Merge tag 'riscv-for-linus-5.2-mw2' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-2.6-microblaze.git] / drivers / ide / ide-disk_proc.c
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
10 static 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
26 static 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
44 static 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
55 static int idedisk_capacity_proc_show(struct seq_file *m, void *v)
56 {
57         ide_drive_t*drive = (ide_drive_t *)m->private;
58
59         seq_printf(m, "%llu\n", (long long)ide_gd_capacity(drive));
60         return 0;
61 }
62
63 static int __idedisk_proc_show(struct seq_file *m, ide_drive_t *drive, u8 sub_cmd)
64 {
65         u8 *buf;
66
67         buf = kmalloc(SECTOR_SIZE, GFP_KERNEL);
68         if (!buf)
69                 return -ENOMEM;
70
71         (void)smart_enable(drive);
72
73         if (get_smart_data(drive, buf, sub_cmd) == 0) {
74                 __le16 *val = (__le16 *)buf;
75                 int i;
76
77                 for (i = 0; i < SECTOR_SIZE / 2; i++) {
78                         seq_printf(m, "%04x%c", le16_to_cpu(val[i]),
79                                         (i % 8) == 7 ? '\n' : ' ');
80                 }
81         }
82         kfree(buf);
83         return 0;
84 }
85
86 static int idedisk_sv_proc_show(struct seq_file *m, void *v)
87 {
88         return __idedisk_proc_show(m, m->private, ATA_SMART_READ_VALUES);
89 }
90
91 static int idedisk_st_proc_show(struct seq_file *m, void *v)
92 {
93         return __idedisk_proc_show(m, m->private, ATA_SMART_READ_THRESHOLDS);
94 }
95
96 ide_proc_entry_t ide_disk_proc[] = {
97         { "cache",        S_IFREG|S_IRUGO, idedisk_cache_proc_show      },
98         { "capacity",     S_IFREG|S_IRUGO, idedisk_capacity_proc_show   },
99         { "geometry",     S_IFREG|S_IRUGO, ide_geometry_proc_show       },
100         { "smart_values", S_IFREG|S_IRUSR, idedisk_sv_proc_show         },
101         { "smart_thresholds", S_IFREG|S_IRUSR, idedisk_st_proc_show     },
102         {}
103 };
104
105 ide_devset_rw_field(bios_cyl, bios_cyl);
106 ide_devset_rw_field(bios_head, bios_head);
107 ide_devset_rw_field(bios_sect, bios_sect);
108 ide_devset_rw_field(failures, failures);
109 ide_devset_rw_field(lun, lun);
110 ide_devset_rw_field(max_failures, max_failures);
111
112 const struct ide_proc_devset ide_disk_settings[] = {
113         IDE_PROC_DEVSET(acoustic,       0,   254),
114         IDE_PROC_DEVSET(address,        0,     2),
115         IDE_PROC_DEVSET(bios_cyl,       0, 65535),
116         IDE_PROC_DEVSET(bios_head,      0,   255),
117         IDE_PROC_DEVSET(bios_sect,      0,    63),
118         IDE_PROC_DEVSET(failures,       0, 65535),
119         IDE_PROC_DEVSET(lun,            0,     7),
120         IDE_PROC_DEVSET(max_failures,   0, 65535),
121         IDE_PROC_DEVSET(multcount,      0,    16),
122         IDE_PROC_DEVSET(nowerr,         0,     1),
123         IDE_PROC_DEVSET(wcache,         0,     1),
124         { NULL },
125 };