Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#include <linux/kernel.h>
2#include <linux/ide.h>
3
4#include "ide-disk.h"
5
6static int smart_enable(ide_drive_t *drive)
7{
8 struct ide_cmd cmd;
9 struct ide_taskfile *tf = &cmd.tf;
10
11 memset(&cmd, 0, sizeof(cmd));
12 tf->feature = ATA_SMART_ENABLE;
13 tf->lbam = ATA_SMART_LBAM_PASS;
14 tf->lbah = ATA_SMART_LBAH_PASS;
15 tf->command = ATA_CMD_SMART;
16 cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
17 cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
18
19 return ide_no_data_taskfile(drive, &cmd);
20}
21
22static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd)
23{
24 struct ide_cmd cmd;
25 struct ide_taskfile *tf = &cmd.tf;
26
27 memset(&cmd, 0, sizeof(cmd));
28 tf->feature = sub_cmd;
29 tf->nsect = 0x01;
30 tf->lbam = ATA_SMART_LBAM_PASS;
31 tf->lbah = ATA_SMART_LBAH_PASS;
32 tf->command = ATA_CMD_SMART;
33 cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
34 cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
35 cmd.protocol = ATA_PROT_PIO;
36
37 return ide_raw_taskfile(drive, &cmd, buf, 1);
38}
39
40static int proc_idedisk_read_cache
41 (char *page, char **start, off_t off, int count, int *eof, void *data)
42{
43 ide_drive_t *drive = (ide_drive_t *) data;
44 char *out = page;
45 int len;
46
47 if (drive->dev_flags & IDE_DFLAG_ID_READ)
48 len = sprintf(out, "%i\n", drive->id[ATA_ID_BUF_SIZE] / 2);
49 else
50 len = sprintf(out, "(none)\n");
51
52 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
53}
54
55static int proc_idedisk_read_capacity
56 (char *page, char **start, off_t off, int count, int *eof, void *data)
57{
58 ide_drive_t*drive = (ide_drive_t *)data;
59 int len;
60
61 len = sprintf(page, "%llu\n", (long long)ide_gd_capacity(drive));
62
63 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
64}
65
66static int proc_idedisk_read_smart(char *page, char **start, off_t off,
67 int count, int *eof, void *data, u8 sub_cmd)
68{
69 ide_drive_t *drive = (ide_drive_t *)data;
70 int len = 0, i = 0;
71
72 (void)smart_enable(drive);
73
74 if (get_smart_data(drive, page, sub_cmd) == 0) {
75 unsigned short *val = (unsigned short *) page;
76 char *out = (char *)val + SECTOR_SIZE;
77
78 page = out;
79 do {
80 out += sprintf(out, "%04x%c", le16_to_cpu(*val),
81 (++i & 7) ? ' ' : '\n');
82 val += 1;
83 } while (i < SECTOR_SIZE / 2);
84 len = out - page;
85 }
86
87 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
88}
89
90static int proc_idedisk_read_sv
91 (char *page, char **start, off_t off, int count, int *eof, void *data)
92{
93 return proc_idedisk_read_smart(page, start, off, count, eof, data,
94 ATA_SMART_READ_VALUES);
95}
96
97static int proc_idedisk_read_st
98 (char *page, char **start, off_t off, int count, int *eof, void *data)
99{
100 return proc_idedisk_read_smart(page, start, off, count, eof, data,
101 ATA_SMART_READ_THRESHOLDS);
102}
103
104ide_proc_entry_t ide_disk_proc[] = {
105 { "cache", S_IFREG|S_IRUGO, proc_idedisk_read_cache, NULL },
106 { "capacity", S_IFREG|S_IRUGO, proc_idedisk_read_capacity, NULL },
107 { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL },
108 { "smart_values", S_IFREG|S_IRUSR, proc_idedisk_read_sv, NULL },
109 { "smart_thresholds", S_IFREG|S_IRUSR, proc_idedisk_read_st, NULL },
110 { NULL, 0, NULL, NULL }
111};
112
113ide_devset_rw_field(bios_cyl, bios_cyl);
114ide_devset_rw_field(bios_head, bios_head);
115ide_devset_rw_field(bios_sect, bios_sect);
116ide_devset_rw_field(failures, failures);
117ide_devset_rw_field(lun, lun);
118ide_devset_rw_field(max_failures, max_failures);
119
120const struct ide_proc_devset ide_disk_settings[] = {
121 IDE_PROC_DEVSET(acoustic, 0, 254),
122 IDE_PROC_DEVSET(address, 0, 2),
123 IDE_PROC_DEVSET(bios_cyl, 0, 65535),
124 IDE_PROC_DEVSET(bios_head, 0, 255),
125 IDE_PROC_DEVSET(bios_sect, 0, 63),
126 IDE_PROC_DEVSET(failures, 0, 65535),
127 IDE_PROC_DEVSET(lun, 0, 7),
128 IDE_PROC_DEVSET(max_failures, 0, 65535),
129 IDE_PROC_DEVSET(multcount, 0, 16),
130 IDE_PROC_DEVSET(nowerr, 0, 1),
131 IDE_PROC_DEVSET(wcache, 0, 1),
132 { NULL },
133};