1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 1999 - 2018 Intel Corporation. */
3 
4 /* ethtool support for e1000 */
5 
6 #include <linux/netdevice.h>
7 #include <linux/interrupt.h>
8 #include <linux/ethtool.h>
9 #include <linux/pci.h>
10 #include <linux/slab.h>
11 #include <linux/delay.h>
12 #include <linux/vmalloc.h>
13 #include <linux/pm_runtime.h>
14 
15 #include "e1000.h"
16 
17 enum { NETDEV_STATS, E1000_STATS };
18 
19 struct e1000_stats {
20 	char stat_string[ETH_GSTRING_LEN];
21 	int type;
22 	int sizeof_stat;
23 	int stat_offset;
24 };
25 
26 static const char e1000e_priv_flags_strings[][ETH_GSTRING_LEN] = {
27 #define E1000E_PRIV_FLAGS_S0IX_ENABLED	BIT(0)
28 	"s0ix-enabled",
29 };
30 
31 #define E1000E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(e1000e_priv_flags_strings)
32 
33 #define E1000_STAT(str, m) { \
34 		.stat_string = str, \
35 		.type = E1000_STATS, \
36 		.sizeof_stat = sizeof(((struct e1000_adapter *)0)->m), \
37 		.stat_offset = offsetof(struct e1000_adapter, m) }
38 #define E1000_NETDEV_STAT(str, m) { \
39 		.stat_string = str, \
40 		.type = NETDEV_STATS, \
41 		.sizeof_stat = sizeof(((struct rtnl_link_stats64 *)0)->m), \
42 		.stat_offset = offsetof(struct rtnl_link_stats64, m) }
43 
44 static const struct e1000_stats e1000_gstrings_stats[] = {
45 	E1000_STAT("rx_packets", stats.gprc),
46 	E1000_STAT("tx_packets", stats.gptc),
47 	E1000_STAT("rx_bytes", stats.gorc),
48 	E1000_STAT("tx_bytes", stats.gotc),
49 	E1000_STAT("rx_broadcast", stats.bprc),
50 	E1000_STAT("tx_broadcast", stats.bptc),
51 	E1000_STAT("rx_multicast", stats.mprc),
52 	E1000_STAT("tx_multicast", stats.mptc),
53 	E1000_NETDEV_STAT("rx_errors", rx_errors),
54 	E1000_NETDEV_STAT("tx_errors", tx_errors),
55 	E1000_NETDEV_STAT("tx_dropped", tx_dropped),
56 	E1000_STAT("multicast", stats.mprc),
57 	E1000_STAT("collisions", stats.colc),
58 	E1000_NETDEV_STAT("rx_length_errors", rx_length_errors),
59 	E1000_NETDEV_STAT("rx_over_errors", rx_over_errors),
60 	E1000_STAT("rx_crc_errors", stats.crcerrs),
61 	E1000_NETDEV_STAT("rx_frame_errors", rx_frame_errors),
62 	E1000_STAT("rx_no_buffer_count", stats.rnbc),
63 	E1000_STAT("rx_missed_errors", stats.mpc),
64 	E1000_STAT("tx_aborted_errors", stats.ecol),
65 	E1000_STAT("tx_carrier_errors", stats.tncrs),
66 	E1000_NETDEV_STAT("tx_fifo_errors", tx_fifo_errors),
67 	E1000_NETDEV_STAT("tx_heartbeat_errors", tx_heartbeat_errors),
68 	E1000_STAT("tx_window_errors", stats.latecol),
69 	E1000_STAT("tx_abort_late_coll", stats.latecol),
70 	E1000_STAT("tx_deferred_ok", stats.dc),
71 	E1000_STAT("tx_single_coll_ok", stats.scc),
72 	E1000_STAT("tx_multi_coll_ok", stats.mcc),
73 	E1000_STAT("tx_timeout_count", tx_timeout_count),
74 	E1000_STAT("tx_restart_queue", restart_queue),
75 	E1000_STAT("rx_long_length_errors", stats.roc),
76 	E1000_STAT("rx_short_length_errors", stats.ruc),
77 	E1000_STAT("rx_align_errors", stats.algnerrc),
78 	E1000_STAT("tx_tcp_seg_good", stats.tsctc),
79 	E1000_STAT("tx_tcp_seg_failed", stats.tsctfc),
80 	E1000_STAT("rx_flow_control_xon", stats.xonrxc),
81 	E1000_STAT("rx_flow_control_xoff", stats.xoffrxc),
82 	E1000_STAT("tx_flow_control_xon", stats.xontxc),
83 	E1000_STAT("tx_flow_control_xoff", stats.xofftxc),
84 	E1000_STAT("rx_csum_offload_good", hw_csum_good),
85 	E1000_STAT("rx_csum_offload_errors", hw_csum_err),
86 	E1000_STAT("rx_header_split", rx_hdr_split),
87 	E1000_STAT("alloc_rx_buff_failed", alloc_rx_buff_failed),
88 	E1000_STAT("tx_smbus", stats.mgptc),
89 	E1000_STAT("rx_smbus", stats.mgprc),
90 	E1000_STAT("dropped_smbus", stats.mgpdc),
91 	E1000_STAT("rx_dma_failed", rx_dma_failed),
92 	E1000_STAT("tx_dma_failed", tx_dma_failed),
93 	E1000_STAT("rx_hwtstamp_cleared", rx_hwtstamp_cleared),
94 	E1000_STAT("uncorr_ecc_errors", uncorr_errors),
95 	E1000_STAT("corr_ecc_errors", corr_errors),
96 	E1000_STAT("tx_hwtstamp_timeouts", tx_hwtstamp_timeouts),
97 	E1000_STAT("tx_hwtstamp_skipped", tx_hwtstamp_skipped),
98 };
99 
100 #define E1000_GLOBAL_STATS_LEN	ARRAY_SIZE(e1000_gstrings_stats)
101 #define E1000_STATS_LEN (E1000_GLOBAL_STATS_LEN)
102 static const char e1000_gstrings_test[][ETH_GSTRING_LEN] = {
103 	"Register test  (offline)", "Eeprom test    (offline)",
104 	"Interrupt test (offline)", "Loopback test  (offline)",
105 	"Link test   (on/offline)"
106 };
107 
108 #define E1000_TEST_LEN ARRAY_SIZE(e1000_gstrings_test)
109 
e1000_get_link_ksettings(struct net_device * netdev,struct ethtool_link_ksettings * cmd)110 static int e1000_get_link_ksettings(struct net_device *netdev,
111 				    struct ethtool_link_ksettings *cmd)
112 {
113 	struct e1000_adapter *adapter = netdev_priv(netdev);
114 	struct e1000_hw *hw = &adapter->hw;
115 	u32 speed, supported, advertising;
116 
117 	if (hw->phy.media_type == e1000_media_type_copper) {
118 		supported = (SUPPORTED_10baseT_Half |
119 			     SUPPORTED_10baseT_Full |
120 			     SUPPORTED_100baseT_Half |
121 			     SUPPORTED_100baseT_Full |
122 			     SUPPORTED_1000baseT_Full |
123 			     SUPPORTED_Autoneg |
124 			     SUPPORTED_TP);
125 		if (hw->phy.type == e1000_phy_ife)
126 			supported &= ~SUPPORTED_1000baseT_Full;
127 		advertising = ADVERTISED_TP;
128 
129 		if (hw->mac.autoneg == 1) {
130 			advertising |= ADVERTISED_Autoneg;
131 			/* the e1000 autoneg seems to match ethtool nicely */
132 			advertising |= hw->phy.autoneg_advertised;
133 		}
134 
135 		cmd->base.port = PORT_TP;
136 		cmd->base.phy_address = hw->phy.addr;
137 	} else {
138 		supported   = (SUPPORTED_1000baseT_Full |
139 			       SUPPORTED_FIBRE |
140 			       SUPPORTED_Autoneg);
141 
142 		advertising = (ADVERTISED_1000baseT_Full |
143 			       ADVERTISED_FIBRE |
144 			       ADVERTISED_Autoneg);
145 
146 		cmd->base.port = PORT_FIBRE;
147 	}
148 
149 	speed = SPEED_UNKNOWN;
150 	cmd->base.duplex = DUPLEX_UNKNOWN;
151 
152 	if (netif_running(netdev)) {
153 		if (netif_carrier_ok(netdev)) {
154 			speed = adapter->link_speed;
155 			cmd->base.duplex = adapter->link_duplex - 1;
156 		}
157 	} else if (!pm_runtime_suspended(netdev->dev.parent)) {
158 		u32 status = er32(STATUS);
159 
160 		if (status & E1000_STATUS_LU) {
161 			if (status & E1000_STATUS_SPEED_1000)
162 				speed = SPEED_1000;
163 			else if (status & E1000_STATUS_SPEED_100)
164 				speed = SPEED_100;
165 			else
166 				speed = SPEED_10;
167 
168 			if (status & E1000_STATUS_FD)
169 				cmd->base.duplex = DUPLEX_FULL;
170 			else
171 				cmd->base.duplex = DUPLEX_HALF;
172 		}
173 	}
174 
175 	cmd->base.speed = speed;
176 	cmd->base.autoneg = ((hw->phy.media_type == e1000_media_type_fiber) ||
177 			 hw->mac.autoneg) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
178 
179 	/* MDI-X => 2; MDI =>1; Invalid =>0 */
180 	if ((hw->phy.media_type == e1000_media_type_copper) &&
181 	    netif_carrier_ok(netdev))
182 		cmd->base.eth_tp_mdix = hw->phy.is_mdix ?
183 			ETH_TP_MDI_X : ETH_TP_MDI;
184 	else
185 		cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
186 
187 	if (hw->phy.mdix == AUTO_ALL_MODES)
188 		cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_AUTO;
189 	else
190 		cmd->base.eth_tp_mdix_ctrl = hw->phy.mdix;
191 
192 	if (hw->phy.media_type != e1000_media_type_copper)
193 		cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
194 
195 	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
196 						supported);
197 	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
198 						advertising);
199 
200 	return 0;
201 }
202 
e1000_set_spd_dplx(struct e1000_adapter * adapter,u32 spd,u8 dplx)203 static int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx)
204 {
205 	struct e1000_mac_info *mac = &adapter->hw.mac;
206 
207 	mac->autoneg = 0;
208 
209 	/* Make sure dplx is at most 1 bit and lsb of speed is not set
210 	 * for the switch() below to work
211 	 */
212 	if ((spd & 1) || (dplx & ~1))
213 		goto err_inval;
214 
215 	/* Fiber NICs only allow 1000 gbps Full duplex */
216 	if ((adapter->hw.phy.media_type == e1000_media_type_fiber) &&
217 	    (spd != SPEED_1000) && (dplx != DUPLEX_FULL)) {
218 		goto err_inval;
219 	}
220 
221 	switch (spd + dplx) {
222 	case SPEED_10 + DUPLEX_HALF:
223 		mac->forced_speed_duplex = ADVERTISE_10_HALF;
224 		break;
225 	case SPEED_10 + DUPLEX_FULL:
226 		mac->forced_speed_duplex = ADVERTISE_10_FULL;
227 		break;
228 	case SPEED_100 + DUPLEX_HALF:
229 		mac->forced_speed_duplex = ADVERTISE_100_HALF;
230 		break;
231 	case SPEED_100 + DUPLEX_FULL:
232 		mac->forced_speed_duplex = ADVERTISE_100_FULL;
233 		break;
234 	case SPEED_1000 + DUPLEX_FULL:
235 		if (adapter->hw.phy.media_type == e1000_media_type_copper) {
236 			mac->autoneg = 1;
237 			adapter->hw.phy.autoneg_advertised =
238 				ADVERTISE_1000_FULL;
239 		} else {
240 			mac->forced_speed_duplex = ADVERTISE_1000_FULL;
241 		}
242 		break;
243 	case SPEED_1000 + DUPLEX_HALF:	/* not supported */
244 	default:
245 		goto err_inval;
246 	}
247 
248 	/* clear MDI, MDI(-X) override is only allowed when autoneg enabled */
249 	adapter->hw.phy.mdix = AUTO_ALL_MODES;
250 
251 	return 0;
252 
253 err_inval:
254 	e_err("Unsupported Speed/Duplex configuration\n");
255 	return -EINVAL;
256 }
257 
e1000_set_link_ksettings(struct net_device * netdev,const struct ethtool_link_ksettings * cmd)258 static int e1000_set_link_ksettings(struct net_device *netdev,
259 				    const struct ethtool_link_ksettings *cmd)
260 {
261 	struct e1000_adapter *adapter = netdev_priv(netdev);
262 	struct e1000_hw *hw = &adapter->hw;
263 	int ret_val = 0;
264 	u32 advertising;
265 
266 	ethtool_convert_link_mode_to_legacy_u32(&advertising,
267 						cmd->link_modes.advertising);
268 
269 	pm_runtime_get_sync(netdev->dev.parent);
270 
271 	/* When SoL/IDER sessions are active, autoneg/speed/duplex
272 	 * cannot be changed
273 	 */
274 	if (hw->phy.ops.check_reset_block &&
275 	    hw->phy.ops.check_reset_block(hw)) {
276 		e_err("Cannot change link characteristics when SoL/IDER is active.\n");
277 		ret_val = -EINVAL;
278 		goto out;
279 	}
280 
281 	/* MDI setting is only allowed when autoneg enabled because
282 	 * some hardware doesn't allow MDI setting when speed or
283 	 * duplex is forced.
