Commit | Line | Data |
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7f7f5316 AF |
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 | |
b56d55b6 | 10 | * Maintainer: Kumar Gala (galak@kernel.crashing.org) |
7f7f5316 AF |
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 | ||
7f7f5316 | 22 | #include <linux/kernel.h> |
7f7f5316 AF |
23 | #include <linux/string.h> |
24 | #include <linux/errno.h> | |
25 | #include <linux/unistd.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/delay.h> | |
29 | #include <linux/etherdevice.h> | |
30 | #include <linux/spinlock.h> | |
31 | #include <linux/mm.h> | |
32 | #include <linux/device.h> | |
33 | ||
34 | #include <asm/uaccess.h> | |
35 | #include <linux/module.h> | |
36 | #include <linux/version.h> | |
37 | ||
38 | #include "gianfar.h" | |
39 | ||
4409d281 KG |
40 | static ssize_t gfar_show_bd_stash(struct device *dev, |
41 | struct device_attribute *attr, char *buf) | |
7f7f5316 | 42 | { |
4409d281 | 43 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 | 44 | |
4409d281 | 45 | return sprintf(buf, "%s\n", priv->bd_stash_en ? "on" : "off"); |
7f7f5316 AF |
46 | } |
47 | ||
4409d281 KG |
48 | static ssize_t gfar_set_bd_stash(struct device *dev, |
49 | struct device_attribute *attr, | |
50 | const char *buf, size_t count) | |
7f7f5316 | 51 | { |
4409d281 | 52 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
53 | int new_setting = 0; |
54 | u32 temp; | |
55 | unsigned long flags; | |
56 | ||
57 | /* Find out the new setting */ | |
4409d281 | 58 | if (!strncmp("on", buf, count - 1) || !strncmp("1", buf, count - 1)) |
7f7f5316 | 59 | new_setting = 1; |
4409d281 KG |
60 | else if (!strncmp("off", buf, count - 1) |
61 | || !strncmp("0", buf, count - 1)) | |
7f7f5316 AF |
62 | new_setting = 0; |
63 | else | |
64 | return count; | |
65 | ||
fef6108d | 66 | spin_lock_irqsave(&priv->rxlock, flags); |
7f7f5316 AF |
67 | |
68 | /* Set the new stashing value */ | |
69 | priv->bd_stash_en = new_setting; | |
70 | ||
71 | temp = gfar_read(&priv->regs->attr); | |
6aa20a22 | 72 | |
7f7f5316 AF |
73 | if (new_setting) |
74 | temp |= ATTR_BDSTASH; | |
75 | else | |
76 | temp &= ~(ATTR_BDSTASH); | |
77 | ||
78 | gfar_write(&priv->regs->attr, temp); | |
79 | ||
fef6108d | 80 | spin_unlock_irqrestore(&priv->rxlock, flags); |
7f7f5316 AF |
81 | |
82 | return count; | |
83 | } | |
84 | ||
35a84fdc GL |
85 | DEVICE_ATTR(bd_stash, 0644, gfar_show_bd_stash, gfar_set_bd_stash); |
86 | ||
4409d281 KG |
87 | static ssize_t gfar_show_rx_stash_size(struct device *dev, |
88 | struct device_attribute *attr, char *buf) | |
7f7f5316 | 89 | { |
4409d281 | 90 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
91 | |
92 | return sprintf(buf, "%d\n", priv->rx_stash_size); | |
93 | } | |
94 | ||
4409d281 KG |
95 | static ssize_t gfar_set_rx_stash_size(struct device *dev, |
96 | struct device_attribute *attr, | |
97 | const char *buf, size_t count) | |
7f7f5316 | 98 | { |
4409d281 | 99 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
100 | unsigned int length = simple_strtoul(buf, NULL, 0); |
101 | u32 temp; | |
102 | unsigned long flags; | |
103 | ||
fef6108d | 104 | spin_lock_irqsave(&priv->rxlock, flags); |
7f7f5316 AF |
105 | if (length > priv->rx_buffer_size) |
106 | return count; | |
107 | ||
108 | if (length == priv->rx_stash_size) | |
109 | return count; | |
110 | ||
111 | priv->rx_stash_size = length; | |
112 | ||
113 | temp = gfar_read(&priv->regs->attreli); | |
114 | temp &= ~ATTRELI_EL_MASK; | |
115 | temp |= ATTRELI_EL(length); | |
116 | gfar_write(&priv->regs->attreli, temp); | |
117 | ||
