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
40 static 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
61 static 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
76 static 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
107 static int
uec_get_settings(struct net_device * netdev,struct ethtool_cmd * ecmd)108 uec_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
123 static int
uec_set_settings(struct net_device * netdev,struct ethtool_cmd * ecmd)124 uec_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
135 static void
uec_get_pauseparam(struct net_device * netdev,struct ethtool_pauseparam * pause)136 uec_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
149 static int
uec_set_pauseparam(struct net_device * netdev,struct ethtool_pauseparam * pause)150 uec_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
180 static uint32_t
uec_get_msglevel(struct net_device * netdev)181 uec_get_msglevel(struct net_device *netdev)
182 {
183 struct ucc_geth_private *ugeth = netdev_priv(netdev);
184 return ugeth->msg_enable;
185 }
186
187 static void
uec_set_msglevel(struct net_device * netdev,uint32_t data)188 uec_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
194 static int
uec_get_regs_len(struct net_device * netdev)195 uec_get_regs_len(struct net_device *netdev)
196 {
197 return sizeof(struct ucc_geth);
198 }
199
200 static void
uec_get_regs(struct net_device * netdev,struct ethtool_regs * regs,void * p)201 uec_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
213 static void
uec_get_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring)214 uec_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
232 static int
uec_set_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring)233 uec_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 if (netif_running(netdev))
257 return -EBUSY;
258
259 ug_info->bdRingLenRx[queue] = ring->rx_pending;
260 ug_info->bdRingLenTx[queue] = ring->tx_pending;
261
262 return ret;
263 }
264
uec_get_sset_count(struct net_device * netdev,int sset)265 static int uec_get_sset_count(struct net_device *netdev, int sset)
266 {
267 struct ucc_geth_private *ugeth = netdev_priv(netdev);
268 u32 stats_mode = ugeth->ug_info->statisticsMode;
269 int len = 0;
270
271 switch (sset) {
272 case ETH_SS_STATS:
273 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
274 len += UEC_HW_STATS_LEN;
275 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
276 len += UEC_TX_FW_STATS_LEN;
277 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
278 len += UEC_RX_FW_STATS_LEN;
279
280 return len;
281
282 default:
283 return -EOPNOTSUPP;
284 }
285 }
286
uec_get_strings(struct net_device * netdev,u32 stringset,u8 * buf)287 static void uec_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
288 {
289 struct ucc_geth_private *ugeth = netdev_priv(netdev);
290 u32 stats_mode = ugeth->ug_info->statisticsMode;
291
292 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
293 memcpy(buf, hw_stat_gstrings, UEC_HW_STATS_LEN *
294 ETH_GSTRING_LEN);
295 buf += UEC_HW_STATS_LEN * ETH_GSTRING_LEN;
296 }
297 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
298 memcpy(buf, tx_fw_stat_gstrings, UEC_TX_FW_STATS_LEN *
299 ETH_GSTRING_LEN);
300 buf += UEC_TX_FW_STATS_LEN * ETH_GSTRING_LEN;
301 }
302 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
303 memcpy(buf, rx_fw_stat_gstrings, UEC_RX_FW_STATS_LEN *
304 ETH_GSTRING_LEN);
305 }
306
uec_get_ethtool_stats(struct net_device * netdev,struct ethtool_stats * stats,uint64_t * data)307 static void uec_get_ethtool_stats(struct net_device *netdev,
308 struct ethtool_stats *stats, uint64_t *data)
309 {
