xref: /linux/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c (revision 4f58e6dceb0e44ca8f21568ed81e1df24e55964c)
1 /*******************************************************************************
2   STMMAC Ethtool support
3 
4   Copyright (C) 2007-2009  STMicroelectronics Ltd
5 
6   This program is free software; you can redistribute it and/or modify it
7   under the terms and conditions of the GNU General Public License,
8   version 2, as published by the Free Software Foundation.
9 
10   This program is distributed in the hope it will be useful, but WITHOUT
11   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
13   more details.
14 
15   You should have received a copy of the GNU General Public License along with
16   this program; if not, write to the Free Software Foundation, Inc.,
17   51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18 
19   The full GNU General Public License is included in this distribution in
20   the file called "COPYING".
21 
22   Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
23 *******************************************************************************/
24 
25 #include <linux/etherdevice.h>
26 #include <linux/ethtool.h>
27 #include <linux/interrupt.h>
28 #include <linux/mii.h>
29 #include <linux/phy.h>
30 #include <linux/net_tstamp.h>
31 #include <asm/io.h>
32 
33 #include "stmmac.h"
34 #include "dwmac_dma.h"
35 
36 #define REG_SPACE_SIZE	0x1054
37 #define MAC100_ETHTOOL_NAME	"st_mac100"
38 #define GMAC_ETHTOOL_NAME	"st_gmac"
39 
40 struct stmmac_stats {
41 	char stat_string[ETH_GSTRING_LEN];
42 	int sizeof_stat;
43 	int stat_offset;
44 };
45 
46 #define STMMAC_STAT(m)	\
47 	{ #m, FIELD_SIZEOF(struct stmmac_extra_stats, m),	\
48 	offsetof(struct stmmac_priv, xstats.m)}
49 
50 static const struct stmmac_stats stmmac_gstrings_stats[] = {
51 	/* Transmit errors */
52 	STMMAC_STAT(tx_underflow),
53 	STMMAC_STAT(tx_carrier),
54 	STMMAC_STAT(tx_losscarrier),
55 	STMMAC_STAT(vlan_tag),
56 	STMMAC_STAT(tx_deferred),
57 	STMMAC_STAT(tx_vlan),
58 	STMMAC_STAT(tx_jabber),
59 	STMMAC_STAT(tx_frame_flushed),
60 	STMMAC_STAT(tx_payload_error),
61 	STMMAC_STAT(tx_ip_header_error),
62 	/* Receive errors */
63 	STMMAC_STAT(rx_desc),
64 	STMMAC_STAT(sa_filter_fail),
65 	STMMAC_STAT(overflow_error),
66 	STMMAC_STAT(ipc_csum_error),
67 	STMMAC_STAT(rx_collision),
68 	STMMAC_STAT(rx_crc),
69 	STMMAC_STAT(dribbling_bit),
70 	STMMAC_STAT(rx_length),
71 	STMMAC_STAT(rx_mii),
72 	STMMAC_STAT(rx_multicast),
73 	STMMAC_STAT(rx_gmac_overflow),
74 	STMMAC_STAT(rx_watchdog),
75 	STMMAC_STAT(da_rx_filter_fail),
76 	STMMAC_STAT(sa_rx_filter_fail),
77 	STMMAC_STAT(rx_missed_cntr),
78 	STMMAC_STAT(rx_overflow_cntr),
79 	STMMAC_STAT(rx_vlan),
80 	/* Tx/Rx IRQ error info */
81 	STMMAC_STAT(tx_undeflow_irq),
82 	STMMAC_STAT(tx_process_stopped_irq),
83 	STMMAC_STAT(tx_jabber_irq),
84 	STMMAC_STAT(rx_overflow_irq),
85 	STMMAC_STAT(rx_buf_unav_irq),
86 	STMMAC_STAT(rx_process_stopped_irq),
87 	STMMAC_STAT(rx_watchdog_irq),
88 	STMMAC_STAT(tx_early_irq),
89 	STMMAC_STAT(fatal_bus_error_irq),
90 	/* Tx/Rx IRQ Events */
91 	STMMAC_STAT(rx_early_irq),
92 	STMMAC_STAT(threshold),
93 	STMMAC_STAT(tx_pkt_n),
94 	STMMAC_STAT(rx_pkt_n),
95 	STMMAC_STAT(normal_irq_n),
96 	STMMAC_STAT(rx_normal_irq_n),
97 	STMMAC_STAT(napi_poll),
98 	STMMAC_STAT(tx_normal_irq_n),
99 	STMMAC_STAT(tx_clean),
100 	STMMAC_STAT(tx_set_ic_bit),
101 	STMMAC_STAT(irq_receive_pmt_irq_n),
102 	/* MMC info */
103 	STMMAC_STAT(mmc_tx_irq_n),
104 	STMMAC_STAT(mmc_rx_irq_n),
105 	STMMAC_STAT(mmc_rx_csum_offload_irq_n),
106 	/* EEE */
107 	STMMAC_STAT(irq_tx_path_in_lpi_mode_n),
108 	STMMAC_STAT(irq_tx_path_exit_lpi_mode_n),
