1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright(c) 2007 Atheros Corporation. All rights reserved.
4 *
5 * Derived from Intel e1000 driver
6 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
7 */
8
9#include <linux/netdevice.h>
10#include <linux/ethtool.h>
11#include <linux/slab.h>
12
13#include "atl1e.h"
14
15static int atl1e_get_link_ksettings(struct net_device *netdev,
16				    struct ethtool_link_ksettings *cmd)
17{
18	struct atl1e_adapter *adapter = netdev_priv(netdev);
19	struct atl1e_hw *hw = &adapter->hw;
20	u32 supported, advertising;
21
22	supported = (SUPPORTED_10baseT_Half  |
23			   SUPPORTED_10baseT_Full  |
24			   SUPPORTED_100baseT_Half |
25			   SUPPORTED_100baseT_Full |
26			   SUPPORTED_Autoneg       |
27			   SUPPORTED_TP);
28	if (hw->nic_type == athr_l1e)
29		supported |= SUPPORTED_1000baseT_Full;
30
31	advertising = ADVERTISED_TP;
32
33	advertising |= ADVERTISED_Autoneg;
34	advertising |= hw->autoneg_advertised;
35
36	cmd->base.port = PORT_TP;
37	cmd->base.phy_address = 0;
38
39	if (adapter->link_speed != SPEED_0) {
40		cmd->base.speed = adapter->link_speed;
41		if (adapter->link_duplex == FULL_DUPLEX)
42			cmd->base.duplex = DUPLEX_FULL;
43		else
44			cmd->base.duplex = DUPLEX_HALF;
45	} else {
46		cmd->base.speed = SPEED_UNKNOWN;
47		cmd->base.duplex = DUPLEX_UNKNOWN;
48	}
49
50	cmd->base.autoneg = AUTONEG_ENABLE;
51
52	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
53						supported);
54	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
55						advertising);
56
57	return 0;
58}
59
60static int atl1e_set_link_ksettings(struct net_device *netdev,
61				    const struct ethtool_link_ksettings *cmd)
62{
63	struct atl1e_adapter *adapter = netdev_priv(netdev);
64	struct atl1e_hw *hw = &adapter->hw;
65	u32 advertising;
66
67	ethtool_convert_link_mode_to_legacy_u32(&advertising,
68						cmd->link_modes.advertising);
69
70	while (test_and_set_bit(__AT_RESETTING, &adapter->flags))
71		msleep(1);
72
73	if (cmd->base.autoneg == AUTONEG_ENABLE) {
74		u16 adv4, adv9;
75
76		if (advertising & ADVERTISE_1000_FULL) {
77			if (hw->nic_type == athr_l1e) {
78				hw->autoneg_advertised =
79					advertising & AT_ADV_MASK;
80			} else {
81				clear_bit(__AT_RESETTING, &adapter->flags);
82				return -EINVAL;
83			}
84		} else if (advertising & ADVERTISE_1000_HALF) {
85			clear_bit(__AT_RESETTING, &adapter->flags);
86			return -EINVAL;
87		} else {
88			hw->autoneg_advertised =
89				advertising & AT_ADV_MASK;
90		}
91		advertising = hw->autoneg_advertised |
92				    ADVERTISED_TP | ADVERTISED_Autoneg;
93
94		adv4 = hw->mii_autoneg_adv_reg & ~ADVERTISE_ALL;
95		adv9 = hw->mii_1000t_ctrl_reg & ~MII_AT001_CR_1000T_SPEED_MASK;
96		if (hw->autoneg_advertised & ADVERTISE_10_HALF)
97			adv4 |= ADVERTISE_10HALF;
98		if (hw->autoneg_advertised & ADVERTISE_10_FULL)
99			adv4 |= ADVERTISE_10FULL;
100		if (hw->autoneg_advertised & ADVERTISE_100_HALF)
