2 * RapidIO sysfs attributes and support
4 * Copyright 2005 MontaVista Software, Inc.
5 * Matt Porter <mporter@kernel.crashing.org>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
13 #include <linux/kernel.h>
14 #include <linux/rio.h>
15 #include <linux/rio_drv.h>
16 #include <linux/stat.h>
21 #define rio_config_attr(field, format_string) \
23 field##_show(struct device *dev, struct device_attribute *attr, char *buf) \
25 struct rio_dev *rdev = to_rio_dev(dev); \
27 return sprintf(buf, format_string, rdev->field); \
30 rio_config_attr(did, "0x%04x\n");
31 rio_config_attr(vid
, "0x%04x\n");
32 rio_config_attr(device_rev
, "0x%08x\n");
33 rio_config_attr(asm_did
, "0x%04x\n");
34 rio_config_attr(asm_vid
, "0x%04x\n");
35 rio_config_attr(asm_rev
, "0x%04x\n");
37 static ssize_t
routes_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
39 struct rio_dev
*rdev
= to_rio_dev(dev
);
46 for (i
= 0; i
< RIO_MAX_ROUTE_ENTRIES
; i
++) {
47 if (rdev
->rswitch
->route_table
[i
] == RIO_INVALID_ROUTE
)
50 sprintf(str
, "%04x %02x\n", i
,
51 rdev
->rswitch
->route_table
[i
]);
58 struct device_attribute rio_dev_attrs
[] = {
61 __ATTR_RO(device_rev
),
70 rio_read_config(struct kobject
*kobj
, char *buf
, loff_t off
, size_t count
)
73 to_rio_dev(container_of(kobj
, struct device
, kobj
));
74 unsigned int size
= 0x100;
75 loff_t init_off
= off
;
76 u8
*data
= (u8
*) buf
;
78 /* Several chips lock up trying to read undefined config space */
79 if (capable(CAP_SYS_ADMIN
))
84 if (off
+ count
> size
) {
91 if ((off
& 1) && size
) {
93 rio_read_config_8(dev
, off
, &val
);
94 data
[off
- init_off
] = val
;
99 if ((off
& 3) && size
> 2) {
101 rio_read_config_16(dev
, off
, &val
);
102 data
[off
- init_off
] = (val
>> 8) & 0xff;
103 data
[off
- init_off
+ 1] = val
& 0xff;
110 rio_read_config_32(dev
, off
, &val
);
111 data
[off
- init_off
] = (val
>> 24) & 0xff;
112 data
[off
- init_off
+ 1] = (val
>> 16) & 0xff;
113 data
[off
- init_off
+ 2] = (val
>> 8) & 0xff;
114 data
[off
- init_off
+ 3] = val
& 0xff;
121 rio_read_config_16(dev
, off
, &val
);
122 data
[off
- init_off
] = (val
>> 8) & 0xff;
123 data
[off
- init_off
+ 1] = val
& 0xff;
130 rio_read_config_8(dev
, off
, &val
);
131 data
[off
- init_off
] = val
;
140 rio_write_config(struct kobject
*kobj
, char *buf
, loff_t off
, size_t count
)
142 struct rio_dev
*dev
=
143 to_rio_dev(container_of(kobj
, struct device
, kobj
));
144 unsigned int size
= count
;
145 loff_t init_off
= off
;
146 u8
*data
= (u8
*) buf
;
150 if (off
+ count
> 0x200000) {
151 size
= 0x200000 - off
;
155 if ((off
& 1) && size
) {
156 rio_write_config_8(dev
, off
, data
[off
- init_off
]);
161 if ((off
& 3) && (size
> 2)) {
162 u16 val
= data
[off
- init_off
+ 1];
163 val
|= (u16
) data
[off
- init_off
] << 8;
164 rio_write_config_16(dev
, off
, val
);
170 u32 val
= data
[off
- init_off
+ 3];
171 val
|= (u32
) data
[off
- init_off
+ 2] << 8;
172 val
|= (u32
) data
[off
- init_off
+ 1] << 16;
173 val
|= (u32
) data
[off
- init_off
] << 24;
174 rio_write_config_32(dev
, off
, val
);
180 u16 val
= data
[off
- init_off
+ 1];
181 val
|= (u16
) data
[off
- init_off
] << 8;
182 rio_write_config_16(dev
, off
, val
);
188 rio_write_config_8(dev
, off
, data
[off
- init_off
]);
196 static struct bin_attribute rio_config_attr
= {
199 .mode
= S_IRUGO
| S_IWUSR
,
202 .read
= rio_read_config
,
203 .write
= rio_write_config
,
207 * rio_create_sysfs_dev_files - create RIO specific sysfs files
208 * @rdev: device whose entries should be created
210 * Create files when @rdev is added to sysfs.
212 int rio_create_sysfs_dev_files(struct rio_dev
*rdev
)
214 sysfs_create_bin_file(&rdev
->dev
.kobj
, &rio_config_attr
);
220 * rio_remove_sysfs_dev_files - cleanup RIO specific sysfs files
221 * @rdev: device whose entries we should free
223 * Cleanup when @rdev is removed from sysfs.
225 void rio_remove_sysfs_dev_files(struct rio_dev
*rdev
)
227 sysfs_remove_bin_file(&rdev
->dev
.kobj
, &rio_config_attr
);