109 	STMMAC_STAT(irq_rx_path_in_lpi_mode_n),
110 	STMMAC_STAT(irq_rx_path_exit_lpi_mode_n),
111 	STMMAC_STAT(phy_eee_wakeup_error_n),
112 	/* Extended RDES status */
113 	STMMAC_STAT(ip_hdr_err),
114 	STMMAC_STAT(ip_payload_err),
115 	STMMAC_STAT(ip_csum_bypassed),
116 	STMMAC_STAT(ipv4_pkt_rcvd),
117 	STMMAC_STAT(ipv6_pkt_rcvd),
118 	STMMAC_STAT(rx_msg_type_ext_no_ptp),
119 	STMMAC_STAT(rx_msg_type_sync),
120 	STMMAC_STAT(rx_msg_type_follow_up),
121 	STMMAC_STAT(rx_msg_type_delay_req),
122 	STMMAC_STAT(rx_msg_type_delay_resp),
123 	STMMAC_STAT(rx_msg_type_pdelay_req),
124 	STMMAC_STAT(rx_msg_type_pdelay_resp),
125 	STMMAC_STAT(rx_msg_type_pdelay_follow_up),
126 	STMMAC_STAT(ptp_frame_type),
127 	STMMAC_STAT(ptp_ver),
128 	STMMAC_STAT(timestamp_dropped),
129 	STMMAC_STAT(av_pkt_rcvd),
130 	STMMAC_STAT(av_tagged_pkt_rcvd),
131 	STMMAC_STAT(vlan_tag_priority_val),
132 	STMMAC_STAT(l3_filter_match),
133 	STMMAC_STAT(l4_filter_match),
134 	STMMAC_STAT(l3_l4_filter_no_match),
135 	/* PCS */
136 	STMMAC_STAT(irq_pcs_ane_n),
137 	STMMAC_STAT(irq_pcs_link_n),
138 	STMMAC_STAT(irq_rgmii_n),
139 	/* DEBUG */
140 	STMMAC_STAT(mtl_tx_status_fifo_full),
141 	STMMAC_STAT(mtl_tx_fifo_not_empty),
142 	STMMAC_STAT(mmtl_fifo_ctrl),
143 	STMMAC_STAT(mtl_tx_fifo_read_ctrl_write),
144 	STMMAC_STAT(mtl_tx_fifo_read_ctrl_wait),
145 	STMMAC_STAT(mtl_tx_fifo_read_ctrl_read),
146 	STMMAC_STAT(mtl_tx_fifo_read_ctrl_idle),
147 	STMMAC_STAT(mac_tx_in_pause),
148 	STMMAC_STAT(mac_tx_frame_ctrl_xfer),
149 	STMMAC_STAT(mac_tx_frame_ctrl_idle),
150 	STMMAC_STAT(mac_tx_frame_ctrl_wait),
151 	STMMAC_STAT(mac_tx_frame_ctrl_pause),
152 	STMMAC_STAT(mac_gmii_tx_proto_engine),
153 	STMMAC_STAT(mtl_rx_fifo_fill_level_full),
154 	STMMAC_STAT(mtl_rx_fifo_fill_above_thresh),
155 	STMMAC_STAT(mtl_rx_fifo_fill_below_thresh),
156 	STMMAC_STAT(mtl_rx_fifo_fill_level_empty),
157 	STMMAC_STAT(mtl_rx_fifo_read_ctrl_flush),
158 	STMMAC_STAT(mtl_rx_fifo_read_ctrl_read_data),
159 	STMMAC_STAT(mtl_rx_fifo_read_ctrl_status),
160 	STMMAC_STAT(mtl_rx_fifo_read_ctrl_idle),
161 	STMMAC_STAT(mtl_rx_fifo_ctrl_active),
162 	STMMAC_STAT(mac_rx_frame_ctrl_fifo),
163 	STMMAC_STAT(mac_gmii_rx_proto_engine),
164 	/* TSO */
165 	STMMAC_STAT(tx_tso_frames),
166 	STMMAC_STAT(tx_tso_nfrags),
167 };
168 #define STMMAC_STATS_LEN ARRAY_SIZE(stmmac_gstrings_stats)
169 
170 /* HW MAC Management counters (if supported) */
171 #define STMMAC_MMC_STAT(m)	\
172 	{ #m, FIELD_SIZEOF(struct stmmac_counters, m),	\
173 	offsetof(struct stmmac_priv, mmc.m)}
174 
175 static const struct stmmac_stats stmmac_mmc[] = {
176 	STMMAC_MMC_STAT(mmc_tx_octetcount_gb),
177 	STMMAC_MMC_STAT(mmc_tx_framecount_gb),
178 	STMMAC_MMC_STAT(mmc_tx_broadcastframe_g),
179 	STMMAC_MMC_STAT(mmc_tx_multicastframe_g),
180 	STMMAC_MMC_STAT(mmc_tx_64_octets_gb),
181 	STMMAC_MMC_STAT(mmc_tx_65_to_127_octets_gb),
182 	STMMAC_MMC_STAT(mmc_tx_128_to_255_octets_gb),
183 	STMMAC_MMC_STAT(mmc_tx_256_to_511_octets_gb),
184 	STMMAC_MMC_STAT(mmc_tx_512_to_1023_octets_gb),
185 	STMMAC_MMC_STAT(mmc_tx_1024_to_max_octets_gb),
186 	STMMAC_MMC_STAT(mmc_tx_unicast_gb),
187 	STMMAC_MMC_STAT(mmc_tx_multicast_gb),
188 	STMMAC_MMC_STAT(mmc_tx_broadcast_gb),
189 	STMMAC_MMC_STAT(mmc_tx_underflow_error),
190 	STMMAC_MMC_STAT(mmc_tx_singlecol_g),
191 	STMMAC_MMC_STAT(mmc_tx_multicol_g),
192 	STMMAC_MMC_STAT(mmc_tx_deferred),
193 	STMMAC_MMC_STAT(mmc_tx_latecol),
194 	STMMAC_MMC_STAT(mmc_tx_exesscol),
195 	STMMAC_MMC_STAT(mmc_tx_carrier_error),
196 	STMMAC_MMC_STAT(mmc_tx_octetcount_g),
197 	STMMAC_MMC_STAT(mmc_tx_framecount_g),
198 	STMMAC_MMC_STAT(mmc_tx_excessdef),
199 	STMMAC_MMC_STAT(mmc_tx_pause_frame),
200 	STMMAC_MMC_STAT(mmc_tx_vlan_frame_g),
