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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/drivers/net/ethernet/microchip/lan743x_ethtool.c
..
..
@@ -2,11 +2,11 @@
2
2
 /* Copyright (C) 2018 Microchip Technology Inc. */
3
3
 
4
4
 #include <linux/netdevice.h>
5
-#include "lan743x_main.h"
6
-#include "lan743x_ethtool.h"
7
5
 #include <linux/net_tstamp.h>
8
6
 #include <linux/pci.h>
9
7
 #include <linux/phy.h>
8
+#include "lan743x_main.h"
9
+#include "lan743x_ethtool.h"
10
10
 
11
11
 /* eeprom */
12
12
 #define LAN743X_EEPROM_MAGIC		    (0x74A5)
..
..
@@ -14,60 +14,137 @@
14
14
 #define EEPROM_INDICATOR_1		    (0xA5)
15
15
 #define EEPROM_INDICATOR_2		    (0xAA)
16
16
 #define EEPROM_MAC_OFFSET		    (0x01)
17
-#define MAX_EEPROM_SIZE			    512
17
+#define MAX_EEPROM_SIZE			    (512)
18
+#define MAX_OTP_SIZE			    (1024)
18
19
 #define OTP_INDICATOR_1			    (0xF3)
19
20
 #define OTP_INDICATOR_2			    (0xF7)
21
+
22
+static int lan743x_otp_power_up(struct lan743x_adapter *adapter)
23
+{
24
+	u32 reg_value;
25
+
26
+	reg_value = lan743x_csr_read(adapter, OTP_PWR_DN);
27
+
28
+	if (reg_value & OTP_PWR_DN_PWRDN_N_) {
29
+		/* clear it and wait to be cleared */
30
+		reg_value &= ~OTP_PWR_DN_PWRDN_N_;
31
+		lan743x_csr_write(adapter, OTP_PWR_DN, reg_value);
32
+
33
+		usleep_range(100, 20000);
34
+	}
35
+
36
+	return 0;
37
+}
38
+
39
+static void lan743x_otp_power_down(struct lan743x_adapter *adapter)
40
+{
41
+	u32 reg_value;
42
+
43
+	reg_value = lan743x_csr_read(adapter, OTP_PWR_DN);
44
+	if (!(reg_value & OTP_PWR_DN_PWRDN_N_)) {
45
+		/* set power down bit */
46
+		reg_value |= OTP_PWR_DN_PWRDN_N_;
47
+		lan743x_csr_write(adapter, OTP_PWR_DN, reg_value);
48
+	}
49
+}
50
+
51
+static void lan743x_otp_set_address(struct lan743x_adapter *adapter,
52
+				    u32 address)
53
+{
54
+	lan743x_csr_write(adapter, OTP_ADDR_HIGH, (address >> 8) & 0x03);
55
+	lan743x_csr_write(adapter, OTP_ADDR_LOW, address & 0xFF);
56
+}
57
+
58
+static void lan743x_otp_read_go(struct lan743x_adapter *adapter)
59
+{
60
+	lan743x_csr_write(adapter, OTP_FUNC_CMD, OTP_FUNC_CMD_READ_);
61
+	lan743x_csr_write(adapter, OTP_CMD_GO, OTP_CMD_GO_GO_);
62
+}
63
+
64
+static int lan743x_otp_wait_till_not_busy(struct lan743x_adapter *adapter)
65
+{
66
+	unsigned long timeout;
67
+	u32 reg_val;
68
+
69
+	timeout = jiffies + HZ;
70
+	do {
71
+		if (time_after(jiffies, timeout)) {
72
+			netif_warn(adapter, drv, adapter->netdev,
73
+				   "Timeout on OTP_STATUS completion\n");
74
+			return -EIO;
75
+		}
76
+		udelay(1);
77
+		reg_val = lan743x_csr_read(adapter, OTP_STATUS);
78
+	} while (reg_val & OTP_STATUS_BUSY_);
79
+
80
+	return 0;
81
+}
82
+
83
+static int lan743x_otp_read(struct lan743x_adapter *adapter, u32 offset,
84
+			    u32 length, u8 *data)
85
+{
86
+	int ret;
87
+	int i;
88
+
89
+	if (offset + length > MAX_OTP_SIZE)
90
+		return -EINVAL;
91
+
92
+	ret = lan743x_otp_power_up(adapter);
93
+	if (ret < 0)
94
+		return ret;
95
+
96
+	ret = lan743x_otp_wait_till_not_busy(adapter);
97
+	if (ret < 0)
98
+		return ret;
99
+
100
+	for (i = 0; i < length; i++) {
101
+		lan743x_otp_set_address(adapter, offset + i);
102
+
103
+		lan743x_otp_read_go(adapter);
104
+		ret = lan743x_otp_wait_till_not_busy(adapter);
105
+		if (ret < 0)
106
+			return ret;
107
+		data[i] = lan743x_csr_read(adapter, OTP_READ_DATA);
108
+	}
109
+
110
+	lan743x_otp_power_down(adapter);
111
+
112
+	return 0;
113
+}
20
114
 
