1/*
2 * Copyright (c) 2007 Freescale Semiconductor, Inc. All rights reserved.
3 *
4 * Description: QE UCC Gigabit Ethernet Ethtool API Set
5 *
6 * Author: Li Yang <leoli@freescale.com>
7 *
8 * Limitation:
9 * Can only get/set settings of the first queue.
10 * Need to re-open the interface manually after changing some parameters.
11 *
12 * This program is free software; you can redistribute  it and/or modify it
13 * under  the terms of  the GNU General  Public License as published by the
14 * Free Software Foundation;  either version 2 of the  License, or (at your
15 * option) any later version.
16 */
17
18#include <linux/kernel.h>
19#include <linux/errno.h>
20#include <linux/stddef.h>
21#include <linux/interrupt.h>
22#include <linux/netdevice.h>
23#include <linux/etherdevice.h>
24#include <linux/skbuff.h>
25#include <linux/spinlock.h>
26#include <linux/mm.h>
27#include <linux/delay.h>
28#include <linux/dma-mapping.h>
29#include <linux/ethtool.h>
30#include <linux/mii.h>
31#include <linux/phy.h>
32
33#include <asm/io.h>
34#include <asm/irq.h>
35#include <asm/uaccess.h>
36#include <asm/types.h>
37
38#include "ucc_geth.h"
39
40static const char hw_stat_gstrings[][ETH_GSTRING_LEN] = {
41	"tx-64-frames",
42	"tx-65-127-frames",
43	"tx-128-255-frames",
44	"rx-64-frames",
45	"rx-65-127-frames",
46	"rx-128-255-frames",
47	"tx-bytes-ok",
48	"tx-pause-frames",
49	"tx-multicast-frames",
50	"tx-broadcast-frames",
51	"rx-frames",
52	"rx-bytes-ok",
53	"rx-bytes-all",
54	"rx-multicast-frames",
55	"rx-broadcast-frames",
56	"stats-counter-carry",
57	"stats-counter-mask",
58	"rx-dropped-frames",
59};
60
61static const char tx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
62	"tx-single-collision",
63	"tx-multiple-collision",
64	"tx-late-collsion",
65	"tx-aborted-frames",
66	"tx-lost-frames",
67	"tx-carrier-sense-errors",
68	"tx-frames-ok",
69	"tx-excessive-differ-frames",
70	"tx-256-511-frames",
71	"tx-512-1023-frames",
72	"tx-1024-1518-frames",
73	"tx-jumbo-frames",
74};
75
76static const char rx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
77	"rx-crc-errors",
78	"rx-alignment-errors",
79	"rx-in-range-length-errors",
80	"rx-out-of-range-length-errors",
81	"rx-too-long-frames",
82	"rx-runt",
83	"rx-very-long-event",
84	"rx-symbol-errors",
85	"rx-busy-drop-frames",
86	"reserved",
87	"reserved",
88	"rx-mismatch-drop-frames",
89	"rx-small-than-64",
90	"rx-256-511-frames",
91	"rx-512-1023-frames",
92	"rx-1024-1518-frames",
93	"rx-jumbo-frames",
94	"rx-mac-error-loss",
95	"rx-pause-frames",
96	"reserved",
97	"rx-vlan-removed",
98	"rx-vlan-replaced",
99	"rx-vlan-inserted",
100	"rx-ip-checksum-errors",
101};
102
103#define UEC_HW_STATS_LEN ARRAY_SIZE(hw_stat_gstrings)
104#define UEC_TX_FW_STATS_LEN ARRAY_SIZE(tx_fw_stat_gstrings)
105#define UEC_RX_FW_STATS_LEN ARRAY_SIZE(rx_fw_stat_gstrings)
106
107static int
108uec_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
109{
110	struct ucc_geth_private *ugeth = netdev_priv(netdev);
111	struct phy_device *phydev = ugeth->phydev;
112	struct ucc_geth_info *ug_info = ugeth->ug_info;
113
114	if (!phydev)
115		return -ENODEV;
116
117	ecmd->maxtxpkt = 1;
118	ecmd->maxrxpkt = ug_info->interruptcoalescingmaxvalue[0];
119
120	return phy_ethtool_gset(phydev, ecmd);
121}
122
123static int
124uec_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
125{
126	struct ucc_geth_private *ugeth = netdev_priv(netdev);
127	struct phy_device *phydev = ugeth->phydev;
128
129	if (!phydev)
130		return -ENODEV;
131
132	return phy_ethtool_sset(phydev, ecmd);
133}
134
135static void
136uec_get_pauseparam(struct net_device *netdev,
137                     struct ethtool_pauseparam *pause)
138{
139	struct ucc_geth_private *ugeth = netdev_priv(netdev);
140
141	pause->autoneg = ugeth->phydev->autoneg;
142
143	if (ugeth->ug_info->receiveFlowControl)
144		pause->rx_pause = 1;
145	if (ugeth->ug_info->transmitFlowControl)
146		pause->tx_pause = 1;
147}
148
149static int
150uec_set_pauseparam(struct net_device *netdev,
151                     struct ethtool_pauseparam *pause)
152{
153	struct ucc_geth_private *ugeth = netdev_priv(netdev);
154	int ret = 0;
155
156	ugeth->ug_info->receiveFlowControl = pause->rx_pause;
157	ugeth->ug_info->transmitFlowControl = pause->tx_pause;
