Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2#include <linux/kernel.h>
3#include <linux/ide.h>
4#include <linux/slab.h>
5#include <linux/export.h>
6#include <linux/seq_file.h>
7
8#include "ide-disk.h"
9
10static int smart_enable(ide_drive_t *drive)
11{
12 struct ide_cmd cmd;
13 struct ide_taskfile *tf = &cmd.tf;
14
15 memset(&cmd, 0, sizeof(cmd));
16 tf->feature = ATA_SMART_ENABLE;
17 tf->lbam = ATA_SMART_LBAM_PASS;
18 tf->lbah = ATA_SMART_LBAH_PASS;
19 tf->command = ATA_CMD_SMART;
20 cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
21 cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
22
23 return ide_no_data_taskfile(drive, &cmd);
24}
25
26static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd)
27{
28 struct ide_cmd cmd;
29 struct ide_taskfile *tf = &cmd.tf;
30
31 memset(&cmd, 0, sizeof(cmd));
32 tf->feature = sub_cmd;
33 tf->nsect = 0x01;
34 tf->lbam = ATA_SMART_LBAM_PASS;
35 tf->lbah = ATA_SMART_LBAH_PASS;
36 tf->command = ATA_CMD_SMART;
37 cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
38 cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
39 cmd.protocol = ATA_PROT_PIO;
40
41 return ide_raw_taskfile(drive, &cmd, buf, 1);
42}
43
44static int idedisk_cache_proc_show(struct seq_file *m, void *v)
45{
46 ide_drive_t *drive = (ide_drive_t *) m->private;
47
48 if (drive->dev_flags & IDE_DFLAG_ID_READ)
49 seq_printf(m, "%i\n", drive->id[ATA_ID_BUF_SIZE] / 2);
50 else
51 seq_printf(m, "(none)\n");
52 return 0;
53}
54
55static int idedisk_cache_proc_open(struct inode *inode, struct file *file)
56{
57 return single_open(file, idedisk_cache_proc_show, PDE_DATA(inode));
58}
59
60static const struct file_operations idedisk_cache_proc_fops = {
61 .owner = THIS_MODULE,
62 .open = idedisk_cache_proc_open,
63 .read = seq_read,
64 .llseek = seq_lseek,
65 .release = single_release,
66};
67
68static int idedisk_capacity_proc_show(struct seq_file *m, void *v)
69{
70 ide_drive_t*drive = (ide_drive_t *)m->private;
71
72 seq_printf(m, "%llu\n", (long long)ide_gd_capacity(drive));
73 return 0;
74}
75
76static int idedisk_capacity_proc_open(struct inode *inode, struct file *file)
77{
78 return single_open(file, idedisk_capacity_proc_show, PDE_DATA(inode));
79}
80
81static const struct file_operations idedisk_capacity_proc_fops = {
82 .owner = THIS_MODULE,
83 .open = idedisk_capacity_proc_open,
84 .read = seq_read,
85 .llseek = seq_lseek,
86 .release = single_release,
87};
88
89static int __idedisk_proc_show(struct seq_file *m, ide_drive_t *drive, u8 sub_cmd)
90{
91 u8 *buf;
92
93 buf = kmalloc(SECTOR_SIZE, GFP_KERNEL);
94 if (!buf)
95 return -ENOMEM;
96
97 (void)smart_enable(drive);
98
99 if (get_smart_data(drive, buf, sub_cmd) == 0) {
100 __le16 *val = (__le16 *)buf;
101 int i;
102
103 for (i = 0; i < SECTOR_SIZE / 2; i++) {
104 seq_printf(m, "%04x%c", le16_to_cpu(val[i]),
105 (i % 8) == 7 ? '\n' : ' ');
106 }
107 }
108 kfree(buf);
109 return 0;
110}
111
112static int idedisk_sv_proc_show(struct seq_file *m, void *v)
113{
114 return __idedisk_proc_show(m, m->private, ATA_SMART_READ_VALUES);
115}
116
117static int idedisk_sv_proc_open(struct inode *inode, struct file *file)
118{
119 return single_open(file, idedisk_sv_proc_show, PDE_DATA(inode));
120}
121
122static const struct file_operations idedisk_sv_proc_fops = {
123 .owner = THIS_MODULE,
124 .open = idedisk_sv_proc_open,
125 .read = seq_read,
126 .llseek = seq_lseek,
127 .release = single_release,
128};
129
130static int idedisk_st_proc_show(struct seq_file *m, void *v)
131{
132 return __idedisk_proc_show(m, m->private, ATA_SMART_READ_THRESHOLDS);
133}
134
135static int idedisk_st_proc_open(struct inode *inode, struct file *file)
136{
137 return single_open(file, idedisk_st_proc_show, PDE_DATA(inode));
138}
139
140static const struct file_operations idedisk_st_proc_fops = {
141 .owner = THIS_MODULE,
142 .open = idedisk_st_proc_open,
143 .read = seq_read,
144 .llseek = seq_lseek,
145 .release = single_release,
146};
147
148ide_proc_entry_t ide_disk_proc[] = {
149 { "cache", S_IFREG|S_IRUGO, &idedisk_cache_proc_fops },
150 { "capacity", S_IFREG|S_IRUGO, &idedisk_capacity_proc_fops },
151 { "geometry", S_IFREG|S_IRUGO, &ide_geometry_proc_fops },
152 { "smart_values", S_IFREG|S_IRUSR, &idedisk_sv_proc_fops },
153 { "smart_thresholds", S_IFREG|S_IRUSR, &idedisk_st_proc_fops },
154 {}
155};
156
157ide_devset_rw_field(bios_cyl, bios_cyl);
158ide_devset_rw_field(bios_head, bios_head);
159ide_devset_rw_field(bios_sect, bios_sect);
160ide_devset_rw_field(failures, failures);
161ide_devset_rw_field(lun, lun);
162ide_devset_rw_field(max_failures, max_failures);
163
164const struct ide_proc_devset ide_disk_settings[] = {
165 IDE_PROC_DEVSET(acoustic, 0, 254),
166 IDE_PROC_DEVSET(address, 0, 2),
167 IDE_PROC_DEVSET(bios_cyl, 0, 65535),
168 IDE_PROC_DEVSET(bios_head, 0, 255),
169 IDE_PROC_DEVSET(bios_sect, 0, 63),
170 IDE_PROC_DEVSET(failures, 0, 65535),
171 IDE_PROC_DEVSET(lun, 0, 7),
172 IDE_PROC_DEVSET(max_failures, 0, 65535),
173 IDE_PROC_DEVSET(multcount, 0, 16),
174 IDE_PROC_DEVSET(nowerr, 0, 1),
175 IDE_PROC_DEVSET(wcache, 0, 1),
176 { NULL },
177};