21
115
 static int lan743x_otp_write(struct lan743x_adapter *adapter, u32 offset,
22
116
 			     u32 length, u8 *data)
23
117
 {
24
-	unsigned long timeout;
25
-	u32 buf;
118
+	int ret;
26
119
 	int i;
27
120
 
28
-	buf = lan743x_csr_read(adapter, OTP_PWR_DN);
121
+	if (offset + length > MAX_OTP_SIZE)
122
+		return -EINVAL;
29
123
 
30
-	if (buf & OTP_PWR_DN_PWRDN_N_) {
31
-		/* clear it and wait to be cleared */
32
-		lan743x_csr_write(adapter, OTP_PWR_DN, 0);
124
+	ret = lan743x_otp_power_up(adapter);
125
+	if (ret < 0)
126
+		return ret;
33
127
 
34
-		timeout = jiffies + HZ;
35
-		do {
36
-			udelay(1);
37
-			buf = lan743x_csr_read(adapter, OTP_PWR_DN);
38
-			if (time_after(jiffies, timeout)) {
39
-				netif_warn(adapter, drv, adapter->netdev,
40
-					   "timeout on OTP_PWR_DN completion\n");
41
-				return -EIO;
42
-			}
43
-		} while (buf & OTP_PWR_DN_PWRDN_N_);
44
-	}
128
+	ret = lan743x_otp_wait_till_not_busy(adapter);
129
+	if (ret < 0)
130
+		return ret;
45
131
 
46
132
 	/* set to BYTE program mode */
47
133
 	lan743x_csr_write(adapter, OTP_PRGM_MODE, OTP_PRGM_MODE_BYTE_);
48
134
 
49
135
 	for (i = 0; i < length; i++) {
50
-		lan743x_csr_write(adapter, OTP_ADDR1,
51
-				  ((offset + i) >> 8) &
52
-				  OTP_ADDR1_15_11_MASK_);
53
-		lan743x_csr_write(adapter, OTP_ADDR2,
54
-				  ((offset + i) &
55
-				  OTP_ADDR2_10_3_MASK_));
136
+		lan743x_otp_set_address(adapter, offset + i);
137
+
56
138
 		lan743x_csr_write(adapter, OTP_PRGM_DATA, data[i]);
57
139
 		lan743x_csr_write(adapter, OTP_TST_CMD, OTP_TST_CMD_PRGVRFY_);
58
140
 		lan743x_csr_write(adapter, OTP_CMD_GO, OTP_CMD_GO_GO_);
59
141
 
60
-		timeout = jiffies + HZ;
61
-		do {
62
-			udelay(1);
63
-			buf = lan743x_csr_read(adapter, OTP_STATUS);
64
-			if (time_after(jiffies, timeout)) {
65
-				netif_warn(adapter, drv, adapter->netdev,
66
-					   "Timeout on OTP_STATUS completion\n");
67
-				return -EIO;
68
-			}
69
-		} while (buf & OTP_STATUS_BUSY_);
142
+		ret = lan743x_otp_wait_till_not_busy(adapter);
143
+		if (ret < 0)
144
+			return ret;
70
145
 	}
146
+
147
+	lan743x_otp_power_down(adapter);
71
148
 
