Linux kernel & device driver programming

Cross-Referenced Linux and Device Driver Code

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ]
Version: [ 2.6.11.8 ] [ 2.6.25 ] [ 2.6.25.8 ] [ 2.6.31.13 ] Architecture: [ i386 ]
  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 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 int zorro_create_sysfs_dev_files(struct zorro_dev *z)
 81 {
 82         struct device *dev = &z->dev;
 83         int error;
 84 
 85         /* current configuration's attributes */
 86         if ((error = device_create_file(dev, &dev_attr_id)) ||
 87             (error = device_create_file(dev, &dev_attr_type)) ||
 88             (error = device_create_file(dev, &dev_attr_serial)) ||
 89             (error = device_create_file(dev, &dev_attr_slotaddr)) ||
 90             (error = device_create_file(dev, &dev_attr_slotsize)) ||
 91             (error = device_create_file(dev, &dev_attr_resource)) ||
 92             (error = sysfs_create_bin_file(&dev->kobj, &zorro_config_attr)))
 93                 return error;
 94 
 95         return 0;
 96 }
 97 
 98 
  This page was automatically generated by the LXR engine.