ksysfs.c (0cce284537fb42d9c28b9b31038ffc9b464555f5) ksysfs.c (f7750a79568788473c5e8092ee58a52248f34329)
1/*
2 * Architecture specific sysfs attributes in /sys/kernel
3 *
4 * Copyright (C) 2007, Intel Corp.
5 * Huang Ying <ying.huang@intel.com>
6 * Copyright (C) 2013, 2013 Red Hat, Inc.
7 * Dave Young <dyoung@redhat.com>
8 *
9 * This file is released under the GPLv2
10 */
11
12#include <linux/kobject.h>
13#include <linux/string.h>
14#include <linux/sysfs.h>
15#include <linux/init.h>
16#include <linux/stat.h>
17#include <linux/slab.h>
18#include <linux/mm.h>
1/*
2 * Architecture specific sysfs attributes in /sys/kernel
3 *
4 * Copyright (C) 2007, Intel Corp.
5 * Huang Ying <ying.huang@intel.com>
6 * Copyright (C) 2013, 2013 Red Hat, Inc.
7 * Dave Young <dyoung@redhat.com>
8 *
9 * This file is released under the GPLv2
10 */
11
12#include <linux/kobject.h>
13#include <linux/string.h>
14#include <linux/sysfs.h>
15#include <linux/init.h>
16#include <linux/stat.h>
17#include <linux/slab.h>
18#include <linux/mm.h>
19#include <linux/io.h>
19
20
20#include <asm/io.h>
21#include <asm/setup.h>
22
23static ssize_t version_show(struct kobject *kobj,
24 struct kobj_attribute *attr, char *buf)
25{
26 return sprintf(buf, "0x%04x\n", boot_params.hdr.version);
27}
28

--- 45 unchanged lines hidden (view full) ---

74 struct setup_data *data;
75 u64 pa_data = boot_params.hdr.setup_data;
76
77 while (pa_data) {
78 if (nr == i) {
79 *paddr = pa_data;
80 return 0;
81 }
21#include <asm/setup.h>
22
23static ssize_t version_show(struct kobject *kobj,
24 struct kobj_attribute *attr, char *buf)
25{
26 return sprintf(buf, "0x%04x\n", boot_params.hdr.version);
27}
28

--- 45 unchanged lines hidden (view full) ---

74 struct setup_data *data;
75 u64 pa_data = boot_params.hdr.setup_data;
76
77 while (pa_data) {
78 if (nr == i) {
79 *paddr = pa_data;
80 return 0;
81 }
82 data = ioremap_cache(pa_data, sizeof(*data));
82 data = memremap(pa_data, sizeof(*data), MEMREMAP_WB);
83 if (!data)
84 return -ENOMEM;
85
86 pa_data = data->next;
83 if (!data)
84 return -ENOMEM;
85
86 pa_data = data->next;
87 iounmap(data);
87 memunmap(data);
88 i++;
89 }
90 return -EINVAL;
91}
92
93static int __init get_setup_data_size(int nr, size_t *size)
94{
95 int i = 0;
96 struct setup_data *data;
97 u64 pa_data = boot_params.hdr.setup_data;
98
99 while (pa_data) {
88 i++;
89 }
90 return -EINVAL;
91}
92
93static int __init get_setup_data_size(int nr, size_t *size)
94{
95 int i = 0;
96 struct setup_data *data;
97 u64 pa_data = boot_params.hdr.setup_data;
98
99 while (pa_data) {
100 data = ioremap_cache(pa_data, sizeof(*data));
100 data = memremap(pa_data, sizeof(*data), MEMREMAP_WB);
101 if (!data)
102 return -ENOMEM;
103 if (nr == i) {
104 *size = data->len;
101 if (!data)
102 return -ENOMEM;
103 if (nr == i) {
104 *size = data->len;
105 iounmap(data);
105 memunmap(data);
106 return 0;
107 }
108
109 pa_data = data->next;
106 return 0;
107 }
108
109 pa_data = data->next;
110 iounmap(data);
110 memunmap(data);
111 i++;
112 }
113 return -EINVAL;
114}
115
116static ssize_t type_show(struct kobject *kobj,
117 struct kobj_attribute *attr, char *buf)
118{
119 int nr, ret;
120 u64 paddr;
121 struct setup_data *data;
122
123 ret = kobj_to_setup_data_nr(kobj, &nr);
124 if (ret)
125 return ret;
126
127 ret = get_setup_data_paddr(nr, &paddr);
128 if (ret)
129 return ret;
111 i++;
112 }
113 return -EINVAL;
114}
115
116static ssize_t type_show(struct kobject *kobj,
117 struct kobj_attribute *attr, char *buf)
118{
119 int nr, ret;
120 u64 paddr;
121 struct setup_data *data;
122
123 ret = kobj_to_setup_data_nr(kobj, &nr);
124 if (ret)
125 return ret;
126
127 ret = get_setup_data_paddr(nr, &paddr);
128 if (ret)
129 return ret;
130 data = ioremap_cache(paddr, sizeof(*data));
130 data = memremap(paddr, sizeof(*data), MEMREMAP_WB);
131 if (!data)
132 return -ENOMEM;
133
134 ret = sprintf(buf, "0x%x\n", data->type);
131 if (!data)
132 return -ENOMEM;
133
134 ret = sprintf(buf, "0x%x\n", data->type);
135 iounmap(data);
135 memunmap(data);
136 return ret;
137}
138
139static ssize_t setup_data_data_read(struct file *fp,
140 struct kobject *kobj,
141 struct bin_attribute *bin_attr,
142 char *buf,
143 loff_t off, size_t count)

