1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* Applied Micro X-Gene SoC Ethernet Driver
3  *
4  * Copyright (c) 2014, Applied Micro Circuits Corporation
5  * Authors: Iyappan Subramanian <isubramanian@apm.com>
6  */
7 
8 #include <linux/ethtool.h>
9 #include "xgene_enet_main.h"
10 
11 struct xgene_gstrings_stats {
12 	char name[ETH_GSTRING_LEN];
13 	int offset;
14 	u32 addr;
15 	u32 mask;
16 };
17 
18 #define XGENE_STAT(m) { #m, offsetof(struct rtnl_link_stats64, m) }
19 #define XGENE_EXTD_STAT(s, a, m)		\
20 		{			\
21 		.name = #s,		\
22 		.addr = a ## _ADDR,	\
23 		.mask = m		\
24 		}
25 
26 static const struct xgene_gstrings_stats gstrings_stats[] = {
27 	XGENE_STAT(rx_packets),
28 	XGENE_STAT(tx_packets),
29 	XGENE_STAT(rx_bytes),
30 	XGENE_STAT(tx_bytes),
31 	XGENE_STAT(rx_errors),
32 	XGENE_STAT(tx_errors),
33 	XGENE_STAT(rx_length_errors),
34 	XGENE_STAT(rx_crc_errors),
35 	XGENE_STAT(rx_frame_errors),
36 	XGENE_STAT(rx_fifo_errors)
37 };
38 
39 static const struct xgene_gstrings_stats gstrings_extd_stats[] = {
40 	XGENE_EXTD_STAT(tx_rx_64b_frame_cntr, TR64, 31),
41 	XGENE_EXTD_STAT(tx_rx_127b_frame_cntr, TR127, 31),
42 	XGENE_EXTD_STAT(tx_rx_255b_frame_cntr, TR255, 31),
43 	XGENE_EXTD_STAT(tx_rx_511b_frame_cntr, TR511, 31),
44 	XGENE_EXTD_STAT(tx_rx_1023b_frame_cntr, TR1K, 31),
45 	XGENE_EXTD_STAT(tx_rx_1518b_frame_cntr, TRMAX, 31),
46 	XGENE_EXTD_STAT(tx_rx_1522b_frame_cntr, TRMGV, 31),
47 	XGENE_EXTD_STAT(rx_fcs_error_cntr, RFCS, 16),
48 	XGENE_EXTD_STAT(rx_multicast_pkt_cntr, RMCA, 31),
49 	XGENE_EXTD_STAT(rx_broadcast_pkt_cntr, RBCA, 31),
50 	XGENE_EXTD_STAT(rx_ctrl_frame_pkt_cntr, RXCF, 16),
51 	XGENE_EXTD_STAT(rx_pause_frame_pkt_cntr, RXPF, 16),
52 	XGENE_EXTD_STAT(rx_unk_opcode_cntr, RXUO, 16),
53 	XGENE_EXTD_STAT(rx_align_err_cntr, RALN, 16),
54 	XGENE_EXTD_STAT(rx_frame_len_err_cntr, RFLR, 16),
55 	XGENE_EXTD_STAT(rx_frame_len_err_recov_cntr, DUMP, 0),
56 	XGENE_EXTD_STAT(rx_code_err_cntr, RCDE, 16),
57 	XGENE_EXTD_STAT(rx_carrier_sense_err_cntr, RCSE, 16),
58 	XGENE_EXTD_STAT(rx_undersize_pkt_cntr, RUND, 16),
59 	XGENE_EXTD_STAT(rx_oversize_pkt_cntr, ROVR, 16),
60 	XGENE_EXTD_STAT(rx_fragments_cntr, RFRG, 16),
61 	XGENE_EXTD_STAT(rx_jabber_cntr, RJBR, 16),
62 	XGENE_EXTD_STAT(rx_jabber_recov_cntr, DUMP, 0),
63 	XGENE_EXTD_STAT(rx_dropped_pkt_cntr, RDRP, 16),
64 	XGENE_EXTD_STAT(rx_overrun_cntr, DUMP, 0),
65 	XGENE_EXTD_STAT(tx_multicast_pkt_cntr, TMCA, 31),
66 	XGENE_EXTD_STAT(tx_broadcast_pkt_cntr, TBCA, 31),
67 	XGENE_EXTD_STAT(tx_pause_ctrl_frame_cntr, TXPF, 16),
68 	XGENE_EXTD_STAT(tx_defer_pkt_cntr, TDFR, 31),
69 	XGENE_EXTD_STAT(tx_excv_defer_pkt_cntr, TEDF, 31),
70 	XGENE_EXTD_STAT(tx_single_col_pkt_cntr, TSCL, 31),
71 	XGENE_EXTD_STAT(tx_multi_col_pkt_cntr, TMCL, 31),
72 	XGENE_EXTD_STAT(tx_late_col_pkt_cntr, TLCL, 31),