284 	 */
285 	if (cmd->base.eth_tp_mdix_ctrl) {
286 		if (hw->phy.media_type != e1000_media_type_copper) {
287 			ret_val = -EOPNOTSUPP;
288 			goto out;
289 		}
290 
291 		if ((cmd->base.eth_tp_mdix_ctrl != ETH_TP_MDI_AUTO) &&
292 		    (cmd->base.autoneg != AUTONEG_ENABLE)) {
293 			e_err("forcing MDI/MDI-X state is not supported when link speed and/or duplex are forced\n");
294 			ret_val = -EINVAL;
295 			goto out;
296 		}
297 	}
298 
299 	while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
300 		usleep_range(1000, 2000);
301 
302 	if (cmd->base.autoneg == AUTONEG_ENABLE) {
303 		hw->mac.autoneg = 1;
304 		if (hw->phy.media_type == e1000_media_type_fiber)
305 			hw->phy.autoneg_advertised = ADVERTISED_1000baseT_Full |
306 			    ADVERTISED_FIBRE | ADVERTISED_Autoneg;
307 		else
308 			hw->phy.autoneg_advertised = advertising |
309 			    ADVERTISED_TP | ADVERTISED_Autoneg;
310 		advertising = hw->phy.autoneg_advertised;
311 		if (adapter->fc_autoneg)
312 			hw->fc.requested_mode = e1000_fc_default;
313 	} else {
314 		u32 speed = cmd->base.speed;
315 		/* calling this overrides forced MDI setting */
316 		if (e1000_set_spd_dplx(adapter, speed, cmd->base.duplex)) {
317 			ret_val = -EINVAL;
318 			goto out;
319 		}
320 	}
321 
322 	/* MDI-X => 2; MDI => 1; Auto => 3 */
323 	if (cmd->base.eth_tp_mdix_ctrl) {
324 		/* fix up the value for auto (3 => 0) as zero is mapped
325 		 * internally to auto
326 		 */
327 		if (cmd->base.eth_tp_mdix_ctrl == ETH_TP_MDI_AUTO)
328 			hw->phy.mdix = AUTO_ALL_MODES;
329 		else
330 			hw->phy.mdix = cmd->base.eth_tp_mdix_ctrl;
331 	}
332 
333 	/* reset the link */
334 	if (netif_running(adapter->netdev)) {
335 		e1000e_down(adapter, true);
336 		e1000e_up(adapter);
337 	} else {
338 		e1000e_reset(adapter);
339 	}
340 
341 out:
342 	pm_runtime_put_sync(netdev->dev.parent);
343 	clear_bit(__E1000_RESETTING, &adapter->state);
344 	return ret_val;
345 }
346 
e1000_get_pauseparam(struct net_device * netdev,struct ethtool_pauseparam * pause)347 static void e1000_get_pauseparam(struct net_device *netdev,
348 				 struct ethtool_pauseparam *pause)
349 {
350 	struct e1000_adapter *adapter = netdev_priv(netdev);
351 	struct e1000_hw *hw = &adapter->hw;
352 
353 	pause->autoneg =
354 	    (adapter->fc_autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE);
355 
356 	if (hw->fc.current_mode == e1000_fc_rx_pause) {
357 		pause->rx_pause = 1;
358 	} else if (hw->fc.current_mode == e1000_fc_tx_pause) {
359 		pause->tx_pause = 1;
360 	} else if (hw->fc.current_mode == e1000_fc_full) {
361 		pause->rx_pause = 1;
362 		pause->tx_pause = 1;
363 	}
364 }
365 
e1000_set_pauseparam(struct net_device * netdev,struct ethtool_pauseparam * pause)366 static int e1000_set_pauseparam(struct net_device *netdev,
367 				struct ethtool_pauseparam *pause)
368 {
369 	struct e1000_adapter *adapter = netdev_priv(netdev);
370 	struct e1000_hw *hw = &adapter->hw;
371 	int retval = 0;
372 
373 	adapter->fc_autoneg = pause->autoneg;
374 
375 	while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
376 		usleep_range(1000, 2000);
377 
378 	pm_runtime_get_sync(netdev->dev.parent);
379 
380 	if (adapter->fc_autoneg == AUTONEG_ENABLE) {
381 		hw->fc.requested_mode = e1000_fc_default;
382 		if (netif_running(adapter->netdev)) {
383 			e1000e_down(adapter, true);
384 			e1000e_up(adapter);
385 		} else {
386 			e1000e_reset(adapter);
387 		}
388 	} else {
389 		if (pause->rx_pause && pause->tx_pause)
390 			hw->fc.requested_mode = e1000_fc_full;
391 		else if (pause->rx_pause && !pause->tx_pause)
392 			hw->fc.requested_mode = e1000_fc_rx_pause;
393 		else if (!pause->rx_pause && pause->tx_pause)
394 			hw->fc.requested_mode = e1000_fc_tx_pause;
395 		else if (!pause->rx_pause && !pause->tx_pause)
396 			hw->fc.requested_mode = e1000_fc_none;
397 
398 		hw->fc.current_mode = hw->fc.requested_mode;
399 
400 		if (hw->phy.media_type == e1000_media_type_fiber) {
401 			retval = hw->mac.ops.setup_link(hw);
402 			/* implicit goto out */
403 		} else {
404 			retval = e1000e_force_mac_fc(hw);
405 			if (retval)
406 				goto out;
407 			e1000e_set_fc_watermarks(hw);
408 		}
409 	}
410 
411 out:
412 	pm_runtime_put_sync(netdev->dev.parent);
413 	clear_bit(__E1000_RESETTING, &adapter->state);
414 	return retval;
415 }
416 
e1000_get_msglevel(struct net_device * netdev)417 static u32 e1000_get_msglevel(struct net_device *netdev)
418 {
419 	struct e1000_adapter *adapter = netdev_priv(netdev);
420 	return adapter->msg_enable;
421 }
422 
e1000_set_msglevel(struct net_device * netdev,u32 data)423 static void e1000_set_msglevel(struct net_device *netdev, u32 data)
424 {
425 	struct e1000_adapter *adapter = netdev_priv(netdev);
426 	adapter->msg_enable = data;
427 }
428 
e1000_get_regs_len(struct net_device __always_unused * netdev)429 static int e1000_get_regs_len(struct net_device __always_unused *netdev)
430 {
431 #define E1000_REGS_LEN 32	/* overestimate */
432 	return E1000_REGS_LEN * sizeof(u32);
433 }
434 
e1000_get_regs(struct net_device * netdev,struct ethtool_regs * regs,void * p)435 static void e1000_get_regs(struct net_device *netdev,
436 			   struct ethtool_regs *regs, void *p)
437 {
438 	struct e1000_adapter *adapter = netdev_priv(netdev);
439 	struct e1000_hw *hw = &adapter->hw;
440 	u32 *regs_buff = p;
441 	u16 phy_data;
442 
443 	pm_runtime_get_sync(netdev->dev.parent);
444 
445 	memset(p, 0, E1000_REGS_LEN * sizeof(u32));
446 
447 	regs->version = (1u << 24) |
448 			(adapter->pdev->revision << 16) |
449 			adapter->pdev->device;
450 
451 	regs_buff[0] = er32(CTRL);
452 	regs_buff[1] = er32(STATUS);
453 
454 	regs_buff[2] = er32(RCTL);
455 	regs_buff[3] = er32(RDLEN(0));
456 	regs_buff[4] = er32(RDH(0));
457 	regs_buff[5] = er32(RDT(0));
458 	regs_buff[6] = er32(RDTR);
459 
460 	regs_buff[7] = er32(TCTL);
461 	regs_buff[8] = er32(TDLEN(0));
462 	regs_buff[9] = er32(TDH(0));
463 	regs_buff[10] = er32(TDT(0));
464 	regs_buff[11] = er32(TIDV);
465 
466 	regs_buff[12] = adapter->hw.phy.type;	/* PHY type (IGP=1, M88=0) */
467 
468 	/* ethtool doesn't use anything past this point, so all this
469 	 * code is likely legacy junk for apps that may or may not exist
470 	 */
471 	if (hw->phy.type == e1000_phy_m88) {
472 		e1e_rphy(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
473 		regs_buff[13] = (u32)phy_data; /* cable length */
474 		regs_buff[14] = 0;  /* Dummy (to align w/ IGP phy reg dump) */
475 		regs_buff[15] = 0;  /* Dummy (to align w/ IGP phy reg dump) */
476 		regs_buff[16] = 0;  /* Dummy (to align w/ IGP phy reg dump) */
477 		e1e_rphy(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
478 		regs_buff[17] = (u32)phy_data; /* extended 10bt distance */
479 		regs_buff[18] = regs_buff[13]; /* cable polarity */
480 		regs_buff[19] = 0;  /* Dummy (to align w/ IGP phy reg dump) */
481 		regs_buff[20] = regs_buff[17]; /* polarity correction */
482 		/* phy receive errors */
483 		regs_buff[22] = adapter->phy_stats.receive_errors;
484 		regs_buff[23] = regs_buff[13]; /* mdix mode */
485 	}
486 	regs_buff[21] = 0;	/* was idle_errors */
487 	e1e_rphy(hw, MII_STAT1000, &phy_data);
488 	regs_buff[24] = (u32)phy_data;	/* phy local receiver status */
489 	regs_buff[25] = regs_buff[24];	/* phy remote receiver status */
490 
491 	pm_runtime_put_sync(netdev->dev.parent);
492 }
493 
e1000_get_eeprom_len(struct net_device * netdev)494 static int e1000_get_eeprom_len(struct net_device *netdev)
495 {
496 	struct e1000_adapter *adapter = netdev_priv(netdev);
497 	return adapter->hw.nvm.word_size * 2;
498 }
499 
e1000_get_eeprom(struct net_device * netdev,struct ethtool_eeprom * eeprom,u8 * bytes)500 static int e1000_get_eeprom(struct net_device *netdev,
501 			    struct ethtool_eeprom *eeprom, u8 *bytes)
502 {
503 	struct e1000_adapter *adapter = netdev_priv(netdev);
504 	struct e1000_hw *hw = &adapter->hw;
505 	u16 *eeprom_buff;
506 	int first_word;
507 	int last_word;
508 	int ret_val = 0;
509 	u16 i;
510 
511 	if (eeprom->len == 0)
512 		return -EINVAL;
513 
514 	eeprom->magic = adapter->pdev->vendor | (adapter->pdev->device << 16);
515 
516 	first_word = eeprom->offset >> 1;
517 	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
518 
519 	eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16),
520 				    GFP_KERNEL);
521 	if (!eeprom_buff)
522 		return -ENOMEM;
523 
524 	pm_runtime_get_sync(netdev->dev.parent);
525 
526 	if (hw->nvm.type == e1000_nvm_eeprom_spi) {
527 		ret_val = e1000_read_nvm(hw, first_word,
528 					 last_word - first_word + 1,
529 					 eeprom_buff);
530 	} else {
531 		for (i = 0; i < last_word - first_word + 1; i++) {
532 			ret_val = e1000_read_nvm(hw, first_word + i, 1,
533 						 &eeprom_buff[i]);
534 			if (ret_val)
535 				break;
536 		}
537 	}
538 
539 	pm_runtime_put_sync(netdev->dev.parent);
540 
541 	if (ret_val) {
542 		/* a read error occurred, throw away the result */
543 		memset(eeprom_buff, 0xff, sizeof(u16) *
544 		       (last_word - first_word + 1));
545 	} else {
546 		/* Device's eeprom is always little-endian, word addressable */
547 		for (i = 0; i < last_word - first_word + 1; i++)
548 			le16_to_cpus(&eeprom_buff[i]);
549 	}
550 
551 	memcpy(bytes, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
552 	kfree(eeprom_buff);
553 
554 	return ret_val;
555 }
556 
e1000_set_eeprom(struct net_device * netdev,struct ethtool_eeprom * eeprom,u8 * bytes)557 static int e1000_set_eeprom(struct net_device *netdev,
558 			    struct ethtool_eeprom *eeprom, u8 *bytes)
559 {
560 	struct e1000_adapter *adapter = netdev_priv(netdev);
561 	struct e1000_hw *hw = &adapter->hw;
562 	u16 *eeprom_buff;
563 	void *ptr;
564 	int max_len;
565 	int first_word;