310 struct ucc_geth_private *ugeth = netdev_priv(netdev);
311 u32 stats_mode = ugeth->ug_info->statisticsMode;
312 u32 __iomem *base;
313 int i, j = 0;
314
315 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
316 if (ugeth->ug_regs)
317 base = (u32 __iomem *)&ugeth->ug_regs->tx64;
318 else
319 base = NULL;
320
321 for (i = 0; i < UEC_HW_STATS_LEN; i++)
322 data[j++] = base ? in_be32(&base[i]) : 0;
323 }
324 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
325 base = (u32 __iomem *)ugeth->p_tx_fw_statistics_pram;
326 for (i = 0; i < UEC_TX_FW_STATS_LEN; i++)
327 data[j++] = base ? in_be32(&base[i]) : 0;
328 }
329 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX) {
330 base = (u32 __iomem *)ugeth->p_rx_fw_statistics_pram;
331 for (i = 0; i < UEC_RX_FW_STATS_LEN; i++)
332 data[j++] = base ? in_be32(&base[i]) : 0;
333 }
334 }
335
uec_nway_reset(struct net_device * netdev)336 static int uec_nway_reset(struct net_device *netdev)
337 {
338 struct ucc_geth_private *ugeth = netdev_priv(netdev);
339
340 return phy_start_aneg(ugeth->phydev);
341 }
342
343 /* Report driver information */
344 static void
uec_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * drvinfo)345 uec_get_drvinfo(struct net_device *netdev,
346 struct ethtool_drvinfo *drvinfo)
347 {
348 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
349 strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
350 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
351 strlcpy(drvinfo->bus_info, "QUICC ENGINE", sizeof(drvinfo->bus_info));
352 }
353
354 #ifdef CONFIG_PM
355
uec_get_wol(struct net_device * netdev,struct ethtool_wolinfo * wol)356 static void uec_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
357 {
358 struct ucc_geth_private *ugeth = netdev_priv(netdev);
359 struct phy_device *phydev = ugeth->phydev;
360
361 if (phydev && phydev->irq)
362 wol->supported |= WAKE_PHY;
363 if (qe_alive_during_sleep())
364 wol->supported |= WAKE_MAGIC;
365
366 wol->wolopts = ugeth->wol_en;
367 }
368
uec_set_wol(struct net_device * netdev,struct ethtool_wolinfo * wol)369 static int uec_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
370 {
371 struct ucc_geth_private *ugeth = netdev_priv(netdev);
372 struct phy_device *phydev = ugeth->phydev;
373
374 if (wol->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
375 return -EINVAL;
376 else if (wol->wolopts & WAKE_PHY && (!phydev || !phydev->irq))
377 return -EINVAL;
378 else if (wol->wolopts & WAKE_MAGIC && !qe_alive_during_sleep())
379 return -EINVAL;
380
381 ugeth->wol_en = wol->wolopts;
382 device_set_wakeup_enable(&netdev->dev, ugeth->wol_en);
383
384 return 0;
385 }
386
387 #else
388 #define uec_get_wol NULL
389 #define uec_set_wol NULL
390 #endif /* CONFIG_PM */
391
392 static const struct ethtool_ops uec_ethtool_ops = {
393 .get_settings = uec_get_settings,
394 .set_settings = uec_set_settings,
395 .get_drvinfo = uec_get_drvinfo,
396 .get_regs_len = uec_get_regs_len,
397 .get_regs = uec_get_regs,
398 .get_msglevel = uec_get_msglevel,
399 .set_msglevel = uec_set_msglevel,
400 .nway_reset = uec_nway_reset,
401 .get_link = ethtool_op_get_link,
402 .get_ringparam = uec_get_ringparam,
403 .set_ringparam = uec_set_ringparam,
404 .get_pauseparam = uec_get_pauseparam,
405 .set_pauseparam = uec_set_pauseparam,
406 .get_sset_count = uec_get_sset_count,
407 .get_strings = uec_get_strings,
408 .get_ethtool_stats = uec_get_ethtool_stats,
409 .get_wol = uec_get_wol,
410 .set_wol = uec_set_wol,
411 .get_ts_info = ethtool_op_get_ts_info,
412 };
413
uec_set_ethtool_ops(struct net_device * netdev)414 void uec_set_ethtool_ops(struct net_device *netdev)
415 {
416 netdev->ethtool_ops = &uec_ethtool_ops;
417 }
418