1 /* Synopsys DesignWare Core Enterprise Ethernet (XLGMAC) Driver
2 *
3 * Copyright (c) 2017 Synopsys, Inc. (www.synopsys.com)
4 *
5 * This program is dual-licensed; you may select either version 2 of
6 * the GNU General Public License ("GPL") or BSD license ("BSD").
7 *
8 * This Synopsys DWC XLGMAC software driver and associated documentation
9 * (hereinafter the "Software") is an unsupported proprietary work of
10 * Synopsys, Inc. unless otherwise expressly agreed to in writing between
11 * Synopsys and you. The Software IS NOT an item of Licensed Software or a
12 * Licensed Product under any End User Software License Agreement or
13 * Agreement for Licensed Products with Synopsys or any supplement thereto.
14 * Synopsys is a registered trademark of Synopsys, Inc. Other names included
15 * in the SOFTWARE may be the trademarks of their respective owners.
16 */
17
18 #include <linux/ethtool.h>
19 #include <linux/kernel.h>
20 #include <linux/netdevice.h>
21
22 #include "dwc-xlgmac.h"
23 #include "dwc-xlgmac-reg.h"
24
25 struct xlgmac_stats_desc {
26 char stat_string[ETH_GSTRING_LEN];
27 int stat_offset;
28 };
29
30 #define XLGMAC_STAT(str, var) \
31 { \
32 str, \
33 offsetof(struct xlgmac_pdata, stats.var), \
34 }
35
36 static const struct xlgmac_stats_desc xlgmac_gstring_stats[] = {
37 /* MMC TX counters */
38 XLGMAC_STAT("tx_bytes", txoctetcount_gb),
39 XLGMAC_STAT("tx_bytes_good", txoctetcount_g),
40 XLGMAC_STAT("tx_packets", txframecount_gb),
41 XLGMAC_STAT("tx_packets_good", txframecount_g),
42 XLGMAC_STAT("tx_unicast_packets", txunicastframes_gb),
43 XLGMAC_STAT("tx_broadcast_packets", txbroadcastframes_gb),
44 XLGMAC_STAT("tx_broadcast_packets_good", txbroadcastframes_g),
45 XLGMAC_STAT("tx_multicast_packets", txmulticastframes_gb),
46 XLGMAC_STAT("tx_multicast_packets_good", txmulticastframes_g),
47 XLGMAC_STAT("tx_vlan_packets_good", txvlanframes_g),
48 XLGMAC_STAT("tx_64_byte_packets", tx64octets_gb),
49 XLGMAC_STAT("tx_65_to_127_byte_packets", tx65to127octets_gb),
50 XLGMAC_STAT("tx_128_to_255_byte_packets", tx128to255octets_gb),
51 XLGMAC_STAT("tx_256_to_511_byte_packets", tx256to511octets_gb),
52 XLGMAC_STAT("tx_512_to_1023_byte_packets", tx512to1023octets_gb),
53 XLGMAC_STAT("tx_1024_to_max_byte_packets", tx1024tomaxoctets_gb),
54 XLGMAC_STAT("tx_underflow_errors", txunderflowerror),
55 XLGMAC_STAT("tx_pause_frames", txpauseframes),
56
57 /* MMC RX counters */
58 XLGMAC_STAT("rx_bytes", rxoctetcount_gb),
59 XLGMAC_STAT("rx_bytes_good", rxoctetcount_g),
60 XLGMAC_STAT("rx_packets", rxframecount_gb),
61 XLGMAC_STAT("rx_unicast_packets_good", rxunicastframes_g),
62 XLGMAC_STAT("rx_broadcast_packets_good", rxbroadcastframes_g),
63 XLGMAC_STAT("rx_multicast_packets_good", rxmulticastframes_g),
64 XLGMAC_STAT("rx_vlan_packets", rxvlanframes_gb),
65 XLGMAC_STAT("rx_64_byte_packets", rx64octets_gb),
66 XLGMAC_STAT("rx_65_to_127_byte_packets", rx65to127octets_gb),
67 XLGMAC_STAT("rx_128_to_255_byte_packets", rx128to255octets_gb),
68 XLGMAC_STAT("rx_256_to_511_byte_packets", rx256to511octets_gb),
69 XLGMAC_STAT("rx_512_to_1023_byte_packets", rx512to1023octets_gb),
70 XLGMAC_STAT("rx_1024_to_max_byte_packets", rx1024tomaxoctets_gb),
71 XLGMAC_STAT("rx_undersize_packets_good", rxundersize_g),
72 XLGMAC_STAT("rx_oversize_packets_good", rxoversize_g),