566 	int last_word;
567 	int ret_val = 0;
568 	u16 i;
569 
570 	if (eeprom->len == 0)
571 		return -EOPNOTSUPP;
572 
573 	if (eeprom->magic !=
574 	    (adapter->pdev->vendor | (adapter->pdev->device << 16)))
575 		return -EFAULT;
576 
577 	if (adapter->flags & FLAG_READ_ONLY_NVM)
578 		return -EINVAL;
579 
580 	max_len = hw->nvm.word_size * 2;
581 
582 	first_word = eeprom->offset >> 1;
583 	last_word = (eeprom->offset + eeprom->len - 1) >> 1;
584 	eeprom_buff = kmalloc(max_len, GFP_KERNEL);
585 	if (!eeprom_buff)
586 		return -ENOMEM;
587 
588 	ptr = (void *)eeprom_buff;
589 
590 	pm_runtime_get_sync(netdev->dev.parent);
591 
592 	if (eeprom->offset & 1) {
593 		/* need read/modify/write of first changed EEPROM word */
594 		/* only the second byte of the word is being modified */
595 		ret_val = e1000_read_nvm(hw, first_word, 1, &eeprom_buff[0]);
596 		ptr++;
597 	}
598 	if (((eeprom->offset + eeprom->len) & 1) && (!ret_val))
599 		/* need read/modify/write of last changed EEPROM word */
600 		/* only the first byte of the word is being modified */
601 		ret_val = e1000_read_nvm(hw, last_word, 1,
602 					 &eeprom_buff[last_word - first_word]);
603 
604 	if (ret_val)
605 		goto out;
606 
607 	/* Device's eeprom is always little-endian, word addressable */
608 	for (i = 0; i < last_word - first_word + 1; i++)
609 		le16_to_cpus(&eeprom_buff[i]);
610 
611 	memcpy(ptr, bytes, eeprom->len);
612 
613 	for (i = 0; i < last_word - first_word + 1; i++)
614 		cpu_to_le16s(&eeprom_buff[i]);
615 
616 	ret_val = e1000_write_nvm(hw, first_word,
617 				  last_word - first_word + 1, eeprom_buff);
618 
619 	if (ret_val)
620 		goto out;
621 
622 	/* Update the checksum over the first part of the EEPROM if needed
623 	 * and flush shadow RAM for applicable controllers
624 	 */
625 	if ((first_word <= NVM_CHECKSUM_REG) ||
626 	    (hw->mac.type == e1000_82583) ||
627 	    (hw->mac.type == e1000_82574) ||
628 	    (hw->mac.type == e1000_82573))
629 		ret_val = e1000e_update_nvm_checksum(hw);
630 
631 out:
632 	pm_runtime_put_sync(netdev->dev.parent);
633 	kfree(eeprom_buff);
634 	return ret_val;
635 }
636 
e1000_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * drvinfo)637 static void e1000_get_drvinfo(struct net_device *netdev,
638 			      struct ethtool_drvinfo *drvinfo)
639 {
640 	struct e1000_adapter *adapter = netdev_priv(netdev);
641 
642 	strscpy(drvinfo->driver, e1000e_driver_name, sizeof(drvinfo->driver));
643 
644 	/* EEPROM image version # is reported as firmware version # for
645 	 * PCI-E controllers
646 	 */
647 	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
648 		 "%d.%d-%d",
649 		 (adapter->eeprom_vers & 0xF000) >> 12,
650 		 (adapter->eeprom_vers & 0x0FF0) >> 4,
651 		 (adapter->eeprom_vers & 0x000F));
652 
653 	strscpy(drvinfo->bus_info, pci_name(adapter->pdev),
654 		sizeof(drvinfo->bus_info));
655 }
656 
e1000_get_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring,struct kernel_ethtool_ringparam * kernel_ring,struct netlink_ext_ack * extack)657 static void e1000_get_ringparam(struct net_device *netdev,
658 				struct ethtool_ringparam *ring,
659 				struct kernel_ethtool_ringparam *kernel_ring,
660 				struct netlink_ext_ack *extack)
661 {
662 	struct e1000_adapter *adapter = netdev_priv(netdev);
663 
664 	ring->rx_max_pending = E1000_MAX_RXD;
665 	ring->tx_max_pending = E1000_MAX_TXD;
666 	ring->rx_pending = adapter->rx_ring_count;
667 	ring->tx_pending = adapter->tx_ring_count;
668 }
669 
e1000_set_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring,struct kernel_ethtool_ringparam * kernel_ring,struct netlink_ext_ack * extack)670 static int e1000_set_ringparam(struct net_device *netdev,
671 			       struct ethtool_ringparam *ring,
672 			       struct kernel_ethtool_ringparam *kernel_ring,
673 			       struct netlink_ext_ack *extack)
674 {
675 	struct e1000_adapter *adapter = netdev_priv(netdev);
676 	struct e1000_ring *temp_tx = NULL, *temp_rx = NULL;
677 	int err = 0, size = sizeof(struct e1000_ring);
678 	bool set_tx = false, set_rx = false;
679 	u16 new_rx_count, new_tx_count;
680 
681 	if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
682 		return -EINVAL;
683 
684 	new_rx_count = clamp_t(u32, ring->rx_pending, E1000_MIN_RXD,
685 			       E1000_MAX_RXD);
686 	new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);
687 
688 	new_tx_count = clamp_t(u32, ring->tx_pending, E1000_MIN_TXD,
689 			       E1000_MAX_TXD);
690 	new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);
691 
692 	if ((new_tx_count == adapter->tx_ring_count) &&
693 	    (new_rx_count == adapter->rx_ring_count))
694 		/* nothing to do */
695 		return 0;
696 
697 	while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
698 		usleep_range(1000, 2000);
699 
700 	if (!netif_running(adapter->netdev)) {
701 		/* Set counts now and allocate resources during open() */
702 		adapter->tx_ring->count = new_tx_count;
703 		adapter->rx_ring->count = new_rx_count;
704 		adapter->tx_ring_count = new_tx_count;
705 		adapter->rx_ring_count = new_rx_count;
706 		goto clear_reset;
707 	}
708 
709 	set_tx = (new_tx_count != adapter->tx_ring_count);
710 	set_rx = (new_rx_count != adapter->rx_ring_count);
711 
712 	/* Allocate temporary storage for ring updates */
713 	if (set_tx) {
714 		temp_tx = vmalloc(size);
715 		if (!temp_tx) {
716 			err = -ENOMEM;
717 			goto free_temp;
718 		}
719 	}
720 	if (set_rx) {
721 		temp_rx = vmalloc(size);
722 		if (!temp_rx) {
723 			err = -ENOMEM;
724 			goto free_temp;
725 		}
726 	}
727 
728 	pm_runtime_get_sync(netdev->dev.parent);
729 
730 	e1000e_down(adapter, true);
731 
732 	/* We can't just free everything and then setup again, because the
733 	 * ISRs in MSI-X mode get passed pointers to the Tx and Rx ring
734 	 * structs.  First, attempt to allocate new resources...
735 	 */
736 	if (set_tx) {
737 		memcpy(temp_tx, adapter->tx_ring, size);
738 		temp_tx->count = new_tx_count;
739 		err = e1000e_setup_tx_resources(temp_tx);
740 		if (err)
741 			goto err_setup;
742 	}
743 	if (set_rx) {
744 		memcpy(temp_rx, adapter->rx_ring, size);
745 		temp_rx->count = new_rx_count;
746 		err = e1000e_setup_rx_resources(temp_rx);
747 		if (err)
748 			goto err_setup_rx;
749 	}
750 
751 	/* ...then free the old resources and copy back any new ring data */
752 	if (set_tx) {
753 		e1000e_free_tx_resources(adapter->tx_ring);
754 		memcpy(adapter->tx_ring, temp_tx, size);
755 		adapter->tx_ring_count = new_tx_count;
756 	}
757 	if (set_rx) {
758 		e1000e_free_rx_resources(adapter->rx_ring);
759 		memcpy(adapter->rx_ring, temp_rx, size);
760 		adapter->rx_ring_count = new_rx_count;
761 	}
762 
763 err_setup_rx:
764 	if (err && set_tx)
765 		e1000e_free_tx_resources(temp_tx);
766 err_setup:
767 	e1000e_up(adapter);
768 	pm_runtime_put_sync(netdev->dev.parent);
769 free_temp:
770 	vfree(temp_tx);
771 	vfree(temp_rx);
772 clear_reset:
773 	clear_bit(__E1000_RESETTING, &adapter->state);
774 	return err;
775 }
776 
reg_pattern_test(struct e1000_adapter * adapter,u64 * data,int reg,int offset,u32 mask,u32 write)777 static bool reg_pattern_test(struct e1000_adapter *adapter, u64 *data,
778 			     int reg, int offset, u32 mask, u32 write)
779 {
780 	u32 pat, val;
781 	static const u32 test[] = {
782 		0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF
783 	};
784 	for (pat = 0; pat < ARRAY_SIZE(test); pat++) {
785 		E1000_WRITE_REG_ARRAY(&adapter->hw, reg, offset,
786 				      (test[pat] & write));
787 		val = E1000_READ_REG_ARRAY(&adapter->hw, reg, offset);
788 		if (val != (test[pat] & write & mask)) {
789 			e_err("pattern test failed (reg 0x%05X): got 0x%08X expected 0x%08X\n",
790 			      reg + (offset << 2), val,
791 			      (test[pat] & write & mask));
792 			*data = reg;
793 			return true;
794 		}
795 	}
796 	return false;
797 }
798 
reg_set_and_check(struct e1000_adapter * adapter,u64 * data,int reg,u32 mask,u32 write)799 static bool reg_set_and_check(struct e1000_adapter *adapter, u64 *data,
800 			      int reg, u32 mask, u32 write)
801 {
802 	u32 val;
803 
804 	__ew32(&adapter->hw, reg, write & mask);
805 	val = __er32(&adapter->hw, reg);
806 	if ((write & mask) != (val & mask)) {
807 		e_err("set/check test failed (reg 0x%05X): got 0x%08X expected 0x%08X\n",
808 		      reg, (val & mask), (write & mask));
809 		*data = reg;
810 		return true;
811 	}
812 	return false;
813 }
814 
815 #define REG_PATTERN_TEST_ARRAY(reg, offset, mask, write)                       \
816 	do {                                                                   \
817 		if (reg_pattern_test(adapter, data, reg, offset, mask, write)) \
818 			return 1;                                              \
819 	} while (0)
820 #define REG_PATTERN_TEST(reg, mask, write)                                     \
821 	REG_PATTERN_TEST_ARRAY(reg, 0, mask, write)
822 
823 #define REG_SET_AND_CHECK(reg, mask, write)                                    \
824 	do {                                                                   \
825 		if (reg_set_and_check(adapter, data, reg, mask, write))        \
826 			return 1;                                              \
827 	} while (0)
828 
e1000_reg_test(struct e1000_adapter * adapter,u64 * data)829 static int e1000_reg_test(struct e1000_adapter *adapter, u64 *data)
830 {
831 	struct e1000_hw *hw = &adapter->hw;
832 	struct e1000_mac_info *mac = &adapter->hw.mac;
833 	u32 value;
834 	u32 before;
835 	u32 after;
836 	u32 i;
837 	u32 toggle;
838 	u32 mask;
839 	u32 wlock_mac = 0;
840 
841 	/* The status register is Read Only, so a write should fail.
842 	 * Some bits that get toggled are ignored.  There are several bits
843 	 * on newer hardware that are r/w.
