems, Inc. */
333 
344 /*
355  * nfp_main.c
....@@ -44,7 +14,6 @@
4414 #include <linux/mutex.h>
4515 #include <linux/pci.h>
4616 #include <linux/firmware.h>
47
-#include <linux/vermagic.h>
4817 #include <linux/vmalloc.h>
4918 #include <net/devlink.h>
5019 
....@@ -61,10 +30,13 @@
6130 #include "nfp_net.h"
6231 
6332 static const char nfp_driver_name[] = "nfp";
64
-const char nfp_driver_version[] = VERMAGIC_STRING;
6533 
6634 static const struct pci_device_id nfp_pci_device_ids[] = {
6735 	{ PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000,
36
+	  PCI_VENDOR_ID_NETRONOME, PCI_ANY_ID,
37
+	  PCI_ANY_ID, 0,
38
+	},
39
+	{ PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP5000,
6840 	  PCI_VENDOR_ID_NETRONOME, PCI_ANY_ID,
6941 	  PCI_ANY_ID, 0,
7042 	},
....@@ -112,23 +84,18 @@
11284 int nfp_mbox_cmd(struct nfp_pf *pf, u32 cmd, void *in_data, u64 in_length,
11385 		 void *out_data, u64 out_length)
11486 {
115
-	unsigned long long addr;
11687 	unsigned long err_at;
11788 	u64 max_data_sz;
11889 	u32 val = 0;
119
-	u32 cpp_id;
12090 	int n, err;
12191 
12292 	if (!pf->mbox)
12393 		return -EOPNOTSUPP;
12494 
125
-	cpp_id = NFP_CPP_ISLAND_ID(pf->mbox->target, NFP_CPP_ACTION_RW, 0,
126
-				   pf->mbox->domain);
127
-	addr = pf->mbox->addr;
128
-	max_data_sz = pf->mbox->size - NFP_MBOX_SYM_MIN_SIZE;
95
+	max_data_sz = nfp_rtsym_size(pf->mbox) - NFP_MBOX_SYM_MIN_SIZE;
12996 
13097 	/* Check if cmd field is clear */
131
-	err = nfp_cpp_readl(pf->cpp, cpp_id, addr + NFP_MBOX_CMD, &val);
98
+	err = nfp_rtsym_readl(pf->cpp, pf->mbox, NFP_MBOX_CMD, &val);
13299 	if (err || val) {
133100 		nfp_warn(pf->cpp, "failed to issue command (%u): %u, err: %d\n",
134101 			 cmd, val, err);
....@@ -136,30 +103,29 @@
136103 	}
137104 
138105 	in_length = min(in_length, max_data_sz);
139
-	n = nfp_cpp_write(pf->cpp, cpp_id, addr + NFP_MBOX_DATA,
140
-			  in_data, in_length);
106
+	n = nfp_rtsym_write(pf->cpp, pf->mbox, NFP_MBOX_DATA, in_data,
107
+			    in_length);
141108 	if (n != in_length)
142109 		return -EIO;
143110 	/* Write data_len and wipe reserved */
144
-	err = nfp_cpp_writeq(pf->cpp, cpp_id, addr + NFP_MBOX_DATA_LEN,
145
-			     in_length);
111
+	err = nfp_rtsym_writeq(pf->cpp, pf->mbox, NFP_MBOX_DATA_LEN, in_length);
146112 	if (err)
147113 		return err;
148114 
149115 	/* Read back for ordering */
150
-	err = nfp_cpp_readl(pf->cpp, cpp_id, addr + NFP_MBOX_DATA_LEN, &val);
116
+	err = nfp_rtsym_readl(pf->cpp, pf->mbox, NFP_MBOX_DATA_LEN, &val);
151117 	if (err)
152118 		return err;
153119 
154120 	/* Write cmd and wipe return value */
155
-	err = nfp_cpp_writeq(pf->cpp, cpp_id, addr + NFP_MBOX_CMD, cmd);
121
