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/init.h>
20 #include <linux/errno.h>
21 #include <linux/stddef.h>
22 #include <linux/interrupt.h>
23 #include <linux/netdevice.h>
24 #include <linux/etherdevice.h>
25 #include <linux/skbuff.h>
26 #include <linux/spinlock.h>
27 #include <linux/mm.h>
28 #include <linux/delay.h>
29 #include <linux/dma-mapping.h>
30 #include <linux/ethtool.h>
31 #include <linux/mii.h>
32 #include <linux/phy.h>
33
34 #include <asm/io.h>
35 #include <asm/irq.h>
36 #include <asm/uaccess.h>
37 #include <asm/types.h>
38
39 #include "ucc_geth.h"
40
41 static const char hw_stat_gstrings[][ETH_GSTRING_LEN] = {
42 "tx-64-frames",
43 "tx-65-127-frames",
44 "tx-128-255-frames",
45 "rx-64-frames",
46 "rx-65-127-frames",
47 "rx-128-255-frames",
48 "tx-bytes-ok",
49 "tx-pause-frames",
50 "tx-multicast-frames",
51 "tx-broadcast-frames",
52 "rx-frames",
53 "rx-bytes-ok",
54 "rx-bytes-all",
55 "rx-multicast-frames",
56 "rx-broadcast-frames",
57 "stats-counter-carry",
58 "stats-counter-mask",
59 "rx-dropped-frames",
60 };
61
62 static const char tx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
63 "tx-single-collision",
64 "tx-multiple-collision",
65 "tx-late-collsion",
66 "tx-aborted-frames",
67 "tx-lost-frames",
68 "tx-carrier-sense-errors",
69 "tx-frames-ok",
70 "tx-excessive-differ-frames",
71 "tx-256-511-frames",
72 "tx-512-1023-frames",
73 "tx-1024-1518-frames",
74 "tx-jumbo-frames",
75 };
76
77 static const char rx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
78 "rx-crc-errors",
79 "rx-alignment-errors",
80 "rx-in-range-length-errors",
81 "rx-out-of-range-length-errors",
82 "rx-too-long-frames",
83 "rx-runt",
84 "rx-very-long-event",
85 "rx-symbol-errors",
86 "rx-busy-drop-frames",
87 "reserved",
88 "reserved",
89 "rx-mismatch-drop-frames",
90 "rx-small-than-64",
91 "rx-256-511-frames",
92 "rx-512-1023-frames",
93 "rx-1024-1518-frames",
94 "rx-jumbo-frames",
95 "rx-mac-error-loss",
96 "rx-pause-frames",
97 "reserved",
98 "rx-vlan-removed",
99 "rx-vlan-replaced",
100 "rx-vlan-inserted",
101 "rx-ip-checksum-errors",
102 };
103
104 #define UEC_HW_STATS_LEN ARRAY_SIZE(hw_stat_gstrings)
105 #define UEC_TX_FW_STATS_LEN ARRAY_SIZE(tx_fw_stat_gstrings)
106 #define UEC_RX_FW_STATS_LEN ARRAY_SIZE(rx_fw_stat_gstrings)
107
108 static int
uec_get_settings(struct net_device * netdev,struct ethtool_cmd * ecmd)109 uec_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
110 {
111 struct ucc_geth_private *ugeth = netdev_priv(netdev);
112 struct phy_device *phydev = ugeth->phydev;
113 struct ucc_geth_info *ug_info = ugeth->ug_info;
114
115 if (!phydev)
116 return -ENODEV;
117
118 ecmd->maxtxpkt = 1;
119 ecmd->maxrxpkt = ug_info->interruptcoalescingmaxvalue[0];
120
121 return phy_ethtool_gset(phydev, ecmd);
122 }
123
124 static int
uec_set_settings(struct net_device * netdev,struct ethtool_cmd * ecmd)125 uec_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
126 {
127 struct ucc_geth_private *ugeth = netdev_priv(netdev);
128 struct phy_device *phydev = ugeth->phydev;
129
130 if (!phydev)
131 return -ENODEV;
132
133 return phy_ethtool_sset(phydev, ecmd);
134 }
135
136 static void
uec_get_pauseparam(struct net_device * netdev,struct ethtool_pauseparam * pause)137 uec_get_pauseparam(struct net_device *netdev,
