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 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 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 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 printk(KERN_INFO
164 "Please re-open the interface.\n");
165 }
166 } else {
167 struct ucc_geth_info *ug_info = ugeth->ug_info;
168
169 ret = init_flow_control_params(ug_info->aufc,
170 ug_info->receiveFlowControl,
171 ug_info->transmitFlowControl,
172 ug_info->pausePeriod,
173 ug_info->extensionField,
174 &ugeth->uccf->uf_regs->upsmr,
175 &ugeth->ug_regs->uempr,
176 &ugeth->ug_regs->maccfg1);
177 }
178
179 return ret;
180 }
181
182 static uint32_t
uec_get_msglevel(struct net_device * netdev)183 uec_get_msglevel(struct net_device *netdev)
184 {
185 struct ucc_geth_private *ugeth = netdev_priv(netdev);
186 return ugeth->msg_enable;
187 }
188
189 static void
uec_set_msglevel(struct net_device * netdev,uint32_t data)190 uec_set_msglevel(struct net_device *netdev, uint32_t data)
191 {
192 struct ucc_geth_private *ugeth = netdev_priv(netdev);
193 ugeth->msg_enable = data;
194 }
195
196 static int
uec_get_regs_len(struct net_device * netdev)197 uec_get_regs_len(struct net_device *netdev)
198 {
199 return sizeof(struct ucc_geth);
200 }
201
202 static void
uec_get_regs(struct net_device * netdev,struct ethtool_regs * regs,void * p)203 uec_get_regs(struct net_device *netdev,
204 struct ethtool_regs *regs, void *p)
205 {
206 int i;
207 struct ucc_geth_private *ugeth = netdev_priv(netdev);
208 u32 __iomem *ug_regs = (u32 __iomem *)ugeth->ug_regs;
209 u32 *buff = p;
210
211 for (i = 0; i < sizeof(struct ucc_geth) / sizeof(u32); i++)
212 buff[i] = in_be32(&ug_regs[i]);
213 }
214
215 static void
uec_get_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring)216 uec_get_ringparam(struct net_device *netdev,
217 struct ethtool_ringparam *ring)
218 {
219 struct ucc_geth_private *ugeth = netdev_priv(netdev);
220 struct ucc_geth_info *ug_info = ugeth->ug_info;
221 int queue = 0;
222
223 ring->rx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
224 ring->rx_mini_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
225 ring->rx_jumbo_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
226 ring->tx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
227
228 ring->rx_pending = ug_info->bdRingLenRx[queue];
229 ring->rx_mini_pending = ug_info->bdRingLenRx[queue];
230 ring->rx_jumbo_pending = ug_info->bdRingLenRx[queue];
231 ring->tx_pending = ug_info->bdRingLenTx[queue];
232 }
233
234 static int
uec_set_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring)235 uec_set_ringparam(struct net_device *netdev,
236 struct ethtool_ringparam *ring)
237 {
238 struct ucc_geth_private *ugeth = netdev_priv(netdev);
239 struct ucc_geth_info *ug_info = ugeth->ug_info;
240 int queue = 0, ret = 0;
241
242 if (ring->rx_pending < UCC_GETH_RX_BD_RING_SIZE_MIN) {
243 printk("%s: RxBD ring size must be no smaller than %d.\n",
244 netdev->name, UCC_GETH_RX_BD_RING_SIZE_MIN);
245 return -EINVAL;
246 }
247 if (ring->rx_pending % UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT) {
248 printk("%s: RxBD ring size must be multiple of %d.\n",
249 netdev->name, UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT);
250 return -EINVAL;
251 }
252 if (ring->tx_pending < UCC_GETH_TX_BD_RING_SIZE_MIN) {
253 printk("%s: TxBD ring size must be no smaller than %d.\n",
254 netdev->name, UCC_GETH_TX_BD_RING_SIZE_MIN);
255 return -EINVAL;
256 }
257
258 ug_info->bdRingLenRx[queue] = ring->rx_pending;
259 ug_info->bdRingLenTx[queue] = ring->tx_pending;
260
261 if (netif_running(netdev)) {
262 /* FIXME: restart automatically */
263 printk(KERN_INFO
264 "Please re-open the interface.\n");
265 }
266
267 return ret;
268 }
269
uec_get_sset_count(struct net_device * netdev,int sset)270 static int uec_get_sset_count(struct net_device *netdev, int sset)
271 {
272 struct ucc_geth_private *ugeth = netdev_priv(netdev);
273 u32 stats_mode = ugeth->ug_info->statisticsMode;
274 int len = 0;
275
276 switch (sset) {
277 case ETH_SS_STATS:
278 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
279 len += UEC_HW_STATS_LEN;
280 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
281 len += UEC_TX_FW_STATS_LEN;
282 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
283 len += UEC_RX_FW_STATS_LEN;
284
285 return len;
286
287 default:
288 return -EOPNOTSUPP;
289 }
290 }
291
uec_get_strings(struct net_device * netdev,u32 stringset,u8 * buf)292 static void uec_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
293 {
294 struct ucc_geth_private *ugeth = netdev_priv(netdev);
295 u32 stats_mode = ugeth->ug_info->statisticsMode;
296
297 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
298 memcpy(buf, hw_stat_gstrings, UEC_HW_STATS_LEN *
299 ETH_GSTRING_LEN);
300 buf += UEC_HW_STATS_LEN * ETH_GSTRING_LEN;
301 }
302 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
303 memcpy(buf, tx_fw_stat_gstrings, UEC_TX_FW_STATS_LEN *
304 ETH_GSTRING_LEN);
305 buf += UEC_TX_FW_STATS_LEN * ETH_GSTRING_LEN;
306 }
307 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
308 memcpy(buf, rx_fw_stat_gstrings, UEC_RX_FW_STATS_LEN *
309 ETH_GSTRING_LEN);
310 }
311
uec_get_ethtool_stats(struct net_device * netdev,struct ethtool_stats * stats,uint64_t * data)312 static void uec_get_ethtool_stats(struct net_device *netdev,
313 struct ethtool_stats *stats, uint64_t *data)
314 {
315 struct ucc_geth_private *ugeth = netdev_priv(netdev);
316 u32 stats_mode = ugeth->ug_info->statisticsMode;
317 u32 __iomem *base;
318 int i, j = 0;
319
320 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
321 if (ugeth->ug_regs)
322 base = (u32 __iomem *)&ugeth->ug_regs->tx64;
323 else
324 base = NULL;
325
326 for (i = 0; i < UEC_HW_STATS_LEN; i++)
327 data[j++] = base ? in_be32(&base[i]) : 0;
328 }
329 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
330 base = (u32 __iomem *)ugeth->p_tx_fw_statistics_pram;
331 for (i = 0; i < UEC_TX_FW_STATS_LEN; i++)
332 data[j++] = base ? in_be32(&base[i]) : 0;
333 }
334 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX) {
335 base = (u32 __iomem *)ugeth->p_rx_fw_statistics_pram;
336 for (i = 0; i < UEC_RX_FW_STATS_LEN; i++)
337 data[j++] = base ? in_be32(&base[i]) : 0;
338 }
339 }
340
uec_nway_reset(struct net_device * netdev)341 static int uec_nway_reset(struct net_device *netdev)
342 {
343 struct ucc_geth_private *ugeth = netdev_priv(netdev);
344
345 return phy_start_aneg(ugeth->phydev);
346 }
347
348 /* Report driver information */
349 static void
uec_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * drvinfo)350 uec_get_drvinfo(struct net_device *netdev,
351 struct ethtool_drvinfo *drvinfo)
352 {
353 strncpy(drvinfo->driver, DRV_NAME, 32);
354 strncpy(drvinfo->version, DRV_VERSION, 32);
355 strncpy(drvinfo->fw_version, "N/A", 32);
356 strncpy(drvinfo->bus_info, "QUICC ENGINE", 32);
357 drvinfo->eedump_len = 0;
358 drvinfo->regdump_len = uec_get_regs_len(netdev);
359 }
360
361 #ifdef CONFIG_PM
362
uec_get_wol(struct net_device * netdev,struct ethtool_wolinfo * wol)363 static void uec_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
364 {
365 struct ucc_geth_private *ugeth = netdev_priv(netdev);
366 struct phy_device *phydev = ugeth->phydev;
367
368 if (phydev && phydev->irq)
369 wol->supported |= WAKE_PHY;
370 if (qe_alive_during_sleep())
371 wol->supported |= WAKE_MAGIC;
372
373 wol->wolopts = ugeth->wol_en;
374 }
375
uec_set_wol(struct net_device * netdev,struct ethtool_wolinfo * wol)376 static int uec_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
377 {
378 struct ucc_geth_private *ugeth = netdev_priv(netdev);
379 struct phy_device *phydev = ugeth->phydev;
380
381 if (wol->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
382 return -EINVAL;
383 else if (wol->wolopts & WAKE_PHY && (!phydev || !phydev->irq))
384 return -EINVAL;
385 else if (wol->wolopts & WAKE_MAGIC && !qe_alive_during_sleep())
386 return -EINVAL;
387
388 ugeth->wol_en = wol->wolopts;
389 device_set_wakeup_enable(&netdev->dev, ugeth->wol_en);
390
391 return 0;
392 }
393
394 #else
395 #define uec_get_wol NULL
396 #define uec_set_wol NULL
397 #endif /* CONFIG_PM */
398
399 static const struct ethtool_ops uec_ethtool_ops = {
400 .get_settings = uec_get_settings,
401 .set_settings = uec_set_settings,
402 .get_drvinfo = uec_get_drvinfo,
403 .get_regs_len = uec_get_regs_len,
404 .get_regs = uec_get_regs,
405 .get_msglevel = uec_get_msglevel,
406 .set_msglevel = uec_set_msglevel,
407 .nway_reset = uec_nway_reset,
408 .get_link = ethtool_op_get_link,
409 .get_ringparam = uec_get_ringparam,
410 .set_ringparam = uec_set_ringparam,
411 .get_pauseparam = uec_get_pauseparam,
412 .set_pauseparam = uec_set_pauseparam,
413 .get_sset_count = uec_get_sset_count,
414 .get_strings = uec_get_strings,
415 .get_ethtool_stats = uec_get_ethtool_stats,
416 .get_wol = uec_get_wol,
417 .set_wol = uec_set_wol,
418 };
419
uec_set_ethtool_ops(struct net_device * netdev)420 void uec_set_ethtool_ops(struct net_device *netdev)
421 {
422 SET_ETHTOOL_OPS(netdev, &uec_ethtool_ops);
423 }
424