1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) 2007 Freescale Semiconductor, Inc. All rights reserved.
4 *
5 * Description: QE UCC Gigabit Ethernet Ethtool API Set
6 *
7 * Author: Li Yang <leoli@freescale.com>
8 *
9 * Limitation:
10 * Can only get/set settings of the first queue.
11 * Need to re-open the interface manually after changing some parameters.
12 */
13
14#include <linux/kernel.h>
15#include <linux/errno.h>
16#include <linux/stddef.h>
17#include <linux/interrupt.h>
18#include <linux/netdevice.h>
19#include <linux/etherdevice.h>
20#include <linux/skbuff.h>
21#include <linux/spinlock.h>
22#include <linux/mm.h>
23#include <linux/delay.h>
24#include <linux/dma-mapping.h>
25#include <linux/ethtool.h>
26#include <linux/mii.h>
27#include <linux/phy.h>
28
29#include <asm/io.h>
30#include <asm/irq.h>
31#include <linux/uaccess.h>
32#include <asm/types.h>
33
34#include "ucc_geth.h"
35
36static const char hw_stat_gstrings[][ETH_GSTRING_LEN] = {
37	"tx-64-frames",
38	"tx-65-127-frames",
39	"tx-128-255-frames",
40	"rx-64-frames",
41	"rx-65-127-frames",
42	"rx-128-255-frames",
43	"tx-bytes-ok",
44	"tx-pause-frames",
45	"tx-multicast-frames",
46	"tx-broadcast-frames",
47	"rx-frames",
48	"rx-bytes-ok",
49	"rx-bytes-all",
50	"rx-multicast-frames",
51	"rx-broadcast-frames",
52	"stats-counter-carry",
53	"stats-counter-mask",
54	"rx-dropped-frames",
55};
56
57static const char tx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
58	"tx-single-collision",
59	"tx-multiple-collision",
60	"tx-late-collision",
61	"tx-aborted-frames",
62	"tx-lost-frames",
63	"tx-carrier-sense-errors",
64	"tx-frames-ok",
65	"tx-excessive-differ-frames",
66	"tx-256-511-frames",
67	"tx-512-1023-frames",
68	"tx-1024-1518-frames",
69	"tx-jumbo-frames",
70};
71
72static const char rx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
73	"rx-crc-errors",
74	"rx-alignment-errors",
75	"rx-in-range-length-errors",
76	"rx-out-of-range-length-errors",
77	"rx-too-long-frames",
78	"rx-runt",
79	"rx-very-long-event",
80	"rx-symbol-errors",
81	"rx-busy-drop-frames",
82	"reserved",
83	"reserved",
84	"rx-mismatch-drop-frames",
85	"rx-small-than-64",
86	"rx-256-511-frames",
87	"rx-512-1023-frames",
88	"rx-1024-1518-frames",
89	"rx-jumbo-frames",
90	"rx-mac-error-loss",
91	"rx-pause-frames",
92	"reserved",
93	"rx-vlan-removed",
94	"rx-vlan-replaced",
95	"rx-vlan-inserted",
96	"rx-ip-checksum-errors",
97};
98
99#define UEC_HW_STATS_LEN ARRAY_SIZE(hw_stat_gstrings)
100#define UEC_TX_FW_STATS_LEN ARRAY_SIZE(tx_fw_stat_gstrings)
101#define UEC_RX_FW_STATS_LEN ARRAY_SIZE(rx_fw_stat_gstrings)
102
103static int
104uec_get_ksettings(struct net_device *netdev, struct ethtool_link_ksettings *cmd)
105{
106	struct ucc_geth_private *ugeth = netdev_priv(netdev);
107	struct phy_device *phydev = ugeth->phydev;
108
109	if (!phydev)
110		return -ENODEV;
111
112	phy_ethtool_ksettings_get(phydev, cmd);
113
114	return 0;
115}
116
117static int
118uec_set_ksettings(struct net_device *netdev,
119		  const struct ethtool_link_ksettings *cmd)
120{
121	struct ucc_geth_private *ugeth = netdev_priv(netdev);
122	struct phy_device *phydev = ugeth->phydev;
123
124	if (!phydev)
125		return -ENODEV;
126
127	return phy_ethtool_ksettings_set(phydev, cmd);
128}
129
130static void
131uec_get_pauseparam(struct net_device *netdev,
132                     struct ethtool_pauseparam *pause)
133{
134	struct ucc_geth_private *ugeth = netdev_priv(netdev);
135
136	pause->autoneg = ugeth->phydev->autoneg;
137
138	if (ugeth->ug_info->receiveFlowControl)
139		pause->rx_pause = 1;
140	if (ugeth->ug_info->transmitFlowControl)
141		pause->tx_pause = 1;
142}
143
144static int
145uec_set_pauseparam(struct net_device *netdev,
146                     struct ethtool_pauseparam *pause)
147{
148	struct ucc_geth_private *ugeth = netdev_priv(netdev);
149	int ret = 0;
150
151	ugeth->ug_info->receiveFlowControl = pause->rx_pause;
152	ugeth->ug_info->transmitFlowControl = pause->tx_pause;
153
154	if (ugeth->phydev->autoneg) {
155		if (netif_running(netdev)) {
156			/* FIXME: automatically restart */
