Commit | Line | Data |
---|---|---|
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) |
a12f801d | 11 | * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com> |
7f7f5316 | 12 | * |
a12f801d | 13 | * Copyright 2002-2009 Freescale Semiconductor, Inc. |
7f7f5316 AF |
14 | * |
15 | * This program is free software; you can redistribute it and/or modify it | |
16 | * under the terms of the GNU General Public License as published by the | |
17 | * Free Software Foundation; either version 2 of the License, or (at your | |
18 | * option) any later version. | |
19 | * | |
20 | * Sysfs file creation and management | |
21 | */ | |
22 | ||
7f7f5316 | 23 | #include <linux/kernel.h> |
7f7f5316 AF |
24 | #include <linux/string.h> |
25 | #include <linux/errno.h> | |
26 | #include <linux/unistd.h> | |
7f7f5316 AF |
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> | |
7f7f5316 AF |
36 | |
37 | #include "gianfar.h" | |
38 | ||
4409d281 KG |
39 | static ssize_t gfar_show_bd_stash(struct device *dev, |
40 | struct device_attribute *attr, char *buf) | |
7f7f5316 | 41 | { |
4409d281 | 42 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 | 43 | |
4409d281 | 44 | return sprintf(buf, "%s\n", priv->bd_stash_en ? "on" : "off"); |
7f7f5316 AF |
45 | } |
46 | ||
4409d281 KG |
47 | static ssize_t gfar_set_bd_stash(struct device *dev, |
48 | struct device_attribute *attr, | |
49 | const char *buf, size_t count) | |
7f7f5316 | 50 | { |
4409d281 | 51 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
46ceb60c | 52 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
7f7f5316 AF |
53 | int new_setting = 0; |
54 | u32 temp; | |
55 | unsigned long flags; | |
56 | ||
4d7902f2 AF |
57 | if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_BD_STASHING)) |
58 | return count; | |
59 | ||
a12f801d | 60 | |
7f7f5316 | 61 | /* Find out the new setting */ |
4409d281 | 62 | if (!strncmp("on", buf, count - 1) || !strncmp("1", buf, count - 1)) |
7f7f5316 | 63 | new_setting = 1; |
8e95a202 JP |
64 | else if (!strncmp("off", buf, count - 1) || |
65 | !strncmp("0", buf, count - 1)) | |
7f7f5316 AF |
66 | new_setting = 0; |
67 | else | |
68 | return count; | |
69 | ||
fba4ed03 SG |
70 | |
71 | local_irq_save(flags); | |
72 | lock_rx_qs(priv); | |
7f7f5316 AF |
73 | |
74 | /* Set the new stashing value */ | |
75 | priv->bd_stash_en = new_setting; | |
76 | ||
f4983704 | 77 | temp = gfar_read(®s->attr); |
6aa20a22 | 78 | |
7f7f5316 AF |
79 | if (new_setting) |
80 | temp |= ATTR_BDSTASH; | |
81 | else | |
82 | temp &= ~(ATTR_BDSTASH); | |
83 | ||
f4983704 | 84 | gfar_write(®s->attr, temp); |
7f7f5316 | 85 | |
fba4ed03 SG |
86 | unlock_rx_qs(priv); |
87 | local_irq_restore(flags); | |
7f7f5316 AF |
88 | |
89 | return count; | |
90 | } | |
91 | ||
b2f66d18 | 92 | static DEVICE_ATTR(bd_stash, 0644, gfar_show_bd_stash, gfar_set_bd_stash); |
35a84fdc | 93 | |
4409d281 KG |
94 | static ssize_t gfar_show_rx_stash_size(struct device *dev, |
95 | struct device_attribute *attr, char *buf) | |
7f7f5316 | 96 | { |
4409d281 | 97 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