844 	 */
845 	switch (mac->type) {
846 	case e1000_82571:
847 	case e1000_82572:
848 	case e1000_80003es2lan:
849 		toggle = 0x7FFFF3FF;
850 		break;
851 	default:
852 		toggle = 0x7FFFF033;
853 		break;
854 	}
855 
856 	before = er32(STATUS);
857 	value = (er32(STATUS) & toggle);
858 	ew32(STATUS, toggle);
859 	after = er32(STATUS) & toggle;
860 	if (value != after) {
861 		e_err("failed STATUS register test got: 0x%08X expected: 0x%08X\n",
862 		      after, value);
863 		*data = 1;
864 		return 1;
865 	}
866 	/* restore previous status */
867 	ew32(STATUS, before);
868 
869 	if (!(adapter->flags & FLAG_IS_ICH)) {
870 		REG_PATTERN_TEST(E1000_FCAL, 0xFFFFFFFF, 0xFFFFFFFF);
871 		REG_PATTERN_TEST(E1000_FCAH, 0x0000FFFF, 0xFFFFFFFF);
872 		REG_PATTERN_TEST(E1000_FCT, 0x0000FFFF, 0xFFFFFFFF);
873 		REG_PATTERN_TEST(E1000_VET, 0x0000FFFF, 0xFFFFFFFF);
874 	}
875 
876 	REG_PATTERN_TEST(E1000_RDTR, 0x0000FFFF, 0xFFFFFFFF);
877 	REG_PATTERN_TEST(E1000_RDBAH(0), 0xFFFFFFFF, 0xFFFFFFFF);
878 	REG_PATTERN_TEST(E1000_RDLEN(0), 0x000FFF80, 0x000FFFFF);
879 	REG_PATTERN_TEST(E1000_RDH(0), 0x0000FFFF, 0x0000FFFF);
880 	REG_PATTERN_TEST(E1000_RDT(0), 0x0000FFFF, 0x0000FFFF);
881 	REG_PATTERN_TEST(E1000_FCRTH, 0x0000FFF8, 0x0000FFF8);
882 	REG_PATTERN_TEST(E1000_FCTTV, 0x0000FFFF, 0x0000FFFF);
883 	REG_PATTERN_TEST(E1000_TIPG, 0x3FFFFFFF, 0x3FFFFFFF);
884 	REG_PATTERN_TEST(E1000_TDBAH(0), 0xFFFFFFFF, 0xFFFFFFFF);
885 	REG_PATTERN_TEST(E1000_TDLEN(0), 0x000FFF80, 0x000FFFFF);
886 
887 	REG_SET_AND_CHECK(E1000_RCTL, 0xFFFFFFFF, 0x00000000);
888 
889 	before = ((adapter->flags & FLAG_IS_ICH) ? 0x06C3B33E : 0x06DFB3FE);
890 	REG_SET_AND_CHECK(E1000_RCTL, before, 0x003FFFFB);
891 	REG_SET_AND_CHECK(E1000_TCTL, 0xFFFFFFFF, 0x00000000);
892 
893 	REG_SET_AND_CHECK(E1000_RCTL, before, 0xFFFFFFFF);
894 	REG_PATTERN_TEST(E1000_RDBAL(0), 0xFFFFFFF0, 0xFFFFFFFF);
895 	if (!(adapter->flags & FLAG_IS_ICH))
896 		REG_PATTERN_TEST(E1000_TXCW, 0xC000FFFF, 0x0000FFFF);
897 	REG_PATTERN_TEST(E1000_TDBAL(0), 0xFFFFFFF0, 0xFFFFFFFF);
898 	REG_PATTERN_TEST(E1000_TIDV, 0x0000FFFF, 0x0000FFFF);
899 	mask = 0x8003FFFF;
900 	switch (mac->type) {
901 	case e1000_ich10lan:
902 	case e1000_pchlan:
903 	case e1000_pch2lan:
904 	case e1000_pch_lpt:
905 	case e1000_pch_spt:
906 	case e1000_pch_cnp:
907 	case e1000_pch_tgp:
908 	case e1000_pch_adp:
909 	case e1000_pch_mtp:
910 	case e1000_pch_lnp:
911 		mask |= BIT(18);
912 		break;
913 	default:
914 		break;
915 	}
916 
917 	if (mac->type >= e1000_pch_lpt)
918 		wlock_mac = (er32(FWSM) & E1000_FWSM_WLOCK_MAC_MASK) >>
919 		    E1000_FWSM_WLOCK_MAC_SHIFT;
920 
921 	for (i = 0; i < mac->rar_entry_count; i++) {
922 		if (mac->type >= e1000_pch_lpt) {
923 			/* Cannot test write-protected SHRAL[n] registers */
924 			if ((wlock_mac == 1) || (wlock_mac && (i > wlock_mac)))
925 				continue;
926 
927 			/* SHRAH[9] different than the others */
928 			if (i == 10)
929 				mask |= BIT(30);
930 			else
931 				mask &= ~BIT(30);
932 		}
933 		if (mac->type == e1000_pch2lan) {
934 			/* SHRAH[0,1,2] different than previous */
935 			if (i == 1)
936 				mask &= 0xFFF4FFFF;
937 			/* SHRAH[3] different than SHRAH[0,1,2] */
938 			if (i == 4)
939 				mask |= BIT(30);
940 			/* RAR[1-6] owned by management engine - skipping */
941 			if (i > 0)
942 				i += 6;
943 		}
944 
945 		REG_PATTERN_TEST_ARRAY(E1000_RA, ((i << 1) + 1), mask,
946 				       0xFFFFFFFF);
947 		/* reset index to actual value */
948 		if ((mac->type == e1000_pch2lan) && (i > 6))
949 			i -= 6;
950 	}
951 
952 	for (i = 0; i < mac->mta_reg_count; i++)
953 		REG_PATTERN_TEST_ARRAY(E1000_MTA, i, 0xFFFFFFFF, 0xFFFFFFFF);
954 
955 	*data = 0;
956 
957 	return 0;
958 }
959 
e1000_eeprom_test(struct e1000_adapter * adapter,u64 * data)960 static int e1000_eeprom_test(struct e1000_adapter *adapter, u64 *data)
961 {
962 	u16 temp;
963 	u16 checksum = 0;
964 	u16 i;
965 
966 	*data = 0;
967 	/* Read and add up the contents of the EEPROM */
968 	for (i = 0; i < (NVM_CHECKSUM_REG + 1); i++) {
969 		if ((e1000_read_nvm(&adapter->hw, i, 1, &temp)) < 0) {
970 			*data = 1;
971 			return *data;
972 		}
973 		checksum += temp;
974 	}
975 
976 	/* If Checksum is not Correct return error else test passed */
977 	if ((checksum != (u16)NVM_SUM) && !(*data))
978 		*data = 2;
979 
980 	return *data;
981 }
982 
e1000_test_intr(int __always_unused irq,void * data)983 static irqreturn_t e1000_test_intr(int __always_unused irq, void *data)
984 {
985 	struct net_device *netdev = (struct net_device *)data;
986 	struct e1000_adapter *adapter = netdev_priv(netdev);
987 	struct e1000_hw *hw = &adapter->hw;
988 
989 	adapter->test_icr |= er32(ICR);
990 
991 	return IRQ_HANDLED;
992 }
993 
e1000_intr_test(struct e1000_adapter * adapter,u64 * data)994 static int e1000_intr_test(struct e1000_adapter *adapter, u64 *data)
995 {
996 	struct net_device *netdev = adapter->netdev;
997 	struct e1000_hw *hw = &adapter->hw;
998 	u32 mask;
999 	u32 shared_int = 1;
1000 	u32 irq = adapter->pdev->irq;
1001 	int i;
1002 	int ret_val = 0;
1003 	int int_mode = E1000E_INT_MODE_LEGACY;
1004 
1005 	*data = 0;
1006 
1007 	/* NOTE: we don't test MSI/MSI-X interrupts here, yet */
1008 	if (adapter->int_mode == E1000E_INT_MODE_MSIX) {
1009 		int_mode = adapter->int_mode;
1010 		e1000e_reset_interrupt_capability(adapter);
1011 		adapter->int_mode = E1000E_INT_MODE_LEGACY;
1012 		e1000e_set_interrupt_capability(adapter);
1013 	}
1014 	/* Hook up test interrupt handler just for this test */
1015 	if (!request_irq(irq, e1000_test_intr, IRQF_PROBE_SHARED, netdev->name,
1016 			 netdev)) {
1017 		shared_int = 0;
1018 	} else if (request_irq(irq, e1000_test_intr, IRQF_SHARED, netdev->name,
1019 			       netdev)) {
1020 		*data = 1;
1021 		ret_val = -1;
1022 		goto out;
1023 	}
1024 	e_info("testing %s interrupt\n", (shared_int ? "shared" : "unshared"));
1025 
1026 	/* Disable all the interrupts */
1027 	ew32(IMC, 0xFFFFFFFF);
1028 	e1e_flush();
1029 	usleep_range(10000, 11000);
1030 
1031 	/* Test each interrupt */
1032 	for (i = 0; i < 10; i++) {
1033 		/* Interrupt to test */
1034 		mask = BIT(i);
1035 
1036 		if (adapter->flags & FLAG_IS_ICH) {
1037 			switch (mask) {
1038 			case E1000_ICR_RXSEQ:
1039 				continue;
1040 			case 0x00000100:
1041 				if (adapter->hw.mac.type == e1000_ich8lan ||
1042 				    adapter->hw.mac.type == e1000_ich9lan)
1043 					continue;
1044 				break;
1045 			default:
1046 				break;
1047 			}
1048 		}
1049 
1050 		if (!shared_int) {
1051 			/* Disable the interrupt to be reported in
1052 			 * the cause register and then force the same
1053 			 * interrupt and see if one gets posted.  If
1054 			 * an interrupt was posted to the bus, the
1055 			 * test failed.
1056 			 */
1057 			adapter->test_icr = 0;
1058 			ew32(IMC, mask);
1059 			ew32(ICS, mask);
1060 			e1e_flush();
1061 			usleep_range(10000, 11000);
1062 
1063 			if (adapter->test_icr & mask) {
1064 				*data = 3;
1065 				break;
1066 			}
1067 		}
1068 
1069 		/* Enable the interrupt to be reported in
1070 		 * the cause register and then force the same
1071 		 * interrupt and see if one gets posted.  If
1072 		 * an interrupt was not posted to the bus, the
1073 		 * test failed.
1074 		 */
1075 		adapter->test_icr = 0;
1076 		ew32(IMS, mask);
1077 		ew32(ICS, mask);
1078 		e1e_flush();
1079 		usleep_range(10000, 11000);
1080 
1081 		if (!(adapter->test_icr & mask)) {
1082 			*data = 4;
1083 			break;
1084 		}
1085 
1086 		if (!shared_int) {
1087 			/* Disable the other interrupts to be reported in
1088 			 * the cause register and then force the other
1089 			 * interrupts and see if any get posted.  If
1090 			 * an interrupt was posted to the bus, the
1091 			 * test failed.
1092 			 */
1093 			adapter->test_icr = 0;
1094 			ew32(IMC, ~mask & 0x00007FFF);
1095 			ew32(ICS, ~mask & 0x00007FFF);
1096 			e1e_flush();
1097 			usleep_range(10000, 11000);
1098 
1099 			if (adapter->test_icr) {
1100 				*data = 5;
1101 				break;
1102 			}
1103 		}
1104 	}
1105 
1106 	/* Disable all the interrupts */
1107 	ew32(IMC, 0xFFFFFFFF);
1108 	e1e_flush();
1109 	usleep_range(10000, 11000);
1110 
1111 	/* Unhook test interrupt handler */
1112 	free_irq(irq, netdev);
1113 
1114 out:
1115 	if (int_mode == E1000E_INT_MODE_MSIX) {
1116 		e1000e_reset_interrupt_capability(adapter);
1117 		adapter->int_mode = int_mode;
1118 		e1000e_set_interrupt_capability(adapter);
1119 	}
1120 
1121 	return ret_val;
1122 }
1123 
e1000_free_desc_rings(struct e1000_adapter * adapter)1124 static void e1000_free_desc_rings(struct e1000_adapter *adapter)
1125 {
1126 	struct e1000_ring *tx_ring = &adapter->test_tx_ring;
1127 	struct e1000_ring *rx_ring = &adapter->test_rx_ring;
1128 	struct pci_dev *pdev = adapter->pdev;
1129 	struct e1000_buffer *buffer_info;
1130 	int i;
1131 
1132 	if (tx_ring->desc && tx_ring->buffer_info) {
1133 		for (i = 0; i < tx_ring->count; i++) {
1134 			buffer_info = &tx_ring->buffer_info[i];
1135 
1136 			if (buffer_info->dma)
1137 				dma_unmap_single(&pdev->dev,
1138 						 buffer_info->dma,
1139 						 buffer_info->length,
1140 						 DMA_TO_DEVICE);
1141 			dev_kfree_skb(buffer_info->skb);
1142 		}
1143 	}
1144 
1145 	if (rx_ring->desc && rx_ring->buffer_info) {
1146 		for (i = 0; i < rx_ring->count; i++) {
1147 			buffer_info = &rx_ring->buffer_info[i];
1148 
1149 			if (buffer_info->dma)
1150 				dma_unmap_single(&pdev->dev,
1151 						 buffer_info->dma,
1152 						 2048, DMA_FROM_DEVICE);
1153 			dev_kfree_skb(buffer_info->skb);
1154 		}
1155 	}
1156 
1157 	if (tx_ring->desc) {
1158 		dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
1159 				  tx_ring->dma);
1160 		tx_ring->desc = NULL;
1161 	}
1162 	if (rx_ring->desc) {
1163 		dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc,
