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2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376 
 kernel/drivers/net/ethernet/sfc/mcdi.c
....@@ -1,10 +1,7 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /****************************************************************************
23  * Driver for Solarflare network controllers and boards
34  * Copyright 2008-2013 Solarflare Communications Inc.
4
- *
5
- * This program is free software; you can redistribute it and/or modify it
6
- * under the terms of the GNU General Public License version 2 as published
7
- * by the Free Software Foundation, incorporated herein by reference.
85  */
96 
107 #include <linux/delay.h>
....@@ -166,9 +163,9 @@
166163 	/* Serialise with efx_mcdi_ev_cpl() and efx_mcdi_ev_death() */
167164 	spin_lock_bh(&mcdi->iface_lock);
168165 	++mcdi->seqno;
166
+	seqno = mcdi->seqno & SEQ_MASK;
169167 	spin_unlock_bh(&mcdi->iface_lock);
170168 
171
-	seqno = mcdi->seqno & SEQ_MASK;
172169 	xflags = 0;
173170 	if (mcdi->mode == MCDI_MODE_EVENTS)
174171 		xflags |= MCDI_HEADER_XFLAGS_EVREQ;
....@@ -215,12 +212,14 @@
215212 		 * progress on a NIC at any one time.  So no need for locking.
216213 		 */
217214 		for (i = 0; i < hdr_len / 4 && bytes < PAGE_SIZE; i++)
218
-			bytes += snprintf(buf + bytes, PAGE_SIZE - bytes,
219
-					  " %08x", le32_to_cpu(hdr[i].u32[0]));
215
+			bytes += scnprintf(buf + bytes, PAGE_SIZE - bytes,
216
+					   " %08x",
217
+					   le32_to_cpu(hdr[i].u32[0]));
220218 
221219 		for (i = 0; i < inlen / 4 && bytes < PAGE_SIZE; i++)
222
-			bytes += snprintf(buf + bytes, PAGE_SIZE - bytes,
223
-					  " %08x", le32_to_cpu(inbuf[i].u32[0]));
220
+			bytes += scnprintf(buf + bytes, PAGE_SIZE - bytes,
221
+					   " %08x",
222
+					   le32_to_cpu(inbuf[i].u32[0]));
224223 
225224 		netif_info(efx, hw, efx->net_dev, "MCDI RPC REQ:%s\n", buf);
226225 	}
....@@ -305,15 +304,15 @@
305304 		 */
306305 		for (i = 0; i < hdr_len && bytes < PAGE_SIZE; i++) {
307306 			efx->type->mcdi_read_response(efx, &hdr, (i * 4), 4);
308
-			bytes += snprintf(buf + bytes, PAGE_SIZE - bytes,
309
-					  " %08x", le32_to_cpu(hdr.u32[0]));
307
+			bytes += scnprintf(buf + bytes, PAGE_SIZE - bytes,
308
+					   " %08x", le32_to_cpu(hdr.u32[0]));
310309 		}
311310 
312311 		for (i = 0; i < data_len && bytes < PAGE_SIZE; i++) {
313312 			efx->type->mcdi_read_response(efx, &hdr,
314313 					mcdi->resp_hdr_len + (i * 4), 4);
315
-			bytes += snprintf(buf + bytes, PAGE_SIZE - bytes,
316
-					  " %08x", le32_to_cpu(hdr.u32[0]));
314
+			bytes += scnprintf(buf + bytes, PAGE_SIZE - bytes,
315
+					   " %08x", le32_to_cpu(hdr.u32[0]));
317316 		}
318317 
319318 		netif_info(efx, hw, efx->net_dev, "MCDI RPC RESP:%s\n", buf);
....@@ -1300,6 +1299,14 @@
13001299 	efx_schedule_reset(efx, RESET_TYPE_MCDI_TIMEOUT);
13011300 }
13021301 
1302
+static void efx_handle_drain_event(struct efx_nic *efx)
1303
+{
1304
+	if (atomic_dec_and_test(&efx->active_queues))
1305
+		wake_up(&efx->flush_wq);
1306
+
1307
+	WARN_ON(atomic_read(&efx->active_queues) < 0);
1308
+}
1309
+
13031310 /* Called from efx_farch_ev_process and efx_ef10_ev_process for MCDI events */
