release/src-rt-6.x.4708/linux/linux-2.6.36/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 "zorro.h"
  20
  21
  22 /* show configuration fields */
  23 #define zorro_config_attr(name, field, format_string)                   \
  24 static ssize_t                                                          \
  25 show_##name(struct device *dev, struct device_attribute *attr, char *buf)                               \
  26 {                                                                       \
  27         struct zorro_dev *z;                                            \
  28                                                                         \
  29         z = to_zorro_dev(dev);                                          \
  30         return sprintf(buf, format_string, z->field);                   \
  31 }                                                                       \
  32 static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL);
  33
  34 zorro_config_attr(id, id, "0x%08x\n");
  35 zorro_config_attr(type, rom.er_Type, "0x%02x\n");
  36 zorro_config_attr(serial, rom.er_SerialNumber, "0x%08x\n");
  37 zorro_config_attr(slotaddr, slotaddr, "0x%04x\n");
  38 zorro_config_attr(slotsize, slotsize, "0x%04x\n");
  39
  40 static ssize_t zorro_show_resource(struct device *dev, struct device_attribute *attr, char *buf)
  41 {
  42         struct zorro_dev *z = to_zorro_dev(dev);
  43
  44         return sprintf(buf, "0x%08lx 0x%08lx 0x%08lx\n",
  45                        (unsigned long)zorro_resource_start(z),
  46                        (unsigned long)zorro_resource_end(z),
  47                        zorro_resource_flags(z));
  48 }
  49
  50 static DEVICE_ATTR(resource, S_IRUGO, zorro_show_resource, NULL);
  51
  52 static ssize_t zorro_read_config(struct file *filp, struct kobject *kobj,
  53                                  struct bin_attribute *bin_attr,
  54                                  char *buf, loff_t off, size_t count)
  55 {
  56         struct zorro_dev *z = to_zorro_dev(container_of(kobj, struct device,
  57                                            kobj));
  58         struct ConfigDev cd;
  59
  60         /* Construct a ConfigDev */
  61         memset(&cd, 0, sizeof(cd));
  62         cd.cd_Rom = z->rom;
  63         cd.cd_SlotAddr = z->slotaddr;
  64         cd.cd_SlotSize = z->slotsize;
  65         cd.cd_BoardAddr = (void *)zorro_resource_start(z);
  66         cd.cd_BoardSize = zorro_resource_len(z);
  67
  68         return memory_read_from_buffer(buf, count, &off, &cd, sizeof(cd));
  69 }
  70
  71 static struct bin_attribute zorro_config_attr = {
  72         .attr = {
  73                 .name = "config",
  74                 .mode = S_IRUGO,
  75         },
  76         .size = sizeof(struct ConfigDev),
  77         .read = zorro_read_config,
  78 };
  79
  80 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
  81                              char *buf)
  82 {
  83         struct zorro_dev *z = to_zorro_dev(dev);
  84
  85         return sprintf(buf, ZORRO_DEVICE_MODALIAS_FMT "\n", z->id);
  86 }
  87
  88 static DEVICE_ATTR(modalias, S_IRUGO, modalias_show, NULL);
  89
  90 int zorro_create_sysfs_dev_files(struct zorro_dev *z)
  91 {
  92         struct device *dev = &z->dev;
  93         int error;
  94
  95         /* current configuration's attributes */
  96         if ((error = device_create_file(dev, &dev_attr_id)) ||
  97             (error = device_create_file(dev, &dev_attr_type)) ||
  98             (error = device_create_file(dev, &dev_attr_serial)) ||
  99             (error = device_create_file(dev, &dev_attr_slotaddr)) ||
 100             (error = device_create_file(dev, &dev_attr_slotsize)) ||
 101             (error = device_create_file(dev, &dev_attr_resource)) ||
 102             (error = device_create_file(dev, &dev_attr_modalias)) ||
 103             (error = sysfs_create_bin_file(&dev->kobj, &zorro_config_attr)))
 104                 return error;
 105
 106         return 0;
 107 }