118 | /* Turn stashing on/off as appropriate */ | |
119 | temp = gfar_read(&priv->regs->attr); | |
120 | ||
121 | if (length) | |
122 | temp |= ATTR_BUFSTASH; | |
123 | else | |
124 | temp &= ~(ATTR_BUFSTASH); | |
125 | ||
126 | gfar_write(&priv->regs->attr, temp); | |
127 | ||
fef6108d | 128 | spin_unlock_irqrestore(&priv->rxlock, flags); |
7f7f5316 AF |
129 | |
130 | return count; | |
131 | } | |
132 | ||
35a84fdc GL |
133 | DEVICE_ATTR(rx_stash_size, 0644, gfar_show_rx_stash_size, |
134 | gfar_set_rx_stash_size); | |
135 | ||
7f7f5316 | 136 | /* Stashing will only be enabled when rx_stash_size != 0 */ |
4409d281 KG |
137 | static ssize_t gfar_show_rx_stash_index(struct device *dev, |
138 | struct device_attribute *attr, | |
139 | char *buf) | |
7f7f5316 | 140 | { |
4409d281 | 141 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
142 | |
143 | return sprintf(buf, "%d\n", priv->rx_stash_index); | |
144 | } | |
145 | ||
4409d281 KG |
146 | static ssize_t gfar_set_rx_stash_index(struct device *dev, |
147 | struct device_attribute *attr, | |
148 | const char *buf, size_t count) | |
7f7f5316 | 149 | { |
4409d281 | 150 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
151 | unsigned short index = simple_strtoul(buf, NULL, 0); |
152 | u32 temp; | |
153 | unsigned long flags; | |
154 | ||
fef6108d | 155 | spin_lock_irqsave(&priv->rxlock, flags); |
7f7f5316 AF |
156 | if (index > priv->rx_stash_size) |
157 | return count; | |
158 | ||
159 | if (index == priv->rx_stash_index) | |
160 | return count; | |
161 | ||
162 | priv->rx_stash_index = index; | |
163 | ||
164 | temp = gfar_read(&priv->regs->attreli); | |
165 | temp &= ~ATTRELI_EI_MASK; | |
166 | temp |= ATTRELI_EI(index); | |
167 | gfar_write(&priv->regs->attreli, flags); | |
168 | ||
fef6108d | 169 | spin_unlock_irqrestore(&priv->rxlock, flags); |
7f7f5316 AF |
170 | |
171 | return count; | |
172 | } | |
173 | ||
35a84fdc GL |
174 | DEVICE_ATTR(rx_stash_index, 0644, gfar_show_rx_stash_index, |
175 | gfar_set_rx_stash_index); | |
176 | ||
4409d281 KG |
177 | static ssize_t gfar_show_fifo_threshold(struct device *dev, |
178 | struct device_attribute *attr, | |
179 | char *buf) | |
7f7f5316 | 180 | { |
4409d281 | 181 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
182 | |
183 | return sprintf(buf, "%d\n", priv->fifo_threshold); | |
184 | } | |
185 | ||
4409d281 KG |
186 | static ssize_t gfar_set_fifo_threshold(struct device *dev, |
187 | struct device_attribute *attr, | |
188 | const char *buf, size_t count) | |
7f7f5316 | 189 | { |
4409d281 | 190 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
191 | unsigned int length = simple_strtoul(buf, NULL, 0); |
192 | u32 temp; | |
193 | unsigned long flags; | |
194 | ||
195 | if (length > GFAR_MAX_FIFO_THRESHOLD) | |
196 | return count; | |
197 | ||
fef6108d | 198 | spin_lock_irqsave(&priv->txlock, flags); |
7f7f5316 AF |
199 | |
200 | priv->fifo_threshold = length; | |
201 | ||
202 | temp = gfar_read(&priv->regs->fifo_tx_thr); | |
203 | temp &= ~FIFO_TX_THR_MASK; | |
204 | temp |= length; | |
205 | gfar_write(&priv->regs->fifo_tx_thr, temp); | |
206 | ||
fef6108d | 207 | spin_unlock_irqrestore(&priv->txlock, flags); |
7f7f5316 AF |
208 | |
209 | return count; | |
210 | } | |
211 | ||
35a84fdc GL |
212 | DEVICE_ATTR(fifo_threshold, 0644, gfar_show_fifo_threshold, |
213 | gfar_set_fifo_threshold); | |
214 | ||
4409d281 KG |
215 | static ssize_t gfar_show_fifo_starve(struct device *dev, |
216 | struct device_attribute *attr, char *buf) | |
7f7f5316 | 217 | { |
4409d281 | 218 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
219 | |