13041311 void efx_mcdi_process_event(struct efx_channel *channel,
13051312 			    efx_qword_t *event)
....@@ -1330,7 +1337,7 @@
13301337 		efx_mcdi_process_link_change(efx, event);
13311338 		break;
13321339 	case MCDI_EVENT_CODE_SENSOREVT:
1333
-		efx_mcdi_sensor_event(efx, event);
1340
+		efx_sensor_event(efx, event);
13341341 		break;
13351342 	case MCDI_EVENT_CODE_SCHEDERR:
13361343 		netif_dbg(efx, hw, efx->net_dev,
....@@ -1372,7 +1379,7 @@
13721379 		BUILD_BUG_ON(MCDI_EVENT_TX_FLUSH_TO_DRIVER_LBN !=
13731380 			     MCDI_EVENT_RX_FLUSH_TO_DRIVER_LBN);
13741381 		if (!MCDI_EVENT_FIELD(*event, TX_FLUSH_TO_DRIVER))
1375
-			efx_ef10_handle_drain_event(efx);
1382
+			efx_handle_drain_event(efx);
13761383 		break;
13771384 	case MCDI_EVENT_CODE_TX_ERR:
13781385 	case MCDI_EVENT_CODE_RX_ERR:
....@@ -1420,27 +1427,22 @@
14201427 	}
14211428 
14221429 	ver_words = (__le16 *)MCDI_PTR(outbuf, GET_VERSION_OUT_VERSION);
1423
-	offset = snprintf(buf, len, "%u.%u.%u.%u",
1424
-			  le16_to_cpu(ver_words[0]), le16_to_cpu(ver_words[1]),
1425
-			  le16_to_cpu(ver_words[2]), le16_to_cpu(ver_words[3]));
1430
+	offset = scnprintf(buf, len, "%u.%u.%u.%u",
1431
+			   le16_to_cpu(ver_words[0]),
1432
+			   le16_to_cpu(ver_words[1]),
1433
+			   le16_to_cpu(ver_words[2]),
1434
+			   le16_to_cpu(ver_words[3]));
14261435 
1427
-	/* EF10 may have multiple datapath firmware variants within a
1428
-	 * single version.  Report which variants are running.
1436
+	if (efx->type->print_additional_fwver)
1437
+		offset += efx->type->print_additional_fwver(efx, buf + offset,
1438
+							    len - offset);
1439
+
1440
+	/* It's theoretically possible for the string to exceed 31
1441
+	 * characters, though in practice the first three version
1442
+	 * components are short enough that this doesn't happen.
14291443 	 */
1430
-	if (efx_nic_rev(efx) >= EFX_REV_HUNT_A0) {
1431
-		struct efx_ef10_nic_data *nic_data = efx->nic_data;
1432
-
1433
-		offset += snprintf(buf + offset, len - offset, " rx%x tx%x",
1434
-				   nic_data->rx_dpcpu_fw_id,
1435
-				   nic_data->tx_dpcpu_fw_id);
1436
-
1437
-		/* It's theoretically possible for the string to exceed 31
1438
-		 * characters, though in practice the first three version
1439
-		 * components are short enough that this doesn't happen.
1440
-		 */
1441
-		if (WARN_ON(offset >= len))
1442
-			buf[0] = 0;
1443
-	}
1444
+	if (WARN_ON(offset >= len))
1445
+		buf[0] = 0;
14441446 
14451447 	return;
14461448 
....@@ -1619,6 +1621,35 @@
16191621 	return rc;
16201622 }
16211623 
1624
+/* This function finds types using the new NVRAM_PARTITIONS mcdi. */
1625
+static int efx_new_mcdi_nvram_types(struct efx_nic *efx, u32 *number,
1626
+				    u32 *nvram_types)
1627
+{
1628
+	efx_dword_t *outbuf = kzalloc(MC_CMD_NVRAM_PARTITIONS_OUT_LENMAX_MCDI2,
1629
+				      GFP_KERNEL);
1630
+	size_t outlen;
1631
+	int rc;
1632
+
1633
+	if (!outbuf)
1634
+		return -ENOMEM;
1635
+
1636
+	BUILD_BUG_ON(MC_CMD_NVRAM_PARTITIONS_IN_LEN != 0);
1637
+
1638
+	rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_PARTITIONS, NULL, 0,
1639
+			  outbuf, MC_CMD_NVRAM_PARTITIONS_OUT_LENMAX_MCDI2, &outlen);
1640
+	if (rc)
1641
+		goto fail;