73 	XGENE_EXTD_STAT(tx_excv_col_pkt_cntr, TXCL, 31),
74 	XGENE_EXTD_STAT(tx_total_col_cntr, TNCL, 31),
75 	XGENE_EXTD_STAT(tx_pause_frames_hnrd_cntr, TPFH, 16),
76 	XGENE_EXTD_STAT(tx_drop_frame_cntr, TDRP, 16),
77 	XGENE_EXTD_STAT(tx_jabber_frame_cntr, TJBR, 12),
78 	XGENE_EXTD_STAT(tx_fcs_error_cntr, TFCS, 12),
79 	XGENE_EXTD_STAT(tx_ctrl_frame_cntr, TXCF, 12),
80 	XGENE_EXTD_STAT(tx_oversize_frame_cntr, TOVR, 12),
81 	XGENE_EXTD_STAT(tx_undersize_frame_cntr, TUND, 12),
82 	XGENE_EXTD_STAT(tx_fragments_cntr, TFRG, 12),
83 	XGENE_EXTD_STAT(tx_underrun_cntr, DUMP, 0)
84 };
85 
86 #define XGENE_STATS_LEN		ARRAY_SIZE(gstrings_stats)
87 #define XGENE_EXTD_STATS_LEN	ARRAY_SIZE(gstrings_extd_stats)
88 #define RFCS_IDX		7
89 #define RALN_IDX		13
90 #define RFLR_IDX		14
91 #define FALSE_RFLR_IDX		15
92 #define RUND_IDX		18
93 #define FALSE_RJBR_IDX		22
94 #define RX_OVERRUN_IDX		24
95 #define TFCS_IDX		38
96 #define TFRG_IDX		42
97 #define TX_UNDERRUN_IDX		43
98 
99 static void xgene_get_drvinfo(struct net_device *ndev,
100 			      struct ethtool_drvinfo *info)
101 {
102 	struct xgene_enet_pdata *pdata = netdev_priv(ndev);
103 	struct platform_device *pdev = pdata->pdev;
104 
105 	strcpy(info->driver, "xgene_enet");
106 	sprintf(info->bus_info, "%s", pdev->name);
107 }
108 
109 static int xgene_get_link_ksettings(struct net_device *ndev,
110 				    struct ethtool_link_ksettings *cmd)
111 {
112 	struct xgene_enet_pdata *pdata = netdev_priv(ndev);
113 	struct phy_device *phydev = ndev->phydev;
114 	u32 supported;
115 
116 	if (phy_interface_mode_is_rgmii(pdata->phy_mode)) {
117 		if (phydev == NULL)
118 			return -ENODEV;
119 
120 		phy_ethtool_ksettings_get(phydev, cmd);
121 
122 		return 0;
123 	} else if (pdata->phy_mode == PHY_INTERFACE_MODE_SGMII) {
124 		if (pdata->mdio_driver) {
125 			if (!phydev)
126 				return -ENODEV;
127 
128 			phy_ethtool_ksettings_get(phydev, cmd);
129 
130 			return 0;
131 		}
132 
133 		supported = SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg |
134 			SUPPORTED_MII;
135 		ethtool_convert_legacy_u32_to_link_mode(
136 			cmd->link_modes.supported,
137 			supported);
138 		ethtool_convert_legacy_u32_to_link_mode(
139 			cmd->link_modes.advertising,
140 			supported);
141 
142 		cmd->base.speed = SPEED_1000;
143 		cmd->base.duplex = DUPLEX_FULL;
144 		cmd->base.port = PORT_MII;
145 		cmd->base.autoneg = AUTONEG_ENABLE;
146 	} else {
147 		supported = SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE;
148 		ethtool_convert_legacy_u32_to_link_mode(
149 			cmd->link_modes.supported,
150 			supported);
151 		ethtool_convert_legacy_u32_to_link_mode(
152 			cmd->link_modes.advertising,
153 			supported);
154 
155 		cmd->base.speed = SPEED_10000;
156 		cmd->base.duplex = DUPLEX_FULL;
157 		cmd->base.port = PORT_FIBRE;