98 | |
99 | return sprintf(buf, "%d\n", priv->rx_stash_size); | |
100 | } | |
101 | ||
4409d281 KG |
102 | static ssize_t gfar_set_rx_stash_size(struct device *dev, |
103 | struct device_attribute *attr, | |
104 | const char *buf, size_t count) | |
7f7f5316 | 105 | { |
4409d281 | 106 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
46ceb60c | 107 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
7f7f5316 AF |
108 | unsigned int length = simple_strtoul(buf, NULL, 0); |
109 | u32 temp; | |
110 | unsigned long flags; | |
111 | ||
4d7902f2 AF |
112 | if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_BUF_STASHING)) |
113 | return count; | |
114 | ||
fba4ed03 SG |
115 | local_irq_save(flags); |
116 | lock_rx_qs(priv); | |
a12f801d | 117 | |
7f7f5316 | 118 | if (length > priv->rx_buffer_size) |
f162b9d5 | 119 | goto out; |
7f7f5316 AF |
120 | |
121 | if (length == priv->rx_stash_size) | |
f162b9d5 | 122 | goto out; |
7f7f5316 AF |
123 | |
124 | priv->rx_stash_size = length; | |
125 | ||
f4983704 | 126 | temp = gfar_read(®s->attreli); |
7f7f5316 AF |
127 | temp &= ~ATTRELI_EL_MASK; |
128 | temp |= ATTRELI_EL(length); | |
f4983704 | 129 | gfar_write(®s->attreli, temp); |
7f7f5316 AF |
130 | |
131 | /* Turn stashing on/off as appropriate */ | |
f4983704 | 132 | temp = gfar_read(®s->attr); |
7f7f5316 AF |
133 | |
134 | if (length) | |
135 | temp |= ATTR_BUFSTASH; | |
136 | else | |
137 | temp &= ~(ATTR_BUFSTASH); | |
138 | ||
f4983704 | 139 | gfar_write(®s->attr, temp); |
7f7f5316 | 140 | |
f162b9d5 | 141 | out: |
fba4ed03 SG |
142 | unlock_rx_qs(priv); |
143 | local_irq_restore(flags); | |
7f7f5316 AF |
144 | |
145 | return count; | |
146 | } | |
147 | ||
b2f66d18 AV |
148 | static DEVICE_ATTR(rx_stash_size, 0644, gfar_show_rx_stash_size, |
149 | gfar_set_rx_stash_size); | |
35a84fdc | 150 | |
7f7f5316 | 151 | /* Stashing will only be enabled when rx_stash_size != 0 */ |
4409d281 KG |
152 | static ssize_t gfar_show_rx_stash_index(struct device *dev, |
153 | struct device_attribute *attr, | |
154 | char *buf) | |
7f7f5316 | 155 | { |
4409d281 | 156 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
157 | |
158 | return sprintf(buf, "%d\n", priv->rx_stash_index); | |
159 | } | |
160 | ||
4409d281 KG |
161 | static ssize_t gfar_set_rx_stash_index(struct device *dev, |
162 | struct device_attribute *attr, | |
163 | const char *buf, size_t count) | |
7f7f5316 | 164 | { |
4409d281 | 165 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
46ceb60c | 166 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
7f7f5316 AF |
167 | unsigned short index = simple_strtoul(buf, NULL, 0); |
168 | u32 temp; | |
169 | unsigned long flags; | |
170 | ||
4d7902f2 AF |
171 | if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_BUF_STASHING)) |
172 | return count; | |
173 | ||
fba4ed03 SG |
174 | local_irq_save(flags); |
175 | lock_rx_qs(priv); | |
a12f801d | 176 | |
7f7f5316 | 177 | if (index > priv->rx_stash_size) |
f162b9d5 | 178 | goto out; |
7f7f5316 AF |
179 | |
180 | if (index == priv->rx_stash_index) | |