1164 				  rx_ring->dma);
1165 		rx_ring->desc = NULL;
1166 	}
1167 
1168 	kfree(tx_ring->buffer_info);
1169 	tx_ring->buffer_info = NULL;
1170 	kfree(rx_ring->buffer_info);
1171 	rx_ring->buffer_info = NULL;
1172 }
1173 
e1000_setup_desc_rings(struct e1000_adapter * adapter)1174 static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
1175 {
1176 	struct e1000_ring *tx_ring = &adapter->test_tx_ring;
1177 	struct e1000_ring *rx_ring = &adapter->test_rx_ring;
1178 	struct pci_dev *pdev = adapter->pdev;
1179 	struct e1000_hw *hw = &adapter->hw;
1180 	u32 rctl;
1181 	int i;
1182 	int ret_val;
1183 
1184 	/* Setup Tx descriptor ring and Tx buffers */
1185 
1186 	if (!tx_ring->count)
1187 		tx_ring->count = E1000_DEFAULT_TXD;
1188 
1189 	tx_ring->buffer_info = kcalloc(tx_ring->count,
1190 				       sizeof(struct e1000_buffer), GFP_KERNEL);
1191 	if (!tx_ring->buffer_info) {
1192 		ret_val = 1;
1193 		goto err_nomem;
1194 	}
1195 
1196 	tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc);
1197 	tx_ring->size = ALIGN(tx_ring->size, 4096);
1198 	tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size,
1199 					   &tx_ring->dma, GFP_KERNEL);
1200 	if (!tx_ring->desc) {
1201 		ret_val = 2;
1202 		goto err_nomem;
1203 	}
1204 	tx_ring->next_to_use = 0;
1205 	tx_ring->next_to_clean = 0;
1206 
1207 	ew32(TDBAL(0), ((u64)tx_ring->dma & 0x00000000FFFFFFFF));
1208 	ew32(TDBAH(0), ((u64)tx_ring->dma >> 32));
1209 	ew32(TDLEN(0), tx_ring->count * sizeof(struct e1000_tx_desc));
1210 	ew32(TDH(0), 0);
1211 	ew32(TDT(0), 0);
1212 	ew32(TCTL, E1000_TCTL_PSP | E1000_TCTL_EN | E1000_TCTL_MULR |
1213 	     E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT |
1214 	     E1000_COLLISION_DISTANCE << E1000_COLD_SHIFT);
1215 
1216 	for (i = 0; i < tx_ring->count; i++) {
1217 		struct e1000_tx_desc *tx_desc = E1000_TX_DESC(*tx_ring, i);
1218 		struct sk_buff *skb;
1219 		unsigned int skb_size = 1024;
1220 
1221 		skb = alloc_skb(skb_size, GFP_KERNEL);
1222 		if (!skb) {
1223 			ret_val = 3;
1224 			goto err_nomem;
1225 		}
1226 		skb_put(skb, skb_size);
1227 		tx_ring->buffer_info[i].skb = skb;
1228 		tx_ring->buffer_info[i].length = skb->len;
1229 		tx_ring->buffer_info[i].dma =
1230 		    dma_map_single(&pdev->dev, skb->data, skb->len,
1231 				   DMA_TO_DEVICE);
1232 		if (dma_mapping_error(&pdev->dev,
1233 				      tx_ring->buffer_info[i].dma)) {
1234 			ret_val = 4;
1235 			goto err_nomem;
1236 		}
1237 		tx_desc->buffer_addr = cpu_to_le64(tx_ring->buffer_info[i].dma);
1238 		tx_desc->lower.data = cpu_to_le32(skb->len);
1239 		tx_desc->lower.data |= cpu_to_le32(E1000_TXD_CMD_EOP |
1240 						   E1000_TXD_CMD_IFCS |
1241 						   E1000_TXD_CMD_RS);
1242 		tx_desc->upper.data = 0;
1243 	}
1244 
1245 	/* Setup Rx descriptor ring and Rx buffers */
1246 
1247 	if (!rx_ring->count)
1248 		rx_ring->count = E1000_DEFAULT_RXD;
1249 
1250 	rx_ring->buffer_info = kcalloc(rx_ring->count,
1251 				       sizeof(struct e1000_buffer), GFP_KERNEL);
1252 	if (!rx_ring->buffer_info) {
1253 		ret_val = 5;
1254 		goto err_nomem;
1255 	}
1256 
1257 	rx_ring->size = rx_ring->count * sizeof(union e1000_rx_desc_extended);
1258 	rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size,
1259 					   &rx_ring->dma, GFP_KERNEL);
1260 	if (!rx_ring->desc) {
1261 		ret_val = 6;
1262 		goto err_nomem;
1263 	}
1264 	rx_ring->next_to_use = 0;
1265 	rx_ring->next_to_clean = 0;
1266 
1267 	rctl = er32(RCTL);
1268 	if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
1269 		ew32(RCTL, rctl & ~E1000_RCTL_EN);
1270 	ew32(RDBAL(0), ((u64)rx_ring->dma & 0xFFFFFFFF));
1271 	ew32(RDBAH(0), ((u64)rx_ring->dma >> 32));
1272 	ew32(RDLEN(0), rx_ring->size);
1273 	ew32(RDH(0), 0);
1274 	ew32(RDT(0), 0);
1275 	rctl = E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_SZ_2048 |
1276 	    E1000_RCTL_UPE | E1000_RCTL_MPE | E1000_RCTL_LPE |
1277 	    E1000_RCTL_SBP | E1000_RCTL_SECRC |
1278 	    E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
1279 	    (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT);
1280 	ew32(RCTL, rctl);
1281 
1282 	for (i = 0; i < rx_ring->count; i++) {
1283 		union e1000_rx_desc_extended *rx_desc;
1284 		struct sk_buff *skb;
1285 
1286 		skb = alloc_skb(2048 + NET_IP_ALIGN, GFP_KERNEL);
1287 		if (!skb) {
1288 			ret_val = 7;
1289 			goto err_nomem;
1290 		}
1291 		skb_reserve(skb, NET_IP_ALIGN);
1292 		rx_ring->buffer_info[i].skb = skb;
1293 		rx_ring->buffer_info[i].dma =
1294 		    dma_map_single(&pdev->dev, skb->data, 2048,
1295 				   DMA_FROM_DEVICE);
1296 		if (dma_mapping_error(&pdev->dev,
1297 				      rx_ring->buffer_info[i].dma)) {
1298 			ret_val = 8;
1299 			goto err_nomem;
1300 		}
1301 		rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
1302 		rx_desc->read.buffer_addr =
1303 		    cpu_to_le64(rx_ring->buffer_info[i].dma);
1304 		memset(skb->data, 0x00, skb->len);
1305 	}
1306 
1307 	return 0;
1308 
1309 err_nomem:
1310 	e1000_free_desc_rings(adapter);
1311 	return ret_val;
1312 }
1313 
e1000_phy_disable_receiver(struct e1000_adapter * adapter)1314 static void e1000_phy_disable_receiver(struct e1000_adapter *adapter)
1315 {
1316 	/* Write out to PHY registers 29 and 30 to disable the Receiver. */
1317 	e1e_wphy(&adapter->hw, 29, 0x001F);
1318 	e1e_wphy(&adapter->hw, 30, 0x8FFC);
1319 	e1e_wphy(&adapter->hw, 29, 0x001A);
1320 	e1e_wphy(&adapter->hw, 30, 0x8FF0);
1321 }
1322 
e1000_integrated_phy_loopback(struct e1000_adapter * adapter)1323 static int e1000_integrated_phy_loopback(struct e1000_adapter *adapter)
1324 {
1325 	struct e1000_hw *hw = &adapter->hw;
1326 	u32 ctrl_reg = 0;
1327 	u16 phy_reg = 0;
1328 	s32 ret_val = 0;
1329 
1330 	hw->mac.autoneg = 0;
1331 
1332 	if (hw->phy.type == e1000_phy_ife) {
1333 		/* force 100, set loopback */
1334 		e1e_wphy(hw, MII_BMCR, 0x6100);
1335 
1336 		/* Now set up the MAC to the same speed/duplex as the PHY. */
1337 		ctrl_reg = er32(CTRL);
1338 		ctrl_reg &= ~E1000_CTRL_SPD_SEL; /* Clear the speed sel bits */
1339 		ctrl_reg |= (E1000_CTRL_FRCSPD | /* Set the Force Speed Bit */
1340 			     E1000_CTRL_FRCDPX | /* Set the Force Duplex Bit */
1341 			     E1000_CTRL_SPD_100 |/* Force Speed to 100 */
1342 			     E1000_CTRL_FD);	 /* Force Duplex to FULL */
1343 
1344 		ew32(CTRL, ctrl_reg);
1345 		e1e_flush();
1346 		usleep_range(500, 1000);
1347 
1348 		return 0;
1349 	}
1350 
1351 	/* Specific PHY configuration for loopback */
1352 	switch (hw->phy.type) {
1353 	case e1000_phy_m88:
1354 		/* Auto-MDI/MDIX Off */
1355 		e1e_wphy(hw, M88E1000_PHY_SPEC_CTRL, 0x0808);
1356 		/* reset to update Auto-MDI/MDIX */
1357 		e1e_wphy(hw, MII_BMCR, 0x9140);
1358 		/* autoneg off */
1359 		e1e_wphy(hw, MII_BMCR, 0x8140);
1360 		break;
1361 	case e1000_phy_gg82563:
1362 		e1e_wphy(hw, GG82563_PHY_KMRN_MODE_CTRL, 0x1CC);
1363 		break;
1364 	case e1000_phy_bm:
1365 		/* Set Default MAC Interface speed to 1GB */
1366 		e1e_rphy(hw, PHY_REG(2, 21), &phy_reg);
1367 		phy_reg &= ~0x0007;
1368 		phy_reg |= 0x006;
1369 		e1e_wphy(hw, PHY_REG(2, 21), phy_reg);
1370 		/* Assert SW reset for above settings to take effect */
1371 		hw->phy.ops.commit(hw);
1372 		usleep_range(1000, 2000);
1373 		/* Force Full Duplex */
1374 		e1e_rphy(hw, PHY_REG(769, 16), &phy_reg);
1375 		e1e_wphy(hw, PHY_REG(769, 16), phy_reg | 0x000C);
1376 		/* Set Link Up (in force link) */
1377 		e1e_rphy(hw, PHY_REG(776, 16), &phy_reg);
1378 		e1e_wphy(hw, PHY_REG(776, 16), phy_reg | 0x0040);
1379 		/* Force Link */
1380 		e1e_rphy(hw, PHY_REG(769, 16), &phy_reg);
1381 		e1e_wphy(hw, PHY_REG(769, 16), phy_reg | 0x0040);
1382 		/* Set Early Link Enable */
1383 		e1e_rphy(hw, PHY_REG(769, 20), &phy_reg);
1384 		e1e_wphy(hw, PHY_REG(769, 20), phy_reg | 0x0400);
1385 		break;
1386 	case e1000_phy_82577:
1387 	case e1000_phy_82578:
1388 		/* Workaround: K1 must be disabled for stable 1Gbps operation */
1389 		ret_val = hw->phy.ops.acquire(hw);
1390 		if (ret_val) {
1391 			e_err("Cannot setup 1Gbps loopback.\n");
1392 			return ret_val;
1393 		}
1394 		e1000_configure_k1_ich8lan(hw, false);
1395 		hw->phy.ops.release(hw);
1396 		break;
1397 	case e1000_phy_82579:
1398 		/* Disable PHY energy detect power down */
1399 		e1e_rphy(hw, PHY_REG(0, 21), &phy_reg);
1400 		e1e_wphy(hw, PHY_REG(0, 21), phy_reg & ~BIT(3));
1401 		/* Disable full chip energy detect */
1402 		e1e_rphy(hw, PHY_REG(776, 18), &phy_reg);
1403 		e1e_wphy(hw, PHY_REG(776, 18), phy_reg | 1);
1404 		/* Enable loopback on the PHY */
1405 		e1e_wphy(hw, I82577_PHY_LBK_CTRL, 0x8001);
1406 		break;
1407 	default:
1408 		break;
1409 	}
1410 
1411 	/* force 1000, set loopback */
1412 	e1e_wphy(hw, MII_BMCR, 0x4140);
1413 	msleep(250);
1414 
1415 	/* Now set up the MAC to the same speed/duplex as the PHY. */
1416 	ctrl_reg = er32(CTRL);
1417 	ctrl_reg &= ~E1000_CTRL_SPD_SEL; /* Clear the speed sel bits */
1418 	ctrl_reg |= (E1000_CTRL_FRCSPD | /* Set the Force Speed Bit */
1419 		     E1000_CTRL_FRCDPX | /* Set the Force Duplex Bit */
1420 		     E1000_CTRL_SPD_1000 |/* Force Speed to 1000 */
1421 		     E1000_CTRL_FD);	 /* Force Duplex to FULL */
1422 
1423 	if (adapter->flags & FLAG_IS_ICH)
1424 		ctrl_reg |= E1000_CTRL_SLU;	/* Set Link Up */
1425 
1426 	if (hw->phy.media_type == e1000_media_type_copper &&
1427 	    hw->phy.type == e1000_phy_m88) {
1428 		ctrl_reg |= E1000_CTRL_ILOS;	/* Invert Loss of Signal */
1429 	} else {
1430 		/* Set the ILOS bit on the fiber Nic if half duplex link is
1431 		 * detected.
1432 		 */
1433 		if ((er32(STATUS) & E1000_STATUS_FD) == 0)
1434 			ctrl_reg |= (E1000_CTRL_ILOS | E1000_CTRL_SLU);
1435 	}
1436 
1437 	ew32(CTRL, ctrl_reg);
1438 
1439 	/* Disable the receiver on the PHY so when a cable is plugged in, the
1440 	 * PHY does not begin to autoneg when a cable is reconnected to the NIC.