220 | return sprintf(buf, "%d\n", priv->fifo_starve); | |
221 | } | |
222 | ||
4409d281 KG |
223 | static ssize_t gfar_set_fifo_starve(struct device *dev, |
224 | struct device_attribute *attr, | |
225 | const char *buf, size_t count) | |
7f7f5316 | 226 | { |
4409d281 | 227 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
228 | unsigned int num = simple_strtoul(buf, NULL, 0); |
229 | u32 temp; | |
230 | unsigned long flags; | |
231 | ||
232 | if (num > GFAR_MAX_FIFO_STARVE) | |
233 | return count; | |
234 | ||
fef6108d | 235 | spin_lock_irqsave(&priv->txlock, flags); |
7f7f5316 AF |
236 | |
237 | priv->fifo_starve = num; | |
238 | ||
239 | temp = gfar_read(&priv->regs->fifo_tx_starve); | |
240 | temp &= ~FIFO_TX_STARVE_MASK; | |
241 | temp |= num; | |
242 | gfar_write(&priv->regs->fifo_tx_starve, temp); | |
243 | ||
fef6108d | 244 | spin_unlock_irqrestore(&priv->txlock, flags); |
7f7f5316 AF |
245 | |
246 | return count; | |
247 | } | |
248 | ||
35a84fdc GL |
249 | DEVICE_ATTR(fifo_starve, 0644, gfar_show_fifo_starve, gfar_set_fifo_starve); |
250 | ||
4409d281 KG |
251 | static ssize_t gfar_show_fifo_starve_off(struct device *dev, |
252 | struct device_attribute *attr, | |
253 | char *buf) | |
7f7f5316 | 254 | { |
4409d281 | 255 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
256 | |
257 | return sprintf(buf, "%d\n", priv->fifo_starve_off); | |
258 | } | |
259 | ||
4409d281 KG |
260 | static ssize_t gfar_set_fifo_starve_off(struct device *dev, |
261 | struct device_attribute *attr, | |
262 | const char *buf, size_t count) | |
7f7f5316 | 263 | { |
4409d281 | 264 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
265 | unsigned int num = simple_strtoul(buf, NULL, 0); |
266 | u32 temp; | |
267 | unsigned long flags; | |
268 | ||
269 | if (num > GFAR_MAX_FIFO_STARVE_OFF) | |
270 | return count; | |
271 | ||
fef6108d | 272 | spin_lock_irqsave(&priv->txlock, flags); |
7f7f5316 AF |
273 | |
274 | priv->fifo_starve_off = num; | |
275 | ||
276 | temp = gfar_read(&priv->regs->fifo_tx_starve_shutoff); | |
277 | temp &= ~FIFO_TX_STARVE_OFF_MASK; | |
278 | temp |= num; | |
279 | gfar_write(&priv->regs->fifo_tx_starve_shutoff, temp); | |
280 | ||
fef6108d | 281 | spin_unlock_irqrestore(&priv->txlock, flags); |
7f7f5316 AF |
282 | |
283 | return count; | |
284 | } | |
285 | ||
35a84fdc GL |
286 | DEVICE_ATTR(fifo_starve_off, 0644, gfar_show_fifo_starve_off, |
287 | gfar_set_fifo_starve_off); | |
288 | ||
7f7f5316 AF |
289 | void gfar_init_sysfs(struct net_device *dev) |
290 | { | |
291 | struct gfar_private *priv = netdev_priv(dev); | |
35a84fdc | 292 | int rc; |
7f7f5316 AF |
293 | |
294 | /* Initialize the default values */ | |
295 | priv->rx_stash_size = DEFAULT_STASH_LENGTH; | |
296 | priv->rx_stash_index = DEFAULT_STASH_INDEX; | |
297 | priv->fifo_threshold = DEFAULT_FIFO_TX_THR; | |
298 | priv->fifo_starve = DEFAULT_FIFO_TX_STARVE; | |
299 | priv->fifo_starve_off = DEFAULT_FIFO_TX_STARVE_OFF; | |
300 | priv->bd_stash_en = DEFAULT_BD_STASH; | |
301 | ||
302 | /* Create our sysfs files */ | |
35a84fdc GL |
303 | rc = device_create_file(&dev->dev, &dev_attr_bd_stash); |
304 | rc |= device_create_file(&dev->dev, &dev_attr_rx_stash_size); | |
305 | rc |= device_create_file(&dev->dev, &dev_attr_rx_stash_index); | |
306 | rc |= device_create_file(&dev->dev, &dev_attr_fifo_threshold); | |
307 | rc |= device_create_file(&dev->dev, &dev_attr_fifo_starve); | |
308 | rc |= device_create_file(&dev->dev, &dev_attr_fifo_starve_off); | |
309 | if (rc) | |
310 | dev_err(&dev->dev, "Error creating gianfar sysfs files.\n"); | |
7f7f5316 | 311 | } |