drivers/zorro/zorro-sysfs.c

   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                                                          \
  27 show_##name(struct device *dev, 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(name, S_IRUGO, show_##name, NULL);
  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
  41 static ssize_t
  42 show_serial(struct device *dev, struct device_attribute *attr, 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
  50 static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);
  51
  52 static ssize_t zorro_show_resource(struct device *dev, struct device_attribute *attr, 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
  62 static DEVICE_ATTR(resource, S_IRUGO, zorro_show_resource, NULL);
  63
  64 static ssize_t zorro_read_config(struct file *filp, struct kobject *kobj,
  65                                  struct bin_attribute *bin_attr,
  66                                  char *buf, loff_t off, size_t count)
  67 {
  68         struct zorro_dev *z = to_zorro_dev(kobj_to_dev(kobj));
  69         struct ConfigDev cd;
  70
  71         /* Construct a ConfigDev */
  72         memset(&cd, 0, sizeof(cd));
  73         cd.cd_Rom = z->rom;
  74         cd.cd_SlotAddr = cpu_to_be16(z->slotaddr);
  75         cd.cd_SlotSize = cpu_to_be16(z->slotsize);
  76         cd.cd_BoardAddr = cpu_to_be32(zorro_resource_start(z));
  77         cd.cd_BoardSize = cpu_to_be32(zorro_resource_len(z));
  78
  79         return memory_read_from_buffer(buf, count, &off, &cd, sizeof(cd));
  80 }
  81
  82 static struct bin_attribute zorro_config_attr = {
  83         .attr = {
  84                 .name = "config",
  85                 .mode = S_IRUGO,
  86         },
  87         .size = sizeof(struct ConfigDev),
  88         .read = zorro_read_config,
  89 };
  90
  91 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
  92                              char *buf)
  93 {
  94         struct zorro_dev *z = to_zorro_dev(dev);
  95
  96         return sprintf(buf, ZORRO_DEVICE_MODALIAS_FMT "\n", z->id);
  97 }
  98
  99 static DEVICE_ATTR(modalias, S_IRUGO, modalias_show, NULL);
 100
 101 int zorro_create_sysfs_dev_files(struct zorro_dev *z)
 102 {
 103         struct device *dev = &z->dev;
 104         int error;
 105
 106         /* current configuration's attributes */
 107         if ((error = device_create_file(dev, &dev_attr_id)) ||
 108             (error = device_create_file(dev, &dev_attr_type)) ||
 109             (error = device_create_file(dev, &dev_attr_serial)) ||
 110             (error = device_create_file(dev, &dev_attr_slotaddr)) ||
 111             (error = device_create_file(dev, &dev_attr_slotsize)) ||
 112             (error = device_create_file(dev, &dev_attr_resource)) ||
 113             (error = device_create_file(dev, &dev_attr_modalias)) ||
 114             (error = sysfs_create_bin_file(&dev->kobj, &zorro_config_attr)))
 115                 return error;
 116
 117         return 0;
 118 }
 119