isdn/capi: Return proper errnos on module init.
[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-1024-1518-frames",
77         "tx-jumbo-frames",
78 };
79
80 static char rx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
81         "rx-crc-errors",
82         "rx-alignment-errors",
83         "rx-in-range-length-errors",
84         "rx-out-of-range-length-errors",
85         "rx-too-long-frames",
86         "rx-runt",
87         "rx-very-long-event",
88         "rx-symbol-errors",
89         "rx-busy-drop-frames",
90         "reserved",
91         "reserved",
92         "rx-mismatch-drop-frames",
93         "rx-small-than-64",
94         "rx-256-511-frames",
95         "rx-512-1023-frames",
96         "rx-1024-1518-frames",
97         "rx-jumbo-frames",
98         "rx-mac-error-loss",
99         "rx-pause-frames",
100         "reserved",
101         "rx-vlan-removed",
102         "rx-vlan-replaced",
103         "rx-vlan-inserted",
104         "rx-ip-checksum-errors",
105 };
106
107 #define UEC_HW_STATS_LEN ARRAY_SIZE(hw_stat_gstrings)
108 #define UEC_TX_FW_STATS_LEN ARRAY_SIZE(tx_fw_stat_gstrings)
109 #define UEC_RX_FW_STATS_LEN ARRAY_SIZE(rx_fw_stat_gstrings)
110
111 static int
112 uec_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
113 {
114         struct ucc_geth_private *ugeth = netdev_priv(netdev);
115         struct phy_device *phydev = ugeth->phydev;
116         struct ucc_geth_info *ug_info = ugeth->ug_info;
117
118         if (!phydev)
119                 return -ENODEV;
120
121         ecmd->maxtxpkt = 1;
122         ecmd->maxrxpkt = ug_info->interruptcoalescingmaxvalue[0];
123
124         return phy_ethtool_gset(phydev, ecmd);
125 }
126
127 static int
128 uec_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
129 {
130         struct ucc_geth_private *ugeth = netdev_priv(netdev);
131         struct phy_device *phydev = ugeth->phydev;
132
133         if (!phydev)
134                 return -ENODEV;
135
136         return phy_ethtool_sset(phydev, ecmd);
137 }
138
139 static void
140 uec_get_pauseparam(struct net_device *netdev,
141                      struct ethtool_pauseparam *pause)
142 {
143         struct ucc_geth_private *ugeth = netdev_priv(netdev);
144
145         pause->autoneg = ugeth->phydev->autoneg;
146
147         if (ugeth->ug_info->receiveFlowControl)
148                 pause->rx_pause = 1;
149         if (ugeth->ug_info->transmitFlowControl)
150                 pause->tx_pause = 1;
151 }
152
153 static int
154 uec_set_pauseparam(struct net_device *netdev,
155                      struct ethtool_pauseparam *pause)
156 {
157         struct ucc_geth_private *ugeth = netdev_priv(netdev);
158         int ret = 0;
159
160         ugeth->ug_info->receiveFlowControl = pause->rx_pause;
161         ugeth->ug_info->transmitFlowControl = pause->tx_pause;
162         
163         if (ugeth->phydev->autoneg) {
164                 if (netif_running(netdev)) {
165                         /* FIXME: automatically restart */
166                         printk(KERN_INFO
167                                 "Please re-open the interface.\n");
168                 }
169         } else {
170                 struct ucc_geth_info *ug_info = ugeth->ug_info;
171
172                 ret = init_flow_control_params(ug_info->aufc,
173                                         ug_info->receiveFlowControl,
174                                         ug_info->transmitFlowControl,
175                                         ug_info->pausePeriod,
176                                         ug_info->extensionField,
177                                         &ugeth->uccf->uf_regs->upsmr,
178                                         &ugeth->ug_regs->uempr,
179                                         &ugeth->ug_regs->maccfg1);
180         }
181
182         return ret;
183 }
184
185 static uint32_t
186 uec_get_msglevel(struct net_device *netdev)
187 {
188         struct ucc_geth_private *ugeth = netdev_priv(netdev);