1441 	 */
1442 	if (hw->phy.type == e1000_phy_m88)
1443 		e1000_phy_disable_receiver(adapter);
1444 
1445 	usleep_range(500, 1000);
1446 
1447 	return 0;
1448 }
1449 
e1000_set_82571_fiber_loopback(struct e1000_adapter * adapter)1450 static int e1000_set_82571_fiber_loopback(struct e1000_adapter *adapter)
1451 {
1452 	struct e1000_hw *hw = &adapter->hw;
1453 	u32 ctrl = er32(CTRL);
1454 	int link;
1455 
1456 	/* special requirements for 82571/82572 fiber adapters */
1457 
1458 	/* jump through hoops to make sure link is up because serdes
1459 	 * link is hardwired up
1460 	 */
1461 	ctrl |= E1000_CTRL_SLU;
1462 	ew32(CTRL, ctrl);
1463 
1464 	/* disable autoneg */
1465 	ctrl = er32(TXCW);
1466 	ctrl &= ~BIT(31);
1467 	ew32(TXCW, ctrl);
1468 
1469 	link = (er32(STATUS) & E1000_STATUS_LU);
1470 
1471 	if (!link) {
1472 		/* set invert loss of signal */
1473 		ctrl = er32(CTRL);
1474 		ctrl |= E1000_CTRL_ILOS;
1475 		ew32(CTRL, ctrl);
1476 	}
1477 
1478 	/* special write to serdes control register to enable SerDes analog
1479 	 * loopback
1480 	 */
1481 	ew32(SCTL, E1000_SCTL_ENABLE_SERDES_LOOPBACK);
1482 	e1e_flush();
1483 	usleep_range(10000, 11000);
1484 
1485 	return 0;
1486 }
1487 
1488 /* only call this for fiber/serdes connections to es2lan */
e1000_set_es2lan_mac_loopback(struct e1000_adapter * adapter)1489 static int e1000_set_es2lan_mac_loopback(struct e1000_adapter *adapter)
1490 {
1491 	struct e1000_hw *hw = &adapter->hw;
1492 	u32 ctrlext = er32(CTRL_EXT);
1493 	u32 ctrl = er32(CTRL);
1494 
1495 	/* save CTRL_EXT to restore later, reuse an empty variable (unused
1496 	 * on mac_type 80003es2lan)
1497 	 */
1498 	adapter->tx_fifo_head = ctrlext;
1499 
1500 	/* clear the serdes mode bits, putting the device into mac loopback */
1501 	ctrlext &= ~E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES;
1502 	ew32(CTRL_EXT, ctrlext);
1503 
1504 	/* force speed to 1000/FD, link up */
1505 	ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100);
1506 	ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX |
1507 		 E1000_CTRL_SPD_1000 | E1000_CTRL_FD);
1508 	ew32(CTRL, ctrl);
1509 
1510 	/* set mac loopback */
1511 	ctrl = er32(RCTL);
1512 	ctrl |= E1000_RCTL_LBM_MAC;
1513 	ew32(RCTL, ctrl);
1514 
1515 	/* set testing mode parameters (no need to reset later) */
1516 #define KMRNCTRLSTA_OPMODE (0x1F << 16)
1517 #define KMRNCTRLSTA_OPMODE_1GB_FD_GMII 0x0582
1518 	ew32(KMRNCTRLSTA,
1519 	     (KMRNCTRLSTA_OPMODE | KMRNCTRLSTA_OPMODE_1GB_FD_GMII));
1520 
1521 	return 0;
1522 }
1523 
e1000_setup_loopback_test(struct e1000_adapter * adapter)1524 static int e1000_setup_loopback_test(struct e1000_adapter *adapter)
1525 {
1526 	struct e1000_hw *hw = &adapter->hw;
1527 	u32 rctl, fext_nvm11, tarc0;
1528 
1529 	if (hw->mac.type >= e1000_pch_spt) {
1530 		fext_nvm11 = er32(FEXTNVM11);
1531 		fext_nvm11 |= E1000_FEXTNVM11_DISABLE_MULR_FIX;
1532 		ew32(FEXTNVM11, fext_nvm11);
1533 		tarc0 = er32(TARC(0));
1534 		/* clear bits 28 & 29 (control of MULR concurrent requests) */
1535 		tarc0 &= 0xcfffffff;
1536 		/* set bit 29 (value of MULR requests is now 2) */
1537 		tarc0 |= 0x20000000;
1538 		ew32(TARC(0), tarc0);
1539 	}
1540 	if (hw->phy.media_type == e1000_media_type_fiber ||
1541 	    hw->phy.media_type == e1000_media_type_internal_serdes) {
1542 		switch (hw->mac.type) {
1543 		case e1000_80003es2lan:
1544 			return e1000_set_es2lan_mac_loopback(adapter);
1545 		case e1000_82571:
1546 		case e1000_82572:
1547 			return e1000_set_82571_fiber_loopback(adapter);
1548 		default:
1549 			rctl = er32(RCTL);
1550 			rctl |= E1000_RCTL_LBM_TCVR;
1551 			ew32(RCTL, rctl);
1552 			return 0;
1553 		}
1554 	} else if (hw->phy.media_type == e1000_media_type_copper) {
1555 		return e1000_integrated_phy_loopback(adapter);
1556 	}
1557 
1558 	return 7;
1559 }
1560 
e1000_loopback_cleanup(struct e1000_adapter * adapter)1561 static void e1000_loopback_cleanup(struct e1000_adapter *adapter)
1562 {
1563 	struct e1000_hw *hw = &adapter->hw;
1564 	u32 rctl, fext_nvm11, tarc0;
1565 	u16 phy_reg;
1566 
1567 	rctl = er32(RCTL);
1568 	rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC);
1569 	ew32(RCTL, rctl);
1570 
1571 	switch (hw->mac.type) {
1572 	case e1000_pch_spt:
1573 	case e1000_pch_cnp:
1574 	case e1000_pch_tgp:
1575 	case e1000_pch_adp:
1576 	case e1000_pch_mtp:
1577 	case e1000_pch_lnp:
1578 		fext_nvm11 = er32(FEXTNVM11);
1579 		fext_nvm11 &= ~E1000_FEXTNVM11_DISABLE_MULR_FIX;
1580 		ew32(FEXTNVM11, fext_nvm11);
1581 		tarc0 = er32(TARC(0));
1582 		/* clear bits 28 & 29 (control of MULR concurrent requests) */
1583 		/* set bit 29 (value of MULR requests is now 0) */
1584 		tarc0 &= 0xcfffffff;
1585 		ew32(TARC(0), tarc0);
1586 		fallthrough;
1587 	case e1000_80003es2lan:
1588 		if (hw->phy.media_type == e1000_media_type_fiber ||
1589 		    hw->phy.media_type == e1000_media_type_internal_serdes) {
1590 			/* restore CTRL_EXT, stealing space from tx_fifo_head */
1591 			ew32(CTRL_EXT, adapter->tx_fifo_head);
1592 			adapter->tx_fifo_head = 0;
1593 		}
1594 		fallthrough;
1595 	case e1000_82571:
1596 	case e1000_82572:
1597 		if (hw->phy.media_type == e1000_media_type_fiber ||
1598 		    hw->phy.media_type == e1000_media_type_internal_serdes) {
1599 			ew32(SCTL, E1000_SCTL_DISABLE_SERDES_LOOPBACK);
1600 			e1e_flush();
1601 			usleep_range(10000, 11000);
1602 			break;
1603 		}
1604 		fallthrough;
1605 	default:
1606 		hw->mac.autoneg = 1;
1607 		if (hw->phy.type == e1000_phy_gg82563)
1608 			e1e_wphy(hw, GG82563_PHY_KMRN_MODE_CTRL, 0x180);
1609 		e1e_rphy(hw, MII_BMCR, &phy_reg);
1610 		if (phy_reg & BMCR_LOOPBACK) {
1611 			phy_reg &= ~BMCR_LOOPBACK;
1612 			e1e_wphy(hw, MII_BMCR, phy_reg);
1613 			if (hw->phy.ops.commit)
1614 				hw->phy.ops.commit(hw);
1615 		}
1616 		break;
1617 	}
1618 }
1619 
e1000_create_lbtest_frame(struct sk_buff * skb,unsigned int frame_size)1620 static void e1000_create_lbtest_frame(struct sk_buff *skb,
1621 				      unsigned int frame_size)
1622 {
1623 	memset(skb->data, 0xFF, frame_size);
1624 	frame_size &= ~1;
1625 	memset(&skb->data[frame_size / 2], 0xAA, frame_size / 2 - 1);
1626 	skb->data[frame_size / 2 + 10] = 0xBE;
1627 	skb->data[frame_size / 2 + 12] = 0xAF;
1628 }
1629 
e1000_check_lbtest_frame(struct sk_buff * skb,unsigned int frame_size)1630 static int e1000_check_lbtest_frame(struct sk_buff *skb,
1631 				    unsigned int frame_size)
1632 {
1633 	frame_size &= ~1;
1634 	if (*(skb->data + 3) == 0xFF)
1635 		if ((*(skb->data + frame_size / 2 + 10) == 0xBE) &&
1636 		    (*(skb->data + frame_size / 2 + 12) == 0xAF))
1637 			return 0;
1638 	return 13;
1639 }
1640 
e1000_run_loopback_test(struct e1000_adapter * adapter)1641 static int e1000_run_loopback_test(struct e1000_adapter *adapter)
1642 {
1643 	struct e1000_ring *tx_ring = &adapter->test_tx_ring;
1644 	struct e1000_ring *rx_ring = &adapter->test_rx_ring;
1645 	struct pci_dev *pdev = adapter->pdev;
1646 	struct e1000_hw *hw = &adapter->hw;
1647 	struct e1000_buffer *buffer_info;
1648 	int i, j, k, l;
1649 	int lc;
1650 	int good_cnt;
1651 	int ret_val = 0;
1652 	unsigned long time;
1653 
1654 	ew32(RDT(0), rx_ring->count - 1);
1655 
1656 	/* Calculate the loop count based on the largest descriptor ring
1657 	 * The idea is to wrap the largest ring a number of times using 64
1658 	 * send/receive pairs during each loop
1659 	 */
1660 
1661 	if (rx_ring->count <= tx_ring->count)
1662 		lc = ((tx_ring->count / 64) * 2) + 1;
1663 	else
1664 		lc = ((rx_ring->count / 64) * 2) + 1;
1665 
1666 	k = 0;
1667 	l = 0;
1668 	/* loop count loop */
1669 	for (j = 0; j <= lc; j++) {
1670 		/* send the packets */
1671 		for (i = 0; i < 64; i++) {
1672 			buffer_info = &tx_ring->buffer_info[k];
1673 
1674 			e1000_create_lbtest_frame(buffer_info->skb, 1024);
1675 			dma_sync_single_for_device(&pdev->dev,
1676 						   buffer_info->dma,
1677 						   buffer_info->length,
1678 						   DMA_TO_DEVICE);
1679 			k++;
1680 			if (k == tx_ring->count)
1681 				k = 0;
1682 		}
1683 		ew32(TDT(0), k);
1684 		e1e_flush();
1685 		msleep(200);
1686 		time = jiffies;	/* set the start time for the receive */
1687 		good_cnt = 0;
1688 		/* receive the sent packets */
1689 		do {
1690 			buffer_info = &rx_ring->buffer_info[l];
1691 
1692 			dma_sync_single_for_cpu(&pdev->dev,
1693 						buffer_info->dma, 2048,
1694 						DMA_FROM_DEVICE);
1695 
1696 			ret_val = e1000_check_lbtest_frame(buffer_info->skb,
1697 							   1024);
1698 			if (!ret_val)
1699 				good_cnt++;
1700 			l++;
1701 			if (l == rx_ring->count)
1702 				l = 0;
1703 			/* time + 20 msecs (200 msecs on 2.4) is more than
1704 			 * enough time to complete the receives, if it's
1705 			 * exceeded, break and error off
1706 			 */
1707 		} while ((good_cnt < 64) && !time_after(jiffies, time + 20));
1708 		if (good_cnt != 64) {
1709 			ret_val = 13;	/* ret_val is the same as mis-compare */
1710 			break;
1711 		}
1712 		if (time_after(jiffies, time + 20)) {
1713 			ret_val = 14;	/* error code for time out error */
1714 			break;
1715 		}
1716 	}
1717 	return ret_val;
1718 }
1719 
e1000_loopback_test(struct e1000_adapter * adapter,u64 * data)1720 static int e1000_loopback_test(struct e1000_adapter *adapter, u64 *data)
1721 {
1722 	struct e1000_hw *hw = &adapter->hw;
1723 
1724 	/* PHY loopback cannot be performed if SoL/IDER sessions are active */
1725 	if (hw->phy.ops.check_reset_block &&
1726 	    hw->phy.ops.check_reset_block(hw)) {
1727 		e_err("Cannot do PHY loopback test when SoL/IDER is active.\n");
1728 		*data = 0;
1729 		goto out;
1730 	}
1731 
1732 	*data = e1000_setup_desc_rings(adapter);
1733 	if (*data)
1734 		goto out;
1735 
1736 	*data = e1000_setup_loopback_test(adapter);
1737 	if (*data)
1738 		goto err_loopback;
1739 
1740 	*data = e1000_run_loopback_test(adapter);
1741 	e1000_loopback_cleanup(adapter);
1742 
1743 err_loopback:
1744 	e1000_free_desc_rings(adapter);
1745 out:
1746 	return *data;
1747 }
1748 
e1000_link_test(struct e1000_adapter * adapter,u64 * data)1749 static int e1000_link_test(struct e1000_adapter *adapter, u64 *data)
1750 {
1751 	struct e1000_hw *hw = &adapter->hw;
1752 
1753 	*data = 0;
1754 	if (hw->phy.media_type == e1000_media_type_internal_serdes) {
1755 		int i = 0;
1756 
1757 		hw->mac.serdes_has_link = false;
1758 
1759 		/* On some blade server designs, link establishment
1760 		 * could take as long as 2-3 minutes
1761 		 */
1762 		do {
1763 			hw->mac.ops.check_for_link(hw);
1764 			if (hw->mac.serdes_has_link)
1765 				return *data;
1766 			msleep(20);
1767 		} while (i++ < 3750);
1768 
1769 		*data = 1;
1770 	} else {
1771 		hw->mac.ops.check_for_link(hw);
1772 		if (hw->mac.autoneg)
1773 			/* On some Phy/switch combinations, link establishment
1774 			 * can take a few seconds more than expected.