72
149
 	return 0;
73
150
 }
..
..
@@ -120,6 +197,9 @@
120
197
 	u32 val;
121
198
 	int i;
122
199
 
200
+	if (offset + length > MAX_EEPROM_SIZE)
201
+		return -EINVAL;
202
+
123
203
 	retval = lan743x_eeprom_confirm_not_busy(adapter);
124
204
 	if (retval)
125
205
 		return retval;
..
..
@@ -147,6 +227,9 @@
147
227
 	int retval;
148
228
 	u32 val;
149
229
 	int i;
230
+
231
+	if (offset + length > MAX_EEPROM_SIZE)
232
+		return -EINVAL;
150
233
 
151
234
 	retval = lan743x_eeprom_confirm_not_busy(adapter);
152
235
 	if (retval)
..
..
@@ -207,6 +290,11 @@
207
290
 
208
291
 static int lan743x_ethtool_get_eeprom_len(struct net_device *netdev)
209
292
 {
293
+	struct lan743x_adapter *adapter = netdev_priv(netdev);
294
+
295
+	if (adapter->flags & LAN743X_ADAPTER_FLAG_OTP)
296
+		return MAX_OTP_SIZE;
297
+
210
298
 	return MAX_EEPROM_SIZE;
211
299
 }
212
300
 
..
..
@@ -214,8 +302,14 @@
214
302
 				      struct ethtool_eeprom *ee, u8 *data)
215
303
 {
216
304
 	struct lan743x_adapter *adapter = netdev_priv(netdev);
305
+	int ret = 0;
217
306
 
218
-	return lan743x_eeprom_read(adapter, ee->offset, ee->len, data);
307
+	if (adapter->flags & LAN743X_ADAPTER_FLAG_OTP)
308
+		ret = lan743x_otp_read(adapter, ee->offset, ee->len, data);
309
+	else
310
+		ret = lan743x_eeprom_read(adapter, ee->offset, ee->len, data);
311
+
312
+	return ret;
219
313
 }
220
314
 
221
315
 static int lan743x_ethtool_set_eeprom(struct net_device *netdev,
..
..
@@ -224,17 +318,18 @@
224
318
 	struct lan743x_adapter *adapter = netdev_priv(netdev);
225
319
 	int ret = -EINVAL;
226
320
 
227
-	if (ee->magic == LAN743X_EEPROM_MAGIC)
228
-		ret = lan743x_eeprom_write(adapter, ee->offset, ee->len,
229
-					   data);
230
-	/* Beware!  OTP is One Time Programming ONLY!
231
-	 * So do some strict condition check before messing up
232
-	 */
233
-	else if ((ee->magic == LAN743X_OTP_MAGIC) &&
234
-		 (ee->offset == 0) &&
235
-		 (ee->len == MAX_EEPROM_SIZE) &&
236
-		 (data[0] == OTP_INDICATOR_1))
237
-		ret = lan743x_otp_write(adapter, ee->offset, ee->len, data);
321
+	if (adapter->flags & LAN743X_ADAPTER_FLAG_OTP) {
322
+		/* Beware!  OTP is One Time Programming ONLY! */
323
+		if (ee->magic == LAN743X_OTP_MAGIC) {
324
+			ret = lan743x_otp_write(adapter, ee->offset,
325
+						ee->len, data);
326
+		}
327
+	} else {
328
+		if (ee->magic == LAN743X_EEPROM_MAGIC) {
329
+			ret = lan743x_eeprom_write(adapter, ee->offset,
330
+						   ee->len, data);
331
+		}
332
+	}
238
333
 
239
334
 	return ret;
240
335
 }
..
..
@@ -360,6 +455,10 @@
360
455
 	STAT_TX_COUNTER_ROLLOVER_STATUS
361
456
 };
362
457
 