73 XLGMAC_STAT("rx_crc_errors", rxcrcerror),
74 XLGMAC_STAT("rx_crc_errors_small_packets", rxrunterror),
75 XLGMAC_STAT("rx_crc_errors_giant_packets", rxjabbererror),
76 XLGMAC_STAT("rx_length_errors", rxlengtherror),
77 XLGMAC_STAT("rx_out_of_range_errors", rxoutofrangetype),
78 XLGMAC_STAT("rx_fifo_overflow_errors", rxfifooverflow),
79 XLGMAC_STAT("rx_watchdog_errors", rxwatchdogerror),
80 XLGMAC_STAT("rx_pause_frames", rxpauseframes),
81
82 /* Extra counters */
83 XLGMAC_STAT("tx_tso_packets", tx_tso_packets),
84 XLGMAC_STAT("rx_split_header_packets", rx_split_header_packets),
85 XLGMAC_STAT("tx_process_stopped", tx_process_stopped),
86 XLGMAC_STAT("rx_process_stopped", rx_process_stopped),
87 XLGMAC_STAT("tx_buffer_unavailable", tx_buffer_unavailable),
88 XLGMAC_STAT("rx_buffer_unavailable", rx_buffer_unavailable),
89 XLGMAC_STAT("fatal_bus_error", fatal_bus_error),
90 XLGMAC_STAT("tx_vlan_packets", tx_vlan_packets),
91 XLGMAC_STAT("rx_vlan_packets", rx_vlan_packets),
92 XLGMAC_STAT("napi_poll_isr", napi_poll_isr),
93 XLGMAC_STAT("napi_poll_txtimer", napi_poll_txtimer),
94 };
95
96 #define XLGMAC_STATS_COUNT ARRAY_SIZE(xlgmac_gstring_stats)
97
xlgmac_ethtool_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * drvinfo)98 static void xlgmac_ethtool_get_drvinfo(struct net_device *netdev,
99 struct ethtool_drvinfo *drvinfo)
100 {
101 struct xlgmac_pdata *pdata = netdev_priv(netdev);
102 u32 ver = pdata->hw_feat.version;
103 u32 snpsver, devid, userver;
104
105 strlcpy(drvinfo->driver, pdata->drv_name, sizeof(drvinfo->driver));
106 strlcpy(drvinfo->version, pdata->drv_ver, sizeof(drvinfo->version));
107 strlcpy(drvinfo->bus_info, dev_name(pdata->dev),
108 sizeof(drvinfo->bus_info));
109 /* S|SNPSVER: Synopsys-defined Version
110 * D|DEVID: Indicates the Device family
111 * U|USERVER: User-defined Version
112 */
113 snpsver = XLGMAC_GET_REG_BITS(ver, MAC_VR_SNPSVER_POS,
114 MAC_VR_SNPSVER_LEN);
115 devid = XLGMAC_GET_REG_BITS(ver, MAC_VR_DEVID_POS,
116 MAC_VR_DEVID_LEN);
117 userver = XLGMAC_GET_REG_BITS(ver, MAC_VR_USERVER_POS,
118 MAC_VR_USERVER_LEN);
119 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
120 "S.D.U: %x.%x.%x", snpsver, devid, userver);
121 }
122
xlgmac_ethtool_get_msglevel(struct net_device * netdev)123 static u32 xlgmac_ethtool_get_msglevel(struct net_device *netdev)
124 {
125 struct xlgmac_pdata *pdata = netdev_priv(netdev);
126
127 return pdata->msg_enable;
128 }
129
xlgmac_ethtool_set_msglevel(struct net_device * netdev,u32 msglevel)130 static void xlgmac_ethtool_set_msglevel(struct net_device *netdev,
131 u32 msglevel)
132 {
133 struct xlgmac_pdata *pdata = netdev_priv(netdev);
134
135 pdata->msg_enable = msglevel;
136 }
137
xlgmac_ethtool_get_channels(struct net_device * netdev,struct ethtool_channels * channel)138 static void xlgmac_ethtool_get_channels(struct net_device *netdev,
139 struct ethtool_channels *channel)
140 {
141 struct xlgmac_pdata *pdata = netdev_priv(netdev);
142
143 channel->max_rx = XLGMAC_MAX_DMA_CHANNELS;
144 channel->max_tx = XLGMAC_MAX_DMA_CHANNELS;
145 channel->rx_count = pdata->rx_q_count;
146 channel->tx_count = pdata->tx_q_count;
147 }
148
xlgmac_ethtool_get_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec)149 static int xlgmac_ethtool_get_coalesce(struct net_device *netdev,
150 struct ethtool_coalesce *ec)
151 {