201 	STMMAC_MMC_STAT(mmc_rx_framecount_gb),
202 	STMMAC_MMC_STAT(mmc_rx_octetcount_gb),
203 	STMMAC_MMC_STAT(mmc_rx_octetcount_g),
204 	STMMAC_MMC_STAT(mmc_rx_broadcastframe_g),
205 	STMMAC_MMC_STAT(mmc_rx_multicastframe_g),
206 	STMMAC_MMC_STAT(mmc_rx_crc_error),
207 	STMMAC_MMC_STAT(mmc_rx_align_error),
208 	STMMAC_MMC_STAT(mmc_rx_run_error),
209 	STMMAC_MMC_STAT(mmc_rx_jabber_error),
210 	STMMAC_MMC_STAT(mmc_rx_undersize_g),
211 	STMMAC_MMC_STAT(mmc_rx_oversize_g),
212 	STMMAC_MMC_STAT(mmc_rx_64_octets_gb),
213 	STMMAC_MMC_STAT(mmc_rx_65_to_127_octets_gb),
214 	STMMAC_MMC_STAT(mmc_rx_128_to_255_octets_gb),
215 	STMMAC_MMC_STAT(mmc_rx_256_to_511_octets_gb),
216 	STMMAC_MMC_STAT(mmc_rx_512_to_1023_octets_gb),
217 	STMMAC_MMC_STAT(mmc_rx_1024_to_max_octets_gb),
218 	STMMAC_MMC_STAT(mmc_rx_unicast_g),
219 	STMMAC_MMC_STAT(mmc_rx_length_error),
220 	STMMAC_MMC_STAT(mmc_rx_autofrangetype),
221 	STMMAC_MMC_STAT(mmc_rx_pause_frames),
222 	STMMAC_MMC_STAT(mmc_rx_fifo_overflow),
223 	STMMAC_MMC_STAT(mmc_rx_vlan_frames_gb),
224 	STMMAC_MMC_STAT(mmc_rx_watchdog_error),
225 	STMMAC_MMC_STAT(mmc_rx_ipc_intr_mask),
226 	STMMAC_MMC_STAT(mmc_rx_ipc_intr),
227 	STMMAC_MMC_STAT(mmc_rx_ipv4_gd),
228 	STMMAC_MMC_STAT(mmc_rx_ipv4_hderr),
229 	STMMAC_MMC_STAT(mmc_rx_ipv4_nopay),
230 	STMMAC_MMC_STAT(mmc_rx_ipv4_frag),
231 	STMMAC_MMC_STAT(mmc_rx_ipv4_udsbl),
232 	STMMAC_MMC_STAT(mmc_rx_ipv4_gd_octets),
233 	STMMAC_MMC_STAT(mmc_rx_ipv4_hderr_octets),
234 	STMMAC_MMC_STAT(mmc_rx_ipv4_nopay_octets),
235 	STMMAC_MMC_STAT(mmc_rx_ipv4_frag_octets),
236 	STMMAC_MMC_STAT(mmc_rx_ipv4_udsbl_octets),
237 	STMMAC_MMC_STAT(mmc_rx_ipv6_gd_octets),
238 	STMMAC_MMC_STAT(mmc_rx_ipv6_hderr_octets),
239 	STMMAC_MMC_STAT(mmc_rx_ipv6_nopay_octets),
240 	STMMAC_MMC_STAT(mmc_rx_ipv6_gd),
241 	STMMAC_MMC_STAT(mmc_rx_ipv6_hderr),
242 	STMMAC_MMC_STAT(mmc_rx_ipv6_nopay),
243 	STMMAC_MMC_STAT(mmc_rx_udp_gd),
244 	STMMAC_MMC_STAT(mmc_rx_udp_err),
245 	STMMAC_MMC_STAT(mmc_rx_tcp_gd),
246 	STMMAC_MMC_STAT(mmc_rx_tcp_err),
247 	STMMAC_MMC_STAT(mmc_rx_icmp_gd),
248 	STMMAC_MMC_STAT(mmc_rx_icmp_err),
249 	STMMAC_MMC_STAT(mmc_rx_udp_gd_octets),
250 	STMMAC_MMC_STAT(mmc_rx_udp_err_octets),
251 	STMMAC_MMC_STAT(mmc_rx_tcp_gd_octets),
252 	STMMAC_MMC_STAT(mmc_rx_tcp_err_octets),
253 	STMMAC_MMC_STAT(mmc_rx_icmp_gd_octets),
254 	STMMAC_MMC_STAT(mmc_rx_icmp_err_octets),
255 };
256 #define STMMAC_MMC_STATS_LEN ARRAY_SIZE(stmmac_mmc)
257 
258 static void stmmac_ethtool_getdrvinfo(struct net_device *dev,
259 				      struct ethtool_drvinfo *info)
260 {
261 	struct stmmac_priv *priv = netdev_priv(dev);
262 
263 	if (priv->plat->has_gmac)
264 		strlcpy(info->driver, GMAC_ETHTOOL_NAME, sizeof(info->driver));
265 	else
266 		strlcpy(info->driver, MAC100_ETHTOOL_NAME,
267 			sizeof(info->driver));
268 
269 	strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version));
270 }
271 
272 static int stmmac_ethtool_get_link_ksettings(struct net_device *dev,
273 					     struct ethtool_link_ksettings *cmd)
274 {
275 	struct stmmac_priv *priv = netdev_priv(dev);
276 	struct phy_device *phy = dev->phydev;
277 	int rc;
278 
279 	if (priv->hw->pcs & STMMAC_PCS_RGMII ||
280 	    priv->hw->pcs & STMMAC_PCS_SGMII) {
281 		struct rgmii_adv adv;
282 		u32 supported, advertising, lp_advertising;
283 
284 		if (!priv->xstats.pcs_link) {
285 			cmd->base.speed = SPEED_UNKNOWN;
286 			cmd->base.duplex = DUPLEX_UNKNOWN;
287 			return 0;
288 		}
289 		cmd->base.duplex = priv->xstats.pcs_duplex;
290 
291 		cmd->base.speed = priv->xstats.pcs_speed;
292 
293 		/* Get and convert ADV/LP_ADV from the HW AN registers */
294 		if (!priv->hw->mac->pcs_get_adv_lp)
295 			return -EOPNOTSUPP;	/* should never happen indeed */