157			netdev_info(netdev, "Please re-open the interface\n");
158		}
159	} else {
160		struct ucc_geth_info *ug_info = ugeth->ug_info;
161
162		ret = init_flow_control_params(ug_info->aufc,
163					ug_info->receiveFlowControl,
164					ug_info->transmitFlowControl,
165					ug_info->pausePeriod,
166					ug_info->extensionField,
167					&ugeth->uccf->uf_regs->upsmr,
168					&ugeth->ug_regs->uempr,
169					&ugeth->ug_regs->maccfg1);
170	}
171
172	return ret;
173}
174
175static uint32_t
176uec_get_msglevel(struct net_device *netdev)
177{
178	struct ucc_geth_private *ugeth = netdev_priv(netdev);
179	return ugeth->msg_enable;
180}
181
182static void
183uec_set_msglevel(struct net_device *netdev, uint32_t data)
184{
185	struct ucc_geth_private *ugeth = netdev_priv(netdev);
186	ugeth->msg_enable = data;
187}
188
189static int
190uec_get_regs_len(struct net_device *netdev)
191{
192	return sizeof(struct ucc_geth);
193}
194
195static void
196uec_get_regs(struct net_device *netdev,
197               struct ethtool_regs *regs, void *p)
198{
199	int i;
200	struct ucc_geth_private *ugeth = netdev_priv(netdev);
201	u32 __iomem *ug_regs = (u32 __iomem *)ugeth->ug_regs;
202	u32 *buff = p;
203
204	for (i = 0; i < sizeof(struct ucc_geth) / sizeof(u32); i++)
205		buff[i] = in_be32(&ug_regs[i]);
206}
207
208static void
209uec_get_ringparam(struct net_device *netdev,
210		  struct ethtool_ringparam *ring,
211		  struct kernel_ethtool_ringparam *kernel_ring,
212		  struct netlink_ext_ack *extack)
213{
214	struct ucc_geth_private *ugeth = netdev_priv(netdev);
215	struct ucc_geth_info *ug_info = ugeth->ug_info;
216	int queue = 0;
217
218	ring->rx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
219	ring->rx_mini_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
220	ring->rx_jumbo_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
221	ring->tx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
222
223	ring->rx_pending = ug_info->bdRingLenRx[queue];
224	ring->rx_mini_pending = ug_info->bdRingLenRx[queue];
225	ring->rx_jumbo_pending = ug_info->bdRingLenRx[queue];
226	ring->tx_pending = ug_info->bdRingLenTx[queue];
227}
228
229static int
230uec_set_ringparam(struct net_device *netdev,
231		  struct ethtool_ringparam *ring,
232		  struct kernel_ethtool_ringparam *kernel_ring,
233		  struct netlink_ext_ack *extack)
234{
235	struct ucc_geth_private *ugeth = netdev_priv(netdev);
236	struct ucc_geth_info *ug_info = ugeth->ug_info;
237	int queue = 0, ret = 0;
238
239	if (ring->rx_pending < UCC_GETH_RX_BD_RING_SIZE_MIN) {
240		netdev_info(netdev, "RxBD ring size must be no smaller than %d\n",
241			    UCC_GETH_RX_BD_RING_SIZE_MIN);
242		return -EINVAL;
243	}
244	if (ring->rx_pending % UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT) {
245		netdev_info(netdev, "RxBD ring size must be multiple of %d\n",
246			    UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT);
247		return -EINVAL;
248	}
249	if (ring->tx_pending < UCC_GETH_TX_BD_RING_SIZE_MIN) {
250		netdev_info(netdev, "TxBD ring size must be no smaller than %d\n",
251			    UCC_GETH_TX_BD_RING_SIZE_MIN);
252		return -EINVAL;
253	}
254
255	if (netif_running(netdev))
256		return -EBUSY;
257
258	ug_info->bdRingLenRx[queue] = ring->rx_pending;
259	ug_info->bdRingLenTx[queue] = ring->tx_pending;
260
261	return ret;
262}
263
264static int uec_get_sset_count(struct net_device *netdev, int sset)
265{
266	struct ucc_geth_private *ugeth = netdev_priv(netdev);
267	u32 stats_mode = ugeth->ug_info->statisticsMode;
268	int len = 0;
269
270	switch (sset) {
271	case ETH_SS_STATS:
272		if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
273			len += UEC_HW_STATS_LEN;
274		if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
275			len += UEC_TX_FW_STATS_LEN;
276		if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
277			len += UEC_RX_FW_STATS_LEN;
278
279		return len;
280
281	default:
282		return -EOPNOTSUPP;
283	}
284}
285
286static void uec_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
287{
288	struct ucc_geth_private *ugeth = netdev_priv(netdev);
