Convert network devices to use struct device instead of class_device
[linux-2.6.git] / drivers / net / gianfar_sysfs.c
1 /*
2  * drivers/net/gianfar_sysfs.c
3  *
4  * Gianfar Ethernet Driver
5  * This driver is designed for the non-CPM ethernet controllers
6  * on the 85xx and 83xx family of integrated processors
7  * Based on 8260_io/fcc_enet.c
8  *
9  * Author: Andy Fleming
10  * Maintainer: Kumar Gala (galak@kernel.crashing.org)
11  *
12  * Copyright (c) 2002-2005 Freescale Semiconductor, Inc.
13  *
14  * This program is free software; you can redistribute  it and/or modify it
15  * under  the terms of  the GNU General  Public License as published by the
16  * Free Software Foundation;  either version 2 of the  License, or (at your
17  * option) any later version.
18  *
19  * Sysfs file creation and management
20  */
21
22 #include <linux/kernel.h>
23 #include <linux/sched.h>
24 #include <linux/string.h>
25 #include <linux/errno.h>
26 #include <linux/unistd.h>
27 #include <linux/slab.h>
28 #include <linux/init.h>
29 #include <linux/delay.h>
30 #include <linux/etherdevice.h>
31 #include <linux/spinlock.h>
32 #include <linux/mm.h>
33 #include <linux/device.h>
34
35 #include <asm/uaccess.h>
36 #include <linux/module.h>
37 #include <linux/version.h>
38
39 #include "gianfar.h"
40
41 #define GFAR_ATTR(_name) \
42 static ssize_t gfar_show_##_name(struct device *dev, \
43          struct device_attribute *attr, char *buf); \
44 static ssize_t gfar_set_##_name(struct device *dev, \
45                 struct device_attribute *attr, \
46                 const char *buf, size_t count); \
47 static DEVICE_ATTR(_name, 0644, gfar_show_##_name, gfar_set_##_name)
48
49 #define GFAR_CREATE_FILE(_dev, _name) \
50         device_create_file(&_dev->dev, &dev_attr_##_name)
51
52 GFAR_ATTR(bd_stash);
53 GFAR_ATTR(rx_stash_size);
54 GFAR_ATTR(rx_stash_index);
55 GFAR_ATTR(fifo_threshold);
56 GFAR_ATTR(fifo_starve);
57 GFAR_ATTR(fifo_starve_off);
58
59 static ssize_t gfar_show_bd_stash(struct device *dev,
60                                   struct device_attribute *attr, char *buf)
61 {
62         struct gfar_private *priv = netdev_priv(to_net_dev(dev));
63
64         return sprintf(buf, "%s\n", priv->bd_stash_en ? "on" : "off");
65 }
66
67 static ssize_t gfar_set_bd_stash(struct device *dev,
68                                  struct device_attribute *attr,
69                                  const char *buf, size_t count)
70 {
71         struct gfar_private *priv = netdev_priv(to_net_dev(dev));
72         int new_setting = 0;
73         u32 temp;
74         unsigned long flags;
75
76         /* Find out the new setting */
77         if (!strncmp("on", buf, count - 1) || !strncmp("1", buf, count - 1))
78                 new_setting = 1;
79         else if (!strncmp("off", buf, count - 1)
80                  || !strncmp("0", buf, count - 1))
81                 new_setting = 0;
82         else
83                 return count;
84
85         spin_lock_irqsave(&priv->rxlock, flags);
86
87         /* Set the new stashing value */
88         priv->bd_stash_en = new_setting;
89
90         temp = gfar_read(&priv->regs->attr);
91
92         if (new_setting)
93                 temp |= ATTR_BDSTASH;
94         else
95                 temp &= ~(ATTR_BDSTASH);
96
97         gfar_write(&priv->regs->attr, temp);
98
99         spin_unlock_irqrestore(&priv->rxlock, flags);
100
101         return count;
102 }
103
104 static ssize_t gfar_show_rx_stash_size(struct device *dev,
105                                        struct device_attribute *attr, char *buf)
106 {