+	err = nfp_rtsym_writeq(pf->cpp, pf->mbox, NFP_MBOX_CMD, cmd);
156122 	if (err)
157123 		return err;
158124 
159125 	err_at = jiffies + 5 * HZ;
160126 	while (true) {
161127 		/* Wait for command to go to 0 (NFP_MBOX_NO_CMD) */
162
-		err = nfp_cpp_readl(pf->cpp, cpp_id, addr + NFP_MBOX_CMD, &val);
128
+		err = nfp_rtsym_readl(pf->cpp, pf->mbox, NFP_MBOX_CMD, &val);
163129 		if (err)
164130 			return err;
165131 		if (!val)
....@@ -172,18 +138,18 @@
172138 	}
173139 
174140 	/* Copy output if any (could be error info, do it before reading ret) */
175
-	err = nfp_cpp_readl(pf->cpp, cpp_id, addr + NFP_MBOX_DATA_LEN, &val);
141
+	err = nfp_rtsym_readl(pf->cpp, pf->mbox, NFP_MBOX_DATA_LEN, &val);
176142 	if (err)
177143 		return err;
178144 
179145 	out_length = min_t(u32, val, min(out_length, max_data_sz));
180
-	n = nfp_cpp_read(pf->cpp, cpp_id, addr + NFP_MBOX_DATA,
181
-			 out_data, out_length);
146
+	n = nfp_rtsym_read(pf->cpp, pf->mbox, NFP_MBOX_DATA,
147
+			   out_data, out_length);
182148 	if (n != out_length)
183149 		return -EIO;
184150 
185151 	/* Check if there is an error */
186
-	err = nfp_cpp_readl(pf->cpp, cpp_id, addr + NFP_MBOX_RET, &val);
152
+	err = nfp_rtsym_readl(pf->cpp, pf->mbox, NFP_MBOX_RET, &val);
187153 	if (err)
188154 		return err;
189155 	if (val)
....@@ -326,10 +292,54 @@
326292 
327293 static int nfp_pcie_sriov_configure(struct pci_dev *pdev, int num_vfs)
328294 {
295
+	if (!pci_get_drvdata(pdev))
296
+		return -ENOENT;
297
+
329298 	if (num_vfs == 0)
330299 		return nfp_pcie_sriov_disable(pdev);
331300 	else
332301 		return nfp_pcie_sriov_enable(pdev, num_vfs);
302
+}
303
+
304
+int nfp_flash_update_common(struct nfp_pf *pf, const char *path,
305
+			    struct netlink_ext_ack *extack)
306
+{
307
+	struct device *dev = &pf->pdev->dev;
308
+	const struct firmware *fw;
309
+	struct nfp_nsp *nsp;
310
+	int err;
311
+
312
+	nsp = nfp_nsp_open(pf->cpp);
313
+	if (IS_ERR(nsp)) {
314
+		err = PTR_ERR(nsp);
315
+		if (extack)
316
+			NL_SET_ERR_MSG_MOD(extack, "can't access NSP");
317
+		else
318
+			dev_err(dev, "Failed to access the NSP: %d\n", err);
319
+		return err;
320
+	}
321
+
322
+	err = request_firmware_direct(&fw, path, dev);
323
+	if (err) {
324
+		NL_SET_ERR_MSG_MOD(extack,
325
+				   "unable to read flash file from disk");
326
+		goto exit_close_nsp;
327
+	}
328
+
329
+	dev_info(dev, "Please be patient while writing flash image: %s\n",
330
+		 path);
331
+
332
+	err = nfp_nsp_write_flash(nsp, fw);
333
+	if (err < 0)
334
+		goto exit_release_fw;
335
+	dev_info(dev, "Finished writing flash image\n");
336
+	err = 0;
337
+
338
+exit_release_fw:
339
+	release_firmware(fw);
340
+exit_close_nsp:
341