296 
297 		priv->hw->mac->pcs_get_adv_lp(priv->ioaddr, &adv);
298 
299 		/* Encoding of PSE bits is defined in 802.3z, 37.2.1.4 */
300 
301 		ethtool_convert_link_mode_to_legacy_u32(
302 			&supported, cmd->link_modes.supported);
303 		ethtool_convert_link_mode_to_legacy_u32(
304 			&advertising, cmd->link_modes.advertising);
305 		ethtool_convert_link_mode_to_legacy_u32(
306 			&lp_advertising, cmd->link_modes.lp_advertising);
307 
308 		if (adv.pause & STMMAC_PCS_PAUSE)
309 			advertising |= ADVERTISED_Pause;
310 		if (adv.pause & STMMAC_PCS_ASYM_PAUSE)
311 			advertising |= ADVERTISED_Asym_Pause;
312 		if (adv.lp_pause & STMMAC_PCS_PAUSE)
313 			lp_advertising |= ADVERTISED_Pause;
314 		if (adv.lp_pause & STMMAC_PCS_ASYM_PAUSE)
315 			lp_advertising |= ADVERTISED_Asym_Pause;
316 
317 		/* Reg49[3] always set because ANE is always supported */
318 		cmd->base.autoneg = ADVERTISED_Autoneg;
319 		supported |= SUPPORTED_Autoneg;
320 		advertising |= ADVERTISED_Autoneg;
321 		lp_advertising |= ADVERTISED_Autoneg;
322 
323 		if (adv.duplex) {
324 			supported |= (SUPPORTED_1000baseT_Full |
325 				      SUPPORTED_100baseT_Full |
326 				      SUPPORTED_10baseT_Full);
327 			advertising |= (ADVERTISED_1000baseT_Full |
328 					ADVERTISED_100baseT_Full |
329 					ADVERTISED_10baseT_Full);
330 		} else {
331 			supported |= (SUPPORTED_1000baseT_Half |
332 				      SUPPORTED_100baseT_Half |
333 				      SUPPORTED_10baseT_Half);
334 			advertising |= (ADVERTISED_1000baseT_Half |
335 					ADVERTISED_100baseT_Half |
336 					ADVERTISED_10baseT_Half);
337 		}
338 		if (adv.lp_duplex)
339 			lp_advertising |= (ADVERTISED_1000baseT_Full |
340 					   ADVERTISED_100baseT_Full |
341 					   ADVERTISED_10baseT_Full);
342 		else
343 			lp_advertising |= (ADVERTISED_1000baseT_Half |
344 					   ADVERTISED_100baseT_Half |
345 					   ADVERTISED_10baseT_Half);
346 		cmd->base.port = PORT_OTHER;
347 
348 		ethtool_convert_legacy_u32_to_link_mode(
349 			cmd->link_modes.supported, supported);
350 		ethtool_convert_legacy_u32_to_link_mode(
351 			cmd->link_modes.advertising, advertising);
352 		ethtool_convert_legacy_u32_to_link_mode(
353 			cmd->link_modes.lp_advertising, lp_advertising);
354 
355 		return 0;
356 	}
357 
358 	if (phy == NULL) {
359 		pr_err("%s: %s: PHY is not registered\n",
360 		       __func__, dev->name);
361 		return -ENODEV;
362 	}
363 	if (!netif_running(dev)) {
364 		pr_err("%s: interface is disabled: we cannot track "
365 		"link speed / duplex setting\n", dev->name);
366 		return -EBUSY;
367 	}
368 	rc = phy_ethtool_ksettings_get(phy, cmd);
369 	return rc;
370 }
371 
372 static int
373 stmmac_ethtool_set_link_ksettings(struct net_device *dev,
374 				  const struct ethtool_link_ksettings *cmd)
375 {
376 	struct stmmac_priv *priv = netdev_priv(dev);
377 	struct phy_device *phy = dev->phydev;
378 	int rc;
379 
380 	if (priv->hw->pcs & STMMAC_PCS_RGMII ||
381 	    priv->hw->pcs & STMMAC_PCS_SGMII) {
382 		u32 mask = ADVERTISED_Autoneg | ADVERTISED_Pause;
383 
384 		/* Only support ANE */
385 		if (cmd->base.autoneg != AUTONEG_ENABLE)
386 			return -EINVAL;
387 
388 		mask &= (ADVERTISED_1000baseT_Half |
389 			ADVERTISED_1000baseT_Full |
390 			ADVERTISED_100baseT_Half |
391 			ADVERTISED_100baseT_Full |
392 			ADVERTISED_10baseT_Half |
393 			ADVERTISED_10baseT_Full);
394 
395 		spin_lock(&priv->lock);
396 
397 		if (priv->hw->mac->pcs_ctrl_ane)
398 			priv->hw->mac->pcs_ctrl_ane(priv->ioaddr, 1,
399 						    priv->hw->ps, 0);
400 
401 		spin_unlock(&priv->lock);
402 
403 		return 0;
404 	}
405 
406 	spin_lock(&priv->lock);
407 	rc = phy_ethtool_ksettings_set(phy, cmd);