1642
+
1643
+	*number = MCDI_DWORD(outbuf, NVRAM_PARTITIONS_OUT_NUM_PARTITIONS);
1644
+
1645
+	memcpy(nvram_types, MCDI_PTR(outbuf, NVRAM_PARTITIONS_OUT_TYPE_ID),
1646
+	       *number * sizeof(u32));
1647
+
1648
+fail:
1649
+	kfree(outbuf);
1650
+	return rc;
1651
+}
1652
+
16221653 int efx_mcdi_nvram_info(struct efx_nic *efx, unsigned int type,
16231654 			size_t *size_out, size_t *erase_size_out,
16241655 			bool *protected_out)
....@@ -1670,6 +1701,39 @@
16701701 	default:
16711702 		return -EIO;
16721703 	}
1704
+}
1705
+
1706
+/* This function tests nvram partitions using the new mcdi partition lookup scheme */
1707
+int efx_new_mcdi_nvram_test_all(struct efx_nic *efx)
1708
+{
1709
+	u32 *nvram_types = kzalloc(MC_CMD_NVRAM_PARTITIONS_OUT_LENMAX_MCDI2,
1710
+				   GFP_KERNEL);
1711
+	unsigned int number;
1712
+	int rc, i;
1713
+
1714
+	if (!nvram_types)
1715
+		return -ENOMEM;
1716
+
1717
+	rc = efx_new_mcdi_nvram_types(efx, &number, nvram_types);
1718
+	if (rc)
1719
+		goto fail;
1720
+
1721
+	/* Require at least one check */
1722
+	rc = -EAGAIN;
1723
+
1724
+	for (i = 0; i < number; i++) {
1725
+		if (nvram_types[i] == NVRAM_PARTITION_TYPE_PARTITION_MAP ||
1726
+		    nvram_types[i] == NVRAM_PARTITION_TYPE_DYNAMIC_CONFIG)
1727
+			continue;
1728
+
1729
+		rc = efx_mcdi_nvram_test(efx, nvram_types[i]);
1730
+		if (rc)
1731
+			goto fail;
1732
+	}
1733
+
1734
+fail:
1735
+	kfree(nvram_types);
1736
+	return rc;
16731737 }
16741738 
16751739 int efx_mcdi_nvram_test_all(struct efx_nic *efx)
....@@ -1804,10 +1868,9 @@
18041868 	return efx_mcdi_exit_assertion(efx);
18051869 }
18061870 
1807
-void efx_mcdi_set_id_led(struct efx_nic *efx, enum efx_led_mode mode)
1871
+int efx_mcdi_set_id_led(struct efx_nic *efx, enum efx_led_mode mode)
18081872 {
18091873 	MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_ID_LED_IN_LEN);
1810
-	int rc;
18111874 
18121875 	BUILD_BUG_ON(EFX_LED_OFF != MC_CMD_LED_OFF);
18131876 	BUILD_BUG_ON(EFX_LED_ON != MC_CMD_LED_ON);
....@@ -1817,8 +1880,7 @@
18171880 
18181881 	MCDI_SET_DWORD(inbuf, SET_ID_LED_IN_STATE, mode);
18191882 
1820
-	rc = efx_mcdi_rpc(efx, MC_CMD_SET_ID_LED, inbuf, sizeof(inbuf),
1821
-			  NULL, 0, NULL);
1883
+	return efx_mcdi_rpc(efx, MC_CMD_SET_ID_LED, inbuf, sizeof(inbuf), NULL, 0, NULL);
18221884 }
18231885 
18241886 static int efx_mcdi_reset_func(struct efx_nic *efx)
....@@ -2074,22 +2136,26 @@
20742136 
20752137 static int efx_mcdi_nvram_update_start(struct efx_nic *efx, unsigned int type)
20762138 {
2077
-	MCDI_DECLARE_BUF(inbuf, MC_CMD_NVRAM_UPDATE_START_IN_LEN);
2139
+	MCDI_DECLARE_BUF(inbuf, MC_CMD_NVRAM_UPDATE_START_V2_IN_LEN);
20782140 	int rc;
20792141 
20802142 	MCDI_SET_DWORD(inbuf, NVRAM_UPDATE_START_IN_TYPE, type);
2143
+	MCDI_POPULATE_DWORD_1(inbuf, NVRAM_UPDATE_START_V2_IN_FLAGS,
2144
+			      NVRAM_UPDATE_START_V2_IN_FLAG_REPORT_VERIFY_RESULT,
2145
+			      1);
20812146 
20822147 	BUILD_BUG_ON(MC_CMD_NVRAM_UPDATE_START_OUT_LEN != 0);
20832148 
20842149 	rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_UPDATE_START, inbuf, sizeof(inbuf),
20852150 			  NULL, 0, NULL);
2151
+
20862152 	return rc;
20872153 }
20882154 