158 		cmd->base.autoneg = AUTONEG_DISABLE;
159 	}
160 
161 	return 0;
162 }
163 
164 static int xgene_set_link_ksettings(struct net_device *ndev,
165 				    const struct ethtool_link_ksettings *cmd)
166 {
167 	struct xgene_enet_pdata *pdata = netdev_priv(ndev);
168 	struct phy_device *phydev = ndev->phydev;
169 
170 	if (phy_interface_mode_is_rgmii(pdata->phy_mode)) {
171 		if (!phydev)
172 			return -ENODEV;
173 
174 		return phy_ethtool_ksettings_set(phydev, cmd);
175 	}
176 
177 	if (pdata->phy_mode == PHY_INTERFACE_MODE_SGMII) {
178 		if (pdata->mdio_driver) {
179 			if (!phydev)
180 				return -ENODEV;
181 
182 			return phy_ethtool_ksettings_set(phydev, cmd);
183 		}
184 	}
185 
186 	return -EINVAL;
187 }
188 
189 static void xgene_get_strings(struct net_device *ndev, u32 stringset, u8 *data)
190 {
191 	int i;
192 	u8 *p = data;
193 
194 	if (stringset != ETH_SS_STATS)
195 		return;
196 
197 	for (i = 0; i < XGENE_STATS_LEN; i++) {
198 		memcpy(p, gstrings_stats[i].name, ETH_GSTRING_LEN);
199 		p += ETH_GSTRING_LEN;
200 	}
201 
202 	for (i = 0; i < XGENE_EXTD_STATS_LEN; i++) {
203 		memcpy(p, gstrings_extd_stats[i].name, ETH_GSTRING_LEN);
204 		p += ETH_GSTRING_LEN;
205 	}
206 }
207 
208 static int xgene_get_sset_count(struct net_device *ndev, int sset)
209 {
210 	if (sset != ETH_SS_STATS)
211 		return -EINVAL;
212 
213 	return XGENE_STATS_LEN + XGENE_EXTD_STATS_LEN;
214 }
215 
216 static void xgene_get_extd_stats(struct xgene_enet_pdata *pdata)
217 {
218 	u32 rx_drop, tx_drop;
219 	u32 mask, tmp;
220 	int i;
221 
222 	for (i = 0; i < XGENE_EXTD_STATS_LEN; i++) {
223 		tmp = xgene_enet_rd_stat(pdata, gstrings_extd_stats[i].addr);
224 		if (gstrings_extd_stats[i].mask) {
225 			mask = GENMASK(gstrings_extd_stats[i].mask - 1, 0);
226 			pdata->extd_stats[i] += (tmp & mask);
227 		}
228 	}
229 
230 	if (pdata->phy_mode == PHY_INTERFACE_MODE_XGMII) {
231 		/* Errata 10GE_10 - SW should intepret RALN as 0 */
232 		pdata->extd_stats[RALN_IDX] = 0;
233 	} else {
234 		/* Errata ENET_15 - Fixes RFCS, RFLR, TFCS counter */
235 		pdata->extd_stats[RFCS_IDX] -= pdata->extd_stats[RALN_IDX];
236 		pdata->extd_stats[RFLR_IDX] -= pdata->extd_stats[RUND_IDX];
237 		pdata->extd_stats[TFCS_IDX] -= pdata->extd_stats[TFRG_IDX];
238 	}
239 
240 	pdata->mac_ops->get_drop_cnt(pdata, &rx_drop, &tx_drop);
241 	pdata->extd_stats[RX_OVERRUN_IDX] += rx_drop;
242 	pdata->extd_stats[TX_UNDERRUN_IDX] += tx_drop;
243 
244 	/* Errata 10GE_8 -  Update Frame recovered from Errata 10GE_8/ENET_11 */
245 	pdata->extd_stats[FALSE_RFLR_IDX] = pdata->false_rflr;
246 	/* Errata ENET_15 - Jabber Frame recov'ed from Errata 10GE_10/ENET_15 */
247 	pdata->extd_stats[FALSE_RJBR_IDX] = pdata->vlan_rjbr;
248 }
249 
250 int xgene_extd_stats_init(struct xgene_enet_pdata *pdata)
251 {
