ucc_geth_ethtool.c

  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
108	return phylink_ethtool_ksettings_get(ugeth->phylink, cmd);
109}
110
111static int
112uec_set_ksettings(struct net_device *netdev,
113		  const struct ethtool_link_ksettings *cmd)
114{
115	struct ucc_geth_private *ugeth = netdev_priv(netdev);
116
117	return phylink_ethtool_ksettings_set(ugeth->phylink, cmd);
118}
119
120static void
121uec_get_pauseparam(struct net_device *netdev,
122                     struct ethtool_pauseparam *pause)
123{
124	struct ucc_geth_private *ugeth = netdev_priv(netdev);
125
126	return phylink_ethtool_get_pauseparam(ugeth->phylink, pause);
127}
128
129static int
130uec_set_pauseparam(struct net_device *netdev,
131                     struct ethtool_pauseparam *pause)
132{
133	struct ucc_geth_private *ugeth = netdev_priv(netdev);
134
135	ugeth->ug_info->receiveFlowControl = pause->rx_pause;
136	ugeth->ug_info->transmitFlowControl = pause->tx_pause;
137
138	return phylink_ethtool_set_pauseparam(ugeth->phylink, pause);
139}
140
141static uint32_t
142uec_get_msglevel(struct net_device *netdev)
143{
144	struct ucc_geth_private *ugeth = netdev_priv(netdev);
145	return ugeth->msg_enable;
146}
147
148static void
149uec_set_msglevel(struct net_device *netdev, uint32_t data)
150{
151	struct ucc_geth_private *ugeth = netdev_priv(netdev);
152	ugeth->msg_enable = data;
153}
154
155static int
156uec_get_regs_len(struct net_device *netdev)
157{
158	return sizeof(struct ucc_geth);
159}
160
161static void
162uec_get_regs(struct net_device *netdev,
163               struct ethtool_regs *regs, void *p)
164{
165	int i;
166	struct ucc_geth_private *ugeth = netdev_priv(netdev);
167	u32 __iomem *ug_regs = (u32 __iomem *)ugeth->ug_regs;
168	u32 *buff = p;
169
170	for (i = 0; i < sizeof(struct ucc_geth) / sizeof(u32); i++)
171		buff[i] = in_be32(&ug_regs[i]);
172}
173
174static void
175uec_get_ringparam(struct net_device *netdev,
176		  struct ethtool_ringparam *ring,
177		  struct kernel_ethtool_ringparam *kernel_ring,
178		  struct netlink_ext_ack *extack)
179{
180	struct ucc_geth_private *ugeth = netdev_priv(netdev);
181	struct ucc_geth_info *ug_info = ugeth->ug_info;
182	int queue = 0;
183
184	ring->rx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
185	ring->rx_mini_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
186	ring->rx_jumbo_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
187	ring->tx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
188
189	ring->rx_pending = ug_info->bdRingLenRx[queue];
190	ring->rx_mini_pending = ug_info->bdRingLenRx[queue];
191	ring->rx_jumbo_pending = ug_info->bdRingLenRx[queue];
192	ring->tx_pending = ug_info->bdRingLenTx[queue];
193}
194
195static int
196uec_set_ringparam(struct net_device *netdev,
197		  struct ethtool_ringparam *ring,
198		  struct kernel_ethtool_ringparam *kernel_ring,
199		  struct netlink_ext_ack *extack)
200{
201	struct ucc_geth_private *ugeth = netdev_priv(netdev);
202	struct ucc_geth_info *ug_info = ugeth->ug_info;
203	int queue = 0, ret = 0;
204
205	if (ring->rx_pending < UCC_GETH_RX_BD_RING_SIZE_MIN) {
206		netdev_info(netdev, "RxBD ring size must be no smaller than %d\n",
207			    UCC_GETH_RX_BD_RING_SIZE_MIN);
208		return -EINVAL;
209	}
210	if (ring->rx_pending % UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT) {
211		netdev_info(netdev, "RxBD ring size must be multiple of %d\n",
212			    UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT);
213		return -EINVAL;
214	}
215	if (ring->tx_pending < UCC_GETH_TX_BD_RING_SIZE_MIN) {
216		netdev_info(netdev, "TxBD ring size must be no smaller than %d\n",
217			    UCC_GETH_TX_BD_RING_SIZE_MIN);
218		return -EINVAL;
219	}
220
221	if (netif_running(netdev))
222		return -EBUSY;
223
224	ug_info->bdRingLenRx[queue] = ring->rx_pending;
225	ug_info->bdRingLenTx[queue] = ring->tx_pending;
226
227	return ret;
228}
229
230static int uec_get_sset_count(struct net_device *netdev, int sset)
231{
232	struct ucc_geth_private *ugeth = netdev_priv(netdev);
233	u32 stats_mode = ugeth->ug_info->statisticsMode;
234	int len = 0;
235
236	switch (sset) {
237	case ETH_SS_STATS:
238		if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
239			len += UEC_HW_STATS_LEN;
240		if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
241			len += UEC_TX_FW_STATS_LEN;
242		if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