189         return ugeth->msg_enable;
190 }
191
192 static void
193 uec_set_msglevel(struct net_device *netdev, uint32_t data)
194 {
195         struct ucc_geth_private *ugeth = netdev_priv(netdev);
196         ugeth->msg_enable = data;
197 }
198
199 static int
200 uec_get_regs_len(struct net_device *netdev)
201 {
202         return sizeof(struct ucc_geth);
203 }
204
205 static void
206 uec_get_regs(struct net_device *netdev,
207                struct ethtool_regs *regs, void *p)
208 {
209         int i;
210         struct ucc_geth_private *ugeth = netdev_priv(netdev);
211         u32 __iomem *ug_regs = (u32 __iomem *)ugeth->ug_regs;
212         u32 *buff = p;
213
214         for (i = 0; i < sizeof(struct ucc_geth) / sizeof(u32); i++)
215                 buff[i] = in_be32(&ug_regs[i]);
216 }
217
218 static void
219 uec_get_ringparam(struct net_device *netdev,
220                     struct ethtool_ringparam *ring)
221 {
222         struct ucc_geth_private *ugeth = netdev_priv(netdev);
223         struct ucc_geth_info *ug_info = ugeth->ug_info;
224         int queue = 0;
225
226         ring->rx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
227         ring->rx_mini_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
228         ring->rx_jumbo_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
229         ring->tx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
230
231         ring->rx_pending = ug_info->bdRingLenRx[queue];
232         ring->rx_mini_pending = ug_info->bdRingLenRx[queue];
233         ring->rx_jumbo_pending = ug_info->bdRingLenRx[queue];
234         ring->tx_pending = ug_info->bdRingLenTx[queue];
235 }
236
237 static int
238 uec_set_ringparam(struct net_device *netdev,
239                     struct ethtool_ringparam *ring)
240 {
241         struct ucc_geth_private *ugeth = netdev_priv(netdev);
242         struct ucc_geth_info *ug_info = ugeth->ug_info;
243         int queue = 0, ret = 0;
244
245         if (ring->rx_pending < UCC_GETH_RX_BD_RING_SIZE_MIN) {
246                 printk("%s: RxBD ring size must be no smaller than %d.\n",
247                                 netdev->name, UCC_GETH_RX_BD_RING_SIZE_MIN);
248                 return -EINVAL;
249         }
250         if (ring->rx_pending % UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT) {
251                 printk("%s: RxBD ring size must be multiple of %d.\n",
252                         netdev->name, UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT);
253                 return -EINVAL;
254         }
255         if (ring->tx_pending < UCC_GETH_TX_BD_RING_SIZE_MIN) {
256                 printk("%s: TxBD ring size must be no smaller than %d.\n",
257                                 netdev->name, UCC_GETH_TX_BD_RING_SIZE_MIN);
258                 return -EINVAL;
259         }
260
261         ug_info->bdRingLenRx[queue] = ring->rx_pending;
262         ug_info->bdRingLenTx[queue] = ring->tx_pending;
263
264         if (netif_running(netdev)) {
265                 /* FIXME: restart automatically */
266                 printk(KERN_INFO
267                         "Please re-open the interface.\n");
268         }
269
270         return ret;
271 }
272
273 static int uec_get_sset_count(struct net_device *netdev, int sset)
274 {
275         struct ucc_geth_private *ugeth = netdev_priv(netdev);
276         u32 stats_mode = ugeth->ug_info->statisticsMode;
277         int len = 0;
278
279         switch (sset) {
280         case ETH_SS_STATS:
281                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
282                         len += UEC_HW_STATS_LEN;
283                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
284                         len += UEC_TX_FW_STATS_LEN;
285                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
286                         len += UEC_RX_FW_STATS_LEN;
287
288                 return len;
289
290         default:
291                 return -EOPNOTSUPP;