20892155 static int efx_mcdi_nvram_read(struct efx_nic *efx, unsigned int type,
20902156 			       loff_t offset, u8 *buffer, size_t length)
20912157 {
2092
-	MCDI_DECLARE_BUF(inbuf, MC_CMD_NVRAM_READ_IN_LEN);
2158
+	MCDI_DECLARE_BUF(inbuf, MC_CMD_NVRAM_READ_IN_V2_LEN);
20932159 	MCDI_DECLARE_BUF(outbuf,
20942160 			 MC_CMD_NVRAM_READ_OUT_LEN(EFX_MCDI_NVRAM_LEN_MAX));
20952161 	size_t outlen;
....@@ -2098,6 +2164,8 @@
20982164 	MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_TYPE, type);
20992165 	MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_OFFSET, offset);
21002166 	MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_LENGTH, length);
2167
+	MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_V2_MODE,
2168
+		       MC_CMD_NVRAM_READ_IN_V2_DEFAULT);
21012169 
21022170 	rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_READ, inbuf, sizeof(inbuf),
21032171 			  outbuf, sizeof(outbuf), &outlen);
....@@ -2147,15 +2215,51 @@
21472215 
21482216 static int efx_mcdi_nvram_update_finish(struct efx_nic *efx, unsigned int type)
21492217 {
2150
-	MCDI_DECLARE_BUF(inbuf, MC_CMD_NVRAM_UPDATE_FINISH_IN_LEN);
2151
-	int rc;
2218
+	MCDI_DECLARE_BUF(inbuf, MC_CMD_NVRAM_UPDATE_FINISH_V2_IN_LEN);
2219
+	MCDI_DECLARE_BUF(outbuf, MC_CMD_NVRAM_UPDATE_FINISH_V2_OUT_LEN);
2220
+	size_t outlen;
2221
+	int rc, rc2;
21522222 
21532223 	MCDI_SET_DWORD(inbuf, NVRAM_UPDATE_FINISH_IN_TYPE, type);
2154
-
2155
-	BUILD_BUG_ON(MC_CMD_NVRAM_UPDATE_FINISH_OUT_LEN != 0);
2224
+	/* Always set this flag. Old firmware ignores it */
2225
+	MCDI_POPULATE_DWORD_1(inbuf, NVRAM_UPDATE_FINISH_V2_IN_FLAGS,
2226
+			      NVRAM_UPDATE_FINISH_V2_IN_FLAG_REPORT_VERIFY_RESULT,
2227
+			      1);
21562228 
21572229 	rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_UPDATE_FINISH, inbuf, sizeof(inbuf),
2158
-			  NULL, 0, NULL);
2230
+			  outbuf, sizeof(outbuf), &outlen);
2231
+	if (!rc && outlen >= MC_CMD_NVRAM_UPDATE_FINISH_V2_OUT_LEN) {
2232
+		rc2 = MCDI_DWORD(outbuf, NVRAM_UPDATE_FINISH_V2_OUT_RESULT_CODE);
2233
+		if (rc2 != MC_CMD_NVRAM_VERIFY_RC_SUCCESS)
2234
+			netif_err(efx, drv, efx->net_dev,
2235
+				  "NVRAM update failed verification with code 0x%x\n",
2236
+				  rc2);
2237
+		switch (rc2) {
2238
+		case MC_CMD_NVRAM_VERIFY_RC_SUCCESS:
2239
+			break;
2240
+		case MC_CMD_NVRAM_VERIFY_RC_CMS_CHECK_FAILED:
2241
+		case MC_CMD_NVRAM_VERIFY_RC_MESSAGE_DIGEST_CHECK_FAILED:
2242
+		case MC_CMD_NVRAM_VERIFY_RC_SIGNATURE_CHECK_FAILED:
2243
+		case MC_CMD_NVRAM_VERIFY_RC_TRUSTED_APPROVERS_CHECK_FAILED:
2244
+		case MC_CMD_NVRAM_VERIFY_RC_SIGNATURE_CHAIN_CHECK_FAILED:
2245
+			rc = -EIO;
2246
+			break;
2247
+		case MC_CMD_NVRAM_VERIFY_RC_INVALID_CMS_FORMAT:
2248
+		case MC_CMD_NVRAM_VERIFY_RC_BAD_MESSAGE_DIGEST:
2249
+			rc = -EINVAL;
2250
+			break;
2251
+		case MC_CMD_NVRAM_VERIFY_RC_NO_VALID_SIGNATURES:
2252
+		case MC_CMD_NVRAM_VERIFY_RC_NO_TRUSTED_APPROVERS:
2253
+		case MC_CMD_NVRAM_VERIFY_RC_NO_SIGNATURE_MATCH:
2254
+			rc = -EPERM;
2255
+			break;
2256
+		default:
2257
+			netif_err(efx, drv, efx->net_dev,
2258
+				  "Unknown response to NVRAM_UPDATE_FINISH\n");
2259
+			rc = -EIO;
2260
+		}
2261
+	}
2262
+
21592263 	return rc;
21602264 }
21612265