f162b9d5 | 181 | goto out; |
7f7f5316 AF |
182 | |
183 | priv->rx_stash_index = index; | |
184 | ||
f4983704 | 185 | temp = gfar_read(®s->attreli); |
7f7f5316 AF |
186 | temp &= ~ATTRELI_EI_MASK; |
187 | temp |= ATTRELI_EI(index); | |
499428ed | 188 | gfar_write(®s->attreli, temp); |
7f7f5316 | 189 | |
f162b9d5 | 190 | out: |
fba4ed03 SG |
191 | unlock_rx_qs(priv); |
192 | local_irq_restore(flags); | |
7f7f5316 AF |
193 | |
194 | return count; | |
195 | } | |
196 | ||
b2f66d18 AV |
197 | static DEVICE_ATTR(rx_stash_index, 0644, gfar_show_rx_stash_index, |
198 | gfar_set_rx_stash_index); | |
35a84fdc | 199 | |
4409d281 KG |
200 | static ssize_t gfar_show_fifo_threshold(struct device *dev, |
201 | struct device_attribute *attr, | |
202 | char *buf) | |
7f7f5316 | 203 | { |
4409d281 | 204 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
205 | |
206 | return sprintf(buf, "%d\n", priv->fifo_threshold); | |
207 | } | |
208 | ||
4409d281 KG |
209 | static ssize_t gfar_set_fifo_threshold(struct device *dev, |
210 | struct device_attribute *attr, | |
211 | const char *buf, size_t count) | |
7f7f5316 | 212 | { |
4409d281 | 213 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
46ceb60c | 214 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
7f7f5316 AF |
215 | unsigned int length = simple_strtoul(buf, NULL, 0); |
216 | u32 temp; | |
217 | unsigned long flags; | |
218 | ||
219 | if (length > GFAR_MAX_FIFO_THRESHOLD) | |
220 | return count; | |
221 | ||
fba4ed03 SG |
222 | local_irq_save(flags); |
223 | lock_tx_qs(priv); | |
7f7f5316 AF |
224 | |
225 | priv->fifo_threshold = length; | |
226 | ||
f4983704 | 227 | temp = gfar_read(®s->fifo_tx_thr); |
7f7f5316 AF |
228 | temp &= ~FIFO_TX_THR_MASK; |
229 | temp |= length; | |
f4983704 | 230 | gfar_write(®s->fifo_tx_thr, temp); |
7f7f5316 | 231 | |
fba4ed03 SG |
232 | unlock_tx_qs(priv); |
233 | local_irq_restore(flags); | |
7f7f5316 AF |
234 | |
235 | return count; | |
236 | } | |
237 | ||
b2f66d18 AV |
238 | static DEVICE_ATTR(fifo_threshold, 0644, gfar_show_fifo_threshold, |
239 | gfar_set_fifo_threshold); | |
35a84fdc | 240 | |
4409d281 KG |
241 | static ssize_t gfar_show_fifo_starve(struct device *dev, |
242 | struct device_attribute *attr, char *buf) | |
7f7f5316 | 243 | { |
4409d281 | 244 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
245 | |
246 | return sprintf(buf, "%d\n", priv->fifo_starve); | |
247 | } | |
248 | ||
4409d281 KG |
249 | static ssize_t gfar_set_fifo_starve(struct device *dev, |
250 | struct device_attribute *attr, | |
251 | const char *buf, size_t count) | |
7f7f5316 | 252 | { |
4409d281 | 253 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
46ceb60c | 254 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
7f7f5316 AF |
255 | unsigned int num = simple_strtoul(buf, NULL, 0); |
256 | u32 temp; | |
257 | unsigned long flags; | |
258 | ||
259 | if (num > GFAR_MAX_FIFO_STARVE) | |
260 | return count; | |
261 | ||
fba4ed03 SG |
262 | local_irq_save(flags); |
263 | lock_tx_qs(priv); | |
7f7f5316 AF |
264 | |
265 | priv->fifo_starve = num; | |
