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 paramters.
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/fsl_devices.h>
32 #include <linux/ethtool.h>
33 #include <linux/mii.h>
34 #include <linux/phy.h>
35
36 #include <asm/io.h>
37 #include <asm/irq.h>
38 #include <asm/uaccess.h>
39 #include <asm/types.h>
40 #include <asm/uaccess.h>
41
42 #include "ucc_geth.h"
43 #include "ucc_geth_mii.h"
44
45 static char hw_stat_gstrings[][ETH_GSTRING_LEN] = {
46         "tx-64-frames",
47         "tx-65-127-frames",
48         "tx-128-255-frames",
49         "rx-64-frames",
50         "rx-65-127-frames",
51         "rx-128-255-frames",
52         "tx-bytes-ok",
53         "tx-pause-frames",
54         "tx-multicast-frames",
55         "tx-broadcast-frames",
56         "rx-frames",
57         "rx-bytes-ok",
58         "rx-bytes-all",
59         "rx-multicast-frames",
60         "rx-broadcast-frames",
61         "stats-counter-carry",
62         "stats-counter-mask",
63         "rx-dropped-frames",
64 };
65
66 static char tx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
67         "tx-single-collision",
68         "tx-multiple-collision",
69         "tx-late-collsion",
70         "tx-aborted-frames",
71         "tx-lost-frames",
72         "tx-carrier-sense-errors",
73         "tx-frames-ok",
74         "tx-excessive-differ-frames",
75         "tx-256-511-frames",
76         "tx-512-1023-frames",
77         "tx-1024-1518-frames",
78         "tx-jumbo-frames",
79 };
80
81 static char rx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
82         "rx-crc-errors",
83         "rx-alignment-errors",
84         "rx-in-range-length-errors",
85         "rx-out-of-range-length-errors",
86         "rx-too-long-frames",
87         "rx-runt",
88         "rx-very-long-event",
89         "rx-symbol-errors",
90         "rx-busy-drop-frames",
91         "reserved",
92         "reserved",
93         "rx-mismatch-drop-frames",
94         "rx-small-than-64",
95         "rx-256-511-frames",
96         "rx-512-1023-frames",
97         "rx-1024-1518-frames",
98         "rx-jumbo-frames",
99         "rx-mac-error-loss",
100         "rx-pause-frames",
101         "reserved",
102         "rx-vlan-removed",
103         "rx-vlan-replaced",
104         "rx-vlan-inserted",
105         "rx-ip-checksum-errors",
106 };
107
108 #define UEC_HW_STATS_LEN ARRAY_SIZE(hw_stat_gstrings)
109 #define UEC_TX_FW_STATS_LEN ARRAY_SIZE(tx_fw_stat_gstrings)
110 #define UEC_RX_FW_STATS_LEN ARRAY_SIZE(rx_fw_stat_gstrings)
111
112 static int
113 uec_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
114 {
115         struct ucc_geth_private *ugeth = netdev_priv(netdev);
116         struct phy_device *phydev = ugeth->phydev;
117         struct ucc_geth_info *ug_info = ugeth->ug_info;
118
119         if (!phydev)
120                 return -ENODEV;
121
122         ecmd->maxtxpkt = 1;
123         ecmd->maxrxpkt = ug_info->interruptcoalescingmaxvalue[0];
124
125         return phy_ethtool_gset(phydev, ecmd);
126 }
127
128 static int
129 uec_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
130 {
131         struct ucc_geth_private *ugeth = netdev_priv(netdev);
132         struct phy_device *phydev = ugeth->phydev;
133
134         if (!phydev)
135                 return -ENODEV;
136
137         return phy_ethtool_sset(phydev, ecmd);
138 }
139
140 static void
141 uec_get_pauseparam(struct net_device *netdev,
142                      struct ethtool_pauseparam *pause)
143 {
144         struct ucc_geth_private *ugeth = netdev_priv(netdev);
145
146         pause->autoneg = ugeth->phydev->autoneg;
147
148         if (ugeth->ug_info->receiveFlowControl)
149                 pause->rx_pause = 1;
150         if (ugeth->ug_info->transmitFlowControl)
151                 pause->tx_pause = 1;
152 }
153
154 static int
155 uec_set_pauseparam(struct net_device *netdev,
156                      struct ethtool_pauseparam *pause)
157 {
158         struct ucc_geth_private *ugeth = netdev_priv(netdev);
159         int ret = 0;
160
161         ugeth->ug_info->receiveFlowControl = pause->rx_pause;