1775 			 */
1776 			msleep_interruptible(5000);
1777 
1778 		if (!(er32(STATUS) & E1000_STATUS_LU))
1779 			*data = 1;
1780 	}
1781 	return *data;
1782 }
1783 
e1000e_get_sset_count(struct net_device __always_unused * netdev,int sset)1784 static int e1000e_get_sset_count(struct net_device __always_unused *netdev,
1785 				 int sset)
1786 {
1787 	switch (sset) {
1788 	case ETH_SS_TEST:
1789 		return E1000_TEST_LEN;
1790 	case ETH_SS_STATS:
1791 		return E1000_STATS_LEN;
1792 	case ETH_SS_PRIV_FLAGS:
1793 		return E1000E_PRIV_FLAGS_STR_LEN;
1794 	default:
1795 		return -EOPNOTSUPP;
1796 	}
1797 }
1798 
e1000_diag_test(struct net_device * netdev,struct ethtool_test * eth_test,u64 * data)1799 static void e1000_diag_test(struct net_device *netdev,
1800 			    struct ethtool_test *eth_test, u64 *data)
1801 {
1802 	struct e1000_adapter *adapter = netdev_priv(netdev);
1803 	u16 autoneg_advertised;
1804 	u8 forced_speed_duplex;
1805 	u8 autoneg;
1806 	bool if_running = netif_running(netdev);
1807 
1808 	pm_runtime_get_sync(netdev->dev.parent);
1809 
1810 	set_bit(__E1000_TESTING, &adapter->state);
1811 
1812 	if (!if_running) {
1813 		/* Get control of and reset hardware */
1814 		if (adapter->flags & FLAG_HAS_AMT)
1815 			e1000e_get_hw_control(adapter);
1816 
1817 		e1000e_power_up_phy(adapter);
1818 
1819 		adapter->hw.phy.autoneg_wait_to_complete = 1;
1820 		e1000e_reset(adapter);
1821 		adapter->hw.phy.autoneg_wait_to_complete = 0;
1822 	}
1823 
1824 	if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
1825 		/* Offline tests */
1826 
1827 		/* save speed, duplex, autoneg settings */
1828 		autoneg_advertised = adapter->hw.phy.autoneg_advertised;
1829 		forced_speed_duplex = adapter->hw.mac.forced_speed_duplex;
1830 		autoneg = adapter->hw.mac.autoneg;
1831 
1832 		e_info("offline testing starting\n");
1833 
1834 		if (if_running)
1835 			/* indicate we're in test mode */
1836 			e1000e_close(netdev);
1837 
1838 		if (e1000_reg_test(adapter, &data[0]))
1839 			eth_test->flags |= ETH_TEST_FL_FAILED;
1840 
1841 		e1000e_reset(adapter);
1842 		if (e1000_eeprom_test(adapter, &data[1]))
1843 			eth_test->flags |= ETH_TEST_FL_FAILED;
1844 
1845 		e1000e_reset(adapter);
1846 		if (e1000_intr_test(adapter, &data[2]))
1847 			eth_test->flags |= ETH_TEST_FL_FAILED;
1848 
1849 		e1000e_reset(adapter);
1850 		if (e1000_loopback_test(adapter, &data[3]))
1851 			eth_test->flags |= ETH_TEST_FL_FAILED;
1852 
1853 		/* force this routine to wait until autoneg complete/timeout */
1854 		adapter->hw.phy.autoneg_wait_to_complete = 1;
1855 		e1000e_reset(adapter);
1856 		adapter->hw.phy.autoneg_wait_to_complete = 0;
1857 
1858 		if (e1000_link_test(adapter, &data[4]))
1859 			eth_test->flags |= ETH_TEST_FL_FAILED;
1860 
1861 		/* restore speed, duplex, autoneg settings */
1862 		adapter->hw.phy.autoneg_advertised = autoneg_advertised;
1863 		adapter->hw.mac.forced_speed_duplex = forced_speed_duplex;
1864 		adapter->hw.mac.autoneg = autoneg;
1865 		e1000e_reset(adapter);
1866 
1867 		clear_bit(__E1000_TESTING, &adapter->state);
1868 		if (if_running)
1869 			e1000e_open(netdev);
1870 	} else {
1871 		/* Online tests */
1872 
1873 		e_info("online testing starting\n");
1874 
1875 		/* register, eeprom, intr and loopback tests not run online */
1876 		data[0] = 0;
1877 		data[1] = 0;
1878 		data[2] = 0;
1879 		data[3] = 0;
1880 
1881 		if (e1000_link_test(adapter, &data[4]))
1882 			eth_test->flags |= ETH_TEST_FL_FAILED;
1883 
1884 		clear_bit(__E1000_TESTING, &adapter->state);
1885 	}
1886 
1887 	if (!if_running) {
1888 		e1000e_reset(adapter);
1889 
1890 		if (adapter->flags & FLAG_HAS_AMT)
1891 			e1000e_release_hw_control(adapter);
1892 	}
1893 
1894 	msleep_interruptible(4 * 1000);
1895 
1896 	pm_runtime_put_sync(netdev->dev.parent);
1897 }
1898 
e1000_get_wol(struct net_device * netdev,struct ethtool_wolinfo * wol)1899 static void e1000_get_wol(struct net_device *netdev,
1900 			  struct ethtool_wolinfo *wol)
1901 {
1902 	struct e1000_adapter *adapter = netdev_priv(netdev);
1903 
1904 	wol->supported = 0;
1905 	wol->wolopts = 0;
1906 
1907 	if (!(adapter->flags & FLAG_HAS_WOL) ||
1908 	    !device_can_wakeup(&adapter->pdev->dev))
1909 		return;
1910 
1911 	wol->supported = WAKE_UCAST | WAKE_MCAST |
1912 	    WAKE_BCAST | WAKE_MAGIC | WAKE_PHY;
1913 
1914 	/* apply any specific unsupported masks here */
1915 	if (adapter->flags & FLAG_NO_WAKE_UCAST) {
1916 		wol->supported &= ~WAKE_UCAST;
1917 
1918 		if (adapter->wol & E1000_WUFC_EX)
1919 			e_err("Interface does not support directed (unicast) frame wake-up packets\n");
1920 	}
1921 
1922 	if (adapter->wol & E1000_WUFC_EX)
1923 		wol->wolopts |= WAKE_UCAST;
1924 	if (adapter->wol & E1000_WUFC_MC)
1925 		wol->wolopts |= WAKE_MCAST;
1926 	if (adapter->wol & E1000_WUFC_BC)
1927 		wol->wolopts |= WAKE_BCAST;
1928 	if (adapter->wol & E1000_WUFC_MAG)
1929 		wol->wolopts |= WAKE_MAGIC;
1930 	if (adapter->wol & E1000_WUFC_LNKC)
1931 		wol->wolopts |= WAKE_PHY;
1932 }
1933 
e1000_set_wol(struct net_device * netdev,struct ethtool_wolinfo * wol)1934 static int e1000_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
1935 {
1936 	struct e1000_adapter *adapter = netdev_priv(netdev);
1937 
1938 	if (!(adapter->flags & FLAG_HAS_WOL) ||
1939 	    !device_can_wakeup(&adapter->pdev->dev) ||
1940 	    (wol->wolopts & ~(WAKE_UCAST | WAKE_MCAST | WAKE_BCAST |
1941 			      WAKE_MAGIC | WAKE_PHY)))
1942 		return -EOPNOTSUPP;
1943 
1944 	/* these settings will always override what we currently have */
1945 	adapter->wol = 0;
1946 
1947 	if (wol->wolopts & WAKE_UCAST)
1948 		adapter->wol |= E1000_WUFC_EX;
1949 	if (wol->wolopts & WAKE_MCAST)
1950 		adapter->wol |= E1000_WUFC_MC;
1951 	if (wol->wolopts & WAKE_BCAST)
1952 		adapter->wol |= E1000_WUFC_BC;
1953 	if (wol->wolopts & WAKE_MAGIC)
1954 		adapter->wol |= E1000_WUFC_MAG;
1955 	if (wol->wolopts & WAKE_PHY)
1956 		adapter->wol |= E1000_WUFC_LNKC;
1957 
1958 	device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
1959 
1960 	return 0;
1961 }
1962 
e1000_set_phys_id(struct net_device * netdev,enum ethtool_phys_id_state state)1963 static int e1000_set_phys_id(struct net_device *netdev,
1964 			     enum ethtool_phys_id_state state)
1965 {
1966 	struct e1000_adapter *adapter = netdev_priv(netdev);
1967 	struct e1000_hw *hw = &adapter->hw;
1968 
1969 	switch (state) {
1970 	case ETHTOOL_ID_ACTIVE:
1971 		pm_runtime_get_sync(netdev->dev.parent);
1972 
1973 		if (!hw->mac.ops.blink_led)
1974 			return 2;	/* cycle on/off twice per second */
1975 
1976 		hw->mac.ops.blink_led(hw);
1977 		break;
1978 
1979 	case ETHTOOL_ID_INACTIVE:
1980 		if (hw->phy.type == e1000_phy_ife)
1981 			e1e_wphy(hw, IFE_PHY_SPECIAL_CONTROL_LED, 0);
1982 		hw->mac.ops.led_off(hw);
1983 		hw->mac.ops.cleanup_led(hw);
1984 		pm_runtime_put_sync(netdev->dev.parent);
1985 		break;
1986 
1987 	case ETHTOOL_ID_ON:
1988 		hw->mac.ops.led_on(hw);
1989 		break;
1990 
1991 	case ETHTOOL_ID_OFF:
1992 		hw->mac.ops.led_off(hw);
1993 		break;
1994 	}
1995 
1996 	return 0;
1997 }
1998 
e1000_get_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)1999 static int e1000_get_coalesce(struct net_device *netdev,
2000 			      struct ethtool_coalesce *ec,
2001 			      struct kernel_ethtool_coalesce *kernel_coal,
2002 			      struct netlink_ext_ack *extack)
2003 {
2004 	struct e1000_adapter *adapter = netdev_priv(netdev);
2005 
2006 	if (adapter->itr_setting <= 4)
2007 		ec->rx_coalesce_usecs = adapter->itr_setting;
2008 	else
2009 		ec->rx_coalesce_usecs = 1000000 / adapter->itr_setting;
2010 
2011 	return 0;
2012 }
2013 
e1000_set_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)2014 static int e1000_set_coalesce(struct net_device *netdev,
2015 			      struct ethtool_coalesce *ec,
2016 			      struct kernel_ethtool_coalesce *kernel_coal,
2017 			      struct netlink_ext_ack *extack)
2018 {
2019 	struct e1000_adapter *adapter = netdev_priv(netdev);
2020 
2021 	if ((ec->rx_coalesce_usecs > E1000_MAX_ITR_USECS) ||
2022 	    ((ec->rx_coalesce_usecs > 4) &&
2023 	     (ec->rx_coalesce_usecs < E1000_MIN_ITR_USECS)) ||
2024 	    (ec->rx_coalesce_usecs == 2))
2025 		return -EINVAL;
2026 
2027 	if (ec->rx_coalesce_usecs == 4) {
2028 		adapter->itr_setting = 4;
2029 		adapter->itr = adapter->itr_setting;
2030 	} else if (ec->rx_coalesce_usecs <= 3) {
2031 		adapter->itr = 20000;
2032 		adapter->itr_setting = ec->rx_coalesce_usecs;
2033 	} else {
2034 		adapter->itr = (1000000 / ec->rx_coalesce_usecs);
2035 		adapter->itr_setting = adapter->itr & ~3;
2036 	}
2037 
2038 	pm_runtime_get_sync(netdev->dev.parent);
2039 
2040 	if (adapter->itr_setting != 0)
2041 		e1000e_write_itr(adapter, adapter->itr);
2042 	else
2043 		e1000e_write_itr(adapter, 0);
2044 
2045 	pm_runtime_put_sync(netdev->dev.parent);
2046 
2047 	return 0;
2048 }
2049 
e1000_nway_reset(struct net_device * netdev)2050 static int e1000_nway_reset(struct net_device *netdev)
2051 {
2052 	struct e1000_adapter *adapter = netdev_priv(netdev);
2053 
2054 	if (!netif_running(netdev))
2055 		return -EAGAIN;
2056 
2057 	if (!adapter->hw.mac.autoneg)
2058 		return -EINVAL;
2059 
2060 	pm_runtime_get_sync(netdev->dev.parent);
2061 	e1000e_reinit_locked(adapter);
2062 	pm_runtime_put_sync(netdev->dev.parent);
2063 
2064 	return 0;
2065 }
2066 
e1000_get_ethtool_stats(struct net_device * netdev,struct ethtool_stats __always_unused * stats,u64 * data)2067 static void e1000_get_ethtool_stats(struct net_device *netdev,
2068 				    struct ethtool_stats __always_unused *stats,
2069 				    u64 *data)
2070 {
2071 	struct e1000_adapter *adapter = netdev_priv(netdev);
2072 	struct rtnl_link_stats64 net_stats;
2073 	int i;
2074 	char *p = NULL;
2075 
2076 	pm_runtime_get_sync(netdev->dev.parent);
2077 
2078 	dev_get_stats(netdev, &net_stats);
2079 
2080 	pm_runtime_put_sync(netdev->dev.parent);
2081 
2082 	for (i = 0; i < E1000_GLOBAL_STATS_LEN; i++) {
2083 		switch (e1000_gstrings_stats[i].type) {
2084 		case NETDEV_STATS:
2085 			p = (char *)&net_stats +
2086 			    e1000_gstrings_stats[i].stat_offset;
2087 			break;
2088 		case E1000_STATS:
2089 			p = (char *)adapter +
2090 			    e1000_gstrings_stats[i].stat_offset;
2091 			break;
2092 		default:
2093 			data[i] = 0;
2094 			continue;
2095 		}
2096 
2097 		data[i] = (e1000_gstrings_stats[i].sizeof_stat ==