107         struct gfar_private *priv = netdev_priv(to_net_dev(dev));
108
109         return sprintf(buf, "%d\n", priv->rx_stash_size);
110 }
111
112 static ssize_t gfar_set_rx_stash_size(struct device *dev,
113                                       struct device_attribute *attr,
114                                       const char *buf, size_t count)
115 {
116         struct gfar_private *priv = netdev_priv(to_net_dev(dev));
117         unsigned int length = simple_strtoul(buf, NULL, 0);
118         u32 temp;
119         unsigned long flags;
120
121         spin_lock_irqsave(&priv->rxlock, flags);
122         if (length > priv->rx_buffer_size)
123                 return count;
124
125         if (length == priv->rx_stash_size)
126                 return count;
127
128         priv->rx_stash_size = length;
129
130         temp = gfar_read(&priv->regs->attreli);
131         temp &= ~ATTRELI_EL_MASK;
132         temp |= ATTRELI_EL(length);
133         gfar_write(&priv->regs->attreli, temp);
134
135         /* Turn stashing on/off as appropriate */
136         temp = gfar_read(&priv->regs->attr);
137
138         if (length)
139                 temp |= ATTR_BUFSTASH;
140         else
141                 temp &= ~(ATTR_BUFSTASH);
142
143         gfar_write(&priv->regs->attr, temp);
144
145         spin_unlock_irqrestore(&priv->rxlock, flags);
146
147         return count;
148 }
149
150 /* Stashing will only be enabled when rx_stash_size != 0 */
151 static ssize_t gfar_show_rx_stash_index(struct device *dev,
152                                         struct device_attribute *attr,
153                                         char *buf)
154 {
155         struct gfar_private *priv = netdev_priv(to_net_dev(dev));
156
157         return sprintf(buf, "%d\n", priv->rx_stash_index);
158 }
159
160 static ssize_t gfar_set_rx_stash_index(struct device *dev,
161                                        struct device_attribute *attr,
162                                        const char *buf, size_t count)
163 {
164         struct gfar_private *priv = netdev_priv(to_net_dev(dev));
165         unsigned short index = simple_strtoul(buf, NULL, 0);
166         u32 temp;
167         unsigned long flags;
168
169         spin_lock_irqsave(&priv->rxlock, flags);
170         if (index > priv->rx_stash_size)
171                 return count;
172
173         if (index == priv->rx_stash_index)
174                 return count;
175
176         priv->rx_stash_index = index;
177
178         temp = gfar_read(&priv->regs->attreli);
179         temp &= ~ATTRELI_EI_MASK;
180         temp |= ATTRELI_EI(index);
181         gfar_write(&priv->regs->attreli, flags);
182
183         spin_unlock_irqrestore(&priv->rxlock, flags);
184
185         return count;
186 }
187
188 static ssize_t gfar_show_fifo_threshold(struct device *dev,
189                                         struct device_attribute *attr,
190                                         char *buf)
191 {
192         struct gfar_private *priv = netdev_priv(to_net_dev(dev));
193
194         return sprintf(buf, "%d\n", priv->fifo_threshold);
195 }
196
197 static ssize_t gfar_set_fifo_threshold(struct device *dev,
198                                        struct device_attribute *attr,
199                                        const char *buf, size_t count)
200 {
201         struct gfar_private *priv = netdev_priv(to_net_dev(dev));
202         unsigned int length = simple_strtoul(buf, NULL, 0);
203         u32 temp;
204         unsigned long flags;
205
206         if (length > GFAR_MAX_FIFO_THRESHOLD)
207                 return count;
208
209         spin_lock_irqsave(&priv->txlock, flags);