--- 5 unchanged lines hidden (view full) ---

149
150 ret = kobj_to_setup_data_nr(kobj, &nr);
151 if (ret)
152 return ret;
153
154 ret = get_setup_data_paddr(nr, &paddr);
155 if (ret)
156 return ret;
136 return ret;
137}
138
139static ssize_t setup_data_data_read(struct file *fp,
140 struct kobject *kobj,
141 struct bin_attribute *bin_attr,
142 char *buf,
143 loff_t off, size_t count)

--- 5 unchanged lines hidden (view full) ---

149
150 ret = kobj_to_setup_data_nr(kobj, &nr);
151 if (ret)
152 return ret;
153
154 ret = get_setup_data_paddr(nr, &paddr);
155 if (ret)
156 return ret;
157 data = ioremap_cache(paddr, sizeof(*data));
157 data = memremap(paddr, sizeof(*data), MEMREMAP_WB);
158 if (!data)
159 return -ENOMEM;
160
161 if (off > data->len) {
162 ret = -EINVAL;
163 goto out;
164 }
165
166 if (count > data->len - off)
167 count = data->len - off;
168
169 if (!count)
170 goto out;
171
172 ret = count;
158 if (!data)
159 return -ENOMEM;
160
161 if (off > data->len) {
162 ret = -EINVAL;
163 goto out;
164 }
165
166 if (count > data->len - off)
167 count = data->len - off;
168
169 if (!count)
170 goto out;
171
172 ret = count;
173 p = ioremap_cache(paddr + sizeof(*data), data->len);
173 p = memremap(paddr + sizeof(*data), data->len, MEMREMAP_WB);
174 if (!p) {
175 ret = -ENOMEM;
176 goto out;
177 }
178 memcpy(buf, p + off, count);
174 if (!p) {
175 ret = -ENOMEM;
176 goto out;
177 }
178 memcpy(buf, p + off, count);
179 iounmap(p);
179 memunmap(p);
180out:
180out:
181 iounmap(data);
181 memunmap(data);
182 return ret;
183}
184
185static struct kobj_attribute type_attr = __ATTR_RO(type);
186
187static struct bin_attribute data_attr __ro_after_init = {
188 .attr = {
189 .name = "data",

--- 55 unchanged lines hidden (view full) ---

245static int __init get_setup_data_total_num(u64 pa_data, int *nr)
246{
247 int ret = 0;
248 struct setup_data *data;
249
250 *nr = 0;
251 while (pa_data) {
252 *nr += 1;
182 return ret;
183}
184
185static struct kobj_attribute type_attr = __ATTR_RO(type);
186
187static struct bin_attribute data_attr __ro_after_init = {
188 .attr = {
189 .name = "data",

--- 55 unchanged lines hidden (view full) ---

245static int __init get_setup_data_total_num(u64 pa_data, int *nr)
246{
247 int ret = 0;
248 struct setup_data *data;
249
250 *nr = 0;
251 while (pa_data) {
252 *nr += 1;
253 data = ioremap_cache(pa_data, sizeof(*data));
253 data = memremap(pa_data, sizeof(*data), MEMREMAP_WB);
254 if (!data) {
255 ret = -ENOMEM;
256 goto out;
257 }
258 pa_data = data->next;
254 if (!data) {
255 ret = -ENOMEM;
256 goto out;
257 }
258 pa_data = data->next;
259 iounmap(data);
259 memunmap(data);
260 }
261
262out:
263 return ret;
264}
265
266static int __init create_setup_data_nodes(struct kobject *parent)
267{

--- 73 unchanged lines hidden --- 		260 }
261
262out:
263 return ret;
264}
265
266static int __init create_setup_data_nodes(struct kobject *parent)
267{

--- 73 unchanged lines hidden ---