408 	spin_unlock(&priv->lock);
409 
410 	return rc;
411 }
412 
413 static u32 stmmac_ethtool_getmsglevel(struct net_device *dev)
414 {
415 	struct stmmac_priv *priv = netdev_priv(dev);
416 	return priv->msg_enable;
417 }
418 
419 static void stmmac_ethtool_setmsglevel(struct net_device *dev, u32 level)
420 {
421 	struct stmmac_priv *priv = netdev_priv(dev);
422 	priv->msg_enable = level;
423 
424 }
425 
426 static int stmmac_check_if_running(struct net_device *dev)
427 {
428 	if (!netif_running(dev))
429 		return -EBUSY;
430 	return 0;
431 }
432 
433 static int stmmac_ethtool_get_regs_len(struct net_device *dev)
434 {
435 	return REG_SPACE_SIZE;
436 }
437 
438 static void stmmac_ethtool_gregs(struct net_device *dev,
439 			  struct ethtool_regs *regs, void *space)
440 {
441 	int i;
442 	u32 *reg_space = (u32 *) space;
443 
444 	struct stmmac_priv *priv = netdev_priv(dev);
445 
446 	memset(reg_space, 0x0, REG_SPACE_SIZE);
447 
448 	if (!priv->plat->has_gmac) {
449 		/* MAC registers */
450 		for (i = 0; i < 12; i++)
451 			reg_space[i] = readl(priv->ioaddr + (i * 4));
452 		/* DMA registers */
453 		for (i = 0; i < 9; i++)
454 			reg_space[i + 12] =
455 			    readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
456 		reg_space[22] = readl(priv->ioaddr + DMA_CUR_TX_BUF_ADDR);
457 		reg_space[23] = readl(priv->ioaddr + DMA_CUR_RX_BUF_ADDR);
458 	} else {
459 		/* MAC registers */
460 		for (i = 0; i < 55; i++)
461 			reg_space[i] = readl(priv->ioaddr + (i * 4));
462 		/* DMA registers */
463 		for (i = 0; i < 22; i++)
464 			reg_space[i + 55] =
465 			    readl(priv->ioaddr + (DMA_BUS_MODE + (i * 4)));
466 	}
467 }
468 
469 static void
470 stmmac_get_pauseparam(struct net_device *netdev,
471 		      struct ethtool_pauseparam *pause)
472 {
473 	struct stmmac_priv *priv = netdev_priv(netdev);
474 
475 	pause->rx_pause = 0;
476 	pause->tx_pause = 0;
477 
478 	if (priv->hw->pcs && priv->hw->mac->pcs_get_adv_lp) {
479 		struct rgmii_adv adv_lp;
480 
481 		pause->autoneg = 1;
482 		priv->hw->mac->pcs_get_adv_lp(priv->ioaddr, &adv_lp);
483 		if (!adv_lp.pause)
484 			return;
485 	} else {
486 		if (!(netdev->phydev->supported & SUPPORTED_Pause) ||
487 		    !(netdev->phydev->supported & SUPPORTED_Asym_Pause))
488 			return;
489 	}
490 
491 	pause->autoneg = netdev->phydev->autoneg;
492 
493 	if (priv->flow_ctrl & FLOW_RX)
494 		pause->rx_pause = 1;
495 	if (priv->flow_ctrl & FLOW_TX)
496 		pause->tx_pause = 1;
497 
498 }
499 
500 static int
501 stmmac_set_pauseparam(struct net_device *netdev,
502 		      struct ethtool_pauseparam *pause)
503 {
504 	struct stmmac_priv *priv = netdev_priv(netdev);
505 	struct phy_device *phy = netdev->phydev;
506 	int new_pause = FLOW_OFF;
507 
508 	if (priv->hw->pcs && priv->hw->mac->pcs_get_adv_lp) {
509 		struct rgmii_adv adv_lp;
510 
511 		pause->autoneg = 1;
512 		priv->hw->mac->pcs_get_adv_lp(priv->ioaddr, &adv_lp);
513 		if (!adv_lp.pause)
514 			return -EOPNOTSUPP;
515 	} else {
516 		if (!(phy->supported & SUPPORTED_Pause) ||
517 		    !(phy->supported & SUPPORTED_Asym_Pause))
518 			return -EOPNOTSUPP;
519 	}
520 
521 	if (pause->rx_pause)
522 		new_pause |= FLOW_RX;
523 	if (pause->tx_pause)
524 		new_pause |= FLOW_TX;
525 
526 	priv->flow_ctrl = new_pause;
527 	phy->autoneg = pause->autoneg;
528 
529 	if (phy->autoneg) {
530 		if (netif_running(netdev))
531 			return phy_start_aneg(phy);
532 	}
533 
534 	priv->hw->mac->flow_ctrl(priv->hw, phy->duplex, priv->flow_ctrl,
535 				 priv->pause);
536 	return 0;
537 }
538 
539 static void stmmac_get_ethtool_stats(struct net_device *dev,
540 				 struct ethtool_stats *dummy, u64 *data)
541 {
542 	struct stmmac_priv *priv = netdev_priv(dev);
