xref: /openbmc/linux/drivers/zorro/zorro-sysfs.c (revision 87e715de)
1 /*
2  *  File Attributes for Zorro Devices
3  *
4  *  Copyright (C) 2003 Geert Uytterhoeven
5  *
6  *  Loosely based on drivers/pci/pci-sysfs.c
7  *
8  *  This file is subject to the terms and conditions of the GNU General Public
9  *  License.  See the file COPYING in the main directory of this archive
10  *  for more details.
11  */
12 
13 
14 #include <linux/kernel.h>
15 #include <linux/zorro.h>
16 #include <linux/stat.h>
17 #include <linux/string.h>
18 
19 #include <asm/byteorder.h>
20 
21 #include "zorro.h"
22 
23 
24 /* show configuration fields */
25 #define zorro_config_attr(name, field, format_string)			\
26 static ssize_t name##_show(struct device *dev,				\
27 			   struct device_attribute *attr, char *buf)	\
28 {									\
29 	struct zorro_dev *z;						\
30 									\
31 	z = to_zorro_dev(dev);						\
32 	return sprintf(buf, format_string, z->field);			\
33 }									\
34 static DEVICE_ATTR_RO(name);
35 
36 zorro_config_attr(id, id, "0x%08x\n");
37 zorro_config_attr(type, rom.er_Type, "0x%02x\n");
38 zorro_config_attr(slotaddr, slotaddr, "0x%04x\n");
39 zorro_config_attr(slotsize, slotsize, "0x%04x\n");
40 
serial_show(struct device * dev,struct device_attribute * attr,char * buf)41 static ssize_t serial_show(struct device *dev, struct device_attribute *attr,
42 			   char *buf)
43 {
44 	struct zorro_dev *z;
45 
46 	z = to_zorro_dev(dev);
47 	return sprintf(buf, "0x%08x\n", be32_to_cpu(z->rom.er_SerialNumber));
48 }
49 static DEVICE_ATTR_RO(serial);
50 
resource_show(struct device * dev,struct device_attribute * attr,char * buf)51 static ssize_t resource_show(struct device *dev, struct device_attribute *attr,
52 			     char *buf)
53 {
54 	struct zorro_dev *z = to_zorro_dev(dev);
55 
56 	return sprintf(buf, "0x%08lx 0x%08lx 0x%08lx\n",
57 		       (unsigned long)zorro_resource_start(z),
58 		       (unsigned long)zorro_resource_end(z),
59 		       zorro_resource_flags(z));
60 }
61 static DEVICE_ATTR_RO(resource);
62 
modalias_show(struct device * dev,struct device_attribute * attr,char * buf)63 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
64 			     char *buf)
65 {
66 	struct zorro_dev *z = to_zorro_dev(dev);
67 
68 	return sprintf(buf, ZORRO_DEVICE_MODALIAS_FMT "\n", z->id);
69 }
70 static DEVICE_ATTR_RO(modalias);
71 
72 static struct attribute *zorro_device_attrs[] = {
73 	&dev_attr_id.attr,
74 	&dev_attr_type.attr,
75 	&dev_attr_serial.attr,
76 	&dev_attr_slotaddr.attr,
77 	&dev_attr_slotsize.attr,
78 	&dev_attr_resource.attr,
79 	&dev_attr_modalias.attr,
80 	NULL
81 };
82 
zorro_read_config(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t off,size_t count)83 static ssize_t zorro_read_config(struct file *filp, struct kobject *kobj,
84 				 struct bin_attribute *bin_attr,
85 				 char *buf, loff_t off, size_t count)
86 {
87 	struct zorro_dev *z = to_zorro_dev(kobj_to_dev(kobj));
88 	struct ConfigDev cd;
89 
90 	/* Construct a ConfigDev */
91 	memset(&cd, 0, sizeof(cd));
92 	cd.cd_Rom = z->rom;
93 	cd.cd_SlotAddr = cpu_to_be16(z->slotaddr);
94 	cd.cd_SlotSize = cpu_to_be16(z->slotsize);
95 	cd.cd_BoardAddr = cpu_to_be32(zorro_resource_start(z));
96 	cd.cd_BoardSize = cpu_to_be32(zorro_resource_len(z));
97 
98 	return memory_read_from_buffer(buf, count, &off, &cd, sizeof(cd));
99 }
100 
101 static struct bin_attribute zorro_config_attr = {
102 	.attr =	{
103 		.name = "config",
104 		.mode = S_IRUGO,
105 	},
106 	.size = sizeof(struct ConfigDev),
107 	.read = zorro_read_config,
108 };
109 
110 static struct bin_attribute *zorro_device_bin_attrs[] = {
111 	&zorro_config_attr,
112 	NULL
113 };
114 
115 static const struct attribute_group zorro_device_attr_group = {
116 	.attrs		= zorro_device_attrs,
117 	.bin_attrs	= zorro_device_bin_attrs,
118 };
119 
120 const struct attribute_group *zorro_device_attribute_groups[] = {
121 	&zorro_device_attr_group,
122 	NULL
123 };
124