243			len += UEC_RX_FW_STATS_LEN;
244
245		return len;
246
247	default:
248		return -EOPNOTSUPP;
249	}
250}
251
252static void uec_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
253{
254	struct ucc_geth_private *ugeth = netdev_priv(netdev);
255	u32 stats_mode = ugeth->ug_info->statisticsMode;
256	int i;
257
258	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
259		for (i = 0; i < UEC_HW_STATS_LEN; i++)
260			ethtool_puts(&buf, hw_stat_gstrings[i]);
261	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
262		for (i = 0; i < UEC_TX_FW_STATS_LEN; i++)
263			ethtool_puts(&buf, tx_fw_stat_gstrings[i]);
264	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
265		for (i = 0; i < UEC_RX_FW_STATS_LEN; i++)
266			ethtool_puts(&buf, rx_fw_stat_gstrings[i]);
267}
268
269static void uec_get_ethtool_stats(struct net_device *netdev,
270		struct ethtool_stats *stats, uint64_t *data)
271{
272	struct ucc_geth_private *ugeth = netdev_priv(netdev);
273	u32 stats_mode = ugeth->ug_info->statisticsMode;
274	u32 __iomem *base;
275	int i, j = 0;
276
277	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
278		if (ugeth->ug_regs)
279			base = (u32 __iomem *)&ugeth->ug_regs->tx64;
280		else
281			base = NULL;
282
283		for (i = 0; i < UEC_HW_STATS_LEN; i++)
284			data[j++] = base ? in_be32(&base[i]) : 0;
285	}
286	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
287		base = (u32 __iomem *)ugeth->p_tx_fw_statistics_pram;
288		for (i = 0; i < UEC_TX_FW_STATS_LEN; i++)
289			data[j++] = base ? in_be32(&base[i]) : 0;
290	}
291	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX) {
292		base = (u32 __iomem *)ugeth->p_rx_fw_statistics_pram;
293		for (i = 0; i < UEC_RX_FW_STATS_LEN; i++)
294			data[j++] = base ? in_be32(&base[i]) : 0;
295	}
296}
297
298/* Report driver information */
299static void
300uec_get_drvinfo(struct net_device *netdev,
301                       struct ethtool_drvinfo *drvinfo)
302{
303	strscpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
304	strscpy(drvinfo->bus_info, "QUICC ENGINE", sizeof(drvinfo->bus_info));
305}
306
307#ifdef CONFIG_PM
308
309static void uec_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
310{
311	struct ucc_geth_private *ugeth = netdev_priv(netdev);
312
313	phylink_ethtool_get_wol(ugeth->phylink, wol);
314
315	if (qe_alive_during_sleep())
316		wol->supported |= WAKE_MAGIC;
317
318	wol->wolopts |= ugeth->wol_en;
319}
320
321static int uec_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
322{
323	struct ucc_geth_private *ugeth = netdev_priv(netdev);
324	int ret = 0;
325
326	ret = phylink_ethtool_set_wol(ugeth->phylink, wol);
327	if (ret == -EOPNOTSUPP) {
328		ugeth->phy_wol_en = 0;
329	} else if (ret) {
330		return ret;
331	} else {
332		ugeth->phy_wol_en = wol->wolopts;
333		goto out;
334	}
335
336	/* If the PHY isn't handling the WoL and the MAC is asked to more than
337	 * WAKE_MAGIC, error-out
338	 */
339	if (!ugeth->phy_wol_en &&
340	    wol->wolopts & ~WAKE_MAGIC)
341		return -EINVAL;
342
343	if (wol->wolopts & WAKE_MAGIC &&
344	    !qe_alive_during_sleep())
345		return -EINVAL;
346
347out:
348	ugeth->wol_en = wol->wolopts;
349	device_set_wakeup_enable(&netdev->dev, ugeth->wol_en);
350
351	return 0;
352}
353
354#else
355#define uec_get_wol NULL
356#define uec_set_wol NULL
357#endif /* CONFIG_PM */
358
359static const struct ethtool_ops uec_ethtool_ops = {
360	.get_drvinfo            = uec_get_drvinfo,
361	.get_regs_len           = uec_get_regs_len,
362	.get_regs               = uec_get_regs,
363	.get_msglevel           = uec_get_msglevel,
364	.set_msglevel           = uec_set_msglevel,
365	.nway_reset             = phy_ethtool_nway_reset,
366	.get_link               = ethtool_op_get_link,
367	.get_ringparam          = uec_get_ringparam,
368	.set_ringparam          = uec_set_ringparam,
369	.get_pauseparam         = uec_get_pauseparam,
370	.set_pauseparam         = uec_set_pauseparam,
371	.get_sset_count		= uec_get_sset_count,
372	.get_strings            = uec_get_strings,
373	.get_ethtool_stats      = uec_get_ethtool_stats,
374	.get_wol		= uec_get_wol,
375	.set_wol		= uec_set_wol,
376	.get_ts_info		= ethtool_op_get_ts_info,
377	.get_link_ksettings	= uec_get_ksettings,
378	.set_link_ksettings	= uec_set_ksettings,
379};
380
381void uec_set_ethtool_ops(struct net_device *netdev)
382{
383	netdev->ethtool_ops = &uec_ethtool_ops;
384}