2098 			   sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
2099 	}
2100 }
2101 
e1000_get_strings(struct net_device __always_unused * netdev,u32 stringset,u8 * data)2102 static void e1000_get_strings(struct net_device __always_unused *netdev,
2103 			      u32 stringset, u8 *data)
2104 {
2105 	u8 *p = data;
2106 	int i;
2107 
2108 	switch (stringset) {
2109 	case ETH_SS_TEST:
2110 		memcpy(data, e1000_gstrings_test, sizeof(e1000_gstrings_test));
2111 		break;
2112 	case ETH_SS_STATS:
2113 		for (i = 0; i < E1000_GLOBAL_STATS_LEN; i++) {
2114 			memcpy(p, e1000_gstrings_stats[i].stat_string,
2115 			       ETH_GSTRING_LEN);
2116 			p += ETH_GSTRING_LEN;
2117 		}
2118 		break;
2119 	case ETH_SS_PRIV_FLAGS:
2120 		memcpy(data, e1000e_priv_flags_strings,
2121 		       E1000E_PRIV_FLAGS_STR_LEN * ETH_GSTRING_LEN);
2122 		break;
2123 	}
2124 }
2125 
e1000_get_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * info,u32 __always_unused * rule_locs)2126 static int e1000_get_rxnfc(struct net_device *netdev,
2127 			   struct ethtool_rxnfc *info,
2128 			   u32 __always_unused *rule_locs)
2129 {
2130 	info->data = 0;
2131 
2132 	switch (info->cmd) {
2133 	case ETHTOOL_GRXFH: {
2134 		struct e1000_adapter *adapter = netdev_priv(netdev);
2135 		struct e1000_hw *hw = &adapter->hw;
2136 		u32 mrqc;
2137 
2138 		pm_runtime_get_sync(netdev->dev.parent);
2139 		mrqc = er32(MRQC);
2140 		pm_runtime_put_sync(netdev->dev.parent);
2141 
2142 		if (!(mrqc & E1000_MRQC_RSS_FIELD_MASK))
2143 			return 0;
2144 
2145 		switch (info->flow_type) {
2146 		case TCP_V4_FLOW:
2147 			if (mrqc & E1000_MRQC_RSS_FIELD_IPV4_TCP)
2148 				info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
2149 			fallthrough;
2150 		case UDP_V4_FLOW:
2151 		case SCTP_V4_FLOW:
2152 		case AH_ESP_V4_FLOW:
2153 		case IPV4_FLOW:
2154 			if (mrqc & E1000_MRQC_RSS_FIELD_IPV4)
2155 				info->data |= RXH_IP_SRC | RXH_IP_DST;
2156 			break;
2157 		case TCP_V6_FLOW:
2158 			if (mrqc & E1000_MRQC_RSS_FIELD_IPV6_TCP)
2159 				info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
2160 			fallthrough;
2161 		case UDP_V6_FLOW:
2162 		case SCTP_V6_FLOW:
2163 		case AH_ESP_V6_FLOW:
2164 		case IPV6_FLOW:
2165 			if (mrqc & E1000_MRQC_RSS_FIELD_IPV6)
2166 				info->data |= RXH_IP_SRC | RXH_IP_DST;
2167 			break;
2168 		default:
2169 			break;
2170 		}
2171 		return 0;
2172 	}
2173 	default:
2174 		return -EOPNOTSUPP;
2175 	}
2176 }
2177 
e1000e_get_eee(struct net_device * netdev,struct ethtool_eee * edata)2178 static int e1000e_get_eee(struct net_device *netdev, struct ethtool_eee *edata)
2179 {
2180 	struct e1000_adapter *adapter = netdev_priv(netdev);
2181 	struct e1000_hw *hw = &adapter->hw;
2182 	u16 cap_addr, lpa_addr, pcs_stat_addr, phy_data;
2183 	u32 ret_val;
2184 
2185 	if (!(adapter->flags2 & FLAG2_HAS_EEE))
2186 		return -EOPNOTSUPP;
2187 
2188 	switch (hw->phy.type) {
2189 	case e1000_phy_82579:
2190 		cap_addr = I82579_EEE_CAPABILITY;
2191 		lpa_addr = I82579_EEE_LP_ABILITY;
2192 		pcs_stat_addr = I82579_EEE_PCS_STATUS;
2193 		break;
2194 	case e1000_phy_i217:
2195 		cap_addr = I217_EEE_CAPABILITY;
2196 		lpa_addr = I217_EEE_LP_ABILITY;
2197 		pcs_stat_addr = I217_EEE_PCS_STATUS;
2198 		break;
2199 	default:
2200 		return -EOPNOTSUPP;
2201 	}
2202 
2203 	pm_runtime_get_sync(netdev->dev.parent);
2204 
2205 	ret_val = hw->phy.ops.acquire(hw);
2206 	if (ret_val) {
2207 		pm_runtime_put_sync(netdev->dev.parent);
2208 		return -EBUSY;
2209 	}
2210 
2211 	/* EEE Capability */
2212 	ret_val = e1000_read_emi_reg_locked(hw, cap_addr, &phy_data);
2213 	if (ret_val)
2214 		goto release;
2215 	edata->supported = mmd_eee_cap_to_ethtool_sup_t(phy_data);
2216 
2217 	/* EEE Advertised */
2218 	edata->advertised = mmd_eee_adv_to_ethtool_adv_t(adapter->eee_advert);
2219 
2220 	/* EEE Link Partner Advertised */
2221 	ret_val = e1000_read_emi_reg_locked(hw, lpa_addr, &phy_data);
2222 	if (ret_val)
2223 		goto release;
2224 	edata->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(phy_data);
2225 
2226 	/* EEE PCS Status */
2227 	ret_val = e1000_read_emi_reg_locked(hw, pcs_stat_addr, &phy_data);
2228 	if (ret_val)
2229 		goto release;
2230 	if (hw->phy.type == e1000_phy_82579)
2231 		phy_data <<= 8;
2232 
2233 	/* Result of the EEE auto negotiation - there is no register that
2234 	 * has the status of the EEE negotiation so do a best-guess based
2235 	 * on whether Tx or Rx LPI indications have been received.
2236 	 */
2237 	if (phy_data & (E1000_EEE_TX_LPI_RCVD | E1000_EEE_RX_LPI_RCVD))
2238 		edata->eee_active = true;
2239 
2240 	edata->eee_enabled = !hw->dev_spec.ich8lan.eee_disable;
2241 	edata->tx_lpi_enabled = true;
2242 	edata->tx_lpi_timer = er32(LPIC) >> E1000_LPIC_LPIET_SHIFT;
2243 
2244 release:
2245 	hw->phy.ops.release(hw);
2246 	if (ret_val)
2247 		ret_val = -ENODATA;
2248 
2249 	pm_runtime_put_sync(netdev->dev.parent);
2250 
2251 	return ret_val;
2252 }
2253 
e1000e_set_eee(struct net_device * netdev,struct ethtool_eee * edata)2254 static int e1000e_set_eee(struct net_device *netdev, struct ethtool_eee *edata)
2255 {
2256 	struct e1000_adapter *adapter = netdev_priv(netdev);
2257 	struct e1000_hw *hw = &adapter->hw;
2258 	struct ethtool_eee eee_curr;
2259 	s32 ret_val;
2260 
2261 	ret_val = e1000e_get_eee(netdev, &eee_curr);
2262 	if (ret_val)
2263 		return ret_val;
2264 
2265 	if (eee_curr.tx_lpi_enabled != edata->tx_lpi_enabled) {
2266 		e_err("Setting EEE tx-lpi is not supported\n");
2267 		return -EINVAL;
2268 	}
2269 
2270 	if (eee_curr.tx_lpi_timer != edata->tx_lpi_timer) {
2271 		e_err("Setting EEE Tx LPI timer is not supported\n");
2272 		return -EINVAL;
2273 	}
2274 
2275 	if (edata->advertised & ~(ADVERTISE_100_FULL | ADVERTISE_1000_FULL)) {
2276 		e_err("EEE advertisement supports only 100TX and/or 1000T full-duplex\n");
2277 		return -EINVAL;
2278 	}
2279 
2280 	adapter->eee_advert = ethtool_adv_to_mmd_eee_adv_t(edata->advertised);
2281 
2282 	hw->dev_spec.ich8lan.eee_disable = !edata->eee_enabled;
2283 
2284 	pm_runtime_get_sync(netdev->dev.parent);
2285 
2286 	/* reset the link */
2287 	if (netif_running(netdev))
2288 		e1000e_reinit_locked(adapter);
2289 	else
2290 		e1000e_reset(adapter);
2291 
2292 	pm_runtime_put_sync(netdev->dev.parent);
2293 
2294 	return 0;
2295 }
2296 
e1000e_get_ts_info(struct net_device * netdev,struct ethtool_ts_info * info)2297 static int e1000e_get_ts_info(struct net_device *netdev,
2298 			      struct ethtool_ts_info *info)
2299 {
2300 	struct e1000_adapter *adapter = netdev_priv(netdev);
2301 
2302 	ethtool_op_get_ts_info(netdev, info);
2303 
2304 	if (!(adapter->flags & FLAG_HAS_HW_TIMESTAMP))
2305 		return 0;
2306 
2307 	info->so_timestamping |= (SOF_TIMESTAMPING_TX_HARDWARE |
2308 				  SOF_TIMESTAMPING_RX_HARDWARE |
2309 				  SOF_TIMESTAMPING_RAW_HARDWARE);
2310 
2311 	info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
2312 
2313 	info->rx_filters = (BIT(HWTSTAMP_FILTER_NONE) |
2314 			    BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
2315 			    BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
2316 			    BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
2317 			    BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ) |
2318 			    BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
2319 			    BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ) |
2320 			    BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) |
2321 			    BIT(HWTSTAMP_FILTER_PTP_V2_SYNC) |
2322 			    BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
2323 			    BIT(HWTSTAMP_FILTER_ALL));
2324 
2325 	if (adapter->ptp_clock)
2326 		info->phc_index = ptp_clock_index(adapter->ptp_clock);
2327 
2328 	return 0;
2329 }
2330 
e1000e_get_priv_flags(struct net_device * netdev)2331 static u32 e1000e_get_priv_flags(struct net_device *netdev)
2332 {
2333 	struct e1000_adapter *adapter = netdev_priv(netdev);
2334 	u32 priv_flags = 0;
2335 
2336 	if (adapter->flags2 & FLAG2_ENABLE_S0IX_FLOWS)
2337 		priv_flags |= E1000E_PRIV_FLAGS_S0IX_ENABLED;
2338 
2339 	return priv_flags;
2340 }
2341 
e1000e_set_priv_flags(struct net_device * netdev,u32 priv_flags)2342 static int e1000e_set_priv_flags(struct net_device *netdev, u32 priv_flags)
2343 {
2344 	struct e1000_adapter *adapter = netdev_priv(netdev);
2345 	unsigned int flags2 = adapter->flags2;
2346 
2347 	flags2 &= ~FLAG2_ENABLE_S0IX_FLOWS;
2348 	if (priv_flags & E1000E_PRIV_FLAGS_S0IX_ENABLED) {
2349 		struct e1000_hw *hw = &adapter->hw;
2350 
2351 		if (hw->mac.type < e1000_pch_cnp)
2352 			return -EINVAL;
2353 		flags2 |= FLAG2_ENABLE_S0IX_FLOWS;
2354 	}
2355 
2356 	if (flags2 != adapter->flags2)
2357 		adapter->flags2 = flags2;
2358 
2359 	return 0;
2360 }
2361 
2362 static const struct ethtool_ops e1000_ethtool_ops = {
2363 	.supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS,
2364 	.get_drvinfo		= e1000_get_drvinfo,
2365 	.get_regs_len		= e1000_get_regs_len,
2366 	.get_regs		= e1000_get_regs,
2367 	.get_wol		= e1000_get_wol,
2368 	.set_wol		= e1000_set_wol,
2369 	.get_msglevel		= e1000_get_msglevel,
2370 	.set_msglevel		= e1000_set_msglevel,
2371 	.nway_reset		= e1000_nway_reset,
2372 	.get_link		= ethtool_op_get_link,
2373 	.get_eeprom_len		= e1000_get_eeprom_len,
2374 	.get_eeprom		= e1000_get_eeprom,
2375 	.set_eeprom		= e1000_set_eeprom,
2376 	.get_ringparam		= e1000_get_ringparam,
2377 	.set_ringparam		= e1000_set_ringparam,
2378 	.get_pauseparam		= e1000_get_pauseparam,
2379 	.set_pauseparam		= e1000_set_pauseparam,
2380 	.self_test		= e1000_diag_test,
2381 	.get_strings		= e1000_get_strings,
2382 	.set_phys_id		= e1000_set_phys_id,
2383 	.get_ethtool_stats	= e1000_get_ethtool_stats,
2384 	.get_sset_count		= e1000e_get_sset_count,
2385 	.get_coalesce		= e1000_get_coalesce,
2386 	.set_coalesce		= e1000_set_coalesce,
2387 	.get_rxnfc		= e1000_get_rxnfc,
2388 	.get_ts_info		= e1000e_get_ts_info,
2389 	.get_eee		= e1000e_get_eee,
2390 	.set_eee		= e1000e_set_eee,
2391 	.get_link_ksettings	= e1000_get_link_ksettings,
2392 	.set_link_ksettings	= e1000_set_link_ksettings,
2393 	.get_priv_flags		= e1000e_get_priv_flags,
2394 	.set_priv_flags		= e1000e_set_priv_flags,
2395 };
2396 
e1000e_set_ethtool_ops(struct net_device * netdev)2397 void e1000e_set_ethtool_ops(struct net_device *netdev)
2398 {
2399 	netdev->ethtool_ops = &e1000_ethtool_ops;
2400 }
2401