158
159	if (ugeth->phydev->autoneg) {
160		if (netif_running(netdev)) {
161			/* FIXME: automatically restart */
162			netdev_info(netdev, "Please re-open the interface\n");
163		}
164	} else {
165		struct ucc_geth_info *ug_info = ugeth->ug_info;
166
167		ret = init_flow_control_params(ug_info->aufc,
168					ug_info->receiveFlowControl,
169					ug_info->transmitFlowControl,
170					ug_info->pausePeriod,
171					ug_info->extensionField,
172					&ugeth->uccf->uf_regs->upsmr,
173					&ugeth->ug_regs->uempr,
174					&ugeth->ug_regs->maccfg1);
175	}
176
177	return ret;
178}
179
180static uint32_t
181uec_get_msglevel(struct net_device *netdev)
182{
183	struct ucc_geth_private *ugeth = netdev_priv(netdev);
184	return ugeth->msg_enable;
185}
186
187static void
188uec_set_msglevel(struct net_device *netdev, uint32_t data)
189{
190	struct ucc_geth_private *ugeth = netdev_priv(netdev);
191	ugeth->msg_enable = data;
192}
193
194static int
195uec_get_regs_len(struct net_device *netdev)
196{
197	return sizeof(struct ucc_geth);
198}
199
200static void
201uec_get_regs(struct net_device *netdev,
202               struct ethtool_regs *regs, void *p)
203{
204	int i;
205	struct ucc_geth_private *ugeth = netdev_priv(netdev);
206	u32 __iomem *ug_regs = (u32 __iomem *)ugeth->ug_regs;
207	u32 *buff = p;
208
209	for (i = 0; i < sizeof(struct ucc_geth) / sizeof(u32); i++)
210		buff[i] = in_be32(&ug_regs[i]);
211}
212
213static void
214uec_get_ringparam(struct net_device *netdev,
215                    struct ethtool_ringparam *ring)
216{
217	struct ucc_geth_private *ugeth = netdev_priv(netdev);
218	struct ucc_geth_info *ug_info = ugeth->ug_info;
219	int queue = 0;
220
221	ring->rx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
222	ring->rx_mini_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
223	ring->rx_jumbo_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
224	ring->tx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
225
226	ring->rx_pending = ug_info->bdRingLenRx[queue];
227	ring->rx_mini_pending = ug_info->bdRingLenRx[queue];
228	ring->rx_jumbo_pending = ug_info->bdRingLenRx[queue];
229	ring->tx_pending = ug_info->bdRingLenTx[queue];
230}
231
232static int
233uec_set_ringparam(struct net_device *netdev,
234                    struct ethtool_ringparam *ring)
235{
236	struct ucc_geth_private *ugeth = netdev_priv(netdev);
237	struct ucc_geth_info *ug_info = ugeth->ug_info;
238	int queue = 0, ret = 0;
239
240	if (ring->rx_pending < UCC_GETH_RX_BD_RING_SIZE_MIN) {
241		netdev_info(netdev, "RxBD ring size must be no smaller than %d\n",
242			    UCC_GETH_RX_BD_RING_SIZE_MIN);
243		return -EINVAL;
244	}
245	if (ring->rx_pending % UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT) {
246		netdev_info(netdev, "RxBD ring size must be multiple of %d\n",
247			    UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT);
248		return -EINVAL;
249	}
250	if (ring->tx_pending < UCC_GETH_TX_BD_RING_SIZE_MIN) {
251		netdev_info(netdev, "TxBD ring size must be no smaller than %d\n",
252			    UCC_GETH_TX_BD_RING_SIZE_MIN);
253		return -EINVAL;
254	}
255
256	ug_info->bdRingLenRx[queue] = ring->rx_pending;
257	ug_info->bdRingLenTx[queue] = ring->tx_pending;
258
259	if (netif_running(netdev)) {
260		/* FIXME: restart automatically */
261		netdev_info(netdev, "Please re-open the interface\n");
262	}
263
264	return ret;
265}
266
267static int uec_get_sset_count(struct net_device *netdev, int sset)
268{
269	struct ucc_geth_private *ugeth = netdev_priv(netdev);
270	u32 stats_mode = ugeth->ug_info->statisticsMode;
271	int len = 0;
272
273	switch (sset) {
274	case ETH_SS_STATS:
275		if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
276			len += UEC_HW_STATS_LEN;
277		if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
278			len += UEC_TX_FW_STATS_LEN;
279		if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
280			len += UEC_RX_FW_STATS_LEN;
281
282		return len;
283
284	default:
285		return -EOPNOTSUPP;
286	}
287}
288
289static void uec_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
290{
291	struct ucc_geth_private *ugeth = netdev_priv(netdev);
292	u32 stats_mode = ugeth->ug_info->statisticsMode;
293
294	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