458
+static const char lan743x_priv_flags_strings[][ETH_GSTRING_LEN] = {
459
+	"OTP_ACCESS",
460
+};
461
+
363
462
 static void lan743x_ethtool_get_strings(struct net_device *netdev,
364
463
 					u32 stringset, u8 *data)
365
464
 {
..
..
@@ -374,6 +473,10 @@
374
473
 		       sizeof(lan743x_set1_sw_cnt_strings)],
375
474
 		       lan743x_set2_hw_cnt_strings,
376
475
 		       sizeof(lan743x_set2_hw_cnt_strings));
476
+		break;
477
+	case ETH_SS_PRIV_FLAGS:
478
+		memcpy(data, lan743x_priv_flags_strings,
479
+		       sizeof(lan743x_priv_flags_strings));
377
480
 		break;
378
481
 	}
379
482
 }
..
..
@@ -399,6 +502,22 @@
399
502
 	}
400
503
 }
401
504
 
505
+static u32 lan743x_ethtool_get_priv_flags(struct net_device *netdev)
506
+{
507
+	struct lan743x_adapter *adapter = netdev_priv(netdev);
508
+
509
+	return adapter->flags;
510
+}
511
+
512
+static int lan743x_ethtool_set_priv_flags(struct net_device *netdev, u32 flags)
513
+{
514
+	struct lan743x_adapter *adapter = netdev_priv(netdev);
515
+
516
+	adapter->flags = flags;
517
+
518
+	return 0;
519
+}
520
+
402
521
 static int lan743x_ethtool_get_sset_count(struct net_device *netdev, int sset)
403
522
 {
404
523
 	switch (sset) {
..
..
@@ -411,6 +530,8 @@
411
530
 		ret += ARRAY_SIZE(lan743x_set2_hw_cnt_strings);
412
531
 		return ret;
413
532
 	}
533
+	case ETH_SS_PRIV_FLAGS:
534
+		return ARRAY_SIZE(lan743x_priv_flags_strings);
414
535
 	default:
415
536
 		return -EOPNOTSUPP;
416
537
 	}
..
..
@@ -427,7 +548,7 @@
427
548
 		case TCP_V4_FLOW:case UDP_V4_FLOW:
428
549
 		case TCP_V6_FLOW:case UDP_V6_FLOW:
429
550
 			rxnfc->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
430
-			/* fall through */
551
+			fallthrough;
431
552
 		case IPV4_FLOW: case IPV6_FLOW:
432
553
 			rxnfc->data |= RXH_IP_SRC | RXH_IP_DST;
433
554
 			return 0;
..
..
@@ -659,9 +780,7 @@
659
780
 
660
781
 	wol->supported = 0;
661
782
 	wol->wolopts = 0;
662
-
663
-	if (netdev->phydev)
664
-		phy_ethtool_get_wol(netdev->phydev, wol);
783
+	phy_ethtool_get_wol(netdev->phydev, wol);
665
784
 
666
785
 	wol->supported |= WAKE_BCAST | WAKE_UCAST | WAKE_MCAST |
667
786
 		WAKE_MAGIC | WAKE_PHY | WAKE_ARP;
..
..
@@ -690,8 +809,9 @@
690
809
 
691
810
 	device_set_wakeup_enable(&adapter->pdev->dev, (bool)wol->wolopts);
692
811
 
693
-	return netdev->phydev ? phy_ethtool_set_wol(netdev->phydev, wol)
694
-			: -ENETDOWN;
812
+	phy_ethtool_set_wol(netdev->phydev, wol);
813
+
814
+	return 0;
695
815
 }
696
816
 #endif /* CONFIG_PM */
697
817
 
..
..
@@ -706,6 +826,8 @@
706
826
 	.set_eeprom = lan743x_ethtool_set_eeprom,
707
827
 	.get_strings = lan743x_ethtool_get_strings,
708
828
 	.get_ethtool_stats = lan743x_ethtool_get_ethtool_stats,
829
+	.get_priv_flags = lan743x_ethtool_get_priv_flags,
830
+	.set_priv_flags = lan743x_ethtool_set_priv_flags,
709
831
 	.get_sset_count = lan743x_ethtool_get_sset_count,
710
832
 	.get_rxnfc = lan743x_ethtool_get_rxnfc,
711
833
 	.get_rxfh_key_size = lan743x_ethtool_get_rxfh_key_size,