138 struct ethtool_pauseparam *pause)
139 {
140 struct ucc_geth_private *ugeth = netdev_priv(netdev);
141
142 pause->autoneg = ugeth->phydev->autoneg;
143
144 if (ugeth->ug_info->receiveFlowControl)
145 pause->rx_pause = 1;
146 if (ugeth->ug_info->transmitFlowControl)
147 pause->tx_pause = 1;
148 }
149
150 static int
uec_set_pauseparam(struct net_device * netdev,struct ethtool_pauseparam * pause)151 uec_set_pauseparam(struct net_device *netdev,
152 struct ethtool_pauseparam *pause)
153 {
154 struct ucc_geth_private *ugeth = netdev_priv(netdev);
155 int ret = 0;
156
157 ugeth->ug_info->receiveFlowControl = pause->rx_pause;
158 ugeth->ug_info->transmitFlowControl = pause->tx_pause;
159
160 if (ugeth->phydev->autoneg) {
161 if (netif_running(netdev)) {
162 /* FIXME: automatically restart */
163 netdev_info(netdev, "Please re-open the interface\n");
164 }
165 } else {
166 struct ucc_geth_info *ug_info = ugeth->ug_info;
167
168 ret = init_flow_control_params(ug_info->aufc,
169 ug_info->receiveFlowControl,
170 ug_info->transmitFlowControl,
171 ug_info->pausePeriod,
172 ug_info->extensionField,
173 &ugeth->uccf->uf_regs->upsmr,
174 &ugeth->ug_regs->uempr,
175 &ugeth->ug_regs->maccfg1);
176 }
177
178 return ret;
179 }
180
181 static uint32_t
uec_get_msglevel(struct net_device * netdev)182 uec_get_msglevel(struct net_device *netdev)
183 {
184 struct ucc_geth_private *ugeth = netdev_priv(netdev);
185 return ugeth->msg_enable;
186 }
187
188 static void
uec_set_msglevel(struct net_device * netdev,uint32_t data)189 uec_set_msglevel(struct net_device *netdev, uint32_t data)
190 {
191 struct ucc_geth_private *ugeth = netdev_priv(netdev);
192 ugeth->msg_enable = data;
193 }
194
195 static int
uec_get_regs_len(struct net_device * netdev)196 uec_get_regs_len(struct net_device *netdev)
197 {
198 return sizeof(struct ucc_geth);
199 }
200
201 static void
uec_get_regs(struct net_device * netdev,struct ethtool_regs * regs,void * p)202 uec_get_regs(struct net_device *netdev,
203 struct ethtool_regs *regs, void *p)
204 {
205 int i;
206 struct ucc_geth_private *ugeth = netdev_priv(netdev);
207 u32 __iomem *ug_regs = (u32 __iomem *)ugeth->ug_regs;
208 u32 *buff = p;
209
210 for (i = 0; i < sizeof(struct ucc_geth) / sizeof(u32); i++)
211 buff[i] = in_be32(&ug_regs[i]);
212 }
213
214 static void
uec_get_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring)215 uec_get_ringparam(struct net_device *netdev,
216 struct ethtool_ringparam *ring)
217 {
218 struct ucc_geth_private *ugeth = netdev_priv(netdev);
219 struct ucc_geth_info *ug_info = ugeth->ug_info;
220 int queue = 0;
221
222 ring->rx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
223 ring->rx_mini_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
224 ring->rx_jumbo_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
225 ring->tx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
226
227 ring->rx_pending = ug_info->bdRingLenRx[queue];
228 ring->rx_mini_pending = ug_info->bdRingLenRx[queue];
229 ring->rx_jumbo_pending = ug_info->bdRingLenRx[queue];
230 ring->tx_pending = ug_info->bdRingLenTx[queue];
231 }
232
233 static int
uec_set_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring)234 uec_set_ringparam(struct net_device *netdev,