252 	pdata->extd_stats = devm_kmalloc_array(&pdata->pdev->dev,
253 			XGENE_EXTD_STATS_LEN, sizeof(u64), GFP_KERNEL);
254 	if (!pdata->extd_stats)
255 		return -ENOMEM;
256 
257 	xgene_get_extd_stats(pdata);
258 	memset(pdata->extd_stats, 0, XGENE_EXTD_STATS_LEN * sizeof(u64));
259 
260 	return 0;
261 }
262 
263 static void xgene_get_ethtool_stats(struct net_device *ndev,
264 				    struct ethtool_stats *dummy,
265 				    u64 *data)
266 {
267 	struct xgene_enet_pdata *pdata = netdev_priv(ndev);
268 	struct rtnl_link_stats64 stats;
269 	int i;
270 
271 	dev_get_stats(ndev, &stats);
272 	for (i = 0; i < XGENE_STATS_LEN; i++)
273 		data[i] = *(u64 *)((char *)&stats + gstrings_stats[i].offset);
274 
275 	xgene_get_extd_stats(pdata);
276 	for (i = 0; i < XGENE_EXTD_STATS_LEN; i++)
277 		data[i + XGENE_STATS_LEN] = pdata->extd_stats[i];
278 }
279 
280 static void xgene_get_pauseparam(struct net_device *ndev,
281 				 struct ethtool_pauseparam *pp)
282 {
283 	struct xgene_enet_pdata *pdata = netdev_priv(ndev);
284 
285 	pp->autoneg = pdata->pause_autoneg;
286 	pp->tx_pause = pdata->tx_pause;
287 	pp->rx_pause = pdata->rx_pause;
288 }
289 
290 static int xgene_set_pauseparam(struct net_device *ndev,
291 				struct ethtool_pauseparam *pp)
292 {
293 	struct xgene_enet_pdata *pdata = netdev_priv(ndev);
294 	struct phy_device *phydev = ndev->phydev;
295 
296 	if (phy_interface_mode_is_rgmii(pdata->phy_mode) ||
297 	    pdata->phy_mode == PHY_INTERFACE_MODE_SGMII) {
298 		if (!phydev)
299 			return -EINVAL;
300 
301 		if (!phy_validate_pause(phydev, pp))
302 			return -EINVAL;
303 
304 		pdata->pause_autoneg = pp->autoneg;
305 		pdata->tx_pause = pp->tx_pause;
306 		pdata->rx_pause = pp->rx_pause;
307 
308 		phy_set_asym_pause(phydev, pp->rx_pause,  pp->tx_pause);
309 
310 		if (!pp->autoneg) {
311 			pdata->mac_ops->flowctl_tx(pdata, pdata->tx_pause);
312 			pdata->mac_ops->flowctl_rx(pdata, pdata->rx_pause);
313 		}
314 	} else {
315 		if (pp->autoneg)
316 			return -EINVAL;
317 
318 		pdata->tx_pause = pp->tx_pause;
319 		pdata->rx_pause = pp->rx_pause;
320 
321 		pdata->mac_ops->flowctl_tx(pdata, pdata->tx_pause);
322 		pdata->mac_ops->flowctl_rx(pdata, pdata->rx_pause);
323 	}
324 
325 	return 0;
326 }
327 
328 static const struct ethtool_ops xgene_ethtool_ops = {
329 	.get_drvinfo = xgene_get_drvinfo,
330 	.get_link = ethtool_op_get_link,
331 	.get_strings = xgene_get_strings,
332 	.get_sset_count = xgene_get_sset_count,
333 	.get_ethtool_stats = xgene_get_ethtool_stats,
334 	.get_link_ksettings = xgene_get_link_ksettings,
335 	.set_link_ksettings = xgene_set_link_ksettings,
336 	.get_pauseparam = xgene_get_pauseparam,
337 	.set_pauseparam = xgene_set_pauseparam
338 };
339 
340 void xgene_enet_set_ethtool_ops(struct net_device *ndev)
341 {
342 	ndev->ethtool_ops = &xgene_ethtool_ops;
343 }
344