543 	int i, j = 0;
544 
545 	/* Update the DMA HW counters for dwmac10/100 */
546 	if (priv->hw->dma->dma_diagnostic_fr)
547 		priv->hw->dma->dma_diagnostic_fr(&dev->stats,
548 						 (void *) &priv->xstats,
549 						 priv->ioaddr);
550 	else {
551 		/* If supported, for new GMAC chips expose the MMC counters */
552 		if (priv->dma_cap.rmon) {
553 			dwmac_mmc_read(priv->mmcaddr, &priv->mmc);
554 
555 			for (i = 0; i < STMMAC_MMC_STATS_LEN; i++) {
556 				char *p;
557 				p = (char *)priv + stmmac_mmc[i].stat_offset;
558 
559 				data[j++] = (stmmac_mmc[i].sizeof_stat ==
560 					     sizeof(u64)) ? (*(u64 *)p) :
561 					     (*(u32 *)p);
562 			}
563 		}
564 		if (priv->eee_enabled) {
565 			int val = phy_get_eee_err(dev->phydev);
566 			if (val)
567 				priv->xstats.phy_eee_wakeup_error_n = val;
568 		}
569 
570 		if ((priv->hw->mac->debug) &&
571 		    (priv->synopsys_id >= DWMAC_CORE_3_50))
572 			priv->hw->mac->debug(priv->ioaddr,
573 					     (void *)&priv->xstats);
574 	}
575 	for (i = 0; i < STMMAC_STATS_LEN; i++) {
576 		char *p = (char *)priv + stmmac_gstrings_stats[i].stat_offset;
577 		data[j++] = (stmmac_gstrings_stats[i].sizeof_stat ==
578 			     sizeof(u64)) ? (*(u64 *)p) : (*(u32 *)p);
579 	}
580 }
581 
582 static int stmmac_get_sset_count(struct net_device *netdev, int sset)
583 {
584 	struct stmmac_priv *priv = netdev_priv(netdev);
585 	int len;
586 
587 	switch (sset) {
588 	case ETH_SS_STATS:
589 		len = STMMAC_STATS_LEN;
590 
591 		if (priv->dma_cap.rmon)
592 			len += STMMAC_MMC_STATS_LEN;
593 
594 		return len;
595 	default:
596 		return -EOPNOTSUPP;
597 	}
598 }
599 
600 static void stmmac_get_strings(struct net_device *dev, u32 stringset, u8 *data)
601 {
602 	int i;
603 	u8 *p = data;
604 	struct stmmac_priv *priv = netdev_priv(dev);
605 
606 	switch (stringset) {
607 	case ETH_SS_STATS:
608 		if (priv->dma_cap.rmon)
609 			for (i = 0; i < STMMAC_MMC_STATS_LEN; i++) {
610 				memcpy(p, stmmac_mmc[i].stat_string,
611 				       ETH_GSTRING_LEN);
612 				p += ETH_GSTRING_LEN;
613 			}
614 		for (i = 0; i < STMMAC_STATS_LEN; i++) {
615 			memcpy(p, stmmac_gstrings_stats[i].stat_string,
616 				ETH_GSTRING_LEN);
617 			p += ETH_GSTRING_LEN;
618 		}
619 		break;
620 	default:
621 		WARN_ON(1);
622 		break;
623 	}
624 }
625 
626 /* Currently only support WOL through Magic packet. */
627 static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
628 {
629 	struct stmmac_priv *priv = netdev_priv(dev);
630 
631 	spin_lock_irq(&priv->lock);
632 	if (device_can_wakeup(priv->device)) {
633 		wol->supported = WAKE_MAGIC | WAKE_UCAST;
634 		wol->wolopts = priv->wolopts;
635 	}
636 	spin_unlock_irq(&priv->lock);
637 }
638 
639 static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
640 {
641 	struct stmmac_priv *priv = netdev_priv(dev);
642 	u32 support = WAKE_MAGIC | WAKE_UCAST;
643 
644 	/* By default almost all GMAC devices support the WoL via
645 	 * magic frame but we can disable it if the HW capability
646 	 * register shows no support for pmt_magic_frame. */
647 	if ((priv->hw_cap_support) && (!priv->dma_cap.pmt_magic_frame))
648 		wol->wolopts &= ~WAKE_MAGIC;
649 
650 	if (!device_can_wakeup(priv->device))
651 		return -EINVAL;
652 
653 	if (wol->wolopts & ~support)
654 		return -EINVAL;
655 
656 	if (wol->wolopts) {
657 		pr_info("stmmac: wakeup enable\n");
658 		device_set_wakeup_enable(priv->device, 1);
659 		enable_irq_wake(priv->wol_irq);
660 	} else {
661 		device_set_wakeup_enable(priv->device, 0);
662 		disable_irq_wake(priv->wol_irq);
663 	}
664 
665 	spin_lock_irq(&priv->lock);
666 	priv->wolopts = wol->wolopts;
667 	spin_unlock_irq(&priv->lock);
668 
669 	return 0;