101			adv4 |= ADVERTISE_100HALF;
102		if (hw->autoneg_advertised & ADVERTISE_100_FULL)
103			adv4 |= ADVERTISE_100FULL;
104		if (hw->autoneg_advertised & ADVERTISE_1000_FULL)
105			adv9 |= ADVERTISE_1000FULL;
106
107		if (adv4 != hw->mii_autoneg_adv_reg ||
108				adv9 != hw->mii_1000t_ctrl_reg) {
109			hw->mii_autoneg_adv_reg = adv4;
110			hw->mii_1000t_ctrl_reg = adv9;
111			hw->re_autoneg = true;
112		}
113
114	} else {
115		clear_bit(__AT_RESETTING, &adapter->flags);
116		return -EINVAL;
117	}
118
119	/* reset the link */
120
121	if (netif_running(adapter->netdev)) {
122		atl1e_down(adapter);
123		atl1e_up(adapter);
124	} else
125		atl1e_reset_hw(&adapter->hw);
126
127	clear_bit(__AT_RESETTING, &adapter->flags);
128	return 0;
129}
130
131static u32 atl1e_get_msglevel(struct net_device *netdev)
132{
133#ifdef DBG
134	return 1;
135#else
136	return 0;
137#endif
138}
139
140static int atl1e_get_regs_len(struct net_device *netdev)
141{
142	return AT_REGS_LEN * sizeof(u32);
143}
144
145static void atl1e_get_regs(struct net_device *netdev,
146			   struct ethtool_regs *regs, void *p)
147{
148	struct atl1e_adapter *adapter = netdev_priv(netdev);
149	struct atl1e_hw *hw = &adapter->hw;
150	u32 *regs_buff = p;
151	u16 phy_data;
152
153	memset(p, 0, AT_REGS_LEN * sizeof(u32));
154
155	regs->version = (1 << 24) | (hw->revision_id << 16) | hw->device_id;
156
157	regs_buff[0]  = AT_READ_REG(hw, REG_VPD_CAP);
158	regs_buff[1]  = AT_READ_REG(hw, REG_SPI_FLASH_CTRL);
159	regs_buff[2]  = AT_READ_REG(hw, REG_SPI_FLASH_CONFIG);
160	regs_buff[3]  = AT_READ_REG(hw, REG_TWSI_CTRL);
161	regs_buff[4]  = AT_READ_REG(hw, REG_PCIE_DEV_MISC_CTRL);
162	regs_buff[5]  = AT_READ_REG(hw, REG_MASTER_CTRL);
163	regs_buff[6]  = AT_READ_REG(hw, REG_MANUAL_TIMER_INIT);
164	regs_buff[7]  = AT_READ_REG(hw, REG_IRQ_MODU_TIMER_INIT);
165	regs_buff[8]  = AT_READ_REG(hw, REG_GPHY_CTRL);
166	regs_buff[9]  = AT_READ_REG(hw, REG_CMBDISDMA_TIMER);
167	regs_buff[10] = AT_READ_REG(hw, REG_IDLE_STATUS);
168	regs_buff[11] = AT_READ_REG(hw, REG_MDIO_CTRL);
169	regs_buff[12] = AT_READ_REG(hw, REG_SERDES_LOCK);
170	regs_buff[13] = AT_READ_REG(hw, REG_MAC_CTRL);
171	regs_buff[14] = AT_READ_REG(hw, REG_MAC_IPG_IFG);
172	regs_buff[15] = AT_READ_REG(hw, REG_MAC_STA_ADDR);
173	regs_buff[16] = AT_READ_REG(hw, REG_MAC_STA_ADDR+4);
174	regs_buff[17] = AT_READ_REG(hw, REG_RX_HASH_TABLE);
175	regs_buff[18] = AT_READ_REG(hw, REG_RX_HASH_TABLE+4);
176	regs_buff[19] = AT_READ_REG(hw, REG_MAC_HALF_DUPLX_CTRL);
177	regs_buff[20] = AT_READ_REG(hw, REG_MTU);
178	regs_buff[21] = AT_READ_REG(hw, REG_WOL_CTRL);
179	regs_buff[22] = AT_READ_REG(hw, REG_SRAM_TRD_ADDR);
180	regs_buff[23] = AT_READ_REG(hw, REG_SRAM_TRD_LEN);
181	regs_buff[24] = AT_READ_REG(hw, REG_SRAM_RXF_ADDR);
182	regs_buff[25] = AT_READ_REG(hw, REG_SRAM_RXF_LEN);
183	regs_buff[26] = AT_READ_REG(hw, REG_SRAM_TXF_ADDR);
184	regs_buff[27] = AT_READ_REG(hw, REG_SRAM_TXF_LEN);