292         }
293 }
294
295 static void uec_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
296 {
297         struct ucc_geth_private *ugeth = netdev_priv(netdev);
298         u32 stats_mode = ugeth->ug_info->statisticsMode;
299
300         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
301                 memcpy(buf, hw_stat_gstrings, UEC_HW_STATS_LEN *
302                                 ETH_GSTRING_LEN);
303                 buf += UEC_HW_STATS_LEN * ETH_GSTRING_LEN;
304         }
305         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
306                 memcpy(buf, tx_fw_stat_gstrings, UEC_TX_FW_STATS_LEN *
307                                 ETH_GSTRING_LEN);
308                 buf += UEC_TX_FW_STATS_LEN * ETH_GSTRING_LEN;
309         }
310         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
311                 memcpy(buf, tx_fw_stat_gstrings, UEC_RX_FW_STATS_LEN *
312                                 ETH_GSTRING_LEN);
313 }
314
315 static void uec_get_ethtool_stats(struct net_device *netdev,
316                 struct ethtool_stats *stats, uint64_t *data)
317 {
318         struct ucc_geth_private *ugeth = netdev_priv(netdev);
319         u32 stats_mode = ugeth->ug_info->statisticsMode;
320         u32 __iomem *base;
321         int i, j = 0;
322
323         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
324                 base = (u32 __iomem *)&ugeth->ug_regs->tx64;
325                 for (i = 0; i < UEC_HW_STATS_LEN; i++)
326                         data[j++] = (u64)in_be32(&base[i]);
327         }
328         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
329                 base = (u32 __iomem *)ugeth->p_tx_fw_statistics_pram;
330                 for (i = 0; i < UEC_TX_FW_STATS_LEN; i++)
331                         data[j++] = (u64)in_be32(&base[i]);
332         }
333         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX) {
334                 base = (u32 __iomem *)ugeth->p_rx_fw_statistics_pram;
335                 for (i = 0; i < UEC_RX_FW_STATS_LEN; i++)
336                         data[j++] = (u64)in_be32(&base[i]);
337         }
338 }
339
340 static int uec_nway_reset(struct net_device *netdev)
341 {
342         struct ucc_geth_private *ugeth = netdev_priv(netdev);
343
344         return phy_start_aneg(ugeth->phydev);
345 }
346
347 /* Report driver information */
348 static void
349 uec_get_drvinfo(struct net_device *netdev,
350                        struct ethtool_drvinfo *drvinfo)
351 {
352         strncpy(drvinfo->driver, DRV_NAME, 32);
353         strncpy(drvinfo->version, DRV_VERSION, 32);
354         strncpy(drvinfo->fw_version, "N/A", 32);
355         strncpy(drvinfo->bus_info, "QUICC ENGINE", 32);
356         drvinfo->eedump_len = 0;
357         drvinfo->regdump_len = uec_get_regs_len(netdev);
358 }
359
360 static const struct ethtool_ops uec_ethtool_ops = {
361         .get_settings           = uec_get_settings,
362         .set_settings           = uec_set_settings,
363         .get_drvinfo            = uec_get_drvinfo,
364         .get_regs_len           = uec_get_regs_len,
365         .get_regs               = uec_get_regs,
366         .get_msglevel           = uec_get_msglevel,
367         .set_msglevel           = uec_set_msglevel,
368         .nway_reset             = uec_nway_reset,
369         .get_link               = ethtool_op_get_link,
370         .get_ringparam          = uec_get_ringparam,
371         .set_ringparam          = uec_set_ringparam,
372         .get_pauseparam         = uec_get_pauseparam,
373         .set_pauseparam         = uec_set_pauseparam,
374         .set_sg                 = ethtool_op_set_sg,
375         .get_sset_count         = uec_get_sset_count,
376         .get_strings            = uec_get_strings,
377         .get_ethtool_stats      = uec_get_ethtool_stats,
378 };
379
380 void uec_set_ethtool_ops(struct net_device *netdev)
381 {
382         SET_ETHTOOL_OPS(netdev, &uec_ethtool_ops);
383 }