295		memcpy(buf, hw_stat_gstrings, UEC_HW_STATS_LEN *
296			       	ETH_GSTRING_LEN);
297		buf += UEC_HW_STATS_LEN * ETH_GSTRING_LEN;
298	}
299	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
300		memcpy(buf, tx_fw_stat_gstrings, UEC_TX_FW_STATS_LEN *
301			       	ETH_GSTRING_LEN);
302		buf += UEC_TX_FW_STATS_LEN * ETH_GSTRING_LEN;
303	}
304	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
305		memcpy(buf, rx_fw_stat_gstrings, UEC_RX_FW_STATS_LEN *
306			       	ETH_GSTRING_LEN);
307}
308
309static void uec_get_ethtool_stats(struct net_device *netdev,
310		struct ethtool_stats *stats, uint64_t *data)
311{
312	struct ucc_geth_private *ugeth = netdev_priv(netdev);
313	u32 stats_mode = ugeth->ug_info->statisticsMode;
314	u32 __iomem *base;
315	int i, j = 0;
316
317	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
318		if (ugeth->ug_regs)
319			base = (u32 __iomem *)&ugeth->ug_regs->tx64;
320		else
321			base = NULL;
322
323		for (i = 0; i < UEC_HW_STATS_LEN; i++)
324			data[j++] = base ? in_be32(&base[i]) : 0;
325	}
326	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
327		base = (u32 __iomem *)ugeth->p_tx_fw_statistics_pram;
328		for (i = 0; i < UEC_TX_FW_STATS_LEN; i++)
329			data[j++] = base ? in_be32(&base[i]) : 0;
330	}
331	if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX) {
332		base = (u32 __iomem *)ugeth->p_rx_fw_statistics_pram;
333		for (i = 0; i < UEC_RX_FW_STATS_LEN; i++)
334			data[j++] = base ? in_be32(&base[i]) : 0;
335	}
336}
337
338static int uec_nway_reset(struct net_device *netdev)
339{
340	struct ucc_geth_private *ugeth = netdev_priv(netdev);
341
342	return phy_start_aneg(ugeth->phydev);
343}
344
345/* Report driver information */
346static void
347uec_get_drvinfo(struct net_device *netdev,
348                       struct ethtool_drvinfo *drvinfo)
349{
350	strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
351	strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
352	strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
353	strlcpy(drvinfo->bus_info, "QUICC ENGINE", sizeof(drvinfo->bus_info));
354}
355
356#ifdef CONFIG_PM
357
358static void uec_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
359{
360	struct ucc_geth_private *ugeth = netdev_priv(netdev);
361	struct phy_device *phydev = ugeth->phydev;
362
363	if (phydev && phydev->irq)
364		wol->supported |= WAKE_PHY;
365	if (qe_alive_during_sleep())
366		wol->supported |= WAKE_MAGIC;
367
368	wol->wolopts = ugeth->wol_en;
369}
370
371static int uec_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
372{
373	struct ucc_geth_private *ugeth = netdev_priv(netdev);
374	struct phy_device *phydev = ugeth->phydev;
375
376	if (wol->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
377		return -EINVAL;
378	else if (wol->wolopts & WAKE_PHY && (!phydev || !phydev->irq))
379		return -EINVAL;
380	else if (wol->wolopts & WAKE_MAGIC && !qe_alive_during_sleep())
381		return -EINVAL;
382
383	ugeth->wol_en = wol->wolopts;
384	device_set_wakeup_enable(&netdev->dev, ugeth->wol_en);
385
386	return 0;
387}
388
389#else
390#define uec_get_wol NULL
391#define uec_set_wol NULL
392#endif /* CONFIG_PM */
393
394static const struct ethtool_ops uec_ethtool_ops = {
395	.get_settings           = uec_get_settings,
396	.set_settings           = uec_set_settings,
397	.get_drvinfo            = uec_get_drvinfo,
398	.get_regs_len           = uec_get_regs_len,
399	.get_regs               = uec_get_regs,
400	.get_msglevel           = uec_get_msglevel,
401	.set_msglevel           = uec_set_msglevel,
402	.nway_reset             = uec_nway_reset,
403	.get_link               = ethtool_op_get_link,
404	.get_ringparam          = uec_get_ringparam,
405	.set_ringparam          = uec_set_ringparam,
406	.get_pauseparam         = uec_get_pauseparam,
407	.set_pauseparam         = uec_set_pauseparam,
408	.get_sset_count		= uec_get_sset_count,
409	.get_strings            = uec_get_strings,
410	.get_ethtool_stats      = uec_get_ethtool_stats,
411	.get_wol		= uec_get_wol,
412	.set_wol		= uec_set_wol,
413	.get_ts_info		= ethtool_op_get_ts_info,
414};
415
416void uec_set_ethtool_ops(struct net_device *netdev)
417{
418	netdev->ethtool_ops = &uec_ethtool_ops;
419}
420