Root/drivers/ide/ide-disk_proc.c

1#include <linux/kernel.h>
2#include <linux/ide.h>
3#include <linux/slab.h>
4#include <linux/export.h>
5#include <linux/seq_file.h>
6
7#include "ide-disk.h"
8
9static int smart_enable(ide_drive_t *drive)
10{
11    struct ide_cmd cmd;
12    struct ide_taskfile *tf = &cmd.tf;
13
14    memset(&cmd, 0, sizeof(cmd));
15    tf->feature = ATA_SMART_ENABLE;
16    tf->lbam = ATA_SMART_LBAM_PASS;
17    tf->lbah = ATA_SMART_LBAH_PASS;
18    tf->command = ATA_CMD_SMART;
19    cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
20    cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
21
22    return ide_no_data_taskfile(drive, &cmd);
23}
24
25static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd)
26{
27    struct ide_cmd cmd;
28    struct ide_taskfile *tf = &cmd.tf;
29
30    memset(&cmd, 0, sizeof(cmd));
31    tf->feature = sub_cmd;
32    tf->nsect = 0x01;
33    tf->lbam = ATA_SMART_LBAM_PASS;
34    tf->lbah = ATA_SMART_LBAH_PASS;
35    tf->command = ATA_CMD_SMART;
36    cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
37    cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
38    cmd.protocol = ATA_PROT_PIO;
39
40    return ide_raw_taskfile(drive, &cmd, buf, 1);
41}
42
43static int idedisk_cache_proc_show(struct seq_file *m, void *v)
44{
45    ide_drive_t *drive = (ide_drive_t *) m->private;
46
47    if (drive->dev_flags & IDE_DFLAG_ID_READ)
48        seq_printf(m, "%i\n", drive->id[ATA_ID_BUF_SIZE] / 2);
49    else
50        seq_printf(m, "(none)\n");
51    return 0;
52}
53
54static int idedisk_cache_proc_open(struct inode *inode, struct file *file)
55{
56    return single_open(file, idedisk_cache_proc_show, PDE(inode)->data);
57}
58
59static const struct file_operations idedisk_cache_proc_fops = {
60    .owner = THIS_MODULE,
61    .open = idedisk_cache_proc_open,
62    .read = seq_read,
63    .llseek = seq_lseek,
64    .release = single_release,
65};
66
67static int idedisk_capacity_proc_show(struct seq_file *m, void *v)
68{
69    ide_drive_t*drive = (ide_drive_t *)m->private;
70
71    seq_printf(m, "%llu\n", (long long)ide_gd_capacity(drive));
72    return 0;
73}
74
75static int idedisk_capacity_proc_open(struct inode *inode, struct file *file)
76{
77    return single_open(file, idedisk_capacity_proc_show, PDE(inode)->data);
78}
79
80static const struct file_operations idedisk_capacity_proc_fops = {
81    .owner = THIS_MODULE,
82    .open = idedisk_capacity_proc_open,
83    .read = seq_read,
84    .llseek = seq_lseek,
85    .release = single_release,
86};
87
88static int __idedisk_proc_show(struct seq_file *m, ide_drive_t *drive, u8 sub_cmd)
89{
90    u8 *buf;
91
92    buf = kmalloc(SECTOR_SIZE, GFP_KERNEL);
93    if (!buf)
94        return -ENOMEM;
95
96    (void)smart_enable(drive);
97
98    if (get_smart_data(drive, buf, sub_cmd) == 0) {
99        __le16 *val = (__le16 *)buf;
100        int i;
101
102        for (i = 0; i < SECTOR_SIZE / 2; i++) {
103            seq_printf(m, "%04x%c", le16_to_cpu(val[i]),
104                    (i % 8) == 7 ? '\n' : ' ');
105        }
106    }
107    kfree(buf);
108    return 0;
109}
110
111static int idedisk_sv_proc_show(struct seq_file *m, void *v)
112{
113    return __idedisk_proc_show(m, m->private, ATA_SMART_READ_VALUES);
114}
115
116static int idedisk_sv_proc_open(struct inode *inode, struct file *file)
117{
118    return single_open(file, idedisk_sv_proc_show, PDE(inode)->data);
119}
120
121static const struct file_operations idedisk_sv_proc_fops = {
122    .owner = THIS_MODULE,
123    .open = idedisk_sv_proc_open,
124    .read = seq_read,
125    .llseek = seq_lseek,
126    .release = single_release,
127};
128
129static int idedisk_st_proc_show(struct seq_file *m, void *v)
130{
131    return __idedisk_proc_show(m, m->private, ATA_SMART_READ_THRESHOLDS);
132}
133
134static int idedisk_st_proc_open(struct inode *inode, struct file *file)
135{
136    return single_open(file, idedisk_st_proc_show, PDE(inode)->data);
137}
138
139static const struct file_operations idedisk_st_proc_fops = {
140    .owner = THIS_MODULE,
141    .open = idedisk_st_proc_open,
142    .read = seq_read,
143    .llseek = seq_lseek,
144    .release = single_release,
145};
146
147ide_proc_entry_t ide_disk_proc[] = {
148    { "cache", S_IFREG|S_IRUGO, &idedisk_cache_proc_fops },
149    { "capacity", S_IFREG|S_IRUGO, &idedisk_capacity_proc_fops },
150    { "geometry", S_IFREG|S_IRUGO, &ide_geometry_proc_fops },
151    { "smart_values", S_IFREG|S_IRUSR, &idedisk_sv_proc_fops },
152    { "smart_thresholds", S_IFREG|S_IRUSR, &idedisk_st_proc_fops },
153    {}
154};
155
156ide_devset_rw_field(bios_cyl, bios_cyl);
157ide_devset_rw_field(bios_head, bios_head);
158ide_devset_rw_field(bios_sect, bios_sect);
159ide_devset_rw_field(failures, failures);
160ide_devset_rw_field(lun, lun);
161ide_devset_rw_field(max_failures, max_failures);
162
163const struct ide_proc_devset ide_disk_settings[] = {
164    IDE_PROC_DEVSET(acoustic, 0, 254),
165    IDE_PROC_DEVSET(address, 0, 2),
166    IDE_PROC_DEVSET(bios_cyl, 0, 65535),
167    IDE_PROC_DEVSET(bios_head, 0, 255),
168    IDE_PROC_DEVSET(bios_sect, 0, 63),
169    IDE_PROC_DEVSET(failures, 0, 65535),
170    IDE_PROC_DEVSET(lun, 0, 7),
171    IDE_PROC_DEVSET(max_failures, 0, 65535),
172    IDE_PROC_DEVSET(multcount, 0, 16),
173    IDE_PROC_DEVSET(nowerr, 0, 1),
174    IDE_PROC_DEVSET(wcache, 0, 1),
175    { NULL },
176};
177

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