210
211         priv->fifo_threshold = length;
212
213         temp = gfar_read(&priv->regs->fifo_tx_thr);
214         temp &= ~FIFO_TX_THR_MASK;
215         temp |= length;
216         gfar_write(&priv->regs->fifo_tx_thr, temp);
217
218         spin_unlock_irqrestore(&priv->txlock, flags);
219
220         return count;
221 }
222
223 static ssize_t gfar_show_fifo_starve(struct device *dev,
224                                      struct device_attribute *attr, char *buf)
225 {
226         struct gfar_private *priv = netdev_priv(to_net_dev(dev));
227
228         return sprintf(buf, "%d\n", priv->fifo_starve);
229 }
230
231 static ssize_t gfar_set_fifo_starve(struct device *dev,
232                                     struct device_attribute *attr,
233                                     const char *buf, size_t count)
234 {
235         struct gfar_private *priv = netdev_priv(to_net_dev(dev));
236         unsigned int num = simple_strtoul(buf, NULL, 0);
237         u32 temp;
238         unsigned long flags;
239
240         if (num > GFAR_MAX_FIFO_STARVE)
241                 return count;
242
243         spin_lock_irqsave(&priv->txlock, flags);
244
245         priv->fifo_starve = num;
246
247         temp = gfar_read(&priv->regs->fifo_tx_starve);
248         temp &= ~FIFO_TX_STARVE_MASK;
249         temp |= num;
250         gfar_write(&priv->regs->fifo_tx_starve, temp);
251
252         spin_unlock_irqrestore(&priv->txlock, flags);
253
254         return count;
255 }
256
257 static ssize_t gfar_show_fifo_starve_off(struct device *dev,
258                                          struct device_attribute *attr,
259                                          char *buf)
260 {
261         struct gfar_private *priv = netdev_priv(to_net_dev(dev));
262
263         return sprintf(buf, "%d\n", priv->fifo_starve_off);
264 }
265
266 static ssize_t gfar_set_fifo_starve_off(struct device *dev,
267                                         struct device_attribute *attr,
268                                         const char *buf, size_t count)
269 {
270         struct gfar_private *priv = netdev_priv(to_net_dev(dev));
271         unsigned int num = simple_strtoul(buf, NULL, 0);
272         u32 temp;
273         unsigned long flags;
274
275         if (num > GFAR_MAX_FIFO_STARVE_OFF)
276                 return count;
277
278         spin_lock_irqsave(&priv->txlock, flags);
279
280         priv->fifo_starve_off = num;
281
282         temp = gfar_read(&priv->regs->fifo_tx_starve_shutoff);
283         temp &= ~FIFO_TX_STARVE_OFF_MASK;
284         temp |= num;
285         gfar_write(&priv->regs->fifo_tx_starve_shutoff, temp);
286
287         spin_unlock_irqrestore(&priv->txlock, flags);
288
289         return count;
290 }
291
292 void gfar_init_sysfs(struct net_device *dev)
293 {
294         struct gfar_private *priv = netdev_priv(dev);
295
296         /* Initialize the default values */
297         priv->rx_stash_size = DEFAULT_STASH_LENGTH;
298         priv->rx_stash_index = DEFAULT_STASH_INDEX;
299         priv->fifo_threshold = DEFAULT_FIFO_TX_THR;
300         priv->fifo_starve = DEFAULT_FIFO_TX_STARVE;
301         priv->fifo_starve_off = DEFAULT_FIFO_TX_STARVE_OFF;
302         priv->bd_stash_en = DEFAULT_BD_STASH;
303
304         /* Create our sysfs files */
305         GFAR_CREATE_FILE(dev, bd_stash);
306         GFAR_CREATE_FILE(dev, rx_stash_size);
307         GFAR_CREATE_FILE(dev, rx_stash_index);
308         GFAR_CREATE_FILE(dev, fifo_threshold);
309         GFAR_CREATE_FILE(dev, fifo_starve);
310         GFAR_CREATE_FILE(dev, fifo_starve_off);
311
312 }