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
  18 #include "zorro.h"
  19
  20
  21 /* show configuration fields */
  22 #define zorro_config_attr(name, field, format_string)                   \
  23 static ssize_t                                                          \
  24 show_##name(struct device *dev, char *buf)                              \
  25 {                                                                       \
  26         struct zorro_dev *z;                                            \
  27                                                                         \
  28         z = to_zorro_dev(dev);                                          \
  29         return sprintf(buf, format_string, z->field);                   \
  30 }                                                                       \
  31 static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL);
  32
  33 zorro_config_attr(id, id, "0x%08x\n");
  34 zorro_config_attr(type, rom.er_Type, "0x%02x\n");
  35 zorro_config_attr(serial, rom.er_SerialNumber, "0x%08x\n");
  36 zorro_config_attr(slotaddr, slotaddr, "0x%04x\n");
  37 zorro_config_attr(slotsize, slotsize, "0x%04x\n");
  38
  39 static ssize_t zorro_show_resource(struct device *dev, char *buf)
  40 {
  41         struct zorro_dev *z = to_zorro_dev(dev);
  42
  43         return sprintf(buf, "0x%08lx 0x%08lx 0x%08lx\n",
  44                        zorro_resource_start(z), zorro_resource_end(z),
  45                        zorro_resource_flags(z));
  46 }
  47
  48 static DEVICE_ATTR(resource, S_IRUGO, zorro_show_resource, NULL);
  49
  50 static ssize_t zorro_read_config(struct kobject *kobj, char *buf, loff_t off,
  51                                  size_t count)
  52 {
  53         struct zorro_dev *z = to_zorro_dev(container_of(kobj, struct device,
  54                                            kobj));
  55         struct ConfigDev cd;
  56         unsigned int size = sizeof(cd);
  57
  58         if (off > size)
  59                 return 0;
  60         if (off+count > size)
  61                 count = size-off;
  62
  63         /* Construct a ConfigDev */
  64         memset(&cd, 0, sizeof(cd));
  65         cd.cd_Rom = z->rom;
  66         cd.cd_SlotAddr = z->slotaddr;
  67         cd.cd_SlotSize = z->slotsize;
  68         cd.cd_BoardAddr = (void *)zorro_resource_start(z);
  69         cd.cd_BoardSize = zorro_resource_len(z);
  70
  71         memcpy(buf, (void *)&cd+off, count);
  72         return count;
  73 }
  74
  75 static struct bin_attribute zorro_config_attr = {
  76         .attr = {
  77                 .name = "config",
  78                 .mode = S_IRUGO | S_IWUSR,
  79                 .owner = THIS_MODULE
  80         },
  81         .size = sizeof(struct ConfigDev),
  82         .read = zorro_read_config,
  83 };
  84
  85 void zorro_create_sysfs_dev_files(struct zorro_dev *z)
  86 {
  87         struct device *dev = &z->dev;
  88
  89         /* current configuration's attributes */
  90         device_create_file(dev, &dev_attr_id);
  91         device_create_file(dev, &dev_attr_type);
  92         device_create_file(dev, &dev_attr_serial);
  93         device_create_file(dev, &dev_attr_slotaddr);
  94         device_create_file(dev, &dev_attr_slotsize);
  95         device_create_file(dev, &dev_attr_resource);
  96         sysfs_create_bin_file(&dev->kobj, &zorro_config_attr);
  97 }
  98