670 }
671 
672 static int stmmac_ethtool_op_get_eee(struct net_device *dev,
673 				     struct ethtool_eee *edata)
674 {
675 	struct stmmac_priv *priv = netdev_priv(dev);
676 
677 	if (!priv->dma_cap.eee)
678 		return -EOPNOTSUPP;
679 
680 	edata->eee_enabled = priv->eee_enabled;
681 	edata->eee_active = priv->eee_active;
682 	edata->tx_lpi_timer = priv->tx_lpi_timer;
683 
684 	return phy_ethtool_get_eee(dev->phydev, edata);
685 }
686 
687 static int stmmac_ethtool_op_set_eee(struct net_device *dev,
688 				     struct ethtool_eee *edata)
689 {
690 	struct stmmac_priv *priv = netdev_priv(dev);
691 
692 	priv->eee_enabled = edata->eee_enabled;
693 
694 	if (!priv->eee_enabled)
695 		stmmac_disable_eee_mode(priv);
696 	else {
697 		/* We are asking for enabling the EEE but it is safe
698 		 * to verify all by invoking the eee_init function.
699 		 * In case of failure it will return an error.
700 		 */
701 		priv->eee_enabled = stmmac_eee_init(priv);
702 		if (!priv->eee_enabled)
703 			return -EOPNOTSUPP;
704 
705 		/* Do not change tx_lpi_timer in case of failure */
706 		priv->tx_lpi_timer = edata->tx_lpi_timer;
707 	}
708 
709 	return phy_ethtool_set_eee(dev->phydev, edata);
710 }
711 
712 static u32 stmmac_usec2riwt(u32 usec, struct stmmac_priv *priv)
713 {
714 	unsigned long clk = clk_get_rate(priv->stmmac_clk);
715 
716 	if (!clk)
717 		return 0;
718 
719 	return (usec * (clk / 1000000)) / 256;
720 }
721 
722 static u32 stmmac_riwt2usec(u32 riwt, struct stmmac_priv *priv)
723 {
724 	unsigned long clk = clk_get_rate(priv->stmmac_clk);
725 
726 	if (!clk)
727 		return 0;
728 
729 	return (riwt * 256) / (clk / 1000000);
730 }
731 
732 static int stmmac_get_coalesce(struct net_device *dev,
733 			       struct ethtool_coalesce *ec)
734 {
735 	struct stmmac_priv *priv = netdev_priv(dev);
736 
737 	ec->tx_coalesce_usecs = priv->tx_coal_timer;
738 	ec->tx_max_coalesced_frames = priv->tx_coal_frames;
739 
740 	if (priv->use_riwt)
741 		ec->rx_coalesce_usecs = stmmac_riwt2usec(priv->rx_riwt, priv);
742 
743 	return 0;
744 }
745 
746 static int stmmac_set_coalesce(struct net_device *dev,
747 			       struct ethtool_coalesce *ec)
748 {
749 	struct stmmac_priv *priv = netdev_priv(dev);
750 	unsigned int rx_riwt;
751 
752 	/* Check not supported parameters  */
753 	if ((ec->rx_max_coalesced_frames) || (ec->rx_coalesce_usecs_irq) ||
754 	    (ec->rx_max_coalesced_frames_irq) || (ec->tx_coalesce_usecs_irq) ||
755 	    (ec->use_adaptive_rx_coalesce) || (ec->use_adaptive_tx_coalesce) ||
756 	    (ec->pkt_rate_low) || (ec->rx_coalesce_usecs_low) ||
757 	    (ec->rx_max_coalesced_frames_low) || (ec->tx_coalesce_usecs_high) ||
758 	    (ec->tx_max_coalesced_frames_low) || (ec->pkt_rate_high) ||
759 	    (ec->tx_coalesce_usecs_low) || (ec->rx_coalesce_usecs_high) ||
760 	    (ec->rx_max_coalesced_frames_high) ||
761 	    (ec->tx_max_coalesced_frames_irq) ||
762 	    (ec->stats_block_coalesce_usecs) ||
763 	    (ec->tx_max_coalesced_frames_high) || (ec->rate_sample_interval))
764 		return -EOPNOTSUPP;
765 
766 	if (ec->rx_coalesce_usecs == 0)
767 		return -EINVAL;
768 
769 	if ((ec->tx_coalesce_usecs == 0) &&
770 	    (ec->tx_max_coalesced_frames == 0))
771 		return -EINVAL;
772 
773 	if ((ec->tx_coalesce_usecs > STMMAC_MAX_COAL_TX_TICK) ||
774 	    (ec->tx_max_coalesced_frames > STMMAC_TX_MAX_FRAMES))
775 		return -EINVAL;
776 
777 	rx_riwt = stmmac_usec2riwt(ec->rx_coalesce_usecs, priv);
778 
779 	if ((rx_riwt > MAX_DMA_RIWT) || (rx_riwt < MIN_DMA_RIWT))
780 		return -EINVAL;
781 	else if (!priv->use_riwt)
782 		return -EOPNOTSUPP;
783 
784 	/* Only copy relevant parameters, ignore all others. */