235 struct ethtool_ringparam *ring)
236 {
237 struct ucc_geth_private *ugeth = netdev_priv(netdev);
238 struct ucc_geth_info *ug_info = ugeth->ug_info;
239 int queue = 0, ret = 0;
240
241 if (ring->rx_pending < UCC_GETH_RX_BD_RING_SIZE_MIN) {
242 netdev_info(netdev, "RxBD ring size must be no smaller than %d\n",
243 UCC_GETH_RX_BD_RING_SIZE_MIN);
244 return -EINVAL;
245 }
246 if (ring->rx_pending % UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT) {
247 netdev_info(netdev, "RxBD ring size must be multiple of %d\n",
248 UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT);
249 return -EINVAL;
250 }
251 if (ring->tx_pending < UCC_GETH_TX_BD_RING_SIZE_MIN) {
252 netdev_info(netdev, "TxBD ring size must be no smaller than %d\n",
253 UCC_GETH_TX_BD_RING_SIZE_MIN);
254 return -EINVAL;
255 }
256
257 ug_info->bdRingLenRx[queue] = ring->rx_pending;
258 ug_info->bdRingLenTx[queue] = ring->tx_pending;
259
260 if (netif_running(netdev)) {
261 /* FIXME: restart automatically */
262 netdev_info(netdev, "Please re-open the interface\n");
263 }
264
265 return ret;
266 }
267
uec_get_sset_count(struct net_device * netdev,int sset)268 static int uec_get_sset_count(struct net_device *netdev, int sset)
269 {
270 struct ucc_geth_private *ugeth = netdev_priv(netdev);
271 u32 stats_mode = ugeth->ug_info->statisticsMode;
272 int len = 0;
273
274 switch (sset) {
275 case ETH_SS_STATS:
276 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
277 len += UEC_HW_STATS_LEN;
278 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
279 len += UEC_TX_FW_STATS_LEN;
280 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
281 len += UEC_RX_FW_STATS_LEN;
282
283 return len;
284
285 default:
286 return -EOPNOTSUPP;
287 }
288 }
289
uec_get_strings(struct net_device * netdev,u32 stringset,u8 * buf)290 static void uec_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
291 {
292 struct ucc_geth_private *ugeth = netdev_priv(netdev);
293 u32 stats_mode = ugeth->ug_info->statisticsMode;
294
295 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
296 memcpy(buf, hw_stat_gstrings, UEC_HW_STATS_LEN *
297 ETH_GSTRING_LEN);
298 buf += UEC_HW_STATS_LEN * ETH_GSTRING_LEN;
299 }
300 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
301 memcpy(buf, tx_fw_stat_gstrings, UEC_TX_FW_STATS_LEN *
302 ETH_GSTRING_LEN);
303 buf += UEC_TX_FW_STATS_LEN * ETH_GSTRING_LEN;
304 }
305 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
306 memcpy(buf, rx_fw_stat_gstrings, UEC_RX_FW_STATS_LEN *
307 ETH_GSTRING_LEN);
308 }
309
uec_get_ethtool_stats(struct net_device * netdev,struct ethtool_stats * stats,uint64_t * data)310 static void uec_get_ethtool_stats(struct net_device *netdev,
311 struct ethtool_stats *stats, uint64_t *data)
312 {
313 struct ucc_geth_private *ugeth = netdev_priv(netdev);
314 u32 stats_mode = ugeth->ug_info->statisticsMode;
315 u32 __iomem *base;
316 int i, j = 0;
317
318 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
319 if (ugeth->ug_regs)
320 base = (u32 __iomem *)&ugeth->ug_regs->tx64;
321 else
322 base = NULL;
323
324 for (i = 0; i < UEC_HW_STATS_LEN; i++)
325 data[j++] = base ? in_be32(&base[i]) : 0;
326 }
327 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
328 base = (u32 __iomem *)ugeth->p_tx_fw_statistics_pram;
329 for (i = 0; i < UEC_TX_FW_STATS_LEN; i++)
330 data[j++] = base ? in_be32(&base[i]) : 0;
331 }
332 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX) {
333 base = (u32 __iomem *)ugeth->p_rx_fw_statistics_pram;
334 for (i = 0; i < UEC_RX_FW_STATS_LEN; i++)
335 data[j++] = base ? in_be32(&base[i]) : 0;
336 }
337 }
338
uec_nway_reset(struct net_device * netdev)339 static int uec_nway_reset(struct net_device *netdev)
340 {
341 struct ucc_geth_private *ugeth = netdev_priv(netdev);
342
343 return phy_start_aneg(ugeth->phydev);
344 }
345
346 /* Report driver information */
347 static void
uec_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * drvinfo)348 uec_get_drvinfo(struct net_device *netdev,
349 struct ethtool_drvinfo *drvinfo)
350 {
351 strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
352 strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
353 strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
354 strlcpy(drvinfo->bus_info, "QUICC ENGINE", sizeof(drvinfo->bus_info));
355 drvinfo->eedump_len = 0;
356 drvinfo->regdump_len = uec_get_regs_len(netdev);
357 }
358
359 #ifdef CONFIG_PM
360
uec_get_wol(struct net_device * netdev,struct ethtool_wolinfo * wol)361 static void uec_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
362 {
363 struct ucc_geth_private *ugeth = netdev_priv(netdev);
364 struct phy_device *phydev = ugeth->phydev;
365
366 if (phydev && phydev->irq)
367 wol->supported |= WAKE_PHY;
368 if (qe_alive_during_sleep())
369 wol->supported |= WAKE_MAGIC;
370
371 wol->wolopts = ugeth->wol_en;
372 }
373
uec_set_wol(struct net_device * netdev,struct ethtool_wolinfo * wol)374 static int uec_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
375 {
376 struct ucc_geth_private *ugeth = netdev_priv(netdev);
377 struct phy_device *phydev = ugeth->phydev;
378
379 if (wol->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
380 return -EINVAL;
381 else if (wol->wolopts & WAKE_PHY && (!phydev || !phydev->irq))
382 return -EINVAL;
383 else if (wol->wolopts & WAKE_MAGIC && !qe_alive_during_sleep())
384 return -EINVAL;
385
386 ugeth->wol_en = wol->wolopts;
387 device_set_wakeup_enable(&netdev->dev, ugeth->wol_en);
388
389 return 0;
390 }
391
392 #else
393 #define uec_get_wol NULL
394 #define uec_set_wol NULL
395 #endif /* CONFIG_PM */
396
397 static const struct ethtool_ops uec_ethtool_ops = {
398 .get_settings = uec_get_settings,
399 .set_settings = uec_set_settings,
400 .get_drvinfo = uec_get_drvinfo,
401 .get_regs_len = uec_get_regs_len,
402 .get_regs = uec_get_regs,
403 .get_msglevel = uec_get_msglevel,
404 .set_msglevel = uec_set_msglevel,
405 .nway_reset = uec_nway_reset,
406 .get_link = ethtool_op_get_link,
407 .get_ringparam = uec_get_ringparam,
408 .set_ringparam = uec_set_ringparam,
409 .get_pauseparam = uec_get_pauseparam,
410 .set_pauseparam = uec_set_pauseparam,
411 .get_sset_count = uec_get_sset_count,
412 .get_strings = uec_get_strings,
413 .get_ethtool_stats = uec_get_ethtool_stats,
414 .get_wol = uec_get_wol,
415 .set_wol = uec_set_wol,
416 .get_ts_info = ethtool_op_get_ts_info,
417 };
418
uec_set_ethtool_ops(struct net_device * netdev)419 void uec_set_ethtool_ops(struct net_device *netdev)
420 {
421 SET_ETHTOOL_OPS(netdev, &uec_ethtool_ops);
422 }
423