Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[linux-2.6.git] / drivers / net / ucc_geth_ethtool.c
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 setttings 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/slab.h>
22 #include <linux/stddef.h>
23 #include <linux/interrupt.h>
24 #include <linux/netdevice.h>
25 #include <linux/etherdevice.h>
26 #include <linux/skbuff.h>
27 #include <linux/spinlock.h>
28 #include <linux/mm.h>
29 #include <linux/delay.h>
30 #include <linux/dma-mapping.h>
31 #include <linux/ethtool.h>
32 #include <linux/mii.h>
33 #include <linux/phy.h>
34
35 #include <asm/io.h>
36 #include <asm/irq.h>
37 #include <asm/uaccess.h>
38 #include <asm/types.h>
39
40 #include "ucc_geth.h"
41
42 static char hw_stat_gstrings[][ETH_GSTRING_LEN] = {
43         "tx-64-frames",
44         "tx-65-127-frames",
45         "tx-128-255-frames",
46         "rx-64-frames",
47         "rx-65-127-frames",
48         "rx-128-255-frames",
49         "tx-bytes-ok",
50         "tx-pause-frames",
51         "tx-multicast-frames",
52         "tx-broadcast-frames",
53         "rx-frames",
54         "rx-bytes-ok",
55         "rx-bytes-all",
56         "rx-multicast-frames",
57         "rx-broadcast-frames",
58         "stats-counter-carry",
59         "stats-counter-mask",
60         "rx-dropped-frames",
61 };
62
63 static char tx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
64         "tx-single-collision",
65         "tx-multiple-collision",
66         "tx-late-collsion",
67         "tx-aborted-frames",
68         "tx-lost-frames",
69         "tx-carrier-sense-errors",
70         "tx-frames-ok",
71         "tx-excessive-differ-frames",
72         "tx-256-511-frames",
73         "tx-512-1023-frames",
74         "tx-1024-1518-frames",
75         "tx-jumbo-frames",
76 };
77
78 static char rx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
79         "rx-crc-errors",
80         "rx-alignment-errors",
81         "rx-in-range-length-errors",
82         "rx-out-of-range-length-errors",
83         "rx-too-long-frames",
84         "rx-runt",
85         "rx-very-long-event",
86         "rx-symbol-errors",
87         "rx-busy-drop-frames",
88         "reserved",
89         "reserved",
90         "rx-mismatch-drop-frames",
91         "rx-small-than-64",
92         "rx-256-511-frames",
93         "rx-512-1023-frames",
94         "rx-1024-1518-frames",
95         "rx-jumbo-frames",
96         "rx-mac-error-loss",
97         "rx-pause-frames",
98         "reserved",
99         "rx-vlan-removed",
100         "rx-vlan-replaced",
101         "rx-vlan-inserted",
102         "rx-ip-checksum-errors",
103 };
104
105 #define UEC_HW_STATS_LEN ARRAY_SIZE(hw_stat_gstrings)
106 #define UEC_TX_FW_STATS_LEN ARRAY_SIZE(tx_fw_stat_gstrings)
107 #define UEC_RX_FW_STATS_LEN ARRAY_SIZE(rx_fw_stat_gstrings)
108
109 static int
110 uec_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
111 {
112         struct ucc_geth_private *ugeth = netdev_priv(netdev);
113         struct phy_device *phydev = ugeth->phydev;
114         struct ucc_geth_info *ug_info = ugeth->ug_info;
115
116         if (!phydev)
117                 return -ENODEV;
118
119         ecmd->maxtxpkt = 1;
120         ecmd->maxrxpkt = ug_info->interruptcoalescingmaxvalue[0];
121
122         return phy_ethtool_gset(phydev, ecmd);
123 }
124
125 static int
126 uec_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
127 {
128         struct ucc_geth_private *ugeth = netdev_priv(netdev);
129         struct phy_device *phydev = ugeth->phydev;
130
131         if (!phydev)
132                 return -ENODEV;
133
134         return phy_ethtool_sset(phydev, ecmd);
135 }
136
137 static void
138 uec_get_pauseparam(struct net_device *netdev,
139                      struct ethtool_pauseparam *pause)
140 {
141         struct ucc_geth_private *ugeth = netdev_priv(netdev);
142
143         pause->autoneg = ugeth->phydev->autoneg;
144
145         if (ugeth->ug_info->receiveFlowControl)
146                 pause->rx_pause = 1;
147         if (ugeth->ug_info->transmitFlowControl)
148                 pause->tx_pause = 1;
149 }
150
151 static int
152 uec_set_pauseparam(struct net_device *netdev,
153                      struct ethtool_pauseparam *pause)
154 {
155         struct ucc_geth_private *ugeth = netdev_priv(netdev);
