cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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zorro-sysfs.c (3193B)

      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)			\
     26static 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}									\
     34static DEVICE_ATTR_RO(name);
     35
     36zorro_config_attr(id, id, "0x%08x\n");
     37zorro_config_attr(type, rom.er_Type, "0x%02x\n");
     38zorro_config_attr(slotaddr, slotaddr, "0x%04x\n");
     39zorro_config_attr(slotsize, slotsize, "0x%04x\n");
     40
     41static 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}
     49static DEVICE_ATTR_RO(serial);
     50
     51static 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}
     61static DEVICE_ATTR_RO(resource);
     62
     63static 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}
     70static DEVICE_ATTR_RO(modalias);
     71
     72static 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
     83static 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
    101static 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
    110static struct bin_attribute *zorro_device_bin_attrs[] = {
    111	&zorro_config_attr,
    112	NULL
    113};
    114
    115static const struct attribute_group zorro_device_attr_group = {
    116	.attrs		= zorro_device_attrs,
    117	.bin_attrs	= zorro_device_bin_attrs,
    118};
    119
    120const struct attribute_group *zorro_device_attribute_groups[] = {
    121	&zorro_device_attr_group,
    122	NULL
    123};