289	u32 stats_mode = ugeth->ug_info->statisticsMode;
290
291	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
292		memcpy(buf, hw_stat_gstrings, UEC_HW_STATS_LEN *
293			       	ETH_GSTRING_LEN);
294		buf += UEC_HW_STATS_LEN * ETH_GSTRING_LEN;
295	}
296	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
297		memcpy(buf, tx_fw_stat_gstrings, UEC_TX_FW_STATS_LEN *
298			       	ETH_GSTRING_LEN);
299		buf += UEC_TX_FW_STATS_LEN * ETH_GSTRING_LEN;
300	}
301	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
302		memcpy(buf, rx_fw_stat_gstrings, UEC_RX_FW_STATS_LEN *
303			       	ETH_GSTRING_LEN);
304}
305
306static void uec_get_ethtool_stats(struct net_device *netdev,
307		struct ethtool_stats *stats, uint64_t *data)
308{
309	struct ucc_geth_private *ugeth = netdev_priv(netdev);
310	u32 stats_mode = ugeth->ug_info->statisticsMode;
311	u32 __iomem *base;
312	int i, j = 0;
313
314	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
315		if (ugeth->ug_regs)
316			base = (u32 __iomem *)&ugeth->ug_regs->tx64;
317		else
318			base = NULL;
319
320		for (i = 0; i < UEC_HW_STATS_LEN; i++)
321			data[j++] = base ? in_be32(&base[i]) : 0;
322	}
323	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
324		base = (u32 __iomem *)ugeth->p_tx_fw_statistics_pram;
325		for (i = 0; i < UEC_TX_FW_STATS_LEN; i++)
326			data[j++] = base ? in_be32(&base[i]) : 0;
327	}
328	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX) {
329		base = (u32 __iomem *)ugeth->p_rx_fw_statistics_pram;
330		for (i = 0; i < UEC_RX_FW_STATS_LEN; i++)
331			data[j++] = base ? in_be32(&base[i]) : 0;
332	}
333}
334
335/* Report driver information */
336static void
337uec_get_drvinfo(struct net_device *netdev,
338                       struct ethtool_drvinfo *drvinfo)
339{
340	strscpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
341	strscpy(drvinfo->bus_info, "QUICC ENGINE", sizeof(drvinfo->bus_info));
342}
343
344#ifdef CONFIG_PM
345
346static void uec_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
347{
348	struct ucc_geth_private *ugeth = netdev_priv(netdev);
349	struct phy_device *phydev = ugeth->phydev;
350
351	if (phydev && phydev->irq)
352		wol->supported |= WAKE_PHY;
353	if (qe_alive_during_sleep())
354		wol->supported |= WAKE_MAGIC;
355
356	wol->wolopts = ugeth->wol_en;
357}
358
359static int uec_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
360{
361	struct ucc_geth_private *ugeth = netdev_priv(netdev);
362	struct phy_device *phydev = ugeth->phydev;
363
364	if (wol->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
365		return -EINVAL;
366	else if (wol->wolopts & WAKE_PHY && (!phydev || !phydev->irq))
367		return -EINVAL;
368	else if (wol->wolopts & WAKE_MAGIC && !qe_alive_during_sleep())
369		return -EINVAL;
370
371	ugeth->wol_en = wol->wolopts;
372	device_set_wakeup_enable(&netdev->dev, ugeth->wol_en);
373
374	return 0;
375}
376
377#else
378#define uec_get_wol NULL
379#define uec_set_wol NULL
380#endif /* CONFIG_PM */
381
382static const struct ethtool_ops uec_ethtool_ops = {
383	.get_drvinfo            = uec_get_drvinfo,
384	.get_regs_len           = uec_get_regs_len,
385	.get_regs               = uec_get_regs,
386	.get_msglevel           = uec_get_msglevel,
387	.set_msglevel           = uec_set_msglevel,
388	.nway_reset             = phy_ethtool_nway_reset,
389	.get_link               = ethtool_op_get_link,
390	.get_ringparam          = uec_get_ringparam,
391	.set_ringparam          = uec_set_ringparam,
392	.get_pauseparam         = uec_get_pauseparam,
393	.set_pauseparam         = uec_set_pauseparam,
394	.get_sset_count		= uec_get_sset_count,
395	.get_strings            = uec_get_strings,
396	.get_ethtool_stats      = uec_get_ethtool_stats,
397	.get_wol		= uec_get_wol,
398	.set_wol		= uec_set_wol,
399	.get_ts_info		= ethtool_op_get_ts_info,
400	.get_link_ksettings	= uec_get_ksettings,
401	.set_link_ksettings	= uec_set_ksettings,
402};
403
404void uec_set_ethtool_ops(struct net_device *netdev)
405{
406	netdev->ethtool_ops = &uec_ethtool_ops;
407}
408