+	nfp_nsp_close(nsp);
342
+	return err;
333343 }
334344 
335345 static const struct firmware *
....@@ -340,7 +350,7 @@
340350 
341351 	err = request_firmware_direct(&fw, name, &pdev->dev);
342352 	nfp_info(pf->cpp, "  %s: %s\n",
343
-		 name, err ? "not found" : "found, loading...");
353
+		 name, err ? "not found" : "found");
344354 	if (err)
345355 		return NULL;
346356 
....@@ -418,8 +428,35 @@
418428 	return nfp_net_fw_request(pdev, pf, fw_name);
419429 }
420430 
431
+static int
432
+nfp_get_fw_policy_value(struct pci_dev *pdev, struct nfp_nsp *nsp,
433
+			const char *key, const char *default_val, int max_val,
434
+			int *value)
435
+{
436
+	char hwinfo[64];
437
+	long hi_val;
438
+	int err;
439
+
440
+	snprintf(hwinfo, sizeof(hwinfo), key);
441
+	err = nfp_nsp_hwinfo_lookup_optional(nsp, hwinfo, sizeof(hwinfo),
442
+					     default_val);
443
+	if (err)
444
+		return err;
445
+
446
+	err = kstrtol(hwinfo, 0, &hi_val);
447
+	if (err || hi_val < 0 || hi_val > max_val) {
448
+		dev_warn(&pdev->dev,
449
+			 "Invalid value '%s' from '%s', ignoring\n",
450
+			 hwinfo, key);
451
+		err = kstrtol(default_val, 0, &hi_val);
452
+	}
453
+
454
+	*value = hi_val;
455
+	return err;
456
+}
457
+
421458 /**
422
- * nfp_net_fw_load() - Load the firmware image
459
+ * nfp_fw_load() - Load the firmware image
423460  * @pdev:       PCI Device structure
424461  * @pf:		NFP PF Device structure
425462  * @nsp:	NFP SP handle
....@@ -429,42 +466,107 @@
429466 static int
430467 nfp_fw_load(struct pci_dev *pdev, struct nfp_pf *pf, struct nfp_nsp *nsp)
431468 {
432
-	const struct firmware *fw;
469
+	bool do_reset, fw_loaded = false;
470
+	const struct firmware *fw = NULL;
471
+	int err, reset, policy, ifcs = 0;
472
+	char *token, *ptr;
473
+	char hwinfo[64];
433474 	u16 interface;
434
-	int err;
475
+
476
+	snprintf(hwinfo, sizeof(hwinfo), "abi_drv_load_ifc");
477
+	err = nfp_nsp_hwinfo_lookup_optional(nsp, hwinfo, sizeof(hwinfo),
478
+					     NFP_NSP_DRV_LOAD_IFC_DEFAULT);
479
+	if (err)
480
+		return err;
435481 
436482 	interface = nfp_cpp_interface(pf->cpp);
437
-	if (NFP_CPP_INTERFACE_UNIT_of(interface) != 0) {
438
-		/* Only Unit 0 should reset or load firmware */
483
+	ptr = hwinfo;
484
+	while ((token = strsep(&ptr, ","))) {
485
+		unsigned long interface_hi;
486
+
487
+		err = kstrtoul(token, 0, &interface_hi);
488
+		if (err) {
489
+			dev_err(&pdev->dev,
490
+				"Failed to parse interface '%s': %d\n",
491
+				token, err);
492
+			return err;
493
+		}
494
+
495
+		ifcs++;
496
+		if (interface == interface_hi)
497
+			break;
498
+	}
499
+
500
+	if (!token) {
439501 		dev_info(&pdev->dev, "Firmware will be loaded by partner\n");