162         ugeth->ug_info->transmitFlowControl = pause->tx_pause;
163
164         if (ugeth->phydev->autoneg) {
165                 if (netif_running(netdev)) {
166                         /* FIXME: automatically restart */
167                         printk(KERN_INFO
168                                 "Please re-open the interface.\n");
169                 }
170         } else {
171                 struct ucc_geth_info *ug_info = ugeth->ug_info;
172
173                 ret = init_flow_control_params(ug_info->aufc,
174                                         ug_info->receiveFlowControl,
175                                         ug_info->transmitFlowControl,
176                                         ug_info->pausePeriod,
177                                         ug_info->extensionField,
178                                         &ugeth->uccf->uf_regs->upsmr,
179                                         &ugeth->ug_regs->uempr,
180                                         &ugeth->ug_regs->maccfg1);
181         }
182
183         return ret;
184 }
185
186 static uint32_t
187 uec_get_msglevel(struct net_device *netdev)
188 {
189         struct ucc_geth_private *ugeth = netdev_priv(netdev);
190         return ugeth->msg_enable;
191 }
192
193 static void
194 uec_set_msglevel(struct net_device *netdev, uint32_t data)
195 {
196         struct ucc_geth_private *ugeth = netdev_priv(netdev);
197         ugeth->msg_enable = data;
198 }
199
200 static int
201 uec_get_regs_len(struct net_device *netdev)
202 {
203         return sizeof(struct ucc_geth);
204 }
205
206 static void
207 uec_get_regs(struct net_device *netdev,
208                struct ethtool_regs *regs, void *p)
209 {
210         int i;
211         struct ucc_geth_private *ugeth = netdev_priv(netdev);
212         u32 __iomem *ug_regs = (u32 __iomem *)ugeth->ug_regs;
213         u32 *buff = p;
214
215         for (i = 0; i < sizeof(struct ucc_geth) / sizeof(u32); i++)
216                 buff[i] = in_be32(&ug_regs[i]);
217 }
218
219 static void
220 uec_get_ringparam(struct net_device *netdev,
221                     struct ethtool_ringparam *ring)
222 {
223         struct ucc_geth_private *ugeth = netdev_priv(netdev);
224         struct ucc_geth_info *ug_info = ugeth->ug_info;
225         int queue = 0;
226
227         ring->rx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
228         ring->rx_mini_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
229         ring->rx_jumbo_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
230         ring->tx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
231
232         ring->rx_pending = ug_info->bdRingLenRx[queue];
233         ring->rx_mini_pending = ug_info->bdRingLenRx[queue];
234         ring->rx_jumbo_pending = ug_info->bdRingLenRx[queue];
235         ring->tx_pending = ug_info->bdRingLenTx[queue];
236 }
237
238 static int
239 uec_set_ringparam(struct net_device *netdev,
240                     struct ethtool_ringparam *ring)
241 {
242         struct ucc_geth_private *ugeth = netdev_priv(netdev);
243         struct ucc_geth_info *ug_info = ugeth->ug_info;
244         int queue = 0, ret = 0;
245
246         if (ring->rx_pending < UCC_GETH_RX_BD_RING_SIZE_MIN) {
247                 printk("%s: RxBD ring size must be no smaller than %d.\n",
248                                 netdev->name, UCC_GETH_RX_BD_RING_SIZE_MIN);
249                 return -EINVAL;
250         }
251         if (ring->rx_pending % UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT) {
252                 printk("%s: RxBD ring size must be multiple of %d.\n",
253                         netdev->name, UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT);
254                 return -EINVAL;
255         }
256         if (ring->tx_pending < UCC_GETH_TX_BD_RING_SIZE_MIN) {
257                 printk("%s: TxBD ring size must be no smaller than %d.\n",
258                                 netdev->name, UCC_GETH_TX_BD_RING_SIZE_MIN);
259                 return -EINVAL;
260         }
261
262         ug_info->bdRingLenRx[queue] = ring->rx_pending;
