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
smart_enable(ide_drive_t * drive)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
get_smart_data(ide_drive_t * drive,u8 * buf,u8 sub_cmd)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
idedisk_cache_proc_show(struct seq_file * m,void * v)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
idedisk_capacity_proc_show(struct seq_file * m,void * v)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
__idedisk_proc_show(struct seq_file * m,ide_drive_t * drive,u8 sub_cmd)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
idedisk_sv_proc_show(struct seq_file * m,void * v)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
idedisk_st_proc_show(struct seq_file * m,void * v)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 };
126