185	regs_buff[28] = AT_READ_REG(hw, REG_SRAM_TCPH_ADDR);
186	regs_buff[29] = AT_READ_REG(hw, REG_SRAM_PKTH_ADDR);
187
188	atl1e_read_phy_reg(hw, MII_BMCR, &phy_data);
189	regs_buff[73] = (u32)phy_data;
190	atl1e_read_phy_reg(hw, MII_BMSR, &phy_data);
191	regs_buff[74] = (u32)phy_data;
192}
193
194static int atl1e_get_eeprom_len(struct net_device *netdev)
195{
196	struct atl1e_adapter *adapter = netdev_priv(netdev);
197
198	if (!atl1e_check_eeprom_exist(&adapter->hw))
199		return AT_EEPROM_LEN;
200	else
201		return 0;
202}
203
204static int atl1e_get_eeprom(struct net_device *netdev,
205		struct ethtool_eeprom *eeprom, u8 *bytes)
206{
207	struct atl1e_adapter *adapter = netdev_priv(netdev);
208	struct atl1e_hw *hw = &adapter->hw;
209	u32 *eeprom_buff;
210	int first_dword, last_dword;
211	int ret_val = 0;
212	int i;
213
214	if (eeprom->len == 0)
215		return -EINVAL;
216
217	if (atl1e_check_eeprom_exist(hw)) /* not exist */
218		return -EINVAL;
219
220	eeprom->magic = hw->vendor_id | (hw->device_id << 16);
221
222	first_dword = eeprom->offset >> 2;
223	last_dword = (eeprom->offset + eeprom->len - 1) >> 2;
224
225	eeprom_buff = kmalloc_array(last_dword - first_dword + 1, sizeof(u32),
226				    GFP_KERNEL);
227	if (eeprom_buff == NULL)
228		return -ENOMEM;
229
230	for (i = first_dword; i < last_dword; i++) {
231		if (!atl1e_read_eeprom(hw, i * 4, &(eeprom_buff[i-first_dword]))) {
232			kfree(eeprom_buff);
233			return -EIO;
234		}
235	}
236
237	memcpy(bytes, (u8 *)eeprom_buff + (eeprom->offset & 3),
238			eeprom->len);
239	kfree(eeprom_buff);
240
241	return ret_val;
242}
243
244static int atl1e_set_eeprom(struct net_device *netdev,
245			    struct ethtool_eeprom *eeprom, u8 *bytes)
246{
247	struct atl1e_adapter *adapter = netdev_priv(netdev);
248	struct atl1e_hw *hw = &adapter->hw;
249	u32 *eeprom_buff;
250	u32 *ptr;
251	int first_dword, last_dword;
252	int ret_val = 0;
253	int i;
254
255	if (eeprom->len == 0)
256		return -EOPNOTSUPP;
257
258	if (eeprom->magic != (hw->vendor_id | (hw->device_id << 16)))
259		return -EINVAL;
260
261	first_dword = eeprom->offset >> 2;
262	last_dword = (eeprom->offset + eeprom->len - 1) >> 2;
263	eeprom_buff = kmalloc(AT_EEPROM_LEN, GFP_KERNEL);
264	if (eeprom_buff == NULL)
265		return -ENOMEM;
266
267	ptr = eeprom_buff;
268
269	if (eeprom->offset & 3) {
270		/* need read/modify/write of first changed EEPROM word */
271		/* only the second byte of the word is being modified */
272		if (!atl1e_read_eeprom(hw, first_dword * 4, &(eeprom_buff[0]))) {
273			ret_val = -EIO;
274			goto out;
275		}
276		ptr++;
277	}
278	if (((eeprom->offset + eeprom->len) & 3)) {
279		/* need read/modify/write of last changed EEPROM word */
280		/* only the first byte of the word is being modified */
281
282		if (!atl1e_read_eeprom(hw, last_dword * 4,
283				&(eeprom_buff[last_dword - first_dword]))) {
284			ret_val = -EIO;
285			goto out;
286		}
287	}
288
289	/* Device's eeprom is always little-endian, word addressable */