266 | ||
f4983704 | 267 | temp = gfar_read(®s->fifo_tx_starve); |
7f7f5316 AF |
268 | temp &= ~FIFO_TX_STARVE_MASK; |
269 | temp |= num; | |
f4983704 | 270 | gfar_write(®s->fifo_tx_starve, temp); |
7f7f5316 | 271 | |
fba4ed03 SG |
272 | unlock_tx_qs(priv); |
273 | local_irq_restore(flags); | |
7f7f5316 AF |
274 | |
275 | return count; | |
276 | } | |
277 | ||
b2f66d18 AV |
278 | static DEVICE_ATTR(fifo_starve, 0644, gfar_show_fifo_starve, |
279 | gfar_set_fifo_starve); | |
35a84fdc | 280 | |
4409d281 KG |
281 | static ssize_t gfar_show_fifo_starve_off(struct device *dev, |
282 | struct device_attribute *attr, | |
283 | char *buf) | |
7f7f5316 | 284 | { |
4409d281 | 285 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
7f7f5316 AF |
286 | |
287 | return sprintf(buf, "%d\n", priv->fifo_starve_off); | |
288 | } | |
289 | ||
4409d281 KG |
290 | static ssize_t gfar_set_fifo_starve_off(struct device *dev, |
291 | struct device_attribute *attr, | |
292 | const char *buf, size_t count) | |
7f7f5316 | 293 | { |
4409d281 | 294 | struct gfar_private *priv = netdev_priv(to_net_dev(dev)); |
46ceb60c | 295 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
7f7f5316 AF |
296 | unsigned int num = simple_strtoul(buf, NULL, 0); |
297 | u32 temp; | |
298 | unsigned long flags; | |
299 | ||
300 | if (num > GFAR_MAX_FIFO_STARVE_OFF) | |
301 | return count; | |
302 | ||
fba4ed03 SG |
303 | local_irq_save(flags); |
304 | lock_tx_qs(priv); | |
7f7f5316 AF |
305 | |
306 | priv->fifo_starve_off = num; | |
307 | ||
f4983704 | 308 | temp = gfar_read(®s->fifo_tx_starve_shutoff); |
7f7f5316 AF |
309 | temp &= ~FIFO_TX_STARVE_OFF_MASK; |
310 | temp |= num; | |
f4983704 | 311 | gfar_write(®s->fifo_tx_starve_shutoff, temp); |
7f7f5316 | 312 | |
fba4ed03 SG |
313 | unlock_tx_qs(priv); |
314 | local_irq_restore(flags); | |
7f7f5316 AF |
315 | |
316 | return count; | |
317 | } | |
318 | ||
b2f66d18 AV |
319 | static DEVICE_ATTR(fifo_starve_off, 0644, gfar_show_fifo_starve_off, |
320 | gfar_set_fifo_starve_off); | |
35a84fdc | 321 | |
7f7f5316 AF |
322 | void gfar_init_sysfs(struct net_device *dev) |
323 | { | |
324 | struct gfar_private *priv = netdev_priv(dev); | |
35a84fdc | 325 | int rc; |
7f7f5316 AF |
326 | |
327 | /* Initialize the default values */ | |
7f7f5316 AF |
328 | priv->fifo_threshold = DEFAULT_FIFO_TX_THR; |
329 | priv->fifo_starve = DEFAULT_FIFO_TX_STARVE; | |
330 | priv->fifo_starve_off = DEFAULT_FIFO_TX_STARVE_OFF; | |
7f7f5316 AF |
331 | |
332 | /* Create our sysfs files */ | |
35a84fdc GL |
333 | rc = device_create_file(&dev->dev, &dev_attr_bd_stash); |
334 | rc |= device_create_file(&dev->dev, &dev_attr_rx_stash_size); | |
335 | rc |= device_create_file(&dev->dev, &dev_attr_rx_stash_index); | |
336 | rc |= device_create_file(&dev->dev, &dev_attr_fifo_threshold); | |
337 | rc |= device_create_file(&dev->dev, &dev_attr_fifo_starve); | |
338 | rc |= device_create_file(&dev->dev, &dev_attr_fifo_starve_off); | |
339 | if (rc) | |
340 | dev_err(&dev->dev, "Error creating gianfar sysfs files.\n"); | |
7f7f5316 | 341 | } |