156         int ret = 0;
157
158         ugeth->ug_info->receiveFlowControl = pause->rx_pause;
159         ugeth->ug_info->transmitFlowControl = pause->tx_pause;
160
161         if (ugeth->phydev->autoneg) {
162                 if (netif_running(netdev)) {
163                         /* FIXME: automatically restart */
164                         printk(KERN_INFO
165                                 "Please re-open the interface.\n");
166                 }
167         } else {
168                 struct ucc_geth_info *ug_info = ugeth->ug_info;
169
170                 ret = init_flow_control_params(ug_info->aufc,
171                                         ug_info->receiveFlowControl,
172                                         ug_info->transmitFlowControl,
173                                         ug_info->pausePeriod,
174                                         ug_info->extensionField,
175                                         &ugeth->uccf->uf_regs->upsmr,
176                                         &ugeth->ug_regs->uempr,
177                                         &ugeth->ug_regs->maccfg1);
178         }
179
180         return ret;
181 }
182
183 static uint32_t
184 uec_get_msglevel(struct net_device *netdev)
185 {
186         struct ucc_geth_private *ugeth = netdev_priv(netdev);
187         return ugeth->msg_enable;
188 }
189
190 static void
191 uec_set_msglevel(struct net_device *netdev, uint32_t data)
192 {
193         struct ucc_geth_private *ugeth = netdev_priv(netdev);
194         ugeth->msg_enable = data;
195 }
196
197 static int
198 uec_get_regs_len(struct net_device *netdev)
199 {
200         return sizeof(struct ucc_geth);
201 }
202
203 static void
204 uec_get_regs(struct net_device *netdev,
205                struct ethtool_regs *regs, void *p)
206 {
207         int i;
208         struct ucc_geth_private *ugeth = netdev_priv(netdev);
209         u32 __iomem *ug_regs = (u32 __iomem *)ugeth->ug_regs;
210         u32 *buff = p;
211
212         for (i = 0; i < sizeof(struct ucc_geth) / sizeof(u32); i++)
213                 buff[i] = in_be32(&ug_regs[i]);
214 }
215
216 static void
217 uec_get_ringparam(struct net_device *netdev,
218                     struct ethtool_ringparam *ring)
219 {
220         struct ucc_geth_private *ugeth = netdev_priv(netdev);
221         struct ucc_geth_info *ug_info = ugeth->ug_info;
222         int queue = 0;
223
224         ring->rx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
225         ring->rx_mini_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
226         ring->rx_jumbo_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
227         ring->tx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
228
229         ring->rx_pending = ug_info->bdRingLenRx[queue];
230         ring->rx_mini_pending = ug_info->bdRingLenRx[queue];
231         ring->rx_jumbo_pending = ug_info->bdRingLenRx[queue];
232         ring->tx_pending = ug_info->bdRingLenTx[queue];
233 }
234
235 static int
236 uec_set_ringparam(struct net_device *netdev,
237                     struct ethtool_ringparam *ring)
238 {
239         struct ucc_geth_private *ugeth = netdev_priv(netdev);
240         struct ucc_geth_info *ug_info = ugeth->ug_info;
241         int queue = 0, ret = 0;
242
243         if (ring->rx_pending < UCC_GETH_RX_BD_RING_SIZE_MIN) {
244                 printk("%s: RxBD ring size must be no smaller than %d.\n",
245                                 netdev->name, UCC_GETH_RX_BD_RING_SIZE_MIN);
246                 return -EINVAL;
247         }
248         if (ring->rx_pending % UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT) {
249                 printk("%s: RxBD ring size must be multiple of %d.\n",
250                         netdev->name, UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT);
251                 return -EINVAL;
252         }
253         if (ring->tx_pending < UCC_GETH_TX_BD_RING_SIZE_MIN) {
254                 printk("%s: TxBD ring size must be no smaller than %d.\n",
255                                 netdev->name, UCC_GETH_TX_BD_RING_SIZE_MIN);
256                 return -EINVAL;
257         }
258
259         ug_info->bdRingLenRx[queue] = ring->rx_pending;
260         ug_info->bdRingLenTx[queue] = ring->tx_pending;
261