263         ug_info->bdRingLenTx[queue] = ring->tx_pending;
264
265         if (netif_running(netdev)) {
266                 /* FIXME: restart automatically */
267                 printk(KERN_INFO
268                         "Please re-open the interface.\n");
269         }
270
271         return ret;
272 }
273
274 static int uec_get_sset_count(struct net_device *netdev, int sset)
275 {
276         struct ucc_geth_private *ugeth = netdev_priv(netdev);
277         u32 stats_mode = ugeth->ug_info->statisticsMode;
278         int len = 0;
279
280         switch (sset) {
281         case ETH_SS_STATS:
282                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
283                         len += UEC_HW_STATS_LEN;
284                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
285                         len += UEC_TX_FW_STATS_LEN;
286                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
287                         len += UEC_RX_FW_STATS_LEN;
288
289                 return len;
290
291         default:
292                 return -EOPNOTSUPP;
293         }
294 }
295
296 static void uec_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
297 {
298         struct ucc_geth_private *ugeth = netdev_priv(netdev);
299         u32 stats_mode = ugeth->ug_info->statisticsMode;
300
301         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
302                 memcpy(buf, hw_stat_gstrings, UEC_HW_STATS_LEN *
303                                 ETH_GSTRING_LEN);
304                 buf += UEC_HW_STATS_LEN * ETH_GSTRING_LEN;
305         }
306         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
307                 memcpy(buf, tx_fw_stat_gstrings, UEC_TX_FW_STATS_LEN *
308                                 ETH_GSTRING_LEN);
309                 buf += UEC_TX_FW_STATS_LEN * ETH_GSTRING_LEN;
310         }
311         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
312                 memcpy(buf, rx_fw_stat_gstrings, UEC_RX_FW_STATS_LEN *
313                                 ETH_GSTRING_LEN);
314 }
315
316 static void uec_get_ethtool_stats(struct net_device *netdev,
317                 struct ethtool_stats *stats, uint64_t *data)
318 {
319         struct ucc_geth_private *ugeth = netdev_priv(netdev);
320         u32 stats_mode = ugeth->ug_info->statisticsMode;
321         u32 __iomem *base;
322         int i, j = 0;
323
324         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
325                 base = (u32 __iomem *)&ugeth->ug_regs->tx64;
326                 for (i = 0; i < UEC_HW_STATS_LEN; i++)
327                         data[j++] = (u64)in_be32(&base[i]);
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++] = (u64)in_be32(&base[i]);
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++] = (u64)in_be32(&base[i]);
338         }
339 }
340
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
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 static const struct ethtool_ops uec_ethtool_ops = {
362         .get_settings           = uec_get_settings,
363         .set_settings           = uec_set_settings,
364         .get_drvinfo            = uec_get_drvinfo,
365         .get_regs_len           = uec_get_regs_len,
366         .get_regs               = uec_get_regs,
367         .get_msglevel           = uec_get_msglevel,
368         .set_msglevel           = uec_set_msglevel,
369         .nway_reset             = uec_nway_reset,
370         .get_link               = ethtool_op_get_link,
371         .get_ringparam          = uec_get_ringparam,
372         .set_ringparam          = uec_set_ringparam,
373         .get_pauseparam         = uec_get_pauseparam,
374         .set_pauseparam         = uec_set_pauseparam,
375         .set_sg                 = ethtool_op_set_sg,
376         .get_sset_count         = uec_get_sset_count,
377         .get_strings            = uec_get_strings,
378         .get_ethtool_stats      = uec_get_ethtool_stats,
379 };
380
381 void uec_set_ethtool_ops(struct net_device *netdev)
382 {
383         SET_ETHTOOL_OPS(netdev, &uec_ethtool_ops);
384 }