785 	priv->tx_coal_frames = ec->tx_max_coalesced_frames;
786 	priv->tx_coal_timer = ec->tx_coalesce_usecs;
787 	priv->rx_riwt = rx_riwt;
788 	priv->hw->dma->rx_watchdog(priv->ioaddr, priv->rx_riwt);
789 
790 	return 0;
791 }
792 
793 static int stmmac_get_ts_info(struct net_device *dev,
794 			      struct ethtool_ts_info *info)
795 {
796 	struct stmmac_priv *priv = netdev_priv(dev);
797 
798 	if ((priv->dma_cap.time_stamp || priv->dma_cap.atime_stamp)) {
799 
800 		info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
801 					SOF_TIMESTAMPING_TX_HARDWARE |
802 					SOF_TIMESTAMPING_RX_SOFTWARE |
803 					SOF_TIMESTAMPING_RX_HARDWARE |
804 					SOF_TIMESTAMPING_SOFTWARE |
805 					SOF_TIMESTAMPING_RAW_HARDWARE;
806 
807 		if (priv->ptp_clock)
808 			info->phc_index = ptp_clock_index(priv->ptp_clock);
809 
810 		info->tx_types = (1 << HWTSTAMP_TX_OFF) | (1 << HWTSTAMP_TX_ON);
811 
812 		info->rx_filters = ((1 << HWTSTAMP_FILTER_NONE) |
813 				    (1 << HWTSTAMP_FILTER_PTP_V1_L4_EVENT) |
814 				    (1 << HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
815 				    (1 << HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
816 				    (1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
817 				    (1 << HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
818 				    (1 << HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ) |
819 				    (1 << HWTSTAMP_FILTER_PTP_V2_EVENT) |
820 				    (1 << HWTSTAMP_FILTER_PTP_V2_SYNC) |
821 				    (1 << HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
822 				    (1 << HWTSTAMP_FILTER_ALL));
823 		return 0;
824 	} else
825 		return ethtool_op_get_ts_info(dev, info);
826 }
827 
828 static int stmmac_get_tunable(struct net_device *dev,
829 			      const struct ethtool_tunable *tuna, void *data)
830 {
831 	struct stmmac_priv *priv = netdev_priv(dev);
832 	int ret = 0;
833 
834 	switch (tuna->id) {
835 	case ETHTOOL_RX_COPYBREAK:
836 		*(u32 *)data = priv->rx_copybreak;
837 		break;
838 	default:
839 		ret = -EINVAL;
840 		break;
841 	}
842 
843 	return ret;
844 }
845 
846 static int stmmac_set_tunable(struct net_device *dev,
847 			      const struct ethtool_tunable *tuna,
848 			      const void *data)
849 {
850 	struct stmmac_priv *priv = netdev_priv(dev);
851 	int ret = 0;
852 
853 	switch (tuna->id) {
854 	case ETHTOOL_RX_COPYBREAK:
855 		priv->rx_copybreak = *(u32 *)data;
856 		break;
857 	default:
858 		ret = -EINVAL;
859 		break;
860 	}
861 
862 	return ret;
863 }
864 
865 static const struct ethtool_ops stmmac_ethtool_ops = {
866 	.begin = stmmac_check_if_running,
867 	.get_drvinfo = stmmac_ethtool_getdrvinfo,
868 	.get_msglevel = stmmac_ethtool_getmsglevel,
869 	.set_msglevel = stmmac_ethtool_setmsglevel,
870 	.get_regs = stmmac_ethtool_gregs,
871 	.get_regs_len = stmmac_ethtool_get_regs_len,
872 	.get_link = ethtool_op_get_link,
873 	.get_pauseparam = stmmac_get_pauseparam,
874 	.set_pauseparam = stmmac_set_pauseparam,
875 	.get_ethtool_stats = stmmac_get_ethtool_stats,
876 	.get_strings = stmmac_get_strings,
877 	.get_wol = stmmac_get_wol,
878 	.set_wol = stmmac_set_wol,
879 	.get_eee = stmmac_ethtool_op_get_eee,
880 	.set_eee = stmmac_ethtool_op_set_eee,
881 	.get_sset_count	= stmmac_get_sset_count,
882 	.get_ts_info = stmmac_get_ts_info,
883 	.get_coalesce = stmmac_get_coalesce,
884 	.set_coalesce = stmmac_set_coalesce,
885 	.get_tunable = stmmac_get_tunable,
886 	.set_tunable = stmmac_set_tunable,
887 	.get_link_ksettings = stmmac_ethtool_get_link_ksettings,
888 	.set_link_ksettings = stmmac_ethtool_set_link_ksettings,
889 };
890 
891 void stmmac_set_ethtool_ops(struct net_device *netdev)
892 {
893 	netdev->ethtool_ops = &stmmac_ethtool_ops;
894 }
895