290	memcpy(ptr, bytes, eeprom->len);
291
292	for (i = 0; i < last_dword - first_dword + 1; i++) {
293		if (!atl1e_write_eeprom(hw, ((first_dword + i) * 4),
294				  eeprom_buff[i])) {
295			ret_val = -EIO;
296			goto out;
297		}
298	}
299out:
300	kfree(eeprom_buff);
301	return ret_val;
302}
303
304static void atl1e_get_drvinfo(struct net_device *netdev,
305		struct ethtool_drvinfo *drvinfo)
306{
307	struct atl1e_adapter *adapter = netdev_priv(netdev);
308
309	strlcpy(drvinfo->driver,  atl1e_driver_name, sizeof(drvinfo->driver));
310	strlcpy(drvinfo->fw_version, "L1e", sizeof(drvinfo->fw_version));
311	strlcpy(drvinfo->bus_info, pci_name(adapter->pdev),
312		sizeof(drvinfo->bus_info));
313}
314
315static void atl1e_get_wol(struct net_device *netdev,
316			  struct ethtool_wolinfo *wol)
317{
318	struct atl1e_adapter *adapter = netdev_priv(netdev);
319
320	wol->supported = WAKE_MAGIC | WAKE_PHY;
321	wol->wolopts = 0;
322
323	if (adapter->wol & AT_WUFC_EX)
324		wol->wolopts |= WAKE_UCAST;
325	if (adapter->wol & AT_WUFC_MC)
326		wol->wolopts |= WAKE_MCAST;
327	if (adapter->wol & AT_WUFC_BC)
328		wol->wolopts |= WAKE_BCAST;
329	if (adapter->wol & AT_WUFC_MAG)
330		wol->wolopts |= WAKE_MAGIC;
331	if (adapter->wol & AT_WUFC_LNKC)
332		wol->wolopts |= WAKE_PHY;
333}
334
335static int atl1e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
336{
337	struct atl1e_adapter *adapter = netdev_priv(netdev);
338
339	if (wol->wolopts & (WAKE_ARP | WAKE_MAGICSECURE |
340			    WAKE_UCAST | WAKE_MCAST | WAKE_BCAST))
341		return -EOPNOTSUPP;
342	/* these settings will always override what we currently have */
343	adapter->wol = 0;
344
345	if (wol->wolopts & WAKE_MAGIC)
346		adapter->wol |= AT_WUFC_MAG;
347	if (wol->wolopts & WAKE_PHY)
348		adapter->wol |= AT_WUFC_LNKC;
349
350	device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
351
352	return 0;
353}
354
355static int atl1e_nway_reset(struct net_device *netdev)
356{
357	struct atl1e_adapter *adapter = netdev_priv(netdev);
358	if (netif_running(netdev))
359		atl1e_reinit_locked(adapter);
360	return 0;
361}
362
363static const struct ethtool_ops atl1e_ethtool_ops = {
364	.get_drvinfo            = atl1e_get_drvinfo,
365	.get_regs_len           = atl1e_get_regs_len,
366	.get_regs               = atl1e_get_regs,
367	.get_wol                = atl1e_get_wol,
368	.set_wol                = atl1e_set_wol,
369	.get_msglevel           = atl1e_get_msglevel,
370	.nway_reset             = atl1e_nway_reset,
371	.get_link               = ethtool_op_get_link,
372	.get_eeprom_len         = atl1e_get_eeprom_len,
373	.get_eeprom             = atl1e_get_eeprom,
374	.set_eeprom             = atl1e_set_eeprom,
375	.get_link_ksettings     = atl1e_get_link_ksettings,
376	.set_link_ksettings     = atl1e_set_link_ksettings,
377};
378
379void atl1e_set_ethtool_ops(struct net_device *netdev)
380{
381	netdev->ethtool_ops = &atl1e_ethtool_ops;
382}
383