1 /*
2  * Copyright (C) 2006-2008 PA Semi, Inc
3  *
4  * Ethtool hooks for the PA Semi PWRficient onchip 1G/10G Ethernet MACs
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, see <http://www.gnu.org/licenses/>.
17  */
18 
19 
20 #include <linux/netdevice.h>
21 #include <linux/ethtool.h>
22 #include <linux/pci.h>
23 #include <linux/inet_lro.h>
24 
25 #include <asm/pasemi_dma.h>
26 #include "pasemi_mac.h"
27 
28 static struct {
29 	const char str[ETH_GSTRING_LEN];
30 } ethtool_stats_keys[] = {
31 	{ "rx-drops" },
32 	{ "rx-bytes" },
33 	{ "rx-packets" },
34 	{ "rx-broadcast-packets" },
35 	{ "rx-multicast-packets" },
36 	{ "rx-crc-errors" },
37 	{ "rx-undersize-errors" },
38 	{ "rx-oversize-errors" },
39 	{ "rx-short-fragment-errors" },
40 	{ "rx-jabber-errors" },
41 	{ "rx-64-byte-packets" },
42 	{ "rx-65-127-byte-packets" },
43 	{ "rx-128-255-byte-packets" },
44 	{ "rx-256-511-byte-packets" },
45 	{ "rx-512-1023-byte-packets" },
46 	{ "rx-1024-1518-byte-packets" },
47 	{ "rx-pause-frames" },
48 	{ "tx-bytes" },
49 	{ "tx-packets" },
50 	{ "tx-broadcast-packets" },
51 	{ "tx-multicast-packets" },
52 	{ "tx-collisions" },
53 	{ "tx-late-collisions" },
54 	{ "tx-excessive-collisions" },
55 	{ "tx-crc-errors" },
56 	{ "tx-undersize-errors" },
57 	{ "tx-oversize-errors" },
58 	{ "tx-64-byte-packets" },
59 	{ "tx-65-127-byte-packets" },
60 	{ "tx-128-255-byte-packets" },
61 	{ "tx-256-511-byte-packets" },
62 	{ "tx-512-1023-byte-packets" },
63 	{ "tx-1024-1518-byte-packets" },
64 };
65 
66 static int
67 pasemi_mac_ethtool_get_settings(struct net_device *netdev,
68 			       struct ethtool_cmd *cmd)
69 {
70 	struct pasemi_mac *mac = netdev_priv(netdev);
71 	struct phy_device *phydev = mac->phydev;
72 
73 	if (!phydev)
74 		return -EOPNOTSUPP;
75 
76 	return phy_ethtool_gset(phydev, cmd);
77 }
78 
79 static int
80 pasemi_mac_ethtool_set_settings(struct net_device *netdev,
81 			       struct ethtool_cmd *cmd)
82 {
83 	struct pasemi_mac *mac = netdev_priv(netdev);
84 	struct phy_device *phydev = mac->phydev;
85 
86 	if (!phydev)
87 		return -EOPNOTSUPP;
88 
89 	return phy_ethtool_sset(phydev, cmd);
90 }
91 
92 static u32
93 pasemi_mac_ethtool_get_msglevel(struct net_device *netdev)
94 {
95 	struct pasemi_mac *mac = netdev_priv(netdev);
96 	return mac->msg_enable;
97 }
98 
99 static void
100 pasemi_mac_ethtool_set_msglevel(struct net_device *netdev,
101 				u32 level)
102 {
103 	struct pasemi_mac *mac = netdev_priv(netdev);
104 	mac->msg_enable = level;
105 }
106 
107 
108 static void
109 pasemi_mac_ethtool_get_ringparam(struct net_device *netdev,
110 				 struct ethtool_ringparam *ering)
111 {
112 	struct pasemi_mac *mac = netdev_priv(netdev);
113 
114 	ering->tx_max_pending = TX_RING_SIZE/2;
115 	ering->tx_pending = RING_USED(mac->tx)/2;
116 	ering->rx_max_pending = RX_RING_SIZE/4;
117 	ering->rx_pending = RING_USED(mac->rx)/4;
118 }
119 
120 static int pasemi_mac_get_sset_count(struct net_device *netdev, int sset)
121 {
122 	switch (sset) {
123 	case ETH_SS_STATS:
124 		return ARRAY_SIZE(ethtool_stats_keys);
125 	default:
126 		return -EOPNOTSUPP;
127 	}
128 }
129 
130 static void pasemi_mac_get_ethtool_stats(struct net_device *netdev,
131 		struct ethtool_stats *stats, u64 *data)
132 {
133 	struct pasemi_mac *mac = netdev_priv(netdev);
134 	int i;
135 
136 	data[0] = pasemi_read_dma_reg(PAS_DMA_RXINT_RCMDSTA(mac->dma_if))
137 			>> PAS_DMA_RXINT_RCMDSTA_DROPS_S;
138 	for (i = 0; i < 32; i++)
139 		data[1+i] = pasemi_read_mac_reg(mac->dma_if, PAS_MAC_RMON(i));
140 }
141 
142 static void pasemi_mac_get_strings(struct net_device *netdev, u32 stringset,
143 				   u8 *data)
144 {
145 	memcpy(data, ethtool_stats_keys, sizeof(ethtool_stats_keys));
146 }
147 
148 const struct ethtool_ops pasemi_mac_ethtool_ops = {
149 	.get_settings		= pasemi_mac_ethtool_get_settings,
150 	.set_settings		= pasemi_mac_ethtool_set_settings,
151 	.get_msglevel		= pasemi_mac_ethtool_get_msglevel,
152 	.set_msglevel		= pasemi_mac_ethtool_set_msglevel,
153 	.get_link		= ethtool_op_get_link,
154 	.get_ringparam          = pasemi_mac_ethtool_get_ringparam,
155 	.get_strings		= pasemi_mac_get_strings,
156 	.get_sset_count		= pasemi_mac_get_sset_count,
157 	.get_ethtool_stats	= pasemi_mac_get_ethtool_stats,
158 };
159 
160