440502 		return 0;
441503 	}
442504 
505
+	err = nfp_get_fw_policy_value(pdev, nsp, "abi_drv_reset",
506
+				      NFP_NSP_DRV_RESET_DEFAULT,
507
+				      NFP_NSP_DRV_RESET_NEVER, &reset);
508
+	if (err)
509
+		return err;
510
+
511
+	err = nfp_get_fw_policy_value(pdev, nsp, "app_fw_from_flash",
512
+				      NFP_NSP_APP_FW_LOAD_DEFAULT,
513
+				      NFP_NSP_APP_FW_LOAD_PREF, &policy);
514
+	if (err)
515
+		return err;
516
+
443517 	fw = nfp_net_fw_find(pdev, pf);
444
-	if (!fw)
445
-		return 0;
518
+	do_reset = reset == NFP_NSP_DRV_RESET_ALWAYS ||
519
+		   (fw && reset == NFP_NSP_DRV_RESET_DISK);
446520 
447
-	dev_info(&pdev->dev, "Soft-reset, loading FW image\n");
448
-	err = nfp_nsp_device_soft_reset(nsp);
449
-	if (err < 0) {
450
-		dev_err(&pdev->dev, "Failed to soft reset the NFP: %d\n",
451
-			err);
452
-		goto exit_release_fw;
521
+	if (do_reset) {
522
+		dev_info(&pdev->dev, "Soft-resetting the NFP\n");
523
+		err = nfp_nsp_device_soft_reset(nsp);
524
+		if (err < 0) {
525
+			dev_err(&pdev->dev,
526
+				"Failed to soft reset the NFP: %d\n", err);
527
+			goto exit_release_fw;
528
+		}
453529 	}
454530 
455
-	err = nfp_nsp_load_fw(nsp, fw);
531
+	if (fw && policy != NFP_NSP_APP_FW_LOAD_FLASH) {
532
+		if (nfp_nsp_has_fw_loaded(nsp) && nfp_nsp_fw_loaded(nsp))
533
+			goto exit_release_fw;
456534 
457
-	if (err < 0) {
458
-		dev_err(&pdev->dev, "FW loading failed: %d\n", err);
459
-		goto exit_release_fw;
535
+		err = nfp_nsp_load_fw(nsp, fw);
536
+		if (err < 0) {
537
+			dev_err(&pdev->dev, "FW loading failed: %d\n",
538
+				err);
539
+			goto exit_release_fw;
540
+		}
541
+		dev_info(&pdev->dev, "Finished loading FW image\n");
542
+		fw_loaded = true;
543
+	} else if (policy != NFP_NSP_APP_FW_LOAD_DISK &&
544
+		   nfp_nsp_has_stored_fw_load(nsp)) {
545
+
546
+		/* Don't propagate this error to stick with legacy driver
547
+		 * behavior, failure will be detected later during init.
548
+		 */
549
+		if (!nfp_nsp_load_stored_fw(nsp))
550
+			dev_info(&pdev->dev, "Finished loading stored FW image\n");
551
+
552
+		/* Don't flag the fw_loaded in this case since other devices
553
+		 * may reuse the firmware when configured this way
554
+		 */
555
+	} else {
556
+		dev_warn(&pdev->dev, "Didn't load firmware, please update flash or reconfigure card\n");
460557 	}
461
-
462
-	dev_info(&pdev->dev, "Finished loading FW image\n");
463558 
464559 exit_release_fw:
465560 	release_firmware(fw);
466561 
467
-	return err < 0 ? err : 1;
562
+	/* We don't want to unload firmware when other devices may still be
563
+	 * dependent on it, which could be the case if there are multiple
564
+	 * devices that could load firmware.
565
+	 */
566
+	if (fw_loaded && ifcs == 1)
567
+		pf->unload_fw_on_remove = true;
568
+
569
+	return err < 0 ? err : fw_loaded;
468570 }
469571 
470572 static void
....@@ -566,9 +668,9 @@
566668 	/* Optional per-PCI PF mailbox */
567669 	snprintf(pf_symbol, sizeof(pf_symbol), NFP_MBOX_SYM_NAME, pf_id);
568670 	pf->mbox = nfp_rtsym_lookup(pf->rtbl, pf_symbol);
569
-	if (pf->mbox && pf->mbox->size < NFP_MBOX_SYM_MIN_SIZE) {
671
+	if (pf->mbox && nfp_rtsym_size(pf->mbox) < NFP_MBOX_SYM_MIN_SIZE) {
570672 		nfp_err(pf->cpp, "PF mailbox symbol too small: %llu < %d\n",
571
-			pf->mbox->size, NFP_MBOX_SYM_MIN_SIZE);
673
+			nfp_rtsym_size(pf->mbox), NFP_MBOX_SYM_MIN_SIZE);
572674 		return -EINVAL;
573675 	}
574676 
....@@ -581,6 +683,10 @@
581683 	struct devlink *devlink;
582684 	struct nfp_pf *pf;
583685 	int err;
686
+
687
+	if (pdev->vendor == PCI_VENDOR_ID_NETRONOME &&
688
+	    pdev->device == PCI_DEVICE_ID_NETRONOME_NFP6000_VF)
689
+		dev_warn(&pdev->dev, "Binding NFP VF device to the NFP PF driver, the VF driver is called 'nfp_netvf'\n");
584690 
585691 	err = pci_enable_device(pdev);
586692 	if (err < 0)
....@@ -686,7 +792,7 @@
686792 err_fw_unload:
687793 	kfree(pf->rtbl);
688794 	nfp_mip_close(pf->mip);
689
-	if (pf->fw_loaded)
795
+	if (pf->unload_fw_on_remove)
690796 		nfp_fw_unload(pf);
691797 	kfree(pf->eth_tbl);
692798 	kfree(pf->nspi);
....@@ -709,9 +815,13 @@
709815 	return err;
710816 }
711817 
712
-static void nfp_pci_remove(struct pci_dev *pdev)
818
+static void __nfp_pci_shutdown(struct pci_dev *pdev, bool unload_fw)
713819 {
714
-	struct nfp_pf *pf = pci_get_drvdata(pdev);
820
+	struct nfp_pf *pf;
821
+
822
+	pf = pci_get_drvdata(pdev);
823
+	if (!pf)
824
+		return;
715825 
716826 	nfp_hwmon_unregister(pf);
717827 
....@@ -722,7 +832,7 @@
722832 	vfree(pf->dumpspec);
723833 	kfree(pf->rtbl);
724834 	nfp_mip_close(pf->mip);
725
-	if (pf->fw_loaded)
835
+	if (unload_fw && pf->unload_fw_on_remove)
726836 		nfp_fw_unload(pf);
727837 
728838 	destroy_workqueue(pf->wq);
....@@ -738,11 +848,22 @@
738848 	pci_disable_device(pdev);
739849 }
740850 
851
+static void nfp_pci_remove(struct pci_dev *pdev)
852
+{
853
+	__nfp_pci_shutdown(pdev, true);
854
+}
855
+
856
+static void nfp_pci_shutdown(struct pci_dev *pdev)
857
+{
858
+	__nfp_pci_shutdown(pdev, false);
859
+}
860
+
741861 static struct pci_driver nfp_pci_driver = {
742862 	.name			= nfp_driver_name,
743863 	.id_table		= nfp_pci_device_ids,
744864 	.probe			= nfp_pci_probe,
745865 	.remove			= nfp_pci_remove,
866
+	.shutdown		= nfp_pci_shutdown,
746867 	.sriov_configure	= nfp_pcie_sriov_configure,
747868 };
748869 
....@@ -782,6 +903,8 @@
782903 module_init(nfp_main_init);
783904 module_exit(nfp_main_exit);
784905 
906
+MODULE_FIRMWARE("netronome/nic_AMDA0058-0011_2x40.nffw");
907
+MODULE_FIRMWARE("netronome/nic_AMDA0058-0012_2x40.nffw");
785908 MODULE_FIRMWARE("netronome/nic_AMDA0081-0001_1x40.nffw");
786909 MODULE_FIRMWARE("netronome/nic_AMDA0081-0001_4x10.nffw");
787910 MODULE_FIRMWARE("netronome/nic_AMDA0096-0001_2x10.nffw");
....@@ -795,4 +918,3 @@
795918 MODULE_AUTHOR("Netronome Systems <oss-drivers@netronome.com>");
796919 MODULE_LICENSE("GPL");
797920 MODULE_DESCRIPTION("The Netronome Flow Processor (NFP) driver.");
798
-MODULE_VERSION(UTS_RELEASE);