summaryrefslogtreecommitdiffstats
path: root/drivers/ide/ide-disk_proc.c
blob: eaea3bef2073253977282245eb78d440534fa9bf (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
#include <linux/kernel.h>
#include <linux/ide.h>

#include "ide-disk.h"

static int smart_enable(ide_drive_t *drive)
{
	struct ide_cmd cmd;
	struct ide_taskfile *tf = &cmd.tf;

	memset(&cmd, 0, sizeof(cmd));
	tf->feature = ATA_SMART_ENABLE;
	tf->lbam    = ATA_SMART_LBAM_PASS;
	tf->lbah    = ATA_SMART_LBAH_PASS;
	tf->command = ATA_CMD_SMART;
	cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;

	return ide_no_data_taskfile(drive, &cmd);
}

static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd)
{
	struct ide_cmd cmd;
	struct ide_taskfile *tf = &cmd.tf;

	memset(&cmd, 0, sizeof(cmd));
	tf->feature = sub_cmd;
	tf->nsect   = 0x01;
	tf->lbam    = ATA_SMART_LBAM_PASS;
	tf->lbah    = ATA_SMART_LBAH_PASS;
	tf->command = ATA_CMD_SMART;
	cmd.tf_flags = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
	cmd.protocol = ATA_PROT_PIO;

	return ide_raw_taskfile(drive, &cmd, buf, 1);
}

static int proc_idedisk_read_cache
	(char *page, char **start, off_t off, int count, int *eof, void *data)
{
	ide_drive_t	*drive = (ide_drive_t *) data;
	char		*out = page;
	int		len;

	if (drive->dev_flags & IDE_DFLAG_ID_READ)
		len = sprintf(out, "%i\n", drive->id[ATA_ID_BUF_SIZE] / 2);
	else
		len = sprintf(out, "(none)\n");

	PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
}

static int proc_idedisk_read_capacity
	(char *page, char **start, off_t off, int count, int *eof, void *data)
{
	ide_drive_t*drive = (ide_drive_t *)data;
	int len;

	len = sprintf(page, "%llu\n", (long long)ide_gd_capacity(drive));

	PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
}

static int proc_idedisk_read_smart(char *page, char **start, off_t off,
				   int count, int *eof, void *data, u8 sub_cmd)
{
	ide_drive_t	*drive = (ide_drive_t *)data;
	int		len = 0, i = 0;

	(void)smart_enable(drive);

	if (get_smart_data(drive, page, sub_cmd) == 0) {
		unsigned short *val = (unsigned short *) page;
		char *out = (char *)val + SECTOR_SIZE;

		page = out;
		do {
			out += sprintf(out, "%04x%c", le16_to_cpu(*val),
				       (++i & 7) ? ' ' : '\n');
			val += 1;
		} while (i < SECTOR_SIZE / 2);
		len = out - page;
	}

	PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
}

static int proc_idedisk_read_sv
	(char *page, char **start, off_t off, int count, int *eof, void *data)
{
	return proc_idedisk_read_smart(page, start, off, count, eof, data,
				       ATA_SMART_READ_VALUES);
}

static int proc_idedisk_read_st
	(char *page, char **start, off_t off, int count, int *eof, void *data)
{
	return proc_idedisk_read_smart(page, start, off, count, eof, data,
				       ATA_SMART_READ_THRESHOLDS);
}

ide_proc_entry_t ide_disk_proc[] = {
	{ "cache",	  S_IFREG|S_IRUGO, proc_idedisk_read_cache,    NULL },
	{ "capacity",	  S_IFREG|S_IRUGO, proc_idedisk_read_capacity, NULL },
	{ "geometry",	  S_IFREG|S_IRUGO, proc_ide_read_geometry,     NULL },
	{ "smart_values", S_IFREG|S_IRUSR, proc_idedisk_read_sv,       NULL },
	{ "smart_thresholds", S_IFREG|S_IRUSR, proc_idedisk_read_st,   NULL },
	{ NULL, 0, NULL, NULL }
};

ide_devset_rw_field(bios_cyl, bios_cyl);
ide_devset_rw_field(bios_head, bios_head);
ide_devset_rw_field(bios_sect, bios_sect);
ide_devset_rw_field(failures, failures);
ide_devset_rw_field(lun, lun);
ide_devset_rw_field(max_failures, max_failures);

const struct ide_proc_devset ide_disk_settings[] = {
	IDE_PROC_DEVSET(acoustic,	0,   254),
	IDE_PROC_DEVSET(address,	0,     2),
	IDE_PROC_DEVSET(bios_cyl,	0, 65535),
	IDE_PROC_DEVSET(bios_head,	0,   255),
	IDE_PROC_DEVSET(bios_sect,	0,    63),
	IDE_PROC_DEVSET(failures,	0, 65535),
	IDE_PROC_DEVSET(lun,		0,     7),
	IDE_PROC_DEVSET(max_failures,	0, 65535),
	IDE_PROC_DEVSET(multcount,	0,    16),
	IDE_PROC_DEVSET(nowerr,		0,     1),
	IDE_PROC_DEVSET(wcache,		0,     1),
	{ NULL },
};
OpenPOWER on IntegriCloud