262         if (netif_running(netdev)) {
263                 /* FIXME: restart automatically */
264                 printk(KERN_INFO
265                         "Please re-open the interface.\n");
266         }
267
268         return ret;
269 }
270
271 static int uec_get_sset_count(struct net_device *netdev, int sset)
272 {
273         struct ucc_geth_private *ugeth = netdev_priv(netdev);
274         u32 stats_mode = ugeth->ug_info->statisticsMode;
275         int len = 0;
276
277         switch (sset) {
278         case ETH_SS_STATS:
279                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
280                         len += UEC_HW_STATS_LEN;
281                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
282                         len += UEC_TX_FW_STATS_LEN;
283                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
284                         len += UEC_RX_FW_STATS_LEN;
285
286                 return len;
287
288         default:
289                 return -EOPNOTSUPP;
290         }
291 }
292
293 static void uec_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
294 {
295         struct ucc_geth_private *ugeth = netdev_priv(netdev);
296         u32 stats_mode = ugeth->ug_info->statisticsMode;
297
298         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
299                 memcpy(buf, hw_stat_gstrings, UEC_HW_STATS_LEN *
300                                 ETH_GSTRING_LEN);
301                 buf += UEC_HW_STATS_LEN * ETH_GSTRING_LEN;
302         }
303         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
304                 memcpy(buf, tx_fw_stat_gstrings, UEC_TX_FW_STATS_LEN *
305                                 ETH_GSTRING_LEN);
306                 buf += UEC_TX_FW_STATS_LEN * ETH_GSTRING_LEN;
307         }
308         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
309                 memcpy(buf, rx_fw_stat_gstrings, UEC_RX_FW_STATS_LEN *
310                                 ETH_GSTRING_LEN);
311 }
312
313 static void uec_get_ethtool_stats(struct net_device *netdev,
314                 struct ethtool_stats *stats, uint64_t *data)
315 {
316         struct ucc_geth_private *ugeth = netdev_priv(netdev);
317         u32 stats_mode = ugeth->ug_info->statisticsMode;
318         u32 __iomem *base;
319         int i, j = 0;
320
321         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
322                 base = (u32 __iomem *)&ugeth->ug_regs->tx64;
323                 for (i = 0; i < UEC_HW_STATS_LEN; i++)
324                         data[j++] = in_be32(&base[i]);
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
338 static 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 */
346 static void
347 uec_get_drvinfo(struct net_device *netdev,
348                        struct ethtool_drvinfo *drvinfo)
349 {
350         strncpy(drvinfo->driver, DRV_NAME, 32);
351         strncpy(drvinfo->version, DRV_VERSION, 32);
352         strncpy(drvinfo->fw_version, "N/A", 32);
353         strncpy(drvinfo->bus_info, "QUICC ENGINE", 32);
354         drvinfo->eedump_len = 0;
355         drvinfo->regdump_len = uec_get_regs_len(netdev);
356 }
357
358 static const struct ethtool_ops uec_ethtool_ops = {
359         .get_settings           = uec_get_settings,
360         .set_settings           = uec_set_settings,
361         .get_drvinfo            = uec_get_drvinfo,
362         .get_regs_len           = uec_get_regs_len,
363         .get_regs               = uec_get_regs,
364         .get_msglevel           = uec_get_msglevel,
365         .set_msglevel           = uec_set_msglevel,
366         .nway_reset             = uec_nway_reset,
367         .get_link               = ethtool_op_get_link,
368         .get_ringparam          = uec_get_ringparam,
369         .set_ringparam          = uec_set_ringparam,
370         .get_pauseparam         = uec_get_pauseparam,
371         .set_pauseparam         = uec_set_pauseparam,
372         .set_sg                 = ethtool_op_set_sg,
373         .get_sset_count         = uec_get_sset_count,
374         .get_strings            = uec_get_strings,
375         .get_ethtool_stats      = uec_get_ethtool_stats,
376 };
377
378 void uec_set_ethtool_ops(struct net_device *netdev)
379 {
380         SET_ETHTOOL_OPS(netdev, &uec_ethtool_ops);
381 }