152 struct xlgmac_pdata *pdata = netdev_priv(netdev);
153
154 ec->rx_coalesce_usecs = pdata->rx_usecs;
155 ec->rx_max_coalesced_frames = pdata->rx_frames;
156 ec->tx_max_coalesced_frames = pdata->tx_frames;
157
158 return 0;
159 }
160
xlgmac_ethtool_set_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec)161 static int xlgmac_ethtool_set_coalesce(struct net_device *netdev,
162 struct ethtool_coalesce *ec)
163 {
164 struct xlgmac_pdata *pdata = netdev_priv(netdev);
165 struct xlgmac_hw_ops *hw_ops = &pdata->hw_ops;
166 unsigned int rx_frames, rx_riwt, rx_usecs;
167 unsigned int tx_frames;
168
169 rx_usecs = ec->rx_coalesce_usecs;
170 rx_riwt = hw_ops->usec_to_riwt(pdata, rx_usecs);
171 rx_frames = ec->rx_max_coalesced_frames;
172 tx_frames = ec->tx_max_coalesced_frames;
173
174 if ((rx_riwt > XLGMAC_MAX_DMA_RIWT) ||
175 (rx_riwt < XLGMAC_MIN_DMA_RIWT) ||
176 (rx_frames > pdata->rx_desc_count))
177 return -EINVAL;
178
179 if (tx_frames > pdata->tx_desc_count)
180 return -EINVAL;
181
182 pdata->rx_riwt = rx_riwt;
183 pdata->rx_usecs = rx_usecs;
184 pdata->rx_frames = rx_frames;
185 hw_ops->config_rx_coalesce(pdata);
186
187 pdata->tx_frames = tx_frames;
188 hw_ops->config_tx_coalesce(pdata);
189
190 return 0;
191 }
192
xlgmac_ethtool_get_strings(struct net_device * netdev,u32 stringset,u8 * data)193 static void xlgmac_ethtool_get_strings(struct net_device *netdev,
194 u32 stringset, u8 *data)
195 {
196 int i;
197
198 switch (stringset) {
199 case ETH_SS_STATS:
200 for (i = 0; i < XLGMAC_STATS_COUNT; i++) {
201 memcpy(data, xlgmac_gstring_stats[i].stat_string,
202 ETH_GSTRING_LEN);
203 data += ETH_GSTRING_LEN;
204 }
205 break;
206 default:
207 WARN_ON(1);
208 break;
209 }
210 }
211
xlgmac_ethtool_get_sset_count(struct net_device * netdev,int stringset)212 static int xlgmac_ethtool_get_sset_count(struct net_device *netdev,
213 int stringset)
214 {
215 int ret;
216
217 switch (stringset) {
218 case ETH_SS_STATS:
219 ret = XLGMAC_STATS_COUNT;
220 break;
221
222 default:
223 ret = -EOPNOTSUPP;
224 }
225
226 return ret;
227 }
228
xlgmac_ethtool_get_ethtool_stats(struct net_device * netdev,struct ethtool_stats * stats,u64 * data)229 static void xlgmac_ethtool_get_ethtool_stats(struct net_device *netdev,
230 struct ethtool_stats *stats,
231 u64 *data)
232 {
233 struct xlgmac_pdata *pdata = netdev_priv(netdev);
234 u8 *stat;
235 int i;
236
237 pdata->hw_ops.read_mmc_stats(pdata);
238 for (i = 0; i < XLGMAC_STATS_COUNT; i++) {
239 stat = (u8 *)pdata + xlgmac_gstring_stats[i].stat_offset;
240 *data++ = *(u64 *)stat;
241 }
242 }
243
244 static const struct ethtool_ops xlgmac_ethtool_ops = {
245 .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
246 ETHTOOL_COALESCE_MAX_FRAMES,
247 .get_drvinfo = xlgmac_ethtool_get_drvinfo,
248 .get_link = ethtool_op_get_link,
249 .get_msglevel = xlgmac_ethtool_get_msglevel,
250 .set_msglevel = xlgmac_ethtool_set_msglevel,
251 .get_channels = xlgmac_ethtool_get_channels,
252 .get_coalesce = xlgmac_ethtool_get_coalesce,
253 .set_coalesce = xlgmac_ethtool_set_coalesce,
254 .get_strings = xlgmac_ethtool_get_strings,
255 .get_sset_count = xlgmac_ethtool_get_sset_count,
256 .get_ethtool_stats = xlgmac_ethtool_get_ethtool_stats,
257 };
258
xlgmac_get_ethtool_ops(void)259 const struct ethtool_ops *xlgmac_get_ethtool_ops(void)
260 {
261 return